СИСТЕМА ОБМЕННЫХ РЕАКЦИЙ, СИСТЕМА ПРОИЗВОДСТВА МОДИФИЦИРОВАННОГО ПОЛИЭФИРА, СОДЕРЖАЩАЯ ТОТ ЖЕ СПОСОБ ПРОИЗВОДСТВА МОДИФИЦИРОВАННОГО ПОЛИЭФИРА, И ПРОДУКТ В ВИДЕ МОДИФИЦИРОВАННОГО ПОЛИЭФИРНОГО ВОЛОКНА

Изобретение относится к системе обменных реакций, системе производства модифицированного полиэфира, способу производства модифицированного полиэфира и модифицированному полиэфирному волокну, полученному этим способом. Система обменных реакций содержит вертикальный реактор (2) с полностью перемешанным потоком, расположенный на верхней стенке вертикального реактора (7) с поршневым потоком. Система производства модифицированного полиэфира содержит систему этерификации, систему предварительной поликонденсации, систему окончательной поликонденсации и систему добавления модификатора, которая расположена между системами этерификации и предварительной поликонденсации. Способ производства модифицированного полиэфира содержит этапы подготовки суспензии и модификатора, добавления суспензии в систему производства модифицированного полиэфира и добавления модификатора в систему производства модифицированного полиэфира. Модифицированное полиэфирное волокно, полученное этим способом, имеет удельную разрывную ...

СЛОЖНЫЕ ПОЛИЭФИРЫ ТЕРЕФТАЛЕВОЙ КИСЛОТЫ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

... 1. Сложный полиэфир на основе продукта поликонденсации терефталевой кислоты и/или производных терефталевой кислоты с двухатомными спиртами, отличающийся тем, что двухатомные спирты подбираются так, что (I) от 70 до менее чем 89 мол.% этиленгликоля, 1,3-пропандиола и/или 1,4-бутандиола сочетаются с (II) от 30 до 11 мол.% 1,2-алкандиола, не считая этиленгликоля, и сложный полиэфир имеет температуру плавления от около 155 до 250°С (по стандарту DIN EN ISO 53765) и характеристическую вязкость (по стандарту DIN 53728) от около 0,5 до 0,7 дл/г. ! 2. Сложный полиэфир по п.1, отличающийся тем, что двухатомные спирты подбираются так, что (I) от 89 до 80 мол.% этиленгликоля, 1,3-пропандиола и/или 1,4-бутандиола сочетаются с (II) от 20 до 11 мол.% 1,2-алкандиола. ! 3. Сложный полиэфир по п.1 или 2, отличающийся тем, что температура плавления сложного полиэфира составляет от около 190 до 250°С. ! 4. Сложный полиэфир по п.1 или 2, отличающийся тем, что сложный полиэфир имеет характеристическую вязкость ...

Pulpeartige kurze Fasern

POLYESTERFASER

Hydrophiles silikonmodifiziertes Polyesterharz und daraus hergestellte Fasern und Folien

Hochfestes schwer entflammbares Polyestergarn, Verfahren zu seiner Herstellung und seine Verwendung

VERFAHREN ZUR HERSTELLUNG SCHWER ENTFLAMMBARER LINEARER POLYESTER

Hochbelastbare Polyester-Monofilamente für technische Anwendungen

Beschrieben werden Copolyester-Monofilamente mit hoher mechanischer und chemischer Stabilität aus Copolyestern aus Dicarbonsäure-Baugruppen und Diol-Baugruppen, wobei die Dicarbonsäure-Baugruppen überwiegend 2,6-Naphthalin-dicarbonsäure-Baugruppen und 4,4'-Biphenyl-dicarbonsäure-Baugruppen und die Diol-Baugruppe überwiegend Ethylenglycol-Baugruppen sind und die sich durch eine Kombination guter mechanischer und chemischer Eigenschaften auszeichnen, sowie ein Verfahren zur Herstellung dieser Polyester-Monofilamente. DOLLAR A Ferner werden beschrieben Papiermaschinensiebe, Siebdruckgewebe und Filtermaterialien, die überwiegend aus diesen Polyester-Monofilamenten bestehen.

Pillarm und schwer entflammbar modifizierte Polyester, Verfahren zu ihrer Herstellung und daraus geformte Gebilde

WASSERDISPERGIERBARE UND MEHRKOMPONENTIGE FASERN AUS SULFOPOLYESTERN

Polyester shaped articles

Filaments and staple fibres having an intrinsic viscosity in filament or fibres form of 0,35 to 0,49, measured on an 8% (weight/volume) solution in orthochlorophenol at 25 DEG C. are made from synthetic co-polyesters derived from terephthalic acid and containing 3-12 mole per cent of a second dicarboxylic acid of formula HOOC-R-COOH where R is polymethylene or arylene other than paraphenylene. The staple fibres are crimped, have a residual shrinkage in boiling water for 1 minute of less than 1%, are substantially free from coalesced and partly drawn lengths, are dyeable at the boil to heavy shades with disperse dyes, being capable of taking up at least 14 mg./g. of "Dispersol" Fast Scarlet B, (as defined) and the fibres form not more than 5 pills per sq. inch of fabric (as defined). The co-polyesters may be obtained by heating n mole per cent of the second acid, e.g. sebacic or adipic acids, with a composition comprising di-(b -hydroxyethyl) terephthalate and polymers thereof having an ...

POLYESTER FILAMENTS HAVING IMPROVED WATER-ABSORBING PROPERTIES

... 1285584 Cellular polyester filaments TORAY INDUSTRIES Inc 30 Oct 1969 [30 Oct 1968 12 Feb 1969 (2)] 53334/69 Heading B5B [Also in Division C3] Polyester filaments contain 0À4-5% by weight of a polyalkylene ether and 0À3-3% by weight of a surface-active metal salt, and have fine pores aligned along the filament axis. The polyester is a fibre-forming polyester, preferably one in which at least 60% by weight of the recurring units are ethylene terephthalate units, and may thus be polyethylene terephthalate homopolymer, a copolyester obtained by copolymerizing ethylene terephthalate with a known dihydroxy component, dicarboxylic acid component or hydroxy carboxylic acid component; a polyester blend obtained by melt mixing an ethylene terephthalate homopolymer or copolymer with another homopolyester or copolyester; an ethylene terephthalate copolymer containing amide, urethane, ether, carbonate or other linkages; a fibre-forming polyester other than polyethylene terephthalate; and a fibreforming ...

Process for obtaining modified polyethylene terephthalate useful for making pi lling-free fibres

The present invention relates to a process for obtaining continuously polyethylene terephthalate modified by -SiO- groups in a proportion of 300-700 ppm of Si during the direct esterification reaction between terephthalic acid and ethylene glycol, followed by polycondensation in a known manner by introducing methoxyethyl silicate or propyl silicate at a time when the prepolymer has a weight-average molecular mass of between 9,000 and 16,000, a polydispersity index of between 1.5 and 2, and when it is at a temperature of between 260 degrees and 290 degrees C. and at a pressure of between 1.5 and 2.5 bars, the silicate/prepolymer reaction time being at least 5 minutes. The present invention also relates to pilling-free fibres originating from the modified polyethylene terephthalate and to a process for obtaining them.

High compliance monofilament surgical surfaces comprising poly(alkylene terephithalate-co-(2-alkenyl or alkyl) succinate)

Process for the production of modified polyester moulding materials

FIBER FOR ARTIFICIAL HAIR, AND HEAD DECORATION ARTICLE INCLUDING SAME

FIBER FOR ARTIFICIAL HAIR, AND HEAD DECORATION ARTICLE INCLUDING SAME

FIBER FOR ARTIFICIAL HAIR, AND HEAD DECORATION ARTICLE INCLUDING SAME

PROCEDURE FOR THE PRODUCTION OF COPOLYESTERN FROM POLYETHYLENE TEREPHTHALATE

VERFAHREN ZUR HERSTELLUNG VON SCHWER ENTFLAMMBAREN LINEAREN POLYESTERN

PILLINGARME POLYESTERFASERN UND VERFAHREN ZUR HERSTELLUNG DERSELBEN

VERFAHREN ZUR HERSTELLUNG EINES MODIFIZIERTEN POLYETHYLENTEREPHTHALATES SOWIE VON EINEM PILLINGEFFEKT FREIE STAPELFASERN AUS DEM DERART MODIFIZIERTEN POLYMEREN

SCHWER ENTFLAMMBARE FADEN UND FASERN AUS POLYESTER

BIOLOGICALLY DEGRADABLE ONE NON-WOVEN CLOTH MATERIAL FROM COPOLYESTER

POLYESTER COMPOSITIONS SUITABLY TO THE PRODUCTION OF FIBERS AND FOILS WITH HIGH MODULUS OF ELASTICITY

POLYESTER FIBER

VERFAHREN ZUR HERSTELLUNG EINES MODIFIZIERTEN POLYETHYLENTEREPHTHALATES SOWIE VON EINEM PILLINGEFFEKT FREIE STAPELFASERN AUS DEM DERART MODIFIZIERTEN POLYMEREN

LOAD-DISTRIBUTING YARNS AND BELTS

MULTI-FILAMENT YARNS AND MANUFACTURING PROCESSES

Fibers formed from a blend of a modified aliphatic-aromatic copolyester and thermoplastic starch

A fiber formed from a thermoplastic composition that contains a thermoplastic starch and an aliphatic-aromatic copolyester is provided. The copolyester enhances the strength of the starch-containing fibers and also facilitates the ability of the starch to be melt processed. Due to its relatively low melting point, the aliphatic-aromatic copolyester may also be extruded with the thermoplastic starch at a temperature that is low enough to avoid substantial removal of the moisture found in the starch. Furthermore, the aliphatic-aromatic copolyester is also modified with an alcohol so that it contains one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the conditions of the alcoholysis reaction (e.g., alcohol and copolymer concentrations, temperature, etc.), the resulting modified aliphatic-aromatic copolyester may have a molecular weight that is relatively low. Such low molecular weight polymers have the combination of a higher melt flow index and lower apparent viscosity ...

Stent for vessels

Modified polytrimethylene terephthalate

NOVEL POLYESTERS AND THEIR USE IN COMPOSTABLE PRODUCTS SUCH AS DISPOSABLE DIAPERS

SYNTHETIC LINEAR POLYESTER FIBER HAVING IMPROVED ANTISTATIC PORPERTIES AND PROCESS FOR THE PREPARATION THEREOF

PROCESS OF MAKING BIOABSORBABLE FILAMENTS

Methods for making a bioabsorbable copolymer filaments (16) are provided herein. The methods include drying the polymer pellets to be extruded, melt extrusion of copolymer components, stretching the filaments in one or more draw steps and permitting the drawn elements (16) to relax. The copolymer preferably contains units derived from glycolide or glycolic acid and units derived from an alkylene carbonate, such as, for example, trimethylene carbonate.

METHOD FOR MAKING FAST ABSORBING SUTURES BY HYDROLYSIS

A method for making a surgical article is provided which comprises exposing a bioabsorbable material, e.g., a copolymer derived from a major amount of glycolide and a minor amount of lactide, to a humid environment either prior to coating the material or prior to or following sterilization of the material for a time period and at a temperature sufficient to predegrade the resulting surgical article.

POLYESTER FIBER, METHOD FOR PRODUCING THE SAME, CLOTH, TEXTILE PRODUCT, AND POLYESTER FORMED ARTICLE

Disclosed are: polyester fibers having excellent antibacterial properties, deodorizing properties, stain-proof properties and durability; a process for producing the polyester fibers; a cloth; a fiber product; and a polyester molded article. Polyester fibers, a cloth or a polyester molded article each comprising a polyester produced by the copolymerization of an ester-forming sulfonic acid metal salt compound and/or an ester-forming sulfonic acid phosphonium salt compound is treated with an acid, or a processing solution having a pH value of less than 7.0 is applied to the polyester fibers, the cloth or the polyester molded article, thereby adjusting the pH value of the polyester fibers, the cloth or the polyester molded article to a value less than 7Ø ...

COPOLYESTER FIBER

IMPROVED COPOLYESTER FIBER An improved copolyester fiber capable of being dyed with cationic dyes and having an excellent brightness, heat resistance and a satisfactory mechanical strength comprises a copolyester resin comprising a polymerization product of at least one aromatic dicarboxylic acid compound, at least one alkylene diol compound and at least one quaternary phosphonium organic sulfonate of the formula (I): (I) wherein A - an aromatic or aliphatic radical, X1 = H or an ester-forming organic radical, X2 = an esterforming organic radical, R1, R2, R3 and R4 - an alkyl or aryl radical, n = 1 or more, and having an ¢n!f of 0.5 ox more, the copolyester fiber having a silk factor of 25 or more and exhibiting the number of scission of backbone chains of the copolyester molecules of 140 x 1023 or less per 106 g of fiber when wet heat-treated in a solution of 0.4 g/l of acetic acid in distilled water at 130.degree.C for 60 minutes.

OPTICALLY ANISOTROPIC MELT FORMING COPOLYESTERS

TITLE OPTICALLY ANISOTROPIC MELT FORMING COPOLYESTERS Copolyesters useful for fibers having high elongation and modulus contain minor amounts of < IMG > units where Y is oxygen or carbonyl.

PRODUCING YARN BY CO-SPINNING LOW AND HIGH SHRINKAGE POLYESTER FILAMENTS

INDUSTRIAL POLYESTER YARN

Inventors: James M. Barnewall Anthony S. Scheibelhoffer IMPROVED INDUSTRIAL POLYESTER YARN There is disclosed improved hydrolytically and thermally stable industrial polyester yarns prepared by melt spinning a polyester resin in the presence of a carbodiimide selected from the group consisting of monoand bis-carbodiimides wherein the amount of carbodiimide employed is equivalent to the concentration of COOH groups in the original resin plus the concentration of COOH groups generated when the original resin is extruded in the absence of carbodiimide.

EXTREMELY FINE POLYLACTIC ACID FIBER, FIBROUS STRUCTURE AND PROCESS FOR PRODUCING THESE

A fibrous structure obtained by spinning a solution of L-lactic acid condensation product and D-lactic acid condensation product in accordance with an electrostatic spinning technique. There can be provided a fibrous structure containing fibers that have an extremely small fiber diameter, exhibiting excellent heat resistance and biodegradability.

AROMATIC POLYESTER AND FILAMENTS

FIBER-FORMING POLYESTERS OF KETODIOLS

METHODS AND COMPOSITIONS FOR COOLING YARNS AND FABRICS COMPRISING A CELLULOSIC FIBER, AND ARTICLES COMPRISING SAME

In one aspect, the disclosure relates to composite fibers having a structure comprising a core component and sheath component, wherein each of the core component and the sheath component independently comprise a polymer and a disclosed cooling composition. In various further aspects, the present disclosure pertains to single-covered yarn comprising a core yarn comprising a disclosed composite fiber comprising a core component and a sheath component, and a first fiber comprising a cellulosic fiber, such that the first fiber is wrapped or surrounds the core fiber. In still further aspects, the present disclosure pertains to a fabric, e.g., a woven or knit fabric, comprising a disclosed single-covered yarn. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

FIBERS, FILTER RODS AND OTHER NONWOVEN ARTICLES MADE FROM POLY(1,2-PROPYLENE TEREPHTHALATE) COPOLYESTERS OF TEREPHTHALIC ACID, 1,2-PROPYLENE GLYCOL AND ETHYLENE GLYCOL

ABRASION-RESISTANT WIRES, FIBRES AND FILAMENTS

La présente invention concerne des fils, fibres ou filaments, ayant une résistance à l'abrasion améliorée, et notamment utilisables pour la réalisation de feutres pour machines à papier. Elle concerne plus particulièrement des fils, fibres ou filaments à base de polyamide ou de polyester.

SCAFFOLD

The present invention relates to scaffolds which can be used as medical d evices for guided tissue regeneration and repair, in particular the inventio n is directed to a scaffold comprising fibres having a mean fibre diameter o f between from about 1.2 to 4.0 microns, wherein the fibres comprise a glyco lide. The invention further relates to the use of the scaffolds for the sele ctive capture of cell populations for a cell source material.

WEBS OF BI-COMPONENT AND MONO-COMPONENT CO-PLA FIBERS

Web material for production of tea bags and the like made of a nonwoven network of PLA fibers in mono-component.

CROSSLINKED FIBERS AND METHOD OF MAKING SAME BY EXTRUSION

The present disclosure relates to a method of forming fibers. First and second precursors, each possessing a core and at least one functional group known to have click reactivity, are mixed. The mixed precursors are then extruded under heat to cross-link during fiber production.

TEXTILE SHEET MATERIAL FORMED WITH FLAME-RESISTANT POLYESTER MONOFILAMENTS

HOE 89/F 193 Textile sheet material formed with flame-resistant polyester monofilaments A textile sheet material is formed from flame-resistant synthetic fibers with a stiffening element which comprises monofilaments (20,30) comprising polyesters of dicarboxylic acids and diol components with an incorporated flame retardant. The flame retardant has been incorporated to the polyester chains as copolymerized units comprising structural elements of the general formula where R is alkylene, arylene or aralkylene and R1 is alkyl, aryl or aralkyl.

FLAME-RETARDANT FABRICS CONTAINING PHOSPHORUS-MODIFIED POLYESTER FIBERS, AIRBAGS MADE THEREFROM AND USE THEREOF

Flame-retardant fabrics containing phosphorus-modified polyester fibers, airbags made therefrom and use thereof Uncoated fabrics are described which have a gas permeability of less than or equal to 80 dm3 of air per minute per square decimeter at a pressure drop of 500 Pa (measured as specified in DIN 53 887) and which have at least two thread systems of parallel threads made of high-tenacity polyester filament yarns and having a yarn linear density of 150 to 700 dtex, and having an individual filament linear density of less than or equal to 7 dtex. In the fabrics, the polyester is a phosphorus-modified copolyester which contains a bifunctional phosphorus compound in an amount of 0.1 to 5% by weight, based on the amount of phosphorus, in the polymer chain. Flame-retardant and uncoated airbags may be manufactured from fabrics of this type.

BLOCK COPOLYMERS AND SURGICAL ARTICLES THEREFROM

A method for making bioabsorbable block copolymer includes extruding a mixture of first polymeric component particles with second polymeric component particles under conditions sufficient to cause transesterification. The resulting block copolymer filaments can be used to form surgical sutures.

Machine à coudre pour broderie.

Verfahren zur Herstellung eines Textilflächengebildes

Schmelzgesponnene synthetische Fasern mit verminderter dynamischer Reibung und Verfahren zu ihrer Herstellung

Verfahren zur Herstellung von Polyester- oder Copolyesterfasern

Procédé pour la production de fibres synthétiques avec une orientation moléculaire

Garn

Verfahren zur Herstellung von Formkörpern

Als Füllmaterial geeignete, unveredelte Polyesterstapelfasern und Verfahren zu deren Herstellung

Verfahren zur Herstellung von Polyestergarn und nach diesem Verfahren erhaltenes Garn sowie dessen Verwendung zur Herstellung von Geweben

Procédé pour donner une orientation moléculaire à des filaments formés de polyester

Verfahren zur Herstellung synthetischer Fasern

Verfahren zur Herstellung von Polyesterfasern mit modifizierten Eigenschaften

Verfahren zur Herstellung von elastomeren Copolyestern sowie deren Verwendung zur Herstellung von elastomeren Filamenten

Prepn of poly ethylene-1 2-dipheno 4 4-dicarboxylate

Poly(ethylene-1:2-diphenoxyethane-4:4'-di-carboxylate), or a high m. wt. co-polyester of it, is melt spun and the yarn is drawn. The resultant yarn has an initial modulus greater than 160 g/denier/100% extension and has a shrinkage, when immersed in boiling water, of less than 2%. It is therefore important in mfg. tyre cords, webbings, fabrics and belting reinforcing.

Verfahren zur Herstellung von Fasern oder Folien mit verbesserter Anfärbbarkeit aus Copolyester

Verfahren zur Herstellung geformter Gebilde, die saure Gruppen im Polymermolekül aufweisende Mischpolyester der Terephthalsäure enthalten

Nouvelles fibres de polyester et procédé pour les obtenir

PROCEDE POUR CONFERER UNE BONNE RESISTANCE A LA FLAMME A DES FIBRESTEXTILES EN POLYESTER.

