Verfahren zur Herstellung hochpolymerer Polyester

Verfahren zur Herstellung von Polykondensaten

Verfahren zur Herstellung von Polyestern

KATALYSATOR ZUR HERSTELLUNG VON POLYESTER, VERFAHREN ZU SEINER HERSTELLUNG UND VERFAHREN ZUR HERSTELLUNG VON POLYESTER MIT VERWENDUNG DIESER KATALYSATOR

Verfahren zur Herstellung von Polyaethylenterephthalat

HERSTELLUNG VON COPOLYÄTHERESTERN

Verfahren zur Herstellung von oelmodifizierten Alkydharzen

Polyurethan-Prepolymer mit NCO-Gruppen

Described is an NCO-group-containing polyurethane prepolymer madefrom polyisocanyates and polyols derived from natural oils. The invention is characterized in that the polyol is obtained by transesterification in the presence of basic lithium compounds. Together with a tertiary amine used to accelerate the moisture curing, the storage stability is thus increased considerably. Up to 4.0 mmol of the lithium compound is used per kilogram of polyol, and 0.1 to 2.0 % by wt. of the amine, relative to the total weight of the composition, is used as the accelerator. The polyurethane prepolymer is suitable not only for the production of adhesives but also for the production of foamed materials, in particular those dispensed from throw-away pressure vessels.

POLYESTER CATALYSTS

... 1421972 Polyesters IMPERIAL CHEMICAL INDUSTRIES Ltd 26 June 1974 [16 July 1973] 33716/73 Heading C3R A process for the manufacture of polyesters and copolyesters comprises the reaction of at least one aromatic dicarboxylic acid with at least one diol in the presence of a titanium compound as catalyst which is soluble in the reaction mixture, until esterification is substantially complete, and the deactivation of the titanium compound by reaction with phosphoric acid or a phosphate ester and polycondensation in the presence as catalyst of an antimony and/or germanium compound soluble in the reaction mixture. Suitable acids includes terephthalic acid, naphthalene-2,6-dicarboxylic acid, 1,2- diphenoxyethane - 4,41 - dicarboxylic acid and biphenyl - 4,41 - dicarboxylic acid. Suitable diols have the formula HO(CH 2 ) n OH where n= 2-10. The preferred polyester is polyethylene terephthalate. The polyester may also be a copolyester comprising units based on a second dicarboxylic ...

Improvements relating to the production of fibre-forming polyesters

... 1,135,233. Poly (glycol terephthalates). COURTAULDS Ltd. 7 April, 1966 [12 April, 1965; 3 Dec., 1965], Nos. 15358/65 and 51356/65. Heading C3R. In the manufacture of fibre-forming polyesters by (a) effecting an esterification or ester-interchange reaction between a polymethylene glycol containing 2 to 10 carbon atoms and terephthalic acid or an ester thereof and (b) polycondensing the resulting polymethylene glycol terephthalate or low polymer thereof, the esterification or ester-interchange catalyst used is a mixture of a manganous salt and a cobaltous salt, preferably a mixture of manganous acetate and cobaltous acetate. The same catalyst mixture may also serve as the polycondensation catalyst, but preferably an antimony compound (e.g. antimony oxide) is added before polycondensation. A stabilizer (e.g. triphenyl phosphite or triphenyl phosphate) may be included in the polycondensation stage. Examples describe the manufacture of polyethylene terephthalate from ethylene glycol and terephthalic ...

Process for the manufacture of Fibre- and Film-forming Polyesters

... 1,176,613. Polyethylene terephthalate. FARBWERKE HOECHST A.G. 18 April, 1968 [19 April, 1967], No. 18406/68. Heading B5B. [Also in Division C3] Polyethylene terephthalate chips are melted and spun at 280 degrees from a 24 hole nozzle of a hole diameter 0À25 mm. at a rate of 19À2 g. min-1 and a draw off rate of 500 m. min-1. Filaments of 100 spinning bobbins are combined into a tow of titre about 2000. The tow was drawn at a ratio of 1 : 4 passing at a feed of 13À5 metres through a steam zone. The tow was passed over two flat irons and then dried by passing over an iron at 140‹ C. The sliver was crimped in a stuffing chamber and cut to staple length.