PROCEDE DE NOUVEAUXPREPARATION DE COPOLYESTERSARYLATESSEQUENCES.

DRAWN ONE AND ORIENTATION THERMOPLASTIC THREAD.

The method for deriving modified polyethylene terephthalate fibers without pilling from the polymer thus modified.

PROCEDURE FOR THE PRODUCTION OF A STRECKTEXTURIERTEN YARN.

PROCEDURE FOR THE PRODUCTION OF A STRECKTEXTURIERTEN YARN.

PROCÉDÉ DE FABRICATION D'UN TISSU NON-TISSÉ ENTIÈREMENT DÉGRADABLE PAR FILAGE-LIAGE.

L'invention concerne un procédé de fabrication d'un tissu non-tissé entièrement dégradable par filage-liage, comprenant : (S1) la préparation d'un poly(caprolactone-coacide lactique) (P(CL-co-LA)) ; (S2) la préparation d'un acide polylactique (PLA) modifié copolymérisé ; et (S3) la fabrication d'un tissu non-tissé entièrement dégradable à l'aide d'un procédé de filage-liage. Selon l'invention, le PLA est modifié en gradient plusieurs fois pour fabriquer le tissu non-tissé entièrement dégradable en combinaison avec un procédé de filage-liage optimisé.

Liquid crystalline polyester fiber and process for production of the same

A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15 DEG C or above as observed in differential calorimetry under heating from 50 DEG C at a temperature elevation rate of 20 DEG C/min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.

Polylactic acid composition and fiber composed of the same

Water-absorbing fabric

Process for the production of polyethylene terephthalate copolyester, copolyester obtained thereby and use and catalyst useful in the process

Cationic dyeable polyester and preparation method thereof

Molten synthetic polymer spinning

Process of filament thread drawing composed of polyesters

Polycarbonates of 2,2a (4-hydroxyphenyl)-propane to improved crystallizability

Improvements brought to the polyester articles, in particular to fibres produced starting from polymers of ethylene glycol terephthalate

PREPARATION OF POLYETHYLENE-1,2,-DIPHENOXYETHANE-4,4'-DICARBOXYLATE FIBRES

FILAMENT OR FIBER ACID GAS ABSORBING AND/OR BASIC, METHOD FOR MANUFACTURING SUCH A FILAMENT OR OF SUCH A FIBER, TEXTILE ARTICLE COMPRISING SUCH A SUCH A FIBER FILAMENT OR

La présente invention a pour objet un filament ou fibre absorbant les molécules odorantes, notamment le(s) gaz acide(s) et/ou basique(s), ayant une surface extérieure déterminée dont au moins une portion de ladite surface comprend des groupes carboxyliques -COOH et/ou des groupes carboxylates -COO- complexés avec des sels métalliques. Avantageusement, ladite portion est constituée d'une matrice issue de la réaction d'un mélange comprenant un polyester ainsi qu'un premier copolymère d'au moins une oléfine et de (méth)acrylate d'alkyle et/ou d'acide (méth)acrylique (A), et un second (co)polymère comprenant des groupes oxiranes -C2H3O (B), au moins une partie des fonctions (méth)acrylates du copolymère (A) ayant été transformée en fonctions carboxylates correspondantes et/ou carboxyliques correspondantes.

FIBRES DELAYING the PROPAGATION Of a FLAME AND THEIR OBTAINING

PROCESS FOR THE MANUFACTURE OF MELT-SPUN LINEAR POLYESTER MATERIAL

POLYESTER FILAMENTS HAVING IMPROVED WATER-ABSORBING PROPERTIES

Fiber and fiber structure

Provided is a fiber containing a composition obtained by mixing a compound having at least a ring structure containing one carbodiimide group, the first nitrogen and second nitrogen thereof being linked together through a linking group, with a polymer compound having an acidic group. Also provided is a fiber structure made thereof. A fiber and a fiber structure, which have improved hydrolysis resistance and from which no free isocyanate compounds are produced, can be provided.

Cationic-dyeable polyester fiber and conjugated fiber

A fiber made of a polyester copolymer (B), wherein the polyester copolymer (B) comprises a dicarboxylic acid component and a glycol component, and the dicarboxylic acid component comprises 75 mol % or more of a terephthalic acid component, 1.0 mol % to 3.5 mol % of component (a) derived from a compound represented by formula (I), 2.0 mol % to 10.0 mol % of a cyclohexane dicarboxylic acid component (b), and 2.0 mol % to 8.0 mol % of an aliphatic dicarboxylic acid component (c). This can afford a polyester fiber that exhibits deep color property to cation dyes and disperse dyes under a normal pressure environment and is superior in color fastness to washing and color fastness to light and can secure good spinnability.

PHOTOPOLYMERIZABLE COMPOSITIONS FOR SOLVENTLESS FIBER SPINNING

Disclosed are methods of fiber spinning and polymer fibers that utilize multifunctional thiol and enes compounds. Also, the subject matter disclosed herein relates to uses of polymer fibers and articles prepared from such fibers. 1. A method for forming a polymer fiber , comprising:a. providing a photopolymerizable composition comprising one or more ene compounds;b. forming a fiber from the photopolymerizable composition; andc. irradiating the photopolymerizable composition with radiation during or after fiber formation to polymerize the photopolymerizable composition.2. The method of claim 1 , wherein the photopolymerizable composition further comprises one or more thiol compounds.3. The method of any of the previous claims claim 1 , wherein the photopolymerizable composition comprises 0 to negligible amounts of thiol compounds.4. The method of any of the previous claims claim 1 , wherein the ene compound is a monofunctional ene compound.5. The method of any of the previous claims claim 1 , wherein the ene compound is a multifunctional ene compound.6. The method of any of the previous claims claim 1 , wherein the thiol compound is a monofunctional thiol compound.7. The method of any of the previous claims claim 1 , wherein the thiol compound is a multifunctional thiol compound.8. The method of any of the previous claims claim 1 , wherein the photopolymerizable composition comprises one or more monofunctional ene compounds or one or more monofunctional thiol compounds in combination with one or more multifunctional ene compounds or one or more multifunctional thiol compounds.9. The method of any of the previous claims claim 1 , wherein the ratio of the thiol compound and the ene compound is from 1:10 to 10:1.10. The method of any of the previous claims claim 1 , wherein the ratio of the thiol compound and the ene compound is about 1:4.11. The method of any of the previous claims claim 1 , wherein the thiol compound is a tetra- claim 1 , penta- claim 1 , hexa- claim ...

Biodegradable Aliphatic-Aromatic Copolyester for Use in Nonwoven Webs

A method for forming a biodegradable aliphatic-aromatic copolyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic-aromatic copolyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.

Biodegradable polyester fiber having excellent thermal stability and strength, and method for producing same

The present invention aims to provide biodegradable polyester fibers excellent in thermal stability and fiber strength. Another aim is to provide a method for producing biodegradable polyester fibers excellent in mechanical properties, particularly in thermal stability. The present invention relates to biodegradable polyester fibers comprising a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) that has a 3HH molar fraction of 2 to 9 mol %. The present invention also relates to a method for producing the biodegradable polyester fibers, comprising a fiber forming step of melt-extruding a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) to form fibers at a temperature higher than or equal to the glass transition temperature of the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) but not higher than 70° C.

Liquid-crystalline polyester multifilament

A liquid crystalline polyester multifilament has a fusion degree between single fibers of 0 to 20. A method of producing a liquid crystalline polyester multifilament includes at least one step of a melt spinning step and a rewinding step, wherein an anti-fusion agent is deposited on a fiber surface of a melt-spun liquid crystalline polyester multifilament from application directions different from each other by 90 to 180° in a plane perpendicular to the yarn running direction.

Fibers Formed from a Blend of a Modified Aliphatic-Aromatic Copolyester and Theremoplastic Starch

A fiber formed from a thermoplastic composition that contains a thermoplastic starch and an aliphatic-aromatic copolyester is provided. The copolyester enhances the strength of the starch-containing fibers and facilitates the ability of the starch to be melt processed. Due to its relatively low melting point, the copolyester may also be extruded with the thermoplastic starch at a temperature low enough to avoid substantial removal of the moisture in the starch. Furthermore, the copolyester is also modified with an alcohol to contain one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the conditions of the alcoholysis reaction (e.g., alcohol and copolymer concentrations, temperature, etc.), the resulting modified aliphatic-aromatic copolyester may have a relatively low molecular weight. Such low molecular weight polymers have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a variety of fiber forming applications, such as meltblowing nonwoven webs. 1. A fiber formed from a thermoplastic composition that comprises from about 5 wt. % to about 40 wt. % of at least one thermoplastic starch and from about 60 wt. % to about 95 wt. % of an aliphatic-aromatic copolyester terminated with an alkyl group , hydroxyalkyl group , or a combination thereof , wherein the copolyester has a melt flow index of from about 5 to about 200 grams per 10 minutes , determined at a load of 2160 grams and temperature of 190° C. in accordance with ASTM Test Method D1238-E.2. The fiber of claim 1 , wherein the melt flow index of the copolyester is from about 10 to about 100 grams per 10 minutes.3. The fiber of claim 1 , wherein the copolyester has an apparent viscosity of from about 25 to about 500 Pa·scal-seconds claim 1 , determined at a temperature of 150° C. and a shear rate of 1000 sec.4. The fiber of claim 1 , wherein the copolyester has an apparent viscosity of from about 50 to about 400 Pa·scal-seconds claim 1 , ...

BIO-BASED DEGRADABLE KNITTED FABRIC WITH ANTIBACTERIAL EFFECT

A biodegradable antibacterial knitted fabric, a cross section of the knitted fabric includes a front side of cross section made of wool short fiber yarns, an intermediate connection layer of cross section capable of transferring moisture and a rear side of cross section made of antibacterial filaments; the intermediate connection layer of cross section is made of filament yarns having a special shape capable of being inserted into the front side of cross section and the rear side of cross section so that the front side of cross section is connected with the rear side of cross section. The biodegradable antibacterial knitted fabric proposed by the present application has a long time significant antibacterial effect by adopting a cross section structure with three layers and antibacterial material, and does not contain any antimicrobials and metal ions, and has the advantages of low cost, easy manufacturing and long lasting antibacterial effect. 1100101102103102101103101103. A biodegradable antibacterial knitted fabric , wherein , a cross section () includes a front side of cross section () made of wool short fiber yarns , an intermediate connection layer of cross section () capable of transferring moisture and a rear side of cross section () made of antibacterial filaments; the intermediate connection layer of cross section () is made of filament yarns having a special shape capable of being inserted into the front side of cross section () and the rear side of cross section () so that the front side of cross section () is connected with the rear side of cross section () forming a double-sided fabric with different yarn and effect on each side.2200. The biodegradable antibacterial knitted fabric according to claim 1 , wherein claim 1 , the biodegradable antibacterial knitted fabric adopts a compound knitting structure with six rows ().3201204200101202205103203206102. The biodegradable antibacterial knitted fabric according to claim 2 , wherein claim 2 , a first row () ...

Polyurethane elastic fiber with flame retardant function and preparation method thereof

Disclosed are a polyurethane elastic fiber with a flame retardant function and a preparation method thereof. The polyurethane elastic fiber is prepared by using a polyether diol containing phosphorus elements or a polyester diol containing phosphorus elements as a raw material to react with 4,4′-diphenylmethane diisocyanate to prepare a prepolymer, extending the chain using an organic amine to obtain a polyurethane solution, and dry spinning with the polymer solution to prepare the polyurethane fiber. The limit oxygen index of the prepared polyurethane fiber was between 25% and 32%.

LIQUID CRYSTALLINE POLYESTER FIBER AND PROCESS FOR PRODUCTION OF THE SAME

A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance. 2. The liquid crystalline polyester fiber according to claim 1 , wherein an elastic modulus is 600 cN/dtex or more.3. The liquid crystalline polyester fiber according to claim 1 , wherein a half width of the endothermic peak (Tm1) is lower than 15° C.4. The liquid crystalline polyester fiber according to claim 1 , wherein said structural unit (I) is present at 40 to 85 mol % relative to the sum of said structural units (I) claim 1 , (II) and (III) claim 1 , said structural unit (II) is present at 60 to 90 mol % relative to the sum of said structural units (II) and (III) claim 1 , and said structural unit (IV) is present at 40 to 95 mol % relative to the sum of said structural units (IV) and (V).5. The liquid crystalline polyester fiber according to claim 1 , wherein said heat of melting (ΔHm1) at said endothermic peak (Tm1) is 3.0 times or more relative to a heat of melting (ΔHm2) at an endothermic peak (Tm2) observed when measured under a condition of heating again at a temperature elevation rate of 20° C./min after once cooled down to 50° C. under a condition of a temperature lowering rate of 20° C./min after maintained for five minutes at a temperature of Tm1+20° C. after observation of Tm1.6. A process for ...

METHOD FOR PREPARING A PATTERNED SUBSTRATE AND USE THEREOF IN IMPLANTS FOR TISSUE ENGINEERING

A method for preparing a patterned substrate is provided. The method includes melt-spinning at least one biocompatible polymer to form fibers; collecting the fibers on a substrate such that the fibers are aligned on the substrate; and applying a binding agent to the aligned fibers to bond the fibers into the aligned arrangement to obtain the patterned substrate in form of an aligned fiber mat. Use of the patterned substrate in an implant for tissue engineering is also provided. 1. A method for preparing a patterned substrate , the method comprising:a) melt-spinning at least one biocompatible polymer to form fibers;b) collecting the fibers on a substrate such that the fibers are aligned on the substrate; andc) applying a binding agent to the aligned fibers to bond the fibers into the aligned arrangement to obtain the patterned substrate in form of an aligned fiber mat.2. The method according to claim 1 , wherein collecting the fibers on a substrate comprises rotating the substrate such that the fibers are collected circumferentially around the substrate.3. The method according to claim 1 , wherein the substrate is a hollow tube comprising or consisting of a biocompatible polymer.4. The method according to claim 3 , wherein the hollow tube is prepared bya) providing a cylindrical element having a first layer comprising or consisting of a water-soluble polymer coated on a lateral surface of the cylindrical element;b) coating a second layer comprising or consisting of a biocompatible polymer on the first layer;c) immersing the cylindrical element having the first and the second layer coated thereon in an aqueous solution to remove the first layer, andd) separating the second layer from the cylindrical element to obtain the hollow tube.5. The method according to claim 4 , wherein providing a cylindrical element having a first layer comprising or consisting of a water-soluble polymer coated on a lateral surface of the cylindrical element comprises dip-coating the ...

Processes for Producing an Antimicrobial Masterbatch and Products Thereof

A masterbatch may be blended with virgin polymer to add desired color or other properties to the virgin polymer prior to further processing. Methods and processes for producing an antimicrobial and/or antiviral polymeric masterbatch that may be used to add antimicrobial, antiviral and/or antifungal properties to a virgin polymer without significantly degrading the properties of the virgin polymer. The masterbatch may be extruded into pellets or formed into other particles for subsequent blending with the virgin polymer to add antimicrobial and antiviral properties to the polymeric materials. 1. A method of producing an antimicrobial masterbatch , comprising:compounding antimicrobial particles with a base polymer wherein the ratio of antimicrobial particles to base polymer is between 1 to 7 and 1 to 1 to produce an antimicrobial polymer, wherein the antimicrobial polymer comprises antimicrobial particles in a concentration from 22 wt. % to 50 wt. %;adding a water scavenger during the compounding of the antimicrobial metal particles with the base polymer; andafter compounding, heating the antimicrobial polymer to react the polymer in the antimicrobial polymer with hydroxyl groups attached to the antimicrobial particles to a reaction temperature between the glass transition temperature and the melting temperature of the polymer in the antimicrobial polymer to produce an antimicrobial masterbatch.2. The method of claim 1 , wherein the heating results in an increase in the intrinsic viscosity of the polymer in the antimicrobial polymer.3. The method of claim 1 , wherein the reaction temperature is from 100° C. below the melting temperature to the melting temperature of the polymer in the antimicrobial polymer claim 1 ,4. The method of claim 1 , wherein the reaction temperature is from 200° C. below the melting temperature to a temperature 10° C. claim 1 , below the melting temperature of the polymer in the antimicrobial polymer.5. The method of claim 1 , wherein the ...

Resin powder for solid freeform fabrication, device for solid freeform fabrication object, and method of manufacturing solid freeform fabrication object

A resin powder for solid freeform fabrication includes a particle having a pillar-like form, wherein the ratio of the height of the particle to the diameter or the long side of the bottom of the particle is 0.5 to 2.0, the particle has a 50 percent cumulative volume particle diameter of from 5 to 200 μm, and the ratio (Mv/Mn) of the volume average particle diameter (Mv) to the number average particle diameter (Mn) of the particle is 2.00 or less.

Compositions and Methods for Improved Abrasion Resistance of Polymeric Components

Described herein are component compositions comprising a blend of a polymer resin together with silica glass beads. In certain embodiments, the components demonstrate improved abrasion resistance as do the industrial fabrics produced that comprise at least one component of the instant disclosure. 1. A method of manufacturing a resin component composition comprising a polymer resin , silica glass beads , wherein said silica glass beads are added simultaneously to said polymer resin , which is then extruded or spun.2. A method of manufacturing a resin component composition according to claim 1 , further comprising siloxane additive claim 1 , wherein a siloxane additive and said silica glass beads are added simultaneously to said polymer resin claim 1 , which is then extruded or spun.3. A method of manufacturing the composition according to claim 1 , comprising one or more polymers selected from the group consisting of: polyethylene naphthalate (PEN) claim 1 , polyethylene terephthalate (PET) claim 1 , polybutylene naphthalate (PBN) claim 1 , polytrimethylene naphthalate (PTN) claim 1 , poly(cyclohexylene dimethylene terephthalate) acid (PCTA) claim 1 , polybutylene terephthalate (PBT) claim 1 , polyamide (PA 6 claim 1 , PA 6 claim 1 ,6 claim 1 , PA 6 claim 1 ,12 claim 1 , PA 6 claim 1 ,10 claim 1 , PA 4 claim 1 ,6 claim 1 , PA 10 claim 1 , PA 11 claim 1 , PA 12; MXD6 claim 1 , and aromatic derivatives thereof) claim 1 , polyether ether ketone (PEEK) claim 1 , polyether ketone (PEK) claim 1 , poly(p-phenylene sulfide) (PPS/RYTON®) claim 1 , polyurethane claim 1 , polysiloxane claim 1 , and copolymers thereof.4. A method of manufacturing the composition according to claim 3 , comprising two or more polymers selected from the group consisting of: polyethylene naphthalate (PEN) claim 3 , polyethylene terephthalate (PET) claim 3 , polybutylene naphthalate (PBN) claim 3 , polytrimethylene naphthalate (PTN) claim 3 , poly(cyclohexylene dimethylene terephthalate) acid (PCTA) ...

Medical devices containing compositions of poly(butylene succinate) and copolymers thereof

Resorbable implants, coverings and receptacles comprising poly(butylene succinate) and copolymers thereof have been developed. The implants are preferably sterilized, and contain less than 20 endotoxin units per device as determined by the limulus amebocyte lysate (LAL) assay, and are particularly suitable for use in procedures where prolonged strength retention is necessary, and can include one or more bioactive agents. The implants may be made from fibers and meshes of poly(butylene succinate) and copolymers thereof, or by 3d printing molding, pultrusion or other melt or solvent processing method. The implants, or the fibers preset therein, may be oriented. These coverings and receptacles may be used to hold, or partially/fully cover, devices such as pacemakers and neurostimulators. The coverings, receptacles and implants described herein, may be made from meshes, webs, lattices, non-wovens, films, fibers, foams, molded, pultruded, machined and 3D printed forms.

ECO-FRIENDLY POLYESTER FIBERS AND MICROFIBER SHED-RESISTANCE POLYESTER TEXTILES

The present application is generally concerned with polyester-based fibers, which exhibit enhanced resistance to breakage and attritional wear. More particularly, the inventive fibers may be especially aimed at textile applications, wherein the inventive fibers may reduce the propensity of the textile materials to produce microplastic and nanoplastic particles during use and during laundering or other cleaning operations, which are a known pollution hazard in the natural environment. 1. A melt-spun polyester fiber for reducing microplastics pollution , wherein said melt-spun polyester fiber is in the form of:(i) a core-sheath bicomponent polyester fiber comprising a core domain and a sheath domain, wherein said core domain comprises a poly(alkylene terephthalate) and said sheath domain comprises a homopolyester or copolyester and at least one shed-resistance additive; or(ii) a monocomponent polyester fiber comprising a poly(alkylene terephthalate), wherein said monocomponent polyester fiber is at least partially coated with a shed-resistance coating.2. The melt-spun polyester fiber according to claim 1 , wherein said poly(alkylene terephthalate) comprises poly(1 claim 1 ,2-ethylene terephthalate) claim 1 , poly(1 claim 1 ,3-propylene terephthalate) claim 1 , or poly(1 claim 1 ,4-butylene terephthalate) claim 1 , andwherein said homopolyester or said copolyester comprises poly(1,2-ethylene terephthalate), poly(1,3-propylene terephthalate), or poly(1,4-butylene terephthalate).3. The melt-spun polyester fiber according to claim 2 , wherein said melt-spun polyester fiber is said core-sheath bicomponent polyester fiber.4. The melt-spun polyester fiber according to claim 3 , wherein said sheath domain comprises an inner layer and an outer layer.5. The melt-spun polyester fiber according to claim 4 , wherein said inner layer and said outer layer are formed from different polyesters.6. The melt-spun polyester fiber according to claim 3 , wherein said melt-spun polyester ...

CLOTHING COMPRISING A FABRIC, COMPRISING ELASTIC FIBERS

Sports clothing, protective clothing, clothing for body shaping and clothing with a medical function, which clothing comprises at least one fabric comprising elastic fibers, which elastic fibers are produced from a polymer composition comprising a copolymer containing 20-80 wt. % of monomeric units of a dimerised fatty acid or a derivative thereof and further monomer units of at least one dicarboxylic acid and at least one diol. 1. Sports clothing , protective clothing , clothing for body shaping and clothing with a medical function , wherein the clothing comprises at least one fabric comprising elastic fibers , which elastic fibers are produced from a polymer composition comprising a copolymer containing 20-80 wt. % of monomeric units of a dimerised fatty acid or a derivative thereof and further monomer units of at least one dicarboxylic acid and at least one diol.2. Sports clothing claim 1 , protective clothing claim 1 , clothing for body shaping and clothing with a medical function according to claim 1 , wherein the copolymer contains between 20 and 70 wt. % of the monomer units of the dimerised fatty acid and/or a derivative thereof.3. Sports clothing claim 1 , protective clothing claim 1 , clothing for body shaping and clothing with a medical function according to claim 1 , wherein the copolymer contains between 30 and 50 wt. % of the monomer units of the dimerised fatty acid and/or a derivative thereof.4. Sports clothing claim 1 , protective clothing claim 1 , clothing for body shaping and clothing with a medical function according to claim 1 , wherein the at least one dicarboxylic acid is terephthalic acid.5. Sports clothing claim 1 , protective clothing claim 1 , clothing for body shaping and clothing with a medical function according to claim 1 , wherein at least one diol is 1 claim 1 ,4-butanediol.6. Sports clothing claim 1 , protective clothing claim 1 , clothing for body shaping and clothing with a medical function according to claim 1 , wherein the ...

COPOLYMER FIBER AND ASSOCIATED METHOD AND ARTICLE

A copolymer fiber is prepared from a composition that includes specific amounts of a block polyestercarbonate-polysiloxane and a flame retardant. The fiber has an equivalent circular diameter of 10 to 60 micrometers. Also described are a method of forming the fiber, and various articles incorporating the fiber, including woven fabrics, knit fabrics, and nonwoven fabrics. 2. The fiber of claim 1 , wherein the block polyestercarbonate-polysiloxane comprises 0.5 to 2 weight percent dimethylsiloxane units.3. The fiber of claim 1 , wherein the organophosphate ester comprises an oligomeric phosphate ester.4. (canceled)5. The fiber of claim 1 , wherein the composition comprises claim 1 , based on the total weight of the composition claim 1 , 91 to 96 weight percent of the block polyestercarbonate-polysiloxane claim 1 , and 4 to 9 weight percent of the flame retardant.6. The fiber of claim 1 , wherein the total amount of the block polyestercarbonate-polysiloxane and the flame retardant is 98 to 100 weight percent.8. The fiber of claim 1 , wherein the composition comprises 0 to 1 part per million by weight of colorants.10. The method of claim 9 , wherein the melt spinning is characterized by a draw down ratio of 280 to 550 claim 9 , an apparent shear rate of 170 to 1700 second claim 9 , and a mechanical draw ratio of 0.95 to 1.2.11. An article comprising the fiber of .12. The article of claim 11 , wherein the article comprises a woven fabric comprising the fiber.13. The article of claim 11 , wherein the article comprises a knit fabric comprising the fiber.14. The article of claim 11 , wherein the article comprises a nonwoven fabric comprising the fiber. Polyestercarbonate-polysiloxanes are copolymers exhibiting a desirable balance of flame retardancy and ductility. To date, such copolymers and their compositions have been used primarily in injection molding, sheet extrusion, and additive manufacturing applications. Polyestercarbonate-polysiloxanes have been used for the ...

Liquid crystal polyester fibers

Liquid crystal polyester fibers containing a liquid crystal polyester, in which the liquid crystal polyester has a repeating unit represented by Formula (1), a repeating unit represented by Formula (2), and a repeating unit represented by Formula (3), at least one repeating unit selected from the group consisting of the repeating unit represented by Formula (1), the repeating unit represented by Formula (2), and the repeating unit represented by Formula (3) contains a 2,6-naphthylene group, a content of the repeating unit containing the 2,6-naphthylene group is 40 mol % or greater with respect to a total content of all the repeating units of the liquid crystal polyester, and an orientation degree of the liquid crystal polyester in a length direction of the fiber is 89% to 95%. (1) —O—Ar 1 —CO—, (2) —CO—Ar 2 —CO—, and (3) —X—Ar 3 —Y—, wherein Ar 1 represents a phenylene group, a naphthylene group, or a biphenylylene group, Ar 2 and Ar 3 each independently represent a phenylene group, a naphthylene group, or a biphenylylene group, and at least one selected from the group consisting of Ar 1 , Ar 2 , and Ar 3 contains a 2,6-naphthylene group. X and Y each independently represent an oxygen atom or an imino group (—NH—). Hydrogen atoms of the group represented by Ar 1 , Ar 2 , or Ar 3 may be each independently substituted with a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms.

FILAMENT FOR MATERIAL EXTRUSION-TYPE THREE-DIMENSIONAL PRINTERS, WOUND BODY COMPOSED OF SAID FILAMENT, CARTRIDGE CONTAINING SAID FILAMENT, AND METHOD FOR PRODUCING RESIN MOLDED ARTICLE USING SAID FILAMENT

An object of the invention is to provide a filament for a material extrusion-type three-dimensional printer, which filament contains an aromatic polyester resin, and which overcomes the shortcomings of a filament for a material extrusion-type three-dimensional printer that is composed of an ABS resin. Provided is a filament for a material extrusion-type three-dimensional printer, the filament including an aromatic polyester resin containing 50 mol % or more of aromatic dicarboxylic acid units, and 3 mol % or more of isophthalic acid units, with respect to the total amount of dicarboxylic acid units. The aromatic polyester resin preferably has a melt flow rate (230° C., 2.16 kgf) of 7 g/10 min or more, and an intrinsic viscosity of 0.80 dL/g or less. 1. A filament for a material extrusion-type three-dimensional printer , the filament comprising an aromatic polyester resin containing 50 mol % or more of aromatic dicarboxylic acid units , and 3 mol % or more of isophthalic acid units , with respect to the total amount of dicarboxylic acid units.2. The filament for a material extrusion-type three-dimensional printer according to claim 1 , wherein the aromatic polyester resin comprises 50 mol % or more of ethylene glycol units with respect to the total amount of diol units.3. The filament for a material extrusion-type three-dimensional printer according to claim 1 , wherein the aromatic polyester resin comprises 3 mol % or more and 50 mol % or less of isophthalic acid units with respect to the total amount of dicarboxylic acid units.4. The filament for a material extrusion-type three-dimensional printer according to claim 1 , wherein the aromatic polyester resin has a melt flow rate (230° C. claim 1 , 2.16 kgf) of 7 g/10 min or more and 100 g/10 min or less.5. The filament for a material extrusion-type three-dimensional printer according to claim 1 , wherein the aromatic polyester resin has an intrinsic viscosity of 0.80 dL/g or less.6. The filament for a material ...

COPOLYESTERIMIDES DERIVED FROM N,N'-BIS-(HYDROXYALKYL)-BENZOPHENONE-3,3',4,4'-TETRACARBOXYLIC DIIMIDE AND FILMS MADE THEREFROM

A copolyester includes repeating units derived from an aliphatic glycol, terephthalic acid, and the monomer of formula (I): 2. The copolyester according to wherein said copolyester exhibits a degree of crystallinity of at least about 5%.3. The copolyester according to wherein said copolyester exhibits a degree of crystallinity of at least about 10%.4. The copolyester according to wherein said copolyester exhibits a degree of crystallinity of at least about 15%.5. The copolyester according to wherein said copolyester exhibits a degree of crystallinity of at least about 20%.6. The copolyester according to wherein the aliphatic glycol is selected from C claim 1 , Cor Caliphatic diols.7. The copolyester according to wherein the aliphatic glycol is ethylene glycol.8. The copolyester according to wherein the number of carbon atoms in the aliphatic glycol is the same as the number (n) in comonomer (I).9. The copolyester according to wherein n=2.12. The process according to claim 11 , wherein the copolyester of formula (I) is manufactured by condensation or ester interchange.13. The process according to claim 12 , wherein said condensation or ester interchange occurs at temperatures up to about 310° C.14. The process according to claim 11 , wherein said process comprises the steps of:i. reacting said aliphatic glycol with said terephthalic acid to form a bis(hydroxyalkyl)-terephthalate;ii. reacting said bis(hydroxyalkyl)-terephthalate with a monomer of formula (I) under conditions of elevated temperature and pressure in the presence of a catalyst.15. The process according to claim 11 , wherein the annealing temperature is from about 160 to about 220° C.16. The process according to claim 11 , wherein the annealing time is from about 30 minutes to about 4 hours.17. The process according to claim 11 , wherein the annealing time is from about 1 to about 3 hours.18. The process according to claim 11 , wherein the annealing time is about 2 hours.19. The process according to claim ...

BIO-BASED MEG AND POLYESTER FIBER COMPOSITIONS AND METHODS OF MAKING THE SAME

Disclosed are bio-based polyester fibers, particularly a PET fibers, and a method of making the same by: contacting a bio-based MEG composition with a diacid composition to form a polyester composition; and spinning and/or drawing the resulting polyester composition into a fiber; wherein the bio-based MEG composition comprises: a) monoethylene glycol (MEG); and b) from about 1 ppm to about 5000 ppm of at least one C-C1,2-diol, wherein the C-C1, 2-diol is linear, branched, or cyclic. 1. A method of making a bio-based polyester fiber comprising the steps of:contacting a bio-based MEG composition with a diacid composition to form a polyester composition; andspinning and/or drawing the resulting polyester composition into a fiber;{'sub': 3', '12', '3', '12, 'wherein the bio-based MEG composition comprises: a) monoethylene glycol (MEG); and b) from about 1 ppm to about 5000 ppm of at least one C-C1,2-diol, wherein the C-C1, 2-diol is linear, branched, or cyclic.'}2. The method according to claim 1 , wherein the bio-based MEG composition further comprises: c) 2-[(5-methyltetrahydro-2-furanyl)methoxy]ethanol.3. The method according to claim 1 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 1 claim 1 ,2-propanediol.4. The method according to claim 1 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 1 claim 1 ,2-butanediol.5. The method according to claim 1 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 1 claim 1 ,2-pentanediol.6. The method according to claim 1 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 1 claim 1 ,2-hexanediol.7. The method according to claim 1 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 1 claim 1 ,2-cyclopentanediol.8. The method according to claim 2 , wherein the bio-based MEG composition comprises from about 1 to about 1000 ppm of 2-[(5-methyltetrahydro-2-furanyl) ...

Polyhydroxyalkanoate Medical Textiles and Fibers

Absorbable polyester fibers, braids, and surgical meshes with prolonged strength retention have been developed. These devices are preferably derived from biocompatible copolymers or homopolymers of 4-hydroxybutyrate. These devices provide a wider range of in vivo strength retention properties than are currently available, and could offer additional benefits such as anti-adhesion properties, reduced risks of infection or other post-operative problems resulting from absorption and eventual elimination of the device, and competitive cost. The devices may also be particularly suitable for use in pediatric populations where their absorption should not hinder growth, and provide in all patient populations wound healing with long-term mechanical stability. The devices may additionally be combined with autologous, allogenic and/or xenogenic tissues to provide implants with improved mechanical, biological and handling properties.

Polyester composition with improved dyeing properties

A copolymer composition is disclosed with advantages for textile fibers, yarns, blended yarns, fabrics, and garments. The composition includes polyester copolymer, between about 4.5 and 5.5 percent adipic acid based on the amount of copolymer, between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of copolymer, and between about 3.4 and 4.2 percent polyethylene glycol based on the amount of copolymer.

THERMOPLASTIC FIBRES WITH REDUCED SURFACE TENSION

The present invention relates to a process for producing thermoplastic fibres having reduced surface tension and also to products obtainable by the melt-spinning process from these thermoplastic fibres having reduced surface tension, wherein the thermoplastic to be used is admixed with a copolymer of at least one α-olefin and at least one acrylic or methacrylic ester of an aliphatic alcohol. 1. Process for reducing the surface tension of thermoplastic-based fibres or filaments , the process comprising:introducing into the thermoplastic at least one E/X copolymer of an α-olefin and an acrylic or methacrylic ester of an unsubstituted aliphatic alcohol having 6 to 30 carbon atoms to produce a thermoplastic-copolymer mixture, wherein the thermoplastic is polyamide or polyester; andmelt-spinning the thermoplastic-copolymer mixture into fibres or filaments.2. Process according to claim 1 , wherein the polyesters are polyalkylene terephthalates.3. Process according to claim 1 , wherein the polyamides are aliphatic polyamides.4. Process according to claim 1 , wherein mixtures are used for spinning which are based on 99.9 to 10 parts by weight of at least one thermoplastic and 0.1 to 20 parts by weight of copolymer.5. Process according to claim 1 , wherein the α-olefins have between 2 and 10 carbon atoms and may be unsubstituted or substituted with one or more aliphatic claim 1 , cycloaliphatic or aromatic groups.6. Process according to claim 5 , wherein the α-olefins are selected from the group consisting of ethane claim 5 , propene claim 5 , 1-butene claim 5 , 1-pentene claim 5 , 1-hexene claim 5 , 1-octene claim 5 , 3-methyl-1-pentene claim 5 , and mixtures of these α-olefins.7. Process according to claim 5 , wherein the α-olefin content of the copolymer is between 50 and 90 wt %.8. Process according to claim 1 , further comprising adding at least one of: dyes claim 1 , further hydrophobicizing agents claim 1 , delustrants claim 1 , stabilizers claim 1 , antistats claim 1 ...

POLYESTER COMPOSITION WITH IMPROVED DYEING PROPERTIES

A copolymer composition is disclosed with advantages for textile fibers, yarns, blended yarns, fabrics, and garments. The composition includes polyester copolymer, between about 4.5 and 5.5 percent adipic acid based on the amount of copolymer, between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of copolymer, and between about 3.4 and 4.2 percent polyethylene glycol based on the amount of copolymer. 1. A polyester copolymer filament comprising:a composition of between about 4.5 and 5.5 percent adipic acid based on the amount of polyester copolymer, between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of polyester copolymer, between about 3.4 and 4.2 percent polyethylene glycol based on the amount of polyester copolymer, and less than 2 percent diethylene glycol based on the amount of polyester copolymer.2. A textured filament made from the filament of .3. A fabric formed from the yarn of and selected from the group consisting of woven fabrics and knitted fabrics.4. A textured filament according to that receives and retains reactive dye at atmospheric pressure and at temperatures below 212° F. (100° C.).5. Staple fibers cut from the textured filament of .6. A blend of cotton fibers and the staple fibers of .7. A blended yarn comprising:between about 20 percent and 80 percent by weight cotton; andtextured polyester copolymer staple fibers composed of between about 4.5 and 5.5 percent adipic acid based on the amount of polyester copolymer, between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of polyester copolymer, between about 3.4 and 4.2 percent polyethylene glycol based on the amount of polyester copolymer, and less than 2 percent diethylene glycol based on the amount of polyester copolymer.8. A colorfast yarn according to further comprising a reactive dye.9. A fabric formed from the yarn of .10. A fabric according to selected from the group consisting of ...

Fully dull polyester drawn yarn and preparing method thereof

A type of fully dull polyester drawn yarns and a preparing method thereof are disclosed. The preparing method is to melt spinning a modified polyester with the fully drawn yarn (FDY) technique, and the modified polyester is a product of an esterification and successive polycondensation reactions of evenly mixed terephthalic acid, ethylene glycol, 2,5,6,6-tetramethyl-2,5-heptanediol, a fluorinated dicarboxylic acid, a matting agent, a calcined multiphase solid acid base powder and a doped Bi2O3 powder. The obtained fiber has an intrinsic viscosity drop of 18-26% when stored at 25° C. and R.H. 65% for 60 months. The method of improving the degradation performance of polyester fiber through the incorporation of 2,5,6,6-tetramethyl-2,5-heptanediol, the fluorinated dicarboxylic acid, the doped Bi2O3 powder and the calcined multiphase solid acid base powder is easy to operate.

COMPOSITIONS AND METHODS FOR IMPROVED ABRASION RESISTANCE OF POLYMERIC COMPONENTS

Described herein are component compositions comprising a blend of a polymer resin together with silica glass beads. In certain embodiments, the components demonstrate improved abrasion resistance as do the industrial fabrics produced that comprise at least one component of the instant disclosure. 1. A resin component composition comprising:at least one polymer resin; andat least one type of silica glass bead.2. The composition according to claim 1 , wherein the silica glass bead comprises a metal oxide.3. The composition according to claim 2 , wherein the silica glass bead is selected from A-glass and E-glass beads.4. The composition according to claim 1 , wherein about 4% to about 98% of said composition by weight comprises a polymer resin.5. The composition according to claim 1 , wherein about 1% to about 4% of said composition by weight comprises silica glass beads.6. The composition according to claim 4 , wherein about 1% to about 4% of said composition by weight comprises silica glass beads.7. The composition according to wherein about 0.5% to about 5% of said composition by weight comprises a siloxane content additive.8. The composition according to or claim 6 , wherein said silica glass beads are between 0.01-10 microns in average particle size diameter.9. The composition according to claim 8 , wherein said silica glass beads are between 0.1-10 microns in average particle size diameter.10. The composition according to claim 9 , wherein said silica glass beads are between 1-10 microns in average particle size diameter.11. The composition according to claim 1 , wherein said polymer resin comprises at least one polymer selected from the group consisting of: polyethylene naphthalate (PEN) claim 1 , polyethylene terephthalate (PET) claim 1 , polybutylene naphthalate (PBN) claim 1 , polytrimethylene naphthalate (PTN) claim 1 , poly(cyclohexylene dimethylene terephthalate) acid (PCTA) claim 1 , polybutylene terephthalate (PBT) claim 1 , polyamide (PA 6; PA 6 claim 1 ...