IMPROVEMENTS RELATING TO ALKYD RESINS

... 1,240,230. Alkyd resins. SOC. ITALIANA RESINE S.p.A. 24 Dec., 1969 [31 Dec., 1968], No. 62925/69. Heading C3R. Alkyd resins are obtained by polycondensing polyhydroxyl alcohols with polycarboxylic acids in the presence of drying oils, characterized by the addition of one or more alkyl or aryl phosphites during the polycondensation in a quantity of 0.05 to 0.8% by weight based on the monomers, and treatment of the polycondensate with a naphthenate or octoate of Ca, Pb, Mn, Co, Cu, Fe, Ce or Zr and a peroxide at from 40-100‹ C. for 30-50 minutes. Preferred reagents are: Phosphites-trimethyl, triethyl and triphenyl phosphites; Peroxides-methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, and cumoyl peroxides and t-butyl hydroperoxide. The alkyd exemplified is a soya oil modified glyceryl phthalate.

Sulphur polyesters.

PROCEDURE FOR THE PRODUCTION OF COPOLYESTERN FROM POLYETHYLENE TEREPHTHALATE

Procedure for the production linear satisfied polyester

VERFAHREN ZUR HERSTELLUNG VON FUMARSAURE-POLYESTERHARZEN

POLYMERIZATION CATALYST FOR THE PRODUCTION FROM POLYESTER, POLYESTER AND PROCEDURE TO ITS PRODUCTION

PROCEDURE FOR THE PRODUCTION A EMAILLACK WITH LOW COEFFICIENT OF FRICTION AND WITH THIS EMAILLACK COATED ELECTRICAL CONDUCTOR

PROCEDURE FOR THE PRODUCTION OF AIR-DRYING UNGESATTIGTEN POLYESTER RESINS

PROCEDURE FOR THE PRODUCTION OF A POLYESTER.

PROCEDURE FOR THE PRODUCTION OF MIXTURES OF POLYCARBONATE AND POLY (1.4 - CYCLOHEXANDIMETHYLOLTEREPHTHALAT) WITH DECREASED YELLOWNESS.

PROCEDURE FOR THE PRODUCTION OF INSATIATED POLYESTERPOLYOLEN

Procedure for the production of fiber and film-forming polyesters

Procedure for the production of polyethylene terephthalate using alkaline-earth containing transesterification catalysts

Procedure for the production of high-polymere, pigmented Polymethylenterephthalat

Procedure for dispersing solids

POLYMERIZATION CATALYSTS

Procedure for the Hestellung of high-polymere linear polyesters

Procedure for the production of polyethylene terephthalate

Poly(dihydroferulic acid) a biorenewable polyethylene terephthalate mimic derived from lignin and acetic acid and copolymers thereof

An embodiment of the invention is directed to a biorenewable thermoplastic, poly(dihydroferulic acid) (PHFA), which is an effective polyethylene terephthalate (PET) mimic. In another embodiment of the invention, a biorenewable thermoplastic copolymer, poly(dihydroferulic acid- ...

Poly(dihydroferulic acid) a biorenewable polyethylene terephthalate mimic derived from lignin and acetic acid and copolymers thereof

An embodiment of the invention is directed to a biorenewable thermoplastic, poly(dihydroferulic acid) (PHFA), which is an effective polyethylene terephthalate (PET) mimic. In another embodiment of the invention, a biorenewable thermoplastic copolymer, poly(dihydroferulic acid- ...