COPOLYESTER RESIN FOR PREPARING A LOW-MELTING COPOLYESTER FIBER, THE LOW-MELTING COPOLYESTER FIBER PREPARED THEREFROM, AND PROCESS FOR PREPARING THE LOW-MELTING COPOLYESTER FIBER

A copolyester resin for preparing a low-melting copolyester fiber is made by compounding a first copolyester with a second copolyester in a weight ratio of the first copolyester to the second copolyester of from 94:6 to 98:2. The first copolyester is obtained by subjecting terephthalic acid, ethylene glycol, isophthalic acid, and diethylene glycol to a copolymerization, and the second copolyester is obtained by subjecting terephthalic acid, ethylene glycol, and neopentyl glycol to another copolymerization. 1. A copolyester resin for preparing a low-melting copolyester fiber , made by compounding a first copolyester with a second copolyester in a weight ratio of the first copolyester to the second copolyester of from 94:6 to 98:2 , whereinthe first copolyester is obtained by subjecting terephthalic acid, ethylene glycol, isophthalic acid, and diethylene glycol to a copolymerization, andthe second copolyester is obtained by subjecting terephthalic acid, ethylene glycol, and neopentyl glycol to another copolymerization.2. The copolyester resin as claimed in claim 1 , wherein the isophthalic acid is in an amount ranging from 38 mol % to 40 mol % based on a total molar amount of the terephthalic acid and the isophthalic acid.3. The copolyester resin as claimed in claim 1 , wherein the diethylene glycol is in an amount ranging from 6 mol % to 8 mol % based on a total molar amount of the ethylene glycol claim 1 , the diethylene glycol claim 1 , and the neopentyl glycol.4. The copolyester resin as claimed in claim 1 , wherein the neopentyl glycol is in an amount ranging from 1 mol % to 1.6 mol % based on a total molar amount of the ethylene glycol claim 1 , the diethylene glycol claim 1 , and the neopentyl glycol.5. The copolyester resin as claimed in claim 1 , wherein the weight ratio of the first copolyester to the second copolyester is in a range from 95:5 to 97:3.6. A low-melting copolyester fiber prepared by a process comprising the steps of: the first copolyester is ...

Recycled Polyethylene Terephthalate Compositions, Fibers and Articles Produced Therefrom, and Methods For Producing Same

In one aspect, the invention relates to recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same. In a further aspect, the invention relates to homogenized post-consumer polyethylene terephthalate. In a further aspect, the invention relates to extruded polymer compositions, polymer mixtures, fibers, and/or Bulked Continuous Filament fibers comprising post-consumer polyethylene terephthalate. In a further aspect, the invention relates to processes for preparing recycled polyethylene terephthalate compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. 139-. (canceled)40. An extruded polymer composition comprising polyethylene terephthalate present as from about 25% to about 100% homogeneously blended deposit post-consumer polyethylene terephthalate by weight and balance virgin polyethylene terephthalate , wherein the homogeneously blended deposit post-consumer polyethylene terephthalate comprises at least one impurity not present in virgin polyethylene terephthalate; and wherein the at least one impurity comprises floatable contamination in an amount less than 15 ppm , PVC contamination in an amount less than 50 ppm , or a combination thereof.41. The composition of claim 40 , wherein the polyethylene terephthalate is present as at least about 50% homogeneously blended deposit post-consumer polyethylene terephthalate by weight.42. The composition of claim 40 , wherein the polyethylene terephthalate is present as at least about 75% homogeneously blended deposit post-consumer polyethylene terephthalate by weight.43. The composition of claim 40 , wherein the at least one impurity present in the homogeneously blended deposit post-consumer polyethylene terephthalate comprises floatable contamination present in an amount less than 15 ppm and PVC contamination in an amount less than 50 ppm.44. A ...

Polyesters and fibers made therefrom

Disclosed herein are polyesters and fibers made therefrom. The fiber comprises a polymer, poly(trimethylene furandicarboxylate) (PTF), and PTF based copolymers.

POLYESTER COMPOSITION WITH IMPROVED DYEING PROPERTIES

A copolymer composition is disclosed with advantages for textile fibers, yarns, blended yarns, fabrics, and garments. The composition includes polyester copolymer, between about 4.5 and 5.5 percent adipic acid based on the amount of copolymer, between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of copolymer, and between about 3.4 and 4.2 percent polyethylene glycol based on the amount of copolymer. 1. A composition with advantages for textile fibers , and comprising a melt of:polyester precursors selected from the group consisting of terephthalic acid, dimethyl terephthalate, and ethylene glycol;adipic acid in an amount sufficient to give filaments and fibers made from said melt a dye receptively similar to cotton at atmospheric pressure;pentaerythritol in an amount sufficient to give pill resistance to yarns blended of cotton with fibers made from said melt;polyethylene glycol in an amount sufficient to give said melt the elasticity necessary to produce extruded filament from the melt;said melt being maintained at a temperature of between about 285° F. and 295° F., and at an intrinsic viscosity of between about 0.58 and 0.82.2. A polymerized melt according to containing less than 2 percent diethylene glycol (DEG).3. A polymerized melt according to at an intrinsic viscosity of 0.75.4. A polyester copolymer filament made from the melt of .5. A dyed yarn formed of a blend of:cotton fibers; and{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'staple fibers cut from a textured filament made from the filament of .'}6. A copolymer composition with advantages for textile fibers; said composition comprising:polyester copolymer;between about 4.5 and 5.5 percent adipic acid based on the amount of copolymer;between about 630 and 770 parts per million (ppm) of pentaerythritol based on the amount of copolymer; andbetween about 3.4 and 4.2 percent polyethylene glycol based on the amount of copolymer.7. A composition according to containing ...

POLYMER SUITABLE FOR ADDITIVE MANUFACTURING

Polymers and formulated compositions are designed to have properties that allow their effective use in additive manufacturing processes, particularly for preparing articles wherein molten monofilament polymer is laid down on top of a previously deposited line of molten monofilament polymer. 1. A kit comprising an assembly inside of a pouch , the assembly comprising a monofilament fiber wound around a spool , the monofilament fiber comprising a polyaxial polymer of a formula M(B)or M(B) , wherea) M is a copolymer comprising a plurality of repeating units, where at least 70 mol % of the repeating units in M are a polymerization product of at least one of trimethylene carbonate and epsilon-caprolactone; whenb) B is a homopolymer or a copolymer comprising a plurality of repeating units, where at least 70 mol % of the repeating units in B are a polymerization product of at least one of glycolide and lactide; or wherec) M comprises a plurality of repeating units, where at least 50 mol % of the repeating units in M are a polymerization product of at least one of trimethylene carbonate and epsilon-caprolactone; whend) B comprises a plurality of repeating units, where at least 50 mol % of the repeating units in B are a polymerization product of at least one of glycolide and lactide.26-. (canceled)7. The kit of wherein the monofilament fiber is undrawn.8. The kit of wherein the monofilament fiber has an orientation factor of less than 50%.919-. (canceled)20. The kit of further comprising instructions for using the assembly in a method of additive manufacturing.21. An assembly comprising a monofilament fiber wound around a spool claim 1 , the monofilament fiber comprising a polyaxial polymer of a formula M(B)or M(B) claim 1 , where (a) M is a copolymer comprising a plurality of repeating units claim 1 , where at least 70 mol % of the repeating units in M are a polymerization product of at least one of trimethylene carbonate and epsilon-caprolactone claim 1 , where B is a ...

BIODEGRADABLE RESIN COMPOSITION AND FISHING NET PRODUCED FROM SAME

The present invention relates to a biodegradable resin having outstanding colouring properties, and provides a resin composition which does not give rise to problems such as reduced strength due to colouration. The composition of the present invention, suggests that a PBSAT resin is used as a biodegradable resin, and colouration is performed with same. Also, at this time, the colourant can be mixed in the form of masterbatch. In the present invention, the resin composition is used in the production of various products, in particular monofilament yarn produced via spinning and a fishing net manufactured from same is provided. Fishing nets such as the above are advantageous in that such fishing nets can be realized in various colours in accordance with customer requirements and satisfy the required strength and, after use, degrade naturally in seawater and so do not give rise to problems like environmental pollution. 1. A biodegradable resin composition comprising a colorant that is included at 0.005 to 0.015 parts by weight with respect to 100 parts by weight of a polybutylene succinate-co-adipate-co-terephthalate) (PBSAT) resin.2. The biodegradable resin composition according to claim 1 , wherein the colorant is one or more selected from the group consisting of phthalocyanine green claim 1 , carbon black claim 1 , phthalocyanine blue claim 1 , an iron oxide claim 1 , and triphenylmethane.3. The biodegradable resin composition according to claim 1 , the colorant is provided in the form of a masterbatch having a structure that includes a colorant and a biodegradable resin which covers the colorant.4. The biodegradable resin composition according to claim 1 , the PBSAT resin has a molecular weight (Mw) in a range of 100 claim 1 ,000 to 200 claim 1 ,000.5. The biodegradable resin composition according to claim 1 , the PBSAT resin includes a residue of succinic acid:adipic acid:phthalic acid in a range of 70 to 90:5 to 15:5 to 15 mol %.6. Monofilament yarn manufactured ...

Fiber and method of manufacturing the same

A fiber is provided, which includes a polyester copolymerized of a diacid monomer, an esterified diacid monomer or a combination thereof with a polyol monomer. The diacid monomer, the esterified diacid monomer or a combination thereof includes (1) furan dicarboxylic acid, dialkyl furandicarboxylate, or a combination thereof or (2) furan dicarboxylic acid, dialkyl furandicarboxylate, or a combination thereof and spiro-diacid. The polyol monomer includes (3) C 2 -C 14 polyol or (4) C 2 -C 14 polyol and spiro-diol. The diacid monomer, the esterified diacid monomer or a combination thereof and the polyol monomer meet the following conditions: (a) The diacid monomer, the esterified diacid monomer or a combination thereof includes (2) furan dicarboxylic acid, dialkyl furandicarboxylate, or a combination thereof and spiro-diacid, (b) The polyol monomer includes (4) C 2 -C 14 polyol and spiro-diol, or (c) a combination thereof. The polyester has an inherent viscosity at 30° C. of 0.5 dL/g to 1.5 dL/g.

ALIPHATIC-AROMATIC POLYESTER HAVING ELEVATED WHITENESS INDEX

The present invention relates to an aliphatic-aromatic polyester having a whiteness index according to ASTM E 313-73 of at least 25, to a process for preparation thereof and to the use of the aliphatic-aromatic polyester for production of polyester fibers (PF). The present invention further relates to the polyester fibers (PF) comprising the aliphatic-aromatic polyester. 1. An aliphatic-aromatic polyester obtainable by condensation at least of components (A) , (B) , (C) and optionally (D):(A) 40 to 70 mol %, based on components (A) and (B), of adipic acid and/or at least one adipic acid derivative,(B) 30 to 60 mol %, based on components (A) and (B), of at least one aromatic 1,ω-dicarboxylic acid and/or at least one 1,ω-dicarboxylic acid derivative,(C) 98 to 102 mol %, based on components (A) and (B), of at least one aliphatic 1,ω-diol, and(1)) 0% to 5% by weight, based on the total weight of components (A) to (C), of at least one chain extender,wherein the aliphatic-aromatic polyester has a whiteness index according to ASTM E 313-73 of at least 25, and wherein the condensation comprises the four stages i) to iv):i) a continuous esterification,ii) a precondensation,iii) a postcondensation, andiv) a polyaddition reaction,wherein 0.03% to 0.04% by weight of a phosphorus compound is added to the precondensation product obtained in the second stage after process step ii) and before and/or during process step iii), based on the total weight of the precondensation product.2. An aliphatic-aromatic polyester according to claim 1 , wherein the aliphatic-aromatic polyester has a whiteness index according to ASTM E 313-73 of 25 to 40.3. An aliphatic-aromatic polyester according to claim 1 , wherein the aliphatic-aromatic polyester has an acid number measured according to DIN EN ISO 2114:2002-06 in the range from 1.1 to 1.4 mg KOH/g.4. An aliphatic-aromatic polyester according to claim 1 , wherein the aliphatic-aromatic polyester has a viscosity number according to DIN 53728 in ...

BIODEGRADABLE POLYESTER FABRIC AND PREPARATION METHODS THEREOF

A biodegradable polyester fabric and preparation methods thereof are disclosed. A biodegradable additive is added to PET (Polyethylene Terephthalate) to allow rapid biodegradation of a textile material in soil, achieving the advantages of environment protection and the like. In addition, different raw materials can be selected for the PET. When recyclable PET bottles, PET packages or polyester fabrics are selected, the waste PET bottles, PET packages or polyester fabrics can be recycled and reused to prepare a biodegradable type of product, which not only reduces economic cost but also achieves multiple advantages such as environmental protection. For the biodegradable polyester fabric, a dye additive can also be added while adding the biodegradable additive to prepare a dye-doped biodegradable polyester fabric, thereby preventing the production of dye wastewater to achieve the purpose of environment protection and moreover, to reduce the preparation cost, with a new biodegradable polyester fabric obtained. 1. Biodegradable polyester yarn and fabric , comprising:PET (Polyethylene Terephthalate); anda biodegradable additive, wherein the PET is refined from crude oil, and the biodegradable additive is mixed particles of aliphatic-aromatic ester, modified polylactides, organoleptic monosaccharides and aldohexose.2. The biodegradable polyester fabric of claim 1 , wherein:the content of the biodegradable additive is 0.1% w/w-5% w/w.3. Biodegradable polyester yarn and fabric claim 1 , comprising:PET; anda biodegradable additive, wherein the PET is recycled from recyclable PET bottles, PET packages or polyester fabrics, and the biodegradable additive is mixed particles of aliphatic-aromatic ester, modified polylactides, organoleptic monosaccharides and aldohexose.4. The biodegradable polyester fabric of claim 3 , wherein:the content of the biodegradable additive is 0.1% w/w-5% w/w.5. Biodegradable polyester yarn and fabric claim 3 , comprising:PET;a dye additive; anda ...

POLYESTER COMPOUNDS HAVING ENHANCED HYDROPHOBIC SURFACE PROPERTIES

A masterbatch having reactive silicone as a hydrophobic additive, the polyester compound that the silicone-containing masterbatch has been let down into, and the plastic articles and films from such compounds having enhanced hydrophobic properties are disclosed. Films having a Water Contact Angle of at least 76° (ASTM D7490-08) are exemplified. 1. A masterbatch for polyester , comprising:(a) polyester carrier;{'o': {'@ostyle': 'single', 'ω'}, '(b) α,-difunctional polydimethylsiloxane;'}(c) a chain extender selected from the group consisting of pyromellitic dianhydride, Bis(2,4-ditert-butylphenyl) pentaerytritol diphosphite, styrene methyl methacrylate glycidyl methacrylate terpolymer, and combinations thereof; and(d) optionally, other additives comprising a catalyst.3. The masterbatch of claim 1 , wherein the α claim 1 ,-difunctional polydimethylsiloxane comprises epoxy-functional siloxanes or carbinol-functional siloxanes.4. A hydrophobic polyester compound comprising the masterbatch of and polyester resin.5. An enhanced hydrophobic polyester compound comprising:(a) polyester matrix and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(b) a hydrophobic polyester masterbatch of .'}6. The polyester compound of claim 5 , wherein the α claim 5 ,-difunctional polydimethylsiloxane of the masterbatch comprises epoxy-functional siloxanes or carbinol-functional siloxanes.7. The polyester compound of claim 5 , wherein the amount of masterbatch is between about 10% to about 70% of the weight percent of the polyester compound.8. The polyester compound of claim 5 , wherein the polyester of the masterbatch comprises polyethylene terephthalate (PET) claim 5 , Polycyclohexylenedimethylene terephthalate (PCT) claim 5 , polyethylene naphthalate (PEN) claim 5 , polybutylene terephthalate (PBT) claim 5 , polyethylene terephthalate glycol-modified (PETG) claim 5 , polylactic acid (PLA) claim 5 , Poly(butylene adipate-co-terphthalate) (PBAT) claim 5 , polyhydroxyalkanoates (PHA) ...

POLYESTERS AND FIBERS MADE THEREFROM

Disclosed herein are polyesters and fibers made therefrom. The fiber comprises a polymer, poly(trimethylene furandicarboxylate) (PTF), and PTF based copolymers. 1. A fiber comprising a polymer , wherein the polymer comprises poly(alkylene furandicarboxylate) obtained by polymerization of reaction mixture comprising furan dicarboxylic acid and a Cto Caliphatic diol.2. The fiber of wherein the poly(alkylene furandicarboxylate) has a number average molecular weight (Mn) in the range of from about 10 claim 1 ,000 to about 40 claim 1 ,000.3. The fiber of wherein the fiber is oriented.4. The fiber of claim 1 , wherein the polymer has a crystallinity of 100 J/g or less claim 1 , as measured by differential scanning calorimetry.5. The fiber of claim 1 , wherein an aliphatic diol comprises a Cdiol and the resulting polymer is poly(trimethylene-furandicarboxylate).6. The fiber of claim 1 , wherein the polymer is a polymer blend comprising (1) poly(trimethylene-2 claim 1 ,5-furandicarboxylate) and (2) a second poly(alkylene-furandicarboxylate) claim 1 ,{'sub': 4', '12, 'wherein the poly(alkylene-furandicarboxylate) is derived from furan dicarboxylic acid or its functional equivalent and an aliphatic diol selected from the group consisting of ethylene glycol, and C, to C, diols, and wherein the blend comprises 0.1 to about 99.9% by weight of poly(alkylene-furandicarboxylate) based on the total weight of the blend.'}7. The fiber of claim 1 , wherein the polymer is a polymer blend comprising (1) poly(trimethylene-2 claim 1 ,5-furandicarboxylate) and (2) a second poly(alkylene terephthalate) that is derived from terephthalic acid or its functional equivalent and a Cto Caliphatic diol claim 1 , and wherein the blend comprises 0.1 to about 99.9% by weight of poly(alkylene terephthalate) based on the total weight of the blend.8. The fiber of claim 1 , wherein the polymer is a copolymer and the furan dicarboxylic acid is 2 claim 1 ,5-furan dicarboxylic acid claim 1 , and wherein the ...

PROCESS FOR THE PREPARATION OF A FIBER, A FIBER AND A YARN MADE FROM SUCH A FIBER

A fiber comprising polyethylene-2,5-furan-dicarboxylate, is prepared by melt spinning in a process wherein a molten composition comprising polyethylene-2,5-furan-dicarboxylate having an intrinsic viscosity of at least 0.55 dl/g, determined in dichloroacetic acid at 25° C., is passed through one or more spinning openings to yield molten threads; wherein the molten threads are cooled to below the melting temperature of the composition to yield spun fibers; and wherein the spun fibers are drawn to a linear density in the range of 0.05 to 2.0 tex per fiber. The invention also proves a fiber comprising polyethylene-2,5-furan-dicarboxylate having a linear density of 0.05 to 2.0 tex, wherein the polyethylene-2,5-furan-dicarboxylate has an intrinsic viscosity of at least 0.45 dl/g, determined in dichloroacetic acid at 25° C. 1. Process for the preparation of a fiber comprising polyethylene-2 ,5-furan-dicarboxylate , by melt spinning , wherein a molten composition comprising polyethylene-2 ,5-furan-dicarboxylate having an intrinsic viscosity of at least 0.55 dl/g , determined in dichloroacetic acid at 25° C. , is passed through one or more spinning openings to yield molten threads;wherein the molten threads are cooled to below the melting temperature of the composition to yield spun fibers; andwherein the spun fibers are drawn to a linear density in the range of 0.05 to 2.0 tex per fiber.2. Process according to claim 1 , wherein the molten composition comprises from 75 to 100% wt polyethylene-2 claim 1 ,5-furan-dicarboxylate claim 1 , based on the weight of the molten composition.3. Process according to claim 1 , wherein the molten composition further comprises at least one polymer different from polyethylene-2 claim 1 ,5-furan-dicarboxylate.4. Process according to claim 3 , wherein the at least one polymer different from polyethylene-2 claim 3 ,5-furan-dicarboxylate has been selected from polyolefins claim 3 , polyamides claim 3 , polyesters and combinations thereof.5. ...

Normal pressure dyeable polyester fiber and method for producing the same

Disclosed is a fiber made of a polyester resin, wherein the polyester resin is a copolymer including a dicarboxylic acid component and a glycol component; of the dicarboxylic acid component, 80 mol % or more is accounted for by a terephthalic acid component, 4.0 to 12.0 mol % is accounted for by a cyclohexane dicarboxylic acid component, and 2.0 to 8.0 mol % is accounted for by an adipic acid component; and the glycol component contains an ethylene glycol component as a main component thereof. A polyester fiber is thereby provided which can be dyed with excellent deep color property and fastness property in dyeing under a normal pressure environment and which can offer stable quality and processing performance also by a direct spinning stretching method or other general melt-spinning methods. 16-. (canceled)7. A method for producing a fiber comprising a polyester resin , wherein the polyester resin is a copolymer comprising:a dicarboxylic acid component comprising 80 mol % or more of a terephthalic acid component, 4.0 to 12.0 mol % of a cyclohexane dicarboxylic acid component, and 3.0 to 8.0 mol % of an adipic acid component; and a glycol component comprising, as a main component, an ethylene glycol component, '(a) glass transition temperature (Tg): 61° C.≦Tg≦72° C. said method comprising, in the following order:', 'wherein the polyester resin has a glass transition temperature (Tg) satisfying (a)(1) melt-spinning a polyester resin through a spinneret, to obtain a melt-spun thread;(2) cooling the melt-spun thread to a glass transition temperature of the melt-spun thread or lower, thereby obtaining a cooled thread;(3) running the cooled thread within a tube heating apparatus, thereby obtaining a heat-stretched thread,(4) contacting the heat-stretched thread with an oil, to obtain an oiled thread; and(5) winding the oiled thread at a rate of 3500 to 5500 m/minute.8. The method of claim 7 , wherein the polyester resin has a glass transition temperature (Tg) and a ...

FABRICS AND SPUN YARNS COMPRISING POLYESTER STAPLE FIBER

Disclosed herein are spun yarns comprising melt spun staple fiber comprising a first polymer and a second polymer, wherein the first polymer comprises poly(trimethylene terephthalate) or poly(butylene terephthalate) and the second polymer comprises poly(ethylene terephthalate) or Co-PET, wherein Co-PET is a poly(ethylene terephthalate) copolymer comprising isophthalic acid monomer; and wherein the first polymer comprises poly(trimethylene terephthalate) and the weight ratio of the poly(trimethylene terephthalate) to the second polymer is in the range of from about 80:20 to about 10:90; or the the first polymer comprises poly(butylene terephthalate) and the weight ratio of the poly(butylene terephthalate) to the second polymer is in the range of about 90:10 to about 10:90. The spun yarn may further comprise a second staple fiber such as cotton or wool. The spun yarn is useful in preparing fabrics having advantageous properties. 1. A spun yarn comprising:melt spun staple fiber comprising a first polymer comprising poly(trimethylene terephthalate) or poly(butylene terephthalate) and a second polymer comprising poly(ethylene terephthalate) or Co-PET, wherein Co-PET is a poly(ethylene terephthalate) copolymer comprising isophthalic acid monomer; andwhereinthe first polymer comprises poly(trimethylene terephthalate) and the weight ratio of the poly(trimethylene terephthalate) to the second polymer is in the range of from about 80:20 to about 10:90; orthe first polymer comprises poly(butylene terephthalate) and the weight ratio of the poly(butylene terephthalate) to the second polymer is in the range of from about 90:10 to about 10:90.2. The spun yarn of claim 1 , wherein the first polymer comprises poly(trimethylene terephthalate) and the second polymer comprises poly(ethylene terephthalate).3. The spun yarn of claim 1 , wherein the first polymer comprises poly(trimethylene terephthalate) and the second polymer comprises Co-PET claim 1 , and the Co-PET contains from about ...

Copolyester Material with Low Melting Point, Spinning and Weaving Functions and Method for Forming the Copolyester Material

A method for forming a copolyester material includes preparing a solution of monomers, applying a polymerization to form a copolyester having a low melting point, spinning the copolyester into fiber threads to form a copolyester fiber, weaving or knitting the copolyester fiber with a common fiber to form a composite cloth having a sheet shape, cutting the composite cloth to form a determined shape, applying a hot-press process on the composite cloth under a temperature of about 120° C. to 200° C., to release tackiness of the copolyester, so that the copolyester fiber and the common fiber are bonded tightly and closely, and forming a tough film on a surface of the composite cloth by the copolyester, so that the composite cloth has functions of stiffness and abrasion resistance by the tough film. 1. A method for forming a copolyester material , comprising:preparing a solution of monomers;applying a polymerization on the solution of monomers to form a copolyester having a low melting point;spinning the copolyester into fiber threads to form a copolyester fiber;weaving or knitting the copolyester fiber of the copolyester with a fiber into cloth, to form a composite cloth having a sheet shape;cutting the composite cloth to form a determined shape;applying a hot-press process on the composite cloth under a temperature of about 120° C. to 200° C., to release tackiness of the copolyester, such that the copolyester fiber and the fiber are bonded tightly and closely; andthe tackiness released from the copolyester during the hot-press process forming a film on a surface of the composite cloth by the copolyester in the composite cloth, such that the composite cloth has stiffness and abrasion resistance by presence of the film;wherein:the copolyester has an intrinsic viscosity after the polymerization, and the copolyester is spun into the fiber threads and forms the copolyester fiber by the intrinsic viscosity;the tackiness released from the copolyester during the hot-press ...

COMPOSITIONS AND METHODS FOR THE INTRODUCTION OF ELASTOMERIC REINFORCEMENT FIBERS IN ASPHALT CEMENT CONCRETE

The present invention relates to elastomeric polymer fiber reinforced asphalt cement concrete for use in a variety of applications. In particular, the reinforcement fibers are effective to reduce or preclude voids and/or cracks formed in the asphalt upon placement and to render a self-healing property to the placed asphalt. 1. A fiber-reinforced asphalt composition , comprising:asphalt; anda plurality of reinforcement fibers composed of elastomeric polymer, and absent of material selected from the group consisting of ground rubber tire, tire aggregate and tire particulate.2. The asphalt composition of claim 1 , wherein the elastomeric polymer comprises synthetic polymer containing polyurethane.3. The asphalt composition of claim 2 , wherein the elastomeric polymer comprises spandex.4. The asphalt composition of claim 1 , wherein the plurality of reinforcement fibers has an aspect ratio from about 20 to about 5000 claim 1 , a denier from about 20 to about 1500 claim 1 , and a length from about 1/16-inch to about 3 inches.5. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of natural polyisoprene and synthetic polyisoprene.6. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of polybutadiene claim 1 , chloroprene rubber claim 1 , polychloroprene rubber claim 1 , butyl rubber claim 1 , styrene-butadiene rubber claim 1 , nitrile rubber and mixtures thereof.7. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of ethylene propylene rubber claim 1 , ethylene propylene diene rubber claim 1 , epichlorohydrin rubber claim 1 , polyacrylic rubber claim 1 , silicone rubber claim 1 , fluorosilicon rubber claim 1 , fluoroelastomers claim 1 , perfluoroelastomers claim 1 , polyether block amides claim 1 , chlorosulfonated polyethylene claim 1 , ethylene-vinyl acetate and mixtures thereof.8. The asphalt composition ...

MONOFILAMENT, SPIRAL FABRIC AND METHOD OF FORMING A SPIRAL FABRIC

A monofilament is particularly suited for use as a component in a spiral fabric. The monofilament is formed from a resin composition including a thermoplastic polymer. The thermoplastic polymer has an average molecular weight of less than 14200 g/mol. Alternatively, the monofilament is formed from a resin composition including a thermoplastic polymer, the thermoplastic polymer having a free thermal shrinkage of less than 1%. According to yet another embodiment, the monofilament is formed from a resin composition including a thermoplastic polymer, the thermoplastic polymer having an intrinsic viscosity of less than 0.72 dl/g. Yet alternatively, the monofilament is formed from a resin composition including a thermoplastic polymer, the thermoplastic polymer having a melt viscosity of less than 3000 P. 1. A monofilament , comprising a resin composition formed into a monofilament , said resin composition including a thermoplastic polymer , the thermoplastic polymer having a number average molecular weight of less than 14200 g/mol.2. The monofilament according to claim 1 , wherein said thermoplastic polymer has a number average molecular weight ranging from 5000 g/mol to 11000 g/mol.3. The monofilament according to claim 1 , wherein the monofilament has a free thermal shrinkage of less than 1% claim 1 , wherein the free thermal shrinkage is determined as a percentage of a change in a length of the monofilament after a heat treatment of the monofilament in an oven at 177° C. for 5 min compared to the length of the monofilament before the heat treatment.4. The monofilament according to claim 3 , wherein the free thermal shrinkage is less than 0.5%.5. The monofilament according to claim 3 , wherein the free thermal shrinkage is less than 0.35%.6. The monofilament according to claim 1 , wherein said thermoplastic polymer is a polymer selected from the group consisting of polyethylene terephthalate claim 1 , polyphenylene sulfide claim 1 , polyamide claim 1 , and polyolefin.7. ...

AMORPHOUS HEAT-FUSIBLE FIBER, FIBER STRUCTURE, AND HEAT-RESISTANT MOLDED ARTICLE

Provided are a heat-fusible fiber having excellent heat resistance, flame retardancy and dimensional stability; a fiber structure comprising the heat-fusible fiber; and a molded article produced by applying a heat fusion treatment to the fiber structure and having excellent heat resistance. The heat-fusible fiber comprises an amorphous PES type polymer (A) not substantially having a melting point and an amorphous PEI type polymer (B) in the mixture ratio (weight) of (A)/(B)=5/95 to 95/5, the fiber having a single glass transition temperature in the range between 80° C. and 200° C., and being amorphous. The fiber structure comprises 10% by weight or higher of the amorphous heat-fusible fiber. The molded article comprises at least a fiber structure comprising 10% by weight or higher of the amorphous heat-fusible fiber, to be fusion-bonded at a temperature higher than the glass transition temperature of the amorphous heat-fusible fiber. 17-. (canceled)8. A method for producing an article , the method comprising:heating a fiber structure which comprises an amorphous heat-fusible fiber and a constituent fiber other than the amorphous heat-fusible fiber, at a temperature of a higher or equal to a glass transition temperature of the amorphous heat-fusible fiber, at which the amorphous heat-fusible fiber softens and flows such that the constituent fiber is fusion-bonded with the amorphous heat-fusible fiber, (A) an amorphous polyester; and', '(B) an amorphous polyetherimide, a weight ratio of (A)/(B) is 5/95 to 95/5, and, 'wherein the amorphous heat-fusible fiber compriseswherein the amorphous heat-fusible fiber has a single glass transition temperature in a range between 80° C. and 200° C.9. The method of claim 8 , wherein the amorphous polyester (A) comprises a terephthalic acid unit (D) and an isophthalic acid unit (E) claim 8 , and a copolymerization ratio (mole % ratio) of (D)/(E) ranges from 70/30 to 40/60.10. The method of claim 8 , wherein the constituent fiber ...

INTRINSIC FLUORESCENT GREEN FIBER AND MANUFACTURING METHOD THEREOF

An intrinsic fluorescent green fiber includes 98.00 to 99.00 parts by weight of a carrier, 0.10 to 0.20 parts by weight of a yellow colorant, 0.08 to 0.20 parts by weight of a blue colorant, and 1.00 to 1.50 parts by weight of a titanium dioxide. When a content of 0.10 wt % to 0.20 wt % of the yellow colorant and a balance of the carrier are mixed to form a yellow fiber, the L*, a*, and b* values of the yellow fiber are respectively between 101.27 and 101.72, between −17.61 and −13.47, and between 89.84 and 108.79. When a content of 0.08 wt % to 0.20 wt % of the blue colorant and a balance of the carrier are mixed to form a blue fiber, the L*, a*, and b* values of the blue fiber are respectively between 55.60 and 66.80, between −22.69 and −22.70, and between −37.50 and −31.80. 1. An intrinsic fluorescent green fiber , comprising:98.00 parts by weight to 99.00 parts by weight of a carrier, wherein the carrier comprises polyethylene terephthalate;0.10 parts by weight to 0.20 parts by weight of a yellow colorant, wherein when a content of 0.10 wt % to 0.20 wt % of the yellow colorant and a balance of the carrier are mixed together to form a yellow fiber, a L* value, an a* value; and a b* value of the yellow fiber in a L*a*b* color space are respectively between 101.27 and 101.72, between −17.61 and −13.47, and between 89.84 and 108.79;0.08 parts by weight to 0.20 parts by weight of a blue colorant, wherein when a content of 0.08 wt % to 0.20 wt % of the blue colorant and a balance of the carrier are mixed together to form a blue fiber, a L* value, an a* value, and a b* value of the blue fiber in the L*a*b* color space are respectively between 55.60 and 66.80, between −22.69 and −22.70, and between −37.50 and −31.80; and1.00 part by weight to 1.50 parts by weight of a titanium dioxide.2. The intrinsic fluorescent green fiber of claim 1 , wherein the yellow colorant is a fluorescent yellow dye claim 1 , and the blue colorant is a fluorescent blue pigment.3. The intrinsic ...

Polyhydroxyalkanoate Medical Textiles and Fibers

Absorbable polyester fibers, braids, and surgical meshes with prolonged strength retention have been developed. These devices are preferably derived from biocompatible copolymers or nomopolymers of 4-hydroxybutyrate. These devices provide a wider range of in vivo strength retention properties than are currently available, and could offer additional benefits such as anti-adhesion properties, reduced risks of infection or other post-operative problems resulting from absorption and eventual elimination of the device, and competitive cost. The devices may also be particularly suitable for use in pediatric populations where their absorption should not hinder growth, and provide in all patient populations wound healing with long-term mechanical stability. The devices may additionally he combined with autologous, allogenic and/or xenogenic tissues to provide implants with improved mechanical, biological and handling properties.

THERMALLY AND DIMENSIONALLY STABILIZED ELECTROSPUN COMPOSITIONS AND METHODS OF MAKING SAME

Thermally stable absorbable fiber populations, i.e. fiber populations that do not undergo thermally induced crystallization, can be intermixed with thermally unstable fibers to yield a stabilizing effect without altering morphological properties of a fiber system. Via this, one may minimize thermally induced shrinkage and maintain physical properties of electrospun materials in the as-formed state. 1. A thermally stable electrospun material comprising;at least two independent fiber populations;a major fiber component comprising at least one thermally unstable species;a minor fiber component comprising at least one thermally stable species; andwherein the major and minor fiber components are co-mingled and distributed throughout the electrospun material; andwherein the material exhibits limited macroscopic changes in physical and mechanical properties when exposed to thermal or mechanical stress.2. The thermally stable electrospun material of claim 1 , wherein the thermally stable species comprises a bioabsorbable polyether-ester.3. The thermally stable electrospun material of claim 2 , wherein the bioabsorbable polyether-ester comprises poly(para-dioxanone).4. The thermally stable electrospun material of claim 1 , wherein the thermally stable species comprises at least 30 percent of the thermally stable electrospun material.5. The thermally stable electrospun material of claim 1 , wherein the thermally unstable species comprises a bioabsorbable polyester.6. The thermally stable electrospun material of claim 5 , wherein the bioabsorbable polyester is a copolymer derived from cyclic monomers selected from the group consisting of glycolide claim 5 , L-lactide claim 5 , ε-caprolactone claim 5 , para-dioxanone claim 5 , trimethylene carbonate or mixtures thereof.7. The thermally stable electrospun material of claim 6 , wherein the bioabsorbable polyester is a copolymer of glycolide and L-lactide.8. The thermally stable electrospun material of claim 7 , wherein the ...

Copolyesterimides comprising bis(2-hydroxyalkyl)-2,2'-(1,4-phenylene)bis(1,3-dioxoisoindoline-5-carboxylate) and articles made therefrom

A copolyester comprising repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (Formula (I)) wherein n=2, 3 or 4, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester; and a film, fibre or moulding composition or moulded article comprising said copolyester.

Method for Preparing Untwisted, Hollow, High-Count Textiles and Method for Recovering the Solute in an Alkaline Lysis Solution

The present invention discloses a method for preparing untwisted, hollow, high-count textiles comprising the following steps: a. preparing an alkaline degradable slice; b. preparing a blended spun melt; c. preparing an easily alkaline soluble and degradable fiber by spinning; d. preparing the textiles or an embroidered article. A method for recovering the solute in an alkaline lysis solution comprises an alkaline lysis solution obtained after the degradation of the easily alkaline soluble and degradable fiber is subjected to an acid precipitation, so as to produce terephthalic acid, wherein the waste water obtained by filtering meets the emission standard and is introduced to a biochemistry processing system.

LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF

Provided is a liquid crystal polyester fiber having high strength, high elastic modulus, high abrasion resistance, excellent processability, and little thermal deformation at high temperature, and also provided is a production method thereof. A liquid crystal polyester fiber, characterized in that the peak half-value width of the endothermic peak (Tm1) observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min is 15° C. or higher, the polystyrene-converted weight-average molecular weight is between 250,000 and 2,000,000 inclusive, the peak temperature of the loss tangent (tan δ) is between 100° C. and 200° C. inclusive, and the peak value of the loss tangent (tan δ) is between 0.060 and 0.090 inclusive. A mesh fabric comprising the liquid crystal polyester fiber. A production method for melt liquid crystal polyester fiber, characterized in that liquid crystal polyester fiber obtained by melt-spinning is subject to solid-phase polymerization, and subsequently heat treated at a stretch ratio of at least 0.1% and under 3.0% at a temperature at least 50° C. higher than the endothermic peak temperature (Tm1) as observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min. 1. A method of producing a melt-spun liquid crystal polyester fiber , said method comprising:melt spinning a liquid crystal polyester fiber thereby polymerizing said fiber in a solid phase; andheat stretching the polymer at a temperature of an endothermic peak (Tm1)+50° C. or more and at a stretch rate of 0.1% or more and less than 3.0%, wherein the endothermic peak is observed by a differential calorimetry under a temperature elevation condition of 20° C./min from 50° C.;wherein melt-spun liquid crystal polyester has: a peak half-value width of 15° C. or more at an endothermic peak (Tm1) observed by a differential calorimetry under a temperature elevation ...

THE POROUS ULTRA-SOFT ULTRA-FINE DENIER POLYESTER FIBER AND ITS PREPARATION METHOD

A porous ultra-soft ultra-fine denier polyester fiber and preparation method. The modified polyester is spun with a porous spinneret to produce the porous ultra-soft ultra-fine denier polyester fiber, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The porous ultra-soft ultra-fine denier polyester fiber is obtained by metering, extruding, cooling, oiling and high-speed winding the modified polyester chips. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The deviation rate of fiber density is ≤0.5%, the CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of yarn unevenness is ≤2.0%. 1. A porous ultra-soft ultra-fine denier polyester fiber , comprising a modified polyester , and the modified polyester is composed of a terephthalic acid chain , an ethylene glycol chain and a. diol chain containing a branched chain;a size of the porous ultra-soft ultra-fine denier polyester fiber is 0.20-0.50 dtex; an initial modulus is ≤65 cN/dtex; a breaking strength is ≥3.8 cN/dtex; an elongation at break is 35.0±3.0%;at a temperature of 80° C.-130° C., a space gap between molecular chains in the modified polyester increases by 10-30v/v %;at a temperature of 260-290° C., a melt viscosity decreases by 10-20%;a deviation rate of fiber density of the porous ultra-soft ultra-fine denier polyester fiber is ≤0.5%;a CV value of breaking strength is ≤4.0%. and a CV value of elongation at break is ≤8.0%, and a CV value of coiling shrinkage coefficient of variation is ≤8.0%, and a CV value of yarn unevenness is ≤2.0%;wherein, the increase of the space gap between the molecular chains refers to a comparison of the spatial gaps between ...

3d printing heat resistant support material

A filament for use in forming a support structure in fused filament fabrication, the filament comprising an amorphous, thermoplastic resin further comprising Bisphenol Isophorone carbonate units and Bisphenol A carbonate units, wherein the Bisphenol Isophorone carbonate units are 30 to 50 mole percent of the total of Bisphenol A carbonate units and Bisphenol Isophorone carbonate units in the resin, and wherein the resin has a glass transition temperature from 165° C. to 200° C. The composition used to form the support filament exhibits a desirable combination of filament formability, printability, lack of significant oozing from the printer nozzle, and good ease of mechanical separation from the build material at room temperature after printing.

Thermally And Dimensionally Stabilized Electrospun Compositions and Methods of Making Same

Thermally stable absorbable fiber populations, i.e. fiber populations that do not undergo thermally induced crystallization, can be intermixed with thermally unstable fibers to yield a stabilizing effect without altering morphological properties of a fiber system. Via this, one may minimize thermally induced shrinkage and maintain physical properties of electrospun materials in the as-formed state. 1. A thermally stable electrospun material comprising;at least two independent fiber populations;a major fiber component comprising at least one thermally unstable species;a minor fiber component comprising at least one thermally stable species; andwherein the major and minor fiber components are co-mingled and distributed throughout the electrospun material; andwherein the material exhibits limited macroscopic changes in physical and mechanical properties when exposed to thermal or mechanical stress.2. The thermally stable electrospun material of claim 1 , wherein the thermally stable species comprises a bioabsorbable polyether-ester.3. The thermally stable electrospun material of claim 2 , wherein the bioabsorbable polyether-ester comprises poly(para-dioxanone).4. The thermally stable electrospun material of claim 1 , wherein the thermally stable species comprises at least 30 percent of the thermally stable electrospun material.5. The thermally stable electrospun material of claim 1 , wherein the thermally unstable species comprises a bioabsorbable polyester.6. The thermally stable electrospun material of claim 5 , wherein the bioabsorbable polyester is a copolymer derived from cyclic monomers selected from the group consisting of glycolide claim 5 , L-lactide claim 5 , ε-caprolactone claim 5 , para-dioxanone claim 5 , trimethylene carbonate or mixtures thereof.7. The thermally stable electrospun material of claim 6 , wherein the bioabsorbable polyester is a copolymer of glycolide and L-lactide.8. The thermally stable electrospun material of claim 7 , wherein the ...