PREPARATION OF POLYESTERS

HEAT RESISTANT POLYMERS AND BLENDS OF HYDROQUINONE POLY(ISO-TEREPHTHALATES)CONTAINING RESIDUES OF P-HYDROXYBENZOIC ACID

PROCESS FOR PRODUCING POLYTRIMETHYLENE TEREPHTHALATE

A process for the polymerization of polytrimethylene terephthalate by esterification of terephthalic acid or dimethylterephthalate with 1,3-propane diol, precondensation of the esterification product to produce a precondensation product, and polycondensation of the precondensation product to produce polytrimethylene terephthalate and, as a byproduct, the cyclic dimer of terephthalic acid or dimethyl terephthalate and 1,3-propane diol, comprising: (a) recovering the cyclic dimer from the polymerization, (b) reacting from 0.5 to 25 percent by weight of the cyclic dimer in 1,3-propane diol in the presence of from 0.1 to 10 percent by weight of the cyclic dimer of a basic catalyst for five minutes to 24 hours at 50 to 210 .ordm.C, (c) optionally neutralizing the basic catalyst in the reaction product of (b), and (d) recycling the reaction product into the polymerization process.

ETHOXYLATED VEGETABLE OILS IN LOW DENSITY SPRAY FOAM FORMULATIONS

Alkoxylated natural oils are useful for preparation of water-blown polyurethane foams and can replace polyols and emulsifiers generally used in the art to provide polyol compositions having greater shelf-stability and blend-stability. Methods for preparing polyol compositions useful for preparation of water-blown polyurethane compositions, for preparing the polyurethane compositions using the polyol compositions, and kits comprising the polyol compositions are also described.

METHOD OF PRODUCING A POLYESTER, AND USE OF THE POLYESTER THUS PRODUCED

... 2111969 9322367 PCTABS00027 The invention concerns a method of producing, without using antimony, a polyester from poly(ethylene terephthalate) units. Following esterification, a mixed catalyst consisting of 10 to 75 ppm of lithium and 15 to 80 ppm of germanium is used for polycondensation. The antimony-free polyester thus obtained is suitable for use in the manufacture of bottles, sheeting, film, fibre, filaments and moulded articles.

CATALYST SYSTEM FOR PRODUCING POLYETHYLENE TEREPHTHALATE FROM A LOWER DIALKYL ESTER OF A DICARBOXYLIC ACID AND A GLYCOL

A novel catalyst composition, and a process for using the novel catalyst system to produce polyester is described. The novel catalyst composition is specific for producing polyester from a lower dialkyl ester of a dicarboxylic acid and glycol, wherein the catalyst composition includes from about 20 ppm to about 150 ppm manganese; from about 50 ppm to about 250 ppm lithium; from about 10 ppm to about 40 ppm cobalt; and from about 200 ppm to about 400 ppm antimony, all amounts being based upon the expected yield of the polyester. The process for using the novel catalyst composition to make polyester includes the step of employing an effective catalytic amount of manganese and lithium in an ester interchange reaction from a lower dialkyl ester of a dicarboxylic acid and glycol to produce monomer; and using an effective catalytic amount of cobalt and antimony in the polycondensation reaction to convert the monomer to polyester. Using the novel catalyst composition or novel process to produce ...

CATALYST SYSTEM FOR PRODUCING POLYETHYLENE TEREPHTHALATE FROM A LOWER DIALKYL ESTER OF A DICARBOXYLIC ACID AND A GLYCOL

CATALYST SYSTEM AND PROCESS FOR PREPARING POLYETHYLENE TEREPHTHALATE

CATALYST SYSTEM AND PROCESS FOR PREPARING POLYETHYLENE TEREPHTHALATE A novel catalyst system, a process for using the novel catalyst system, and a product made from the process is described. The novel catalyst system is specific for producing polyethylene terephthalate made from reacting terephthalic acid and ethylene glycol, wherein the catalyst system includes antimony; cobalt and/or zinc, and at least one of zinc, magnesium, manganese or calcium. The antimony is generally present from about 150 ppm to about 1100 ppm. The cobalt and/or zinc is usually present from about 5 ppm to about 60 ppm, and the zinc, magnesium, manganese or calcium, as the third component, is generally present from about 10 ppm to about 150 ppm. The. amounts of all catalyst components are based on the theoretical yield of the polymer. Using the novel catalyst system to produce PET drastically increases the polymerization rate. In the process, the novel catalyst system can be introduced any time before the polycondensation ...