One-step spun composite dty and preparation method thereof

A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R 1 and R 2 are separately selected from the linear alkylene with 1-3 carbon atoms, R 3 from the alkyl with 1-5 carbon atoms, and R 4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.

A flame-retardant polyester fiber and its preparation method

A flame-retardant polyester fiber obtained by spinning flame-retardant polyester and irradiating with ultraviolet light and having a limiting oxygen index value of greater than 30. Flame retardant 2-carboxyethylphenylphosphinic acid to improve the flame retardant properties of polyester, the use of polyester containing unsaturated double bond in UV irradiation, the double bond opens to form a crosslinking point, the formation of a certain amount of the network structure improves the heat-resistant temperature of the poly-fiber and improves the anti-dripping performance of the polyester fiber. 1. A flame-retardant polyester fiber according to the present invention , comprising a polyester fiber obtained by spinning flame retardant polyester and undertaking UV irradiation , wherein a flame-retardant polyester fiber maximum oxygen index value is greater than 30 , wherein the flame-retardant polyester is obtained after an esterification react of terephthalic acid , unsaturated dibasic acid and ethylene glycol; and adding flame retardant 2-carboxyethyl phenyl phosphoric acid ethylene glycol ester , a mixture of magnesium glycol and antimony ethylene glycol and pelletized polyester chips;wherein, in the pelletized polyester chips, the macromolecular chains of the flame retardant polyester contain an average of 1 to 6 unsaturated double bonds provided by the unsaturated dibasic acid molecules;{'sub': 2', '2', '2, 'wherein the formula of magnesium ethylene glycol is Mg(OCHCHOH).'}2. The flame retardant polyester fiber according to claim 1 , wherein the flame retardant polyester fiber has a linear density deviation rate of ≤0.5% claim 1 , a breaking strength of ≥3.5 cN/dtex claim 1 , a CV value of breaking strength of ≤5.0% claim 1 , a breaking extension of 33.0±3.0% claim 1 , a CV value of breaking extension of ≤10.0% claim 1 , a CV value of unevenness of strip of ≤2.00% claim 1 , a boiling Water shrinkage of 7.5÷0.5% and an oil content of 0.90÷0.20%.3. The flame-retardant ...

WAVELENGTH-SHIFT COMPOSITE LIGHT-STORING POWDER AND METHOD OF MANUFACTURING AND APPLYING THE SAME

A wavelength-shift composite light-storing powder and method of manufacturing and applying the same. Wherein, inorganic metal oxide and light-storing material containing rare earth elements are made to collide at high speed in an environment of extremely low temperature. The collision process makes said inorganic metal oxide to produce fusion reaction on surface of said light-storing material, that causes changes of lattice structure, to generate photon shift phenomenon and produce said wavelength-shift composite light-storing powder. Said composite light-storing powder is apt to engage cross-linked structure of thermoplastic polymer in a high temperature blending process, to achieve even distribution. Finally, through a filament process to produce successfully light-storing fibers capable of emitting lights of various wavelengths, to raise its heat resistance and wash durability. 1. A method of manufacturing a light-storing fiber , comprising following steps: a light-storing material containing rare earth elements; and', 'an inorganic metal oxide forming and fusing on a surface of said light-storing material containing rare earth elements under a high speed gas flow and an environment with extremely low temperature −100 to −196° C.;, 'mixing a plurality of wavelength-shift composite light-storing powders of 1 to 30 wt %, a thermoplastic polymer of 50 to 95 wt %, a ring structure agent having a dipropylene or a tripropylene functional group of 0.05 to 5 wt %, a cross linkage agent of 0.01 to 5 wt %, and a dispersing agent of 0.01 to 5 wt % to form a mixed powder, wherein said plurality of wavelength-shift composite light-storing powders comprisesblending said mixed powder to make said thermoplastic polymer to be melted, and said melted thermoplastic polymer is cross-linked through using said cross linkage agent, such that said wavelength-shift composite light-storing powders are dispersed in said cross-linked thermoplastic polymer;baking and drying said cross-linked ...

MODIFIED POLYESTER FIBER, ETCHING FINISHED WOVEN AND KNITTED FABRIC CONTAINING THE FIBER, AND METHOD FOR PRODUCING SAME

As a fiber for weight reduction, a modified polyester fiber, which is obtained by copolymerizing: ethylene terephthalate as a main constitutional unit; equal to or more than 16 mol % and equal to or less than 25 mol % of an aliphatic dicarboxylic acid having equal to or more than 4 and equal to or less than 8 carbon atoms; and equal to or more than 2 mol % and equal to or less than 5 mol % of a metal sulfonate group-containing aromatic dicarboxylic acid, is used. This modified polyester fiber has a single fiber fineness of equal to or more than 0.6 dtex and equal to or less than 3.5 dtex. A mixed woven or knitted fabric composed of two or more types of fibers, which are the modified polyester fiber, a regular polyester fiber, and optionally, a polyurethane fiber, is capable of exhibiting good etching finish properties by using an etching finish agent that contains an etching finish accelerator, for example, a Mei printer OP-2 (manufactured by Meisei Chemical Works, Ltd.) and sodium carbonate, and also exhibits low reduction in strength of non-etching finished parts. 1: A modified polyester fiber ,wherein the modified polyester fiber has a weight reduction ratio of equal to or more than 5% and equal to or less than 15%,the weight reduction ratio is measured by:adding 100 g of a fiber to 2 L of an aqueous solution including 40 g/L of sodium carbonate; heating an obtained mixture at 100° C. for 30 minutes; performing drying treatment at 80° C. for 60 minutes; and measuring a fiber mass A g, and {'br': None, 'i': 'A', 'weight reduction ratio (%)=((100−)/100)×100.'}, 'the weight reduction ratio is expressed by2: The modified polyester fiber according to claim 1 , comprising:a modified polyester,wherein the modified polyester comprises, in a copolymerized form:ethylene terephthalate;equal to or more than 16 mol % and equal to or less than 25 mol % of an aliphatic dicarboxylic acid having 4 to 8 carbon atoms; andequal to or more than 2 mol % and equal to or less than 5 mol ...

THE HIGH-UNIFORMITY COLOURED POLYESTER INDUSTRIAL YARN

A high uniformity coloured polyester industrial yarn and preparation method. The raw material of the high-uniformity coloured polyester industrial yarn is the modified polyester composed of terephthalic acid segment, an ethylene glycol segment and a branched diol. The high-uniformity coloured polyester industrial yarn is prepared by esterification reaction of terephthalic acid with a branched diol using concentrated sulfuric acid as catalyst to obtain terephthalic acid glycol ester. Terephthalic acid and ethylene glycol are formulated to carry out esterification reaction to obtain ethylene terephthalate. Finally, stir and mix the two materials and carry out the polycondensation reaction in the low vacuum stage and the high vacuum stage under the action of the catalyst and the stabilizer to obtain modified polyester. Measure the modified polyester and add black masterbatch. After porous spinneret extrusion, cooling, oiling, drawing, heat setting and winding the modified polyester, high uniformity coloured polyester industry yarn is obtained. 1. A high-uniformity coloured polyester industrial yarn , whereinthe high-uniformity coloured polyester industrial yarn is a polyester industrial yarn added with a black masterbatch,the high-uniformity coloured polyester industrial yarn is obtained by spinning after carrying out a solid phase polycondensation,the high uniformity coloured polyester industrial yarn comprises a modified polyester, wherein the modified polyester is composed of a terephthalic acid segment, an ethylene glycol segment and a branched diol segment, the branched diol segment is a diol having a branched chain, the branched chain is a non-terminal carbon in the ethylene glycol segment and the branched chain has a linear carbon chain containing 5 to 10 carbon atoms,the high-uniformity coloured polyester industrial yarn has a breaking strength ≥7.0 cN/dtex, a linear density deviation rate ≤1.0%, and a breaking strength CV value ≤2.0%;a CV value of elongation ...

MEDICAL MATERIAL FOR LONG-TERM IN VIVO IMPLANTATION USE WHICH IS MADE FROM ULTRAFINE FIBER

A medical material for in vivo implantation use, characterized in that a polyethylene terephthalate ultrafine fiber is provided in at least a part of the medical material, wherein the polyethylene terephthalate ultrafine fiber is produced by spinning a polyethylene terephthalate chip, which is produced using germanium or titanium oxide as a catalyst, by a direct spinning method and then stretching the spun product and has a single fiber fineness of 0.8 dtex or less. 1. A medical material for in vivo implantation comprising a polyethylene terephthalate ultrafine fiber having single fiber thickness of 0.8 dtex or less which is manufactured using a polyethylene terephthalate polymer chip by direct spinning method , wherein said polyethylene terephthalate polymer chip is manufactured using germanium or titanium as a catalyst.2. The medical material for in vivo implantation of claim 1 , wherein the ultrafine fiber has tensile strength of 4.0 cN/dtex or more.3. The medical material for in vivo implantation of claim 1 , wherein the bundle of ultrafine fibers is treated by false twisting process and the bundle has one or more micro-crimps per mm on average.4. The medical material for in vivo implantation of claim 1 , wherein the medical material for in vivo implantation is at least one of those selected from the group consisting of artificial vascular grafts claim 1 , patch material claim 1 , artificial heart valves claim 1 , stent grafts claim 1 , artificial pericardium claim 1 , suture threads claim 1 , tissue covering materials claim 1 , tissue reinforcing materials claim 1 , tissue coating materials claim 1 , tissue recovering base materials claim 1 , tissue repairing materials claim 1 , anti-adhesive materials claim 1 , clips claim 1 , fabrics or hemostatic materials. The present invention relates to a medical material made of polyethylene terephthalate ultrafine fibers which do not cause foreign body reaction or calcification, has good pliability and easy handling ...

Methods and compositions for cooling yarns and fabrics comprising a cellulosic fiber, and articles comprising same

In one aspect, the disclosure relates to composite fibers having a structure comprising a core component and sheath component, wherein each of the core component and the sheath component independently comprise a polymer and a disclosed cooling composition. In various further aspects, the present disclosure pertains to single-covered yarn comprising a core yarn comprising a disclosed composite fiber comprising a core component and a sheath component, and a first fiber comprising a cellulosic fiber, such that the first fiber is wrapped or surrounds the core fiber. In still further aspects, the present disclosure pertains to a fabric, e.g., a woven or knit fabric, comprising a disclosed single-covered yarn. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Photopolymerizable compositions for solventless fiber spinning

Disclosed are methods of fiber spinning and polymer fibers that utilize multifunctional thiol and enes compounds. Also, the subject matter disclosed herein relates to uses of polymer fibers and articles prepared from such fibers.

POLYESTER FIBER

An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). 1. A polyester fiber obtained by spinning a polyester resin comprising poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a spinning velocity of from 1 ,500 to 7 ,000 m/min ,{'sub': β', 'α', 'α', 'β', 'α', 'β', 'α', 'β, 'wherein the polyester fiber has a ratio I/Iof not less than 0.02, where Idenotes a diffraction intensity from α-crystals, Idenotes a diffraction intensity from β-crystals, and an influence on Iand Icaused by an amorphous phase in the polyester fiber is removed when measuring Iand I.'}2. The polyester fiber according to claim 1 , wherein the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) comprises 3-hydroxybutyrate as a monomer in an amount of from 99.5 to 88.5 mol %.3. The polyester fiber according to claim 1 , wherein the spinning of the polyester resin comprises extruding the polyester resin from a spinning die at a resin temperature of from 145 to 190° C.4. The polyester fiber according to claim 1 , wherein the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) has a weight-average molecular weight of from 150 claim 1 ,000 to 1 claim 1 ,500 claim 1 ,000.5. The polyester fiber according to claim 1 , wherein the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) has a weight-average molecular weight of from 200 claim 1 ,000 to 1 claim 1 ,000 claim 1 ,000.6. The polyester fiber according to claim 1 , wherein the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) comprises 3-hydroxybutyrate as a monomer in an amount of from 99 to 93 mol %.7. The polyester fiber according to claim 1 , wherein the polyester resin comprises not less than 70 wt% of the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate).8. The polyester fiber according to claim 1 , wherein the polyester resin further comprises at least one of a lubricant and a plasticizer.9. A method for producing a polyester fiber claim 1 , comprising ...

THERMALLY AND DIMENSIONALLY STABILIZED COMPOSITIONS AND METHODS OF MAKING SAME

Thermally stable absorbable fiber populations, i.e. fiber populations that do not undergo thermally induced crystallization, can be intermixed with thermally unstable fibers to yield a stabilizing effect without altering morphological properties of a fiber system. Via this, one may minimize thermally induced shrinkage and maintain physical properties of electrospun materials in the as-formed state. 121.-. (canceled)22. A thermally stable nonwoven barrier comprising:at least two independent fiber populations;a major fiber component of said barrier comprising at least one thermally unstable fiber population, wherein the fiber comprises polymers or copolymers that are degradable by hydrolysis or other biodegradation mechanisms; are derived from cyclic monomers selected from glycolide, lactide, caprolactone, para-dioxanone, trimethylene carbonate or mixtures thereof, or are a polyhydroxyalkanoate;a minor fiber component of said barrier comprising at least one thermally stable fiber population, wherein the fiber population may be absorbable or nonabsorbable, and comprises polymers or copolymers selected from polyesters, polyethers, polyether-ester or copolymers thereof, a block copolymer having one or more blocks of polydioxanone, copolymers of PDO, poly(E-caprolactone) or poly(L-lactic acid), poly(ethylene terephthalate), polyethylene, polypropylene, a nylon, polyurethanes, polypropylene, or PEEK;wherein the major and minor fiber components of said barrier are co-mingled in a fibrous web;wherein each fiber population is not a composite fiber wherein the individual fiber comprises nonstable and stabilizing elements; andwherein said barrier does not decrease in size more than 10% at temperatures of 30° C. to 60° C.23. The barrier of claim 22 , wherein the major fiber component comprises a fiber population that is absorbable and the minor fiber component comprises a fiber population that is absorbable.24. The barrier of claim 22 , wherein the major fiber component ...

Low-shrinkage polyester industrial yarn and preparation method thereof

A low-shrinkage polyester industrial yarn and a preparation method thereof are provided. The preparation method includes the following steps: subjecting the modified polyester to polycondensation, melting, measuring, extruding, cooling, oiling, stretching, heat setting and winding, wherein the content of the crown ether in the oil agent is 67.30-85.58 wt %. The material of the prepared low shrinkage polyester industrial yarn is a modified polyester, the molecular chain of the modified polyester includes a terephthalic acid segment, an ethylene glycol segment, and a branched diol segment, and the structural formula of the branched diol is as follows: Wherein R 1 and R 2 are each independently selected from a linear alkylene group having 1-3 carbon atoms, R 3 is selected from an alkyl group having 1-5 carbon atoms, and R 4 is selected from an alkyl group consisting of 2-5 carbon atoms.

COMPOSITIONS AND METHODS FOR THE INTRODUCTION OF ELASTOMERIC REINFORCEMENT FIBERS IN ASPHALT CEMENT CONCRETE

The present invention relates to elastomeric polymer fiber reinforced asphalt cement concrete for use in a variety of applications. In particular, the reinforcement fibers are effective to reduce or preclude voids and/or cracks formed in the asphalt upon placement and to render a self-healing property to the placed asphalt. 1. A reinforcement composition for asphalt , comprising:a plurality of reinforcement fibers comprised of elastomeric polymer.2. The composition of claim 1 , wherein the elastomeric polymer comprises synthetic polymer containing polyurethane.3. The composition of claim 2 , wherein the elastomeric polymer comprises spandex.4. The composition of claim 1 , wherein the elastomeric polymer has an aspect ratio from about 20 to about 5000 claim 1 , and each of the plurality of reinforcement fibers has a denier from about 20 to about 1500 and a length from about 1/16-inch to about 3 inches.5. The composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of natural polyisoprene and synthetic polyisoprene.6. The composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of polybutadiene claim 1 , chloroprene rubber claim 1 , polychloroprene rubber claim 1 , butyl rubber claim 1 , styrene-butadiene rubber claim 1 , nitrile rubber and mixtures thereof.7. The composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of ethylene propylene rubber claim 1 , ethylene propylene diene rubber claim 1 , epichlorohydrin rubber claim 1 , polyacrylic rubber claim 1 , silicone rubber claim 1 , fluorosilicon rubber claim 1 , fluoroelastomers claim 1 , perfluoroelastomers claim 1 , polyether block amides claim 1 , chlorosulfonated polyethylene claim 1 , ethylene-vinyl acetate and mixtures thereof.8. The composition of claim 1 , wherein the elastomeric polymer is a recycled material.9. The composition of claim 1 , wherein the reinforcement fibers are in the form of ...

Copolyester Material with Low Melting Point, Spinning and Weaving Functions and Method for Forming the Copolyester Material

A method for forming a copolyester material includes preparing a solution of monomers, applying a polymerization to form a copolyester having a low melting point, spinning the copolyester into fiber threads to form a copolyester fiber, weaving or knitting the copolyester fiber with a common fiber to form a composite fiber having a sheet shape, cutting the composite fiber to form a determined shape, applying a hot-press process on the composite fiber under a temperature of about 120° C. to 200° C., to release tackiness of the copolyester, so that the copolyester fiber and the common fiber are bonded tightly and closely, and forming a tough film on a surface of the composite fiber by the copolyester, so that the composite fiber has functions of stiffness and abrasion resistance by the tough film. 1. A method for forming a copolyester material , comprising:preparing a solution of monomers;applying a polymerization on the solution of monomers to form a polyester material or copolyester having a low melting point;spinning the copolyester into fiber threads to form a copolyester fiber;weaving or knitting the copolyester fiber of the copolyester with a common fiber into cloth, to form a composite fiber having a sheet shape;cutting the composite fiber to form a determined shape;applying a hot-press process on the composite fiber under a temperature of about 120° C. to 200° C., to release tackiness of the copolyester, so that the copolyester fiber and the common fiber are bonded tightly and closely; andforming a tough film on a surface of the composite fiber by a feature of the copolyester, so that the composite fiber has functions of stiffness and abrasion resistance by the tough film.2. The method of claim 1 , wherein the copolyester has a melting point of about 100° C. to 180° C.3. The method of claim 1 , wherein the solution of monomers includes diacid claim 1 , diol claim 1 , a catalyst and an additive agent which are mixed.4. The method of claim 1 , wherein the ...

RESORBABLE, AMINO ACID-BASED POLY(ESTER UREA)S SCAFFOLD FOR VASCULAR GRAFT TISSUE ENGINEERING

Embodiments relate to amino acid-based poly(ester urea)s with amino acid residues selected L-leucine, L-isoleucine, L-valine or combinations thereof. The amino acid-based poly(ester urea)S may optionally include a second amino acid residue selected from proteinogenic amino acids and non-proteinogenic amino acids. The amino acid-based poly(ester urea)s are particular useful for the preparation of vascular grafts. Due to the biocompatibility of the amino acid-based poly(ester urea)s, vascular grafts prepared from amino acid-based poly(ester urea)s with small internal diameters (i.e. less than 5 mm) may be prepared and inserted into a patient or animal, and provide a substantial decrease in the risk of failure compared to conventional polymers used in vascular grafts. 1. An amino acid-based poly(ester urea) comprisingan amino acid residue selected from L-leucine, L-isoleucine, L-valine or combinations thereof; anda hydrocarbylene group having from 10 to 12 carbon atoms;where the hydrocarbylene group is attached to the amino acid residue through an ester group.2. The amino acid-based poly(ester urea) of claim 1 , where the amino acid-based poly(ester urea) further includes a second amino acid residue selected from proteinogenic amino acids and non-proteinogenic amino acids.4. The amino acid-based poly(ester urea) of claim 3 , where the pendent functional group is an oxygen atom connected to a alkyl or aryl group containing an alkyne group claim 3 , an alkene group claim 3 , an azide group claim 3 , a benzyl protected phenol group claim 3 , a ketone group or a strained cyclooctyne.6. (canceled)13. An amino acid-based poly(ester urea) vascular graft comprising a tubular structure comprising an amino acid-based poly(ester urea) with amino acid residues selected from L-leucine claim 3 , L-isoleucine claim 3 , L-Valine or combinations thereof.16. The poly(ester urea) vascular graft of claim 13 , where the poly(ester urea) is electrospun.17. The poly(ester urea) vascular ...

COPOLYESTERIMIDES DERIVED FROM AROMATIC DICARBOXYLIC ACIDS AND ALIPHATIC GLYCOLS AND FILMS MADE THEREFROM

A film comprising a copolyester wherein said copolyester comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and a comonomer (M) selected from the group consisting of N,N′-bis-(2-hydroxyalkyl)-bicyclo-[2,2,2]-oct-7-ene-2,3,5,6-tetracarboxylic diimide (BODI) and 2-hydroxyalkyl-2-[p-(2-hydroxyethoxycarbonyl)phenyl]-1,3-dioxo-2H-isoindole-5-carboxylate (DOIC), wherein the number of carbon atoms is the 2-hydroxyalkyl group is 2, 3 or 4, and wherein comonomer (M) constitutes a proportion of the glycol fraction of the copolyester. 2. The film according to wherein comonomer (M) is selected from the monomer of formula (I).3. The film according to wherein comonomer (M) is selected from the monomer of formula (II).4. The film according to wherein the comonomer (M) is present in amounts of no more than 15 mol % of the glycol fraction of the copolyester.5. The film according to wherein the aliphatic glycol is selected from C claim 1 , Cor Caliphatic diols.6. The film according to wherein the aliphatic glycol is ethylene glycol.7. The film according to wherein the number of carbon atoms in the aliphatic glycol is the same as the number (n) in comonomer (M).8. The film according to wherein n=2.9. The film according to wherein the aromatic dicarboxylic acid is selected from naphthalene dicarboxylic acid and terephthalic acid.10. The film according to wherein the aromatic dicarboxylic acid is 2 claim 1 ,6-naphthalene dicarboxylic acid.12. The film according to wherein the aromatic dicarboxylic acid is terephthalic acid.14. The film according to which is an oriented film claim 1 , particularly a biaxially oriented film.15. The film according to wherein said aromatic dicarboxylic acid is naphthalene dicarboxylic acid and the degree of crystallinity of the film is at least about 10% as calculated from the film density and on the basis of the density of 0% crystalline polyethylene naphthalate (PEN) being 1.325 g/cmand the density of 100% ...

Cationic Dyeable Polyester Fiber and Preparing Method Thereof

A type of cationic dyeable polyester fiber and preparing method thereof are disclosed. The preparing method is to manufacture a fiber from a cationic modified polyester through a fully drawn yarn (FDY) process, wherein the cationic modified polyester is composed of terephthalic acid segments, ethylene glycol segments, sodium salt of diethylene ester of 5-sulfoisophthalic acid segments and tert-butyl branched diol segments and a molecular formula of tert-butyl branched diol is as following: 2. The preparing method of claim 1 , wherein the tert-butyl branched diol is synthesized by the steps of:(1) mixing 40-50 wt % of an aqueous potassium hydroxide solution and isobutanol in a mole ratio 5-6:1 of potassium hydroxide to the isobutanol at first to obtain a mixture, and then stirring the mixture and carrying out a first reaction under 100-110° C. for 4-5 hours to obtain potassium isobutanol;(2) removing impurities from a system of step (1) and cooling the system of step LU to a normal temperature, then adding in xylene in a mole ratio 1.3-1.5:2.0-3.0 of the potassium isobutanol to the xylene and furtherly reducing a temperature to 0-5° C.;(3) adding 3-methyl-3-hydroxybutyne and M into a system of step (2) with a mole ratio of the 3-methyl-3-hydroxybutyne, the M and the xylene being 1:1.2-1.3:2.0-3.0, then carrying out a second reaction under 40-50° C. for 3 hours, finally obtaining octynylenediol through a series of processes of a cooling crystallization, a centrifugal separation and a drying;(4) mixing the octynylenediol, alcohol and a Pd catalyst in a weight ratio of 2-3:10:0.01-0.03, then carrying out a third reaction accompanied with a continuous hydrogen input at 40-50° C. for 50-60 minutes, finally obtaining the tert-butyl branched diol through a series of processes of a separation and a purification;{'sub': 2', '3', '3', '2', '3', '3, 'wherein R is —H, —CHCH, —CH(CH)or —C(CH), accordingly the M is referred to 2,2-dimethylpropanal, 2,2-dimethyl-3-pentanone, 2,2,4- ...

POLYESTER COMPOSITION HAVING DYEABILITY AT ATMOSPHERIC PRESSURE, METHOD FOR PRODUCING SAME, FIBERS COMPRISING SAME AND MOLDED ARTICLE COMPRISING SAME

Provided are: a polyester composition which balances structural stability with dyeability of disperse dyes at less than 100° C. when made into fibers; and a method for producing said polyester composition. This polyester composition having dyeability at atmospheric pressure: contains components comprising dicarboxylic acid, a diol and polyethylene glycol, with the main repeating components comprising ethylene terephthalate; and is characterized in that 5-10 mol % of the total diol component has three carbon chains with side chains, the content of polyethylene glycol in the polyester composition is 2-4 wt %, and the content of cyclic dimers is not more than 0.35 wt %. 1. A polyester composition dyeable with a disperse dye at atmospheric pressure which comprises a polyester containing a dicarboxylic acid , diol and polyethylene glycol and composed mainly of ethylene terephthalate as main repeating component; the polyester containing a diol component containing three carbon chains and having a side chain; the diol component accounting for 5 to 10 mol % of the total diol content; and the content of the polyethylene glycol and the content of cyclic dimers being 2 to 4 wt % and 0.35 wt % or less , respectively , in the polyester composition.2. A polyester composition dyeable with a disperse dye at atmospheric pressure as described in claim 1 , wherein the diol component containing three carbon chains and having a side chain is 2-methyl-1 claim 1 ,3-propanediol.4. A polyester fiber comprising a polyester composition dyeable with a disperse dye at atmospheric pressure as described .5. A formed article produced by using claim 4 , at least partially claim 4 , a fiber as described in .6. A production method for a polyester composition dyeable with a disperse dye at atmospheric pressure comprising a step for producing a polyester by condensation polymerization of a dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof in the ...

POLYESTERS AND FIBERS MADE THEREFROM

Disclosed herein are polyesters and fibers made therefrom. The fiber comprises a polymer, poly(trimethylene furandicarboxylate) (PTF), and PTF based copolymers. 1. A fiber comprising a polymer , wherein the polymer comprises poly(alkylene furandicarboxylate) obtained by polymerization of reaction mixture comprising furan dicarboxylic acid and a Cto Caliphatic diol.2. The fiber of wherein the poly(alkylene furandicarboxylate) has a number average molecular weight (Mn) in the range of from about 10 claim 1 ,000 to about 40 claim 1 ,000.3. The fiber of wherein the fiber is oriented.4. The fiber of claim 1 , wherein the polymer has a crystallinity of 100 J/g or less claim 1 , as measured by differential scanning calorimetry.5. The fiber of claim 1 , wherein an aliphatic diol comprises a Cdiol and the resulting polymer is poly(trimethylene-furandicarboxylate).6. The fiber of claim 1 , wherein the polymer is a polymer blend comprising (1) poly(trimethylene-2 claim 1 ,5-furandicarboxylate) and (2) a second poly(alkylene-furandicarboxylate) claim 1 ,{'sub': 4', '12, 'wherein the poly(alkylene-furandicarboxylate) is derived from furan dicarboxylic acid or its functional equivalent and an aliphatic diol selected from the group consisting of ethylene glycol, and C, to C, diols, and wherein the blend comprises 0.1 to about 99.9% by weight of poly(alkylene-furandicarboxylate) based on the total weight of the blend.'}7. The fiber of claim 1 , wherein the polymer is a polymer blend comprising (1) poly(trimethylene-2 claim 1 ,5-furandicarboxylate) and (2) a second poly(alkylene terephthalate) that is derived from terephthalic acid or its functional equivalent and a Cto Caliphatic diol claim 1 , and wherein the blend comprises 0.1 to about 99.9% by weight of poly(alkylene terephthalate) based on the total weight of the blend.8. The fiber of claim 1 , wherein the polymer is a copolymer and the furan dicarboxylic acid is 2 claim 1 ,5-furan dicarboxylic acid claim 1 , and wherein the ...

RECYCLED POLYETHYLENE TEREPHTHALATE COMPOSITIONS, FIBERS AND ARTICLES PRODUCED THEREFROM, AND METHODS FOR PRODUCING SAME

In one aspect, the invention relates to recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same. In a further aspect, the invention relates to homogenized post-consumer polyethylene terephthalate. In a further aspect, the invention relates to extruded polymer compositions, polymer mixtures, fibers, and/or Bulked Continuous Filament fibers comprising post-consumer polyethylene terephthalate. In a further aspect, the invention relates to processes for preparing recycled polyethylene terephthalate compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. 139-. (canceled)40. An extruded polymer composition consisting essentially of polyethylene terephthalate polymer composition , wherein the polyethylene terephthalate polymer composition has about 25% by weight to about 100% by weight of homogenized deposit post-consumer polyethylene terephthalate , or homogenized deposit post-industrial polyethylene terephthalate , or a homogenized blend of deposit post-consumer and post-industrial polyethylene terephthalate , and balance virgin polyethylene terephthalate.41. The extruded polymer composition of claim 40 , wherein the polyethylene terephthalate polymer composition has at least about 50% by weight of homogenized deposit post-consumer polyethylene terephthalate claim 40 , or homogenized deposit post-industrial polyethylene terephthalate claim 40 , or the homogenized blend of deposit post-consumer and post-industrial polyethylene terephthalate.42. The extruded polymer composition of claim 40 , wherein the polyethylene terephthalate polymer composition has at least about 75% by weight of homogenized deposit post-consumer polyethylene terephthalate claim 40 , or homogenized deposit post-industrial polyethylene terephthalate claim 40 , or the homogenized blend of deposit post-consumer and post-industrial ...

Recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same

In one aspect, the invention relates to recycled polyethylene terephthalate compositions, fibers and articles produced therefrom, and methods for producing same. In a further aspect, the invention relates to homogenized post-consumer polyethylene terephthalate. In a further aspect, the invention relates to extruded polymer compositions, polymer mixtures, fibers, and/or Bulked Continuous Filament fibers comprising post-consumer polyethylene terephthalate. In a further aspect, the invention relates to processes for preparing recycled polyethylene terephthalate compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Hydrophilic electrospinning biological composite stent material used for tissue regeneration and preparation method and application thereof

A hydrophilic electrospinning biological composite stent material used for tissue regeneration and a preparation method and an application thereof are provided. An aqueous solution of Fibrinogen, L-arginine or hydrochloride thereof and a P(LLA-CL) solution are blended and an electrospinning technology is used to prepare the biological composite stent material. The biological composite stent material has an equilibrium contact angle that is less than 55°, is hydrophilic and has a good application prospect in repairing body tissue defects.

POLYESTER HOLLOW FIBER WITH EXCELLENT SOUND ABSORPTION

Disclosed are a polyester hollow fiber with excellent sound absorption and a method of manufacturing the same. The polyester hollow fiber may have a hollow ratio of about 27% to 35% compared to the cross-sectional area, and the value of the following equation (1) may be about 1.5 or greater, and the hollow in the cross-section preferably may be a three-lobed type and preferably may correspond to the following equation (1).

Polyester yarn for industrial sewing thread and preparing method thereof

A type of polyester yarn for an industrial sewing thread and preparing method thereof are provided. The preparing method is composed of a viscosity enhancing by a solid state polycondensation and a melt spinning for a modified polyester, and the modified polyester is a product of esterification and polycondensation of evenly mixed terephthalic acid, ethylene glycol, tert-butyl branched dicarboxylic acid, trimethylsilyl branched diol and a doped Sb2O3 powder, wherein the tert-butyl branched dicarboxylic acid is selected from the group consisting of 5-tert-butyl-1,3-benzoic acid, 2-tert-butyl-1,6-hexanedioic acid, 3-tert-butyl-1,6-hexanedioic acid and 2,5-di-tert-butyl-1,6-hexanedioic acid. Moreover, the modified polyester is dispersed with a doped ZrO2 powder. An obtained fiber has an intrinsic viscosity drop of 23-28% when stored at 25° C. and R.H. 65% for 60 months.

BIBENZOATE COPOLYESTERS

Copolyesters having improved properties based on a diacid component of 4,4′-biphenyl dicarboxylic acid or 3,4′-biphenyl dicarboxylic acid and a mixed diol component, such as cyclohexanedimethanol (CHDM) with ethylene glycol or neopentyl glycol (NPG), e.g., poly(4,4′-biphenyl dicarboxylate-(ethylene glycol-co-CHDM)), poly(4,4′-biphenyl dicarboxylate-(NPG-co-CHDM)), poly(3,4′-biphenyl dicarboxylate-(ethylene glycol-co-CHDM)), poly(3,4′-biphenyl dicarboxylate-(NPG-co-CHDM)); methods of making the copolyesters; and shaped articles made of the copolyesters. Also, polyesters based on biphenyl dicarboxylic acid and NPG; methods of making the polyesters; and shaped articles made of the polyesters. 1. A copolyester comprising:{'sub': 2', '20', '3', '20, 'a diol component comprising a combination of first and second diols selected from the group consisting of C-Calkylene diols and C-Calicyclic polyhydroxyl compounds; and'}a diacid component comprising a diacid selected from 4,4′-biphenyl dicarboxylate and 3,4′-biphenyl dicarboxylate.2. The copolyester of claim 1 , wherein the diacid component consists essentially of 4 claim 1 ,4′-biphenyl dicarboxylate or 3 claim 1 ,4′-biphenyl dicarboxylate.3. The copolyester of claim 1 , wherein the diol component consists essentially of the first and second diols claim 1 , and may optionally further comprise up to 5 mol % of other diol components claim 1 , based on the total moles of the diol component in the copolyester.4. The copolyester of claim 1 , wherein the diol component is selected from:(a) from about 10 to 90 mol % 1,4-cyclohexanedimethanol (CHDM), and from about 90 to 10 mol % neopentyl glycol (NPG), preferably from about 25 to 75 mol % CHDM, and from about 75 to 25 mol % NPG; or from about 30 to 70 mol % CHDM, and from about 70 to 30 mol % NPG; or from about 35 to 65 mol % CHDM, and from about 65 to 35 mol % NPG; or from about 40 to 60 mol % CHDM, and from about 60 to 40 mol % NPG, based on the total moles of the diol component ...

Terephthalate-co-4,4-bibenzoate polyesters

Copolyesters are based on a diacid component containing terephthalate and 4,4′-biphenyl dicarboxylate or 3,4′-biphenyl dicarboxylate, and a diol component containing an alkylene diol, e.g., ethylene glycol or NPG, and an alicyclic polyhydroxyl compound, e.g., CHDM. The copolyesters may have a glass transition temperature more than 100° C. and mechanical, thermal and/or barrier characteristics at least comparable to some commercially available copolyesters. A method to control the morphology and properties of a copolyester involves contacting diacid and diol components in the presence of a catalyst, selecting proportions of terephthalic and 4,4′-biphenyl dicarboxylic or 3,4′-biphenyl dicarboxylic acids or ester producing equivalents thereof in the diacid component, and selecting the alkylene diol and proportions of the CHDM (or other alicyclic polyhydroxyl compound) and the alkylene diol in the diol component, to obtain the desired morphology and other properties.

ARTIFICIAL HAIR SPINNING NOZZLE AND ARTIFICIAL HAIR PRODUCT MANUFACTURED USING SAME

An artificial hair spinning nozzle includes a nozzle body having a spinning hole extending into the nozzle body. In a cross-sectional view, the spinning hole includes a core section formed at the center of the nozzle body, and three branch sections each formed to radially protrude in an arc shape from the core section at a predetermined angle. The arc shape is bent along one direction to form an outer contour of the spun artificial hair. The branch section includes a convex circular part protruding in a convex circular shape on the end side of the branch section, and a concave circular part recessed between adjacent branch sections in a concave circular sectional shape circumscribed to circles of the convex circular part and the core section. 1. An artificial hair spinning nozzle comprising:a nozzle body extending a predetermined length with a predetermined outer diameter and having a hollow spinning hole extending into the nozzle body in a longitudinal direction and into which a synthetic resin is injected to longitudinally spin artificial hair, wherein in a cross-sectional view, the spinning hole comprises:a core section formed in a circular shape at the center of the nozzle body to serve as the center of the spun artificial hair, wherein the circular shape has a size smaller than the outer diameter of the nozzle body; and a convex circular part located outside the core section and protruding in a convex circular shape on the end side of the branch section so as to form the end side of a branch section of the spun artificial hair; and', 'a concave circular part recessed between adjacent branch sections in a concave circular sectional shape circumscribed to circles of the convex circular part and the core section, respectively, serving to form the inner side of the branch section of the spun artificial hair,, 'a branch section composed of three branch sections formed to radially protrude in an arc shape from the core section at a predetermined angle, wherein the ...

Resin composition, nonwoven fabric and film of biodegradable polyester, and preparation method thereof

The embodiments relate to a biodegradable polyester resin composition, to a nonwoven fabric, to a film, and to processes for preparing the same in which the biodegradable polyester resin composition comprises a specific diol component and a specific dicarboxylic acid component and may further comprise nanocellulose, whereby the biodegradability, flexibility, strength, and processability are enhanced. Since the biodegradable polyester resin composition has enhanced biodegradability, flexibility, strength, and processability as compared with the conventional natural biodegradable polymer widely used, it can be applied to various fields such as films, packaging materials, and nonwoven fabrics to show excellent characteristics.

LIQUID CRYSTAL POLYESTER FIBERS

Liquid crystal polyester fibers containing a liquid crystal polyester, in which the liquid crystal polyester has a repeating unit represented by Formula (1), a repeating unit represented by Formula (2), and a repeating unit represented by Formula (3), at least one repeating unit selected from the group consisting of the repeating unit represented by Formula (1), the repeating unit represented by Formula (2), and the repeating unit represented by Formula (3) contains a 2,6-naphthylene group, a content of the repeating unit containing the 2,6-naphthylene group is 40 mol % or greater with respect to a total content of all the repeating units of the liquid crystal polyester, and an orientation degree of the liquid crystal polyester in a length direction of the fiber is 89% to 95%. (1) —O—Ar—CO—, (2) —CO—Ar—CO—, and (3) —X—Ar—Y—, wherein Arrepresents a phenylene group, a naphthylene group, or a biphenylylene group, Arand Areach independently represent a phenylene group, a naphthylene group, or a biphenylylene group, and at least one selected from the group consisting of Ar, Ar, and Arcontains a 2,6-naphthylene group. X and Y each independently represent an oxygen atom or an imino group (—NH—). Hydrogen atoms of the group represented by Ar, Ar, or Armay be each independently substituted with a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms. 1. A liquid crystal polyester fiber comprising: 'wherein a tensile strength is 25 cN/dtex to 30 cN/dtex, and an orientation degree of the liquid crystal polyester in a length direction of the fiber is 94% to less than 100%.', 'a liquid crystal polyester,'}2. The liquid crystal polyester fiber according to claim 1 ,wherein the liquid crystal polyester has a repeating unit represented by Formula (1), a repeating unit represented by Formula (2), and a repeating unit represented by Formula (3),at least one repeating unit selected from the group consisting of the repeating unit ...

DIACID MODIFIED COPOLYESTERS

Copolyesters having improved properties based on 1,4 cyclohexanedimethanol (CHDM) or neopentyl glycol (NPG), and a diacid component containing a combination of two diacids selected from 4,4′-biphenyl dicarboxylic acid, 3,4′-biphenyl dicarboxylic acid, and terephthalic acid; methods of making the copolyesters; and shaped articles made of the copolyesters. Also, polyesters based N on biphenyl dicarboxylic acid and NPG; methods of making the polyesters; and shaped articles made of the polyesters 1. A copolyester comprising:a diol component comprising a diol selected from one of 1,4-cyclohexanedimethanol (CHDM) and neopentyl glycol (NPG); anda diacid component comprising a combination of first and second diacids selected from the group consisting of 4,4′-biphenyl dicarboxylate, 3,4′-biphenyl dicarboxylate, and terephthalate.2. The copolyester of claim 1 , wherein the diol component consists or consists essentially of CHDM claim 1 , or consists or consists essentially of NPG.3. The copolyester of claim 1 , wherein the diacid component consists essentially of the first and second diacids.4. The copolyester of claim 3 , wherein the diacid component further comprises up to 5 mole percent of another diacid claim 3 , preferably isophthalate claim 3 , based on the total moles of the diacid component in the copolyester.5. The copolyester of claim 1 , wherein the diacid component is selected from:(a) from about 10 to 90 mole percent 4,4′-biphenyl dicarboxylate and from about 90 to 10 mole percent terephthalate, based on the total moles of the diacid component in the copolyester; or(b) from about 10 to 90 mole percent 4,4′-biphenyl dicarboxylate and from about 90 to 10 mole percent terephthalate, and optionally further comprises up to 5 mole percent of isophthalate, 3,4′-biphenyl dicarboxylate, or a combination thereof, based on the total moles of the diacid component in the copolyester; or(c) from about 10 to 90 mole percent 3,4′-biphenyl dicarboxylate and from about 90 to 10 ...

SEMI-CRYSTALLINE THERMOPLASTIC POLYESTER FOR PRODUCING FIBRES

Use of a thermoplastic polyester for producing fibres, said polyester having at least one 1,4:3,6-dianhydrohexitol unit (A), at least one alicyclic diol unit (B) other than the 1,4:3,6-dianhydrohexitol units (A), at least one terephthalic acid unit (C), wherein the ratio (A)/[(A)+(B)] is at least 0.05 and at most 0.30, said polyester being free of non-cyclic aliphatic diol units or comprising a molar amount of non-cyclic aliphatic diol units, relative to the totality of monomeric units in the polyester, of less than 5%, and with a reduced viscosity in solution (25° C.; phenol (50 wt. %): ortho-dichlorobenzene (50 wt. %); 5 g/L of polyester) greater than 50 mL/g. 111-. (canceled)12. A method for the production of a fiber , comprising the following steps of:Provision of a semicrystalline thermoplastic polyester comprising at least one 1,4:3,6-dianhydrohexitol unit (A), at least one alicyclic diol unit (B) other than the 1,4:3,6-dianhydrohexitol units (A), at least one terephthalic acid unit (C), wherein the (A)/[(A)+(B)] molar ratio is at least 0.05 and at most 0.30, said polyester not containing any aliphatic non-cyclic diol units or comprising a molar amount of aliphatic non-cyclic diol units, relative to all the monomer units of the polyester, of less than 5%, and the reduced solution viscosity (25° C.; phenol (50% m):ortho-dichlorobenzene (50% m); 5 of polyester) of said polyester being greater than 50 ml/g;Preparation of said fiber from the semicrystalline thermoplastic polyester obtained in the preceding step.13. The method according to claim 12 , wherein the preparation step is carried out by the melt-spinning method or by (wet or dry) solution processes.14. The method according to claim 12 , wherein the alicyclic diol (B) is a diol chosen from 1 claim 12 ,4-cyclohexanedimethanol claim 12 , 1 claim 12 ,2-cyclohexanedimethanol claim 12 , 1 claim 12 ,3-cyclohexanedimethanol or a mixture of these diols claim 12 , very preferentially 1 claim 12 ,4- ...

BIOBASED PRE-POLYMERS AND USES THEREOF FOR PREPARING POLYMERS WHICH ARE OF USE AS ADDITIVES IN A POLY(LACTIC ACID) MATRIX

The present invention relates to the use of a compound having the following formula (I): 2. The method according to claim 1 , wherein the additives enhance the reinforcement against shocks of a matrix of polyester claim 1 , poly(vinyl chloride) claim 1 , polyurethane claim 1 , polyamide claim 1 , poly(alkyl acrylate) claim 1 , poly(alkyl methacrylate) claim 1 , polystyrene or polyolefin claim 1 , and/or to assist in the nanostructuring of the said matrix.3. (canceled)10. Adhesives claim 7 , surfactants claim 7 , films claim 7 , thermoplastic elastomers claim 7 , paints or fibers comprising compounds having the formulas (IV) according to .11. A composition comprising a matrix of polyester claim 1 , poly(vinyl chloride) claim 1 , polyurethane claim 1 , polyamide claim 1 , poly(alkyl acrylate) claim 1 , poly(alkyl methacrylate) claim 1 , polystyrene or polyolefin claim 1 , and at least one compound having the formulas (II) claim 1 , (III) claim 1 , (IV) claim 1 , (V) or (VI) such as defined in claim 1 , or mixtures thereof claim 1 , and possibly at least one other polymer.12. The method according to claim 2 , wherein the matrix is poly(lactic acid).13. The composition according to claim 11 , wherein the other polymer is selected from poly(butadiene) claim 11 , poly(isoprene) claim 11 , poly(ε-caprolactone) claim 11 , poly(tetrahydrofuran) and poly(ricinoleic acid).14. The Adhesives claim 8 , surfactants claim 8 , films claim 8 , thermoplastic elastomers claim 8 , paints or fibers comprising compounds having the formula (V) according to .15. The Adhesives claim 9 , surfactants claim 9 , films claim 9 , thermoplastic elastomers claim 9 , paints or fibers comprising compounds having the formula (VI) according to . The object of the present invention relates to novel polymers, and in particular polyurethanes, polyesters and polyamides.The object of the present invention also relates to novel pre-polymers, as well as the methods of preparation thereof, and the use thereof ...

Method of producing liquid crystal polyester fibers

A method of producing a liquid crystalline polyester fiber includes subjecting a yarn prepared by melt spinning a liquid crystalline polyester to a solid-phase polymerization after applying inorganic particles (A) and a phosphate-based compound (B) to the yarn. The method can optionally include cleaning the liquid crystalline polyester fiber after the solid-phase polymerization.

USE OF SILICONE CONTENT AND FLUOROPOLYMER ADDITIVES TO IMPROVE PROPERTIES OF POLYMERIC COMPOSITIONS

Described herein are component compositions comprising a blend of a polymer resin together with a fluoropolymer and silicone content additives. In certain embodiments, the components demonstrate improved soil and contaminant resistance as do the industrial fabrics produced that comprise at least one component of the instant invention. 1. A resin component composition comprising:a polymer resin;a fluoropolymer additive; anda silicone content additive.2. The composition according to claim 1 , wherein about 50% to about 98% of said composition by weight comprises a polymer resin.3. The composition according to claim 1 , wherein about 0.5% to about 15% of said composition by weight comprises a fluoropolymer additive.4. The composition according to claim 1 , wherein about 0.5% to about 15% of said composition by weight comprises a silicone content additive.5. The composition according to claim 1 , wherein about 50% to about 98% of said composition by weight comprises a polymer resin claim 1 , about 0.5% to about 15% of said composition by weight comprises a fluoropolymer additive claim 1 , and about 0.5% to about 15% of said composition by weight comprises a silicone content additive.6. The composition according to claim 1 , wherein said polymer resin comprises at least one polyester selected from the group consisting of: polyethylene naphthalate (PEN) claim 1 , polyethylene terephthalate (PET) claim 1 , polybutylene naphthalate (PBN) claim 1 , polytrimethylene naphthalate (PTN) claim 1 , poly(cyclohexylene dimethylene terephthalate) acid (PCTA) claim 1 , and polybutylene terephthalate (PBT).7. The composition according to claim 1 , wherein said fluoropolymer additive comprises at least one fluoropolymer selected from the group consisting of: polytetrafluoroethylene (PTFE) claim 1 , polyvinylidene fluoride (PVDF) claim 1 , ethylene tetrafluoroethylene (ETFE) claim 1 , perfluorinated polyether (PFPE) claim 1 , and a modified fluoroalkoxy (MFA) polymer.8. The composition ...

LIQUID CRYSTAL POLYESTER FIBER AND PRODUCING METHOD THEREOF

Provided is a liquid crystal polyester fiber having high strength, high elastic modulus, high abrasion resistance, excellent processability, and little thermal deformation at high temperature, and also provided is a production method thereof. A liquid crystal polyester fiber, characterized in that the peak half-value width of the endothermic peak (Tm1) observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min is 15° C. or higher, the polystyrene-converted weight-average molecular weight is between 250,000 and 2,000,000 inclusive, the peak temperature of the loss tangent (tan δ) is between 100° C. and 200° C. inclusive, and the peak value of the loss tangent (tan δ) is between 0.060 and 0.090 inclusive. A mesh fabric comprising the liquid crystal polyester fiber. A production method for melt liquid crystal polyester fiber, characterized in that liquid crystal polyester fiber obtained by melt-spinning is subject to solid-phase polymerization, and subsequently heat treated at a stretch ratio of at least 0.1% and under 3.0% at a temperature at least 50° C. higher than the endothermic peak temperature (Tm1) as observed when measuring by differential calorimetry under rising temperature conditions starting at 50° C. and increasing 20° C./min. 1. A liquid crystal polyester fiber having: a peak half-value width of 15° C. or more at an endothermic peak (Tm1) observed by a differential calorimetry under a temperature elevation condition of 20° C./min from 50° C.; a weight-average molecular weight in terms of polystyrene of 250 ,000 or more and 2 ,000 ,000 or less; a peak temperature of a loss tangent (tan δ) of 100° C. or more and 200° C. or less; and a peak value of the loss tangent (tan δ) of 0.060 or more and 0.090 or less.2. The liquid crystal polyester fiber according to 1 , wherein the fiber has a strength fluctuation rate of 10% or less.3. A mesh fabric comprising the liquid crystal polyester ...

THERMALLY AND DIMENSIONALLY STABILIZED ELECTROSPUN COMPOSITIONS AND METHODS OF MAKING SAME

Thermally stable absorbable fiber populations, i.e. fiber populations that do not undergo thermally induced crystallization, can be intermixed with thermally unstable fibers to yield a stabilizing effect without altering morphological properties of a fiber system. Via this, one may minimize thermally induced shrinkage and maintain physical properties of electrospun materials in the as-formed state.

Fiber For Artificial Hair And Hair Ornament Product Including Same

The present invention relates to a fiber for artificial hair having a hollow in a center of a fiber cross section. A ratio of an area of the hollow to an entire area of the fiber cross section is 5% to 50%. The fiber cross section has a flat multilobed shape, and the hollow has a first side and a second side that are inclined 70 to 110 degrees relative to a major axis of the fiber cross section. The present invention also relates to hair ornament products including the above fiber for artificial hair. Thus, the present invention provides a fiber for artificial hair having a favorable curl setting property when curling with a hair iron and a favorable combing property after curling with a hair iron, and hair ornament products including the same.

POLYESTER ARTIFICIAL HAIR AND METHOD OF PREPARING THE SAME

A flame-retardant polyester artificial hair filaments according to the present invention comprises: (A) 100 parts by weight of a thermoplastic polyester resin; (B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant; (B) 5-10 parts by weight of a polymeric phosphorus flame retardant; (D) 0.1-3 parts by weight of a chain extender; and (E) 0.5-3 parts by weight of sodium antimonate. 1. A flame-retardant polyester artificial hair filaments , which comprises:(A) 100 parts by weight of a thermoplastic polyester resin;(B) 10-20 parts by weight of a polymeric brominated polystyrene flame retardant;(C) 5-10 parts by weight of a polymeric phosphorus flame retardant;(D) 0.1-3 parts by weight of a chain extender; and(E) 0.5-3 parts by weight of sodium antimonate.2. The flame-retardant polyester artificial hair filaments of in which said polyester resin (A) is selected from the group consisting of polyethylene terephthalate (PET) claim 1 , polybutylene terephthalate (PBT) claim 1 , polypropylene terephthalate (PPT) claim 1 , polycyclohexanedimethanol terephthalate (PCT) claim 1 , and polynaphthalene terephthalate (PEN).6. The flame-retardant polyester artificial hair filaments of in which said sodium antimonate (E) is a compound having an average particle diameter of 0.1-1.0 μm and is represented by Formula 5:{'br': None, 'sub': 2', '3', '2, 'i': '.n', 'NaSbOHO\u2003\u2003Formula 5'}7. The flame-retardant polyester artificial hair filaments of claim 1 , which further comprises an inorganic quencher claim 1 , a thermal stabilizer claim 1 , a light stabilizer claim 1 , a UV stabilizer claim 1 , a fluorescent agent claim 1 , an antioxidant claim 1 , an antistatic agent claim 1 , a pigment claim 1 , a dye claim 1 , a plasticizer claim 1 , a lubricant claim 1 , a flame retardant claim 1 , a flame retardant aid claim 1 , and/or an inorganic filler.8. The flame-retardant polyester artificial hair filaments of claim 1 , which has a fineness of 40-100 denier.9. A ...

COMPOSITIONS AND METHODS FOR THE INTRODUCTION OF ELASTOMERIC REINFORCEMENT FIBERS IN ASPHALT CEMENT CONCRETE

The present invention relates to elastomeric polymer fiber reinforced asphalt cement concrete for use in a variety of applications. In particular, the reinforcement fibers are effective to reduce or preclude voids and/or cracks formed in the asphalt upon placement and to render a self-healing property to the placed asphalt. 1. A fiber-reinforced asphalt composition , comprising:asphalt; anda plurality of reinforcement fibers composed of elastomeric polymer, and absent of material selected from the group consisting of ground rubber tire, tire aggregate and tire particulate.2. The asphalt composition of claim 1 , wherein the elastomeric polymer comprises synthetic polymer containing polyurethane.3. The asphalt composition of claim 2 , wherein the elastomeric polymer comprises spandex.4. The asphalt composition of claim 1 , wherein the elastomeric polymer has an aspect ratio from about 20 to about 5000 claim 1 , and the plurality of reinforcement fibers has a denier from about 20 to about 1500 and a length from about 1/16-inch to about 3 inches.5. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of natural polyisoprene and synthetic polyisoprene.6. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of polybutadiene claim 1 , chloroprene rubber claim 1 , polychloroprene rubber claim 1 , butyl rubber claim 1 , styrene-butadiene rubber claim 1 , nitrile rubber and mixtures thereof.7. The asphalt composition of claim 1 , wherein the elastomeric polymer is selected from the group consisting of ethylene propylene rubber claim 1 , ethylene propylene diene rubber claim 1 , epichlorohydrin rubber claim 1 , polyacrylic rubber claim 1 , silicone rubber claim 1 , fluoro silicon rubber claim 1 , fluoroelastomers claim 1 , perfluoroelastomers claim 1 , polyether block amides claim 1 , chlorosulfonated polyethylene claim 1 , ethylene-vinyl acetate and mixtures thereof.8. ...

FILAMENTARY TAPE AND COMPOSITE MATERIAL INCLUDING SAID TAPE

Provided is a filamentary tape () comprising liquid crystal polyester fiber multifilaments (), in which bundles of the fibers aligned in one direction are unified into a tape shape. The filamentary tape () comprises the multifilaments () including a plurality of liquid crystal polyester fibers aligned in one direction are unified by partial fusion between the liquid crystal polyester fibers. 1. A filamentary tape comprising multifilaments including a plurality of liquid crystal polyester fibers , wherein the multifilaments aligned in one direction are unified by partial fusion between the liquid crystal polyester fibers.2. The filamentary tape according to claim 1 , wherein the filamentary tape has a fusion score of 10 or higher.3. The filamentary tape according to claim 1 , wherein the filamentary tape has a tensile strength of 2.5 GPa or higher claim 1 , a strength retention rate at 100° C. of 40% or higher and a strength exhibiting rate at 150° C. of 30% or higher.4. The filamentary tape according to claim 1 , wherein in the filamentary tape claim 1 , a ratio (a/L) of a thickness ato a theoretical single fiber diameter L is 1.5 or higher.5. The filamentary tape according to claim 1 , wherein the filamentary tape has a width/thickness ratio of 5 or higher and 10000 or lower.6. The filamentary tape according to claim 1 , wherein in the filamentary tape claim 1 , a coefficient of variation in width is 20 CV % or lower.7. The filamentary tape according to claim 1 , wherein in the filamentary tape claim 1 , a coefficient of variation in thickness is 15 CV % or lower.8. A weaving material comprising a filamentary tape according to .9. A woven fabric comprising a filamentary tape according to .10. A composite material comprising a filamentary tape according to . This application is a continuation application, under 35 U.S.C.§ 111(a), of international application No. PCT/JP2019/003916 filed Feb. 4, 2019, which claims priority to Japanese patent application No. 2018-19322 ...

METHOD FOR MANUFACTURING WHOLLY AROMATIC LIQUID-CRYSTALLINE POLYESTER FIBER WITH ENHANCED SPINNABILITY

The present invention relates to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber with enhanced spinnability, and more specifically, to a method for manufacturing a wholly aromatic liquid-crystalline polyester fiber including: pelletizing a resin manufactured by adding 1.08 equivalents to 1.12 equivalents of acetic anhydride to raw material monomers including hydroxy benzoic acid, hydroxy naphthoic acid, biphenol, terephthalic acid, and isophthalic acid, followed by solid-phase polycondensation, and melt-spinning under oil conditions in which winding-up improving oil is diluted to 0.5% to 2% and silicone spinning oil for high temperature is diluted to 0.5% to 2%, respectively, with water as a solvent. 1. A method for manufacturing a wholly aromatic liquid-crystalline polyester fiber comprising:performing acetylation reaction by stirring raw material monomers including hydroxy benzoic acid, hydroxy naphthoic acid, biphenol, terephthalic acid, and isophthalic acid, and adding a reactive solvent thereto together with an organic catalyst or an inorganic catalyst (Step A);manufacturing a prepolymer by heating to perform an esterification reaction and polycondensation after performing the acetylation reaction (Step B);manufacturing a polyester resin by solid-phase polycondensation of the prepolymer (Step C);manufacturing wholly aromatic liquid-crystalline polyester resin pellets by extruding the polyester resin (Step D);manufacturing a wholly aromatic liquid-crystalline polyester fiber by melt-spinning the pellets (Step E); andheat-treating the fiber through a plurality of heating steps (Step F),wherein in Step A, 1.08 equivalent to 1.12 equivalents of acetic anhydride is added as the reactive solvent.2. The method of claim 1 , whereinthe plurality of heating steps in Step F include:{'sub': 1', '2', '1, 'a first step of heating from a first temperature Tto a second temperature Tat a first heating rate V;'}{'sub': 2', '3', '2, 'a second step ...

Copolyesters and fibrous materials formed therefrom

This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.

Fiber and fiber structure

Copolyesterimides derived from N,N′-bis-(hydroxyalkyl)-3,3′,4,4′-diphenylsulfonetetracarboxylic diimide and films made therefrom

A copolyester comprising repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (Formula (I)) wherein n=2, 3 or 4, Z is S(═O) 2 , and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester; and films, fibers, molding compositions or molded articles comprising said copolyester.

Copolyesterimides derived from aromatic dicarboxylic acids and aliphatic glycols and films made therefrom

A film comprising a copolyester wherein said copolyester comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and a comonomer (M) selected from the group consisting of N,N′-bis-(2-hydroxyalkyl)-bicyclo-[2,2,2]-oct-7-ene-2,3,5,6-tetracarboxylic diimide (BODI) and 2-hydroxyalkyl-2-[p-(2-hydroxyethoxycarbonyl)phenyl]-1,3-dioxo-2H-isoindole-5-carboxylate (DOIC), wherein the number of carbon atoms is the 2-hydroxyalkyl group is 2, 3 or 4, and wherein comonomer (M) constitutes a proportion of the glycol fraction of the copolyester.

Copolyesterimides derived from N,N′-bis-(hydroxyalkyl)-benzophenone-3,3′,4,4′-tetracarboxylic diimide and films made therefrom

A semi-crystalline biaxially oriented film comprising a copolyester which comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (I) wherein n=2, 3 or 4, Z is C═O, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester and is present in an amount of at least about 4 mol % of the glycol fraction of the copolyester.