POLYESTER POLYCONDENSATION WITH LITHIUM TITANYL OXALATE CATALYST

This invention relates to a method for manufacturing polyesters, in particular, to using a lithium titanyl oxalate as the catalyst for such reaction to provide fast reactions with excellent color properties for the resulting polyester. The present invention provides an improved method of producing polyester by the polycondensation of polyester forming reactants wherein the improvement comprises utilizing, as the polycondensation catalyst, lithium titanyl oxalate. The improved process produces a polyester of improved color verses other titanyl oxalate catalysts and a novel polyester without the presence of antimony.

Variable Kurbel mit hydraulischer Steuerungseinrichtung.

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung hochpolymerer Polyester der Terephthalsäure mit Polymethylen-glykolen

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung eines hochpolymeren Polymethylen-terephthalats

Verfahren zur Herstellung von Polyäthylen-terephthalat

Verfahren zur Herstellung eines Polyesters

Verfahren zur Herstellung von Polyäthylenterephthalat

Verfahren zur Herstellung hochmolekularer linearer Polyester

Verfahren zur katalytischen Umesterung von Benzoldicarbonsäure-alkylestern mit Glykolen

Verfahren zur Herstellung hochmolekularer linearer Polyester aus Diolestern aromatischer Dicarbonsäuren

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Poly-(äthylenglykolterephthalat) durch Umsetzung von Dimethylterephthalat mit Äthylenglykol und Polykondensation des Umsetzungsproduktes

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

Verfahren zur Herstellung von Polyäthylenterephthalat

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyäthylenterephthalat unter Verwendung von Erdalkali enthaltenden Umesterungskatalysatoren

Verfahren zur Herstellung von Polyestern der Terephthalsäure

Procédé de préparation de polyesters soufrés

Verfahren zur Herstellung von Polyäthylenterephthalat durch Polykondensation von Umsetzungsprodukten aus Dimethylterephthalat und Äthylenglykol

Verfahren zur Herstellung von faser- und filmbildenden Polyestern

Verfahren zur Herstellung von modifizierten Polyäthylenterephthalat-Fasern

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyestern

Procédé de préparation d'acétylacétonate manganeux

Verfahren zur Herstellung eines Faserkabels aus Polyäthylenglykolterephthalat für die Verarbeitung auf Reissmaschinen

Procédé de fabrication de polyesters synthétiques fortement polymères

Procédé de préparation de polyesters polyméres, notamment de téréphtalate de polyéthylène

Verfahren zur Herstellung von synthetischen, hochpolymerisierten Polyestern

Verfahren zur Herstellung linearer Polyester oder Mischpolyester

Verfahren zur Herstellung eines hochmolekularen Mischpolyesters aus Äthylenglykol-terephthalat-isophthalat

Verfahren zur Herstellung von Polyäthylenterephthalat

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyestern bzw. Copolyestern

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von hochpolymeren linearen Polyestern

Verfahren zur Herstellung von hochpolymerem, mattiertem oder pigmentiertem Polyglykolterephthalat

Verfahren zur Herstellung von Polyestern

Verfahren zur Herstellung von Polyalkylenterephthalaten

Verfahren zur Herstellung von faser- und filmbildenden Polyestern

Verfahren zur Herstellung hochmolekularer Polyester für Spritzgusszwecke

Polyester prodn - from terephth alic acid and ethylene glycol, two step process using acid excess in first

Linear polyester prodn. by direct esterification of terephthalic acid (I) with ethylene glycol (II) in 1:1.1 to 1:1.5 mol. ratio at raised temp. and pressure up to partial pressure of (II) at temp. used, in presence of previously prepd. esterification product, followed by polycondensation, is modified by carrying out first step reaction under at least atmospheric pressure with (II):(I) mol. ratio 1:1, pref. at 1-5 atm. absolute and 240-260 degrees C and adding (II) bal. reqd. to achieve desired (I):(II) mol. ratio of 1:1.1 to 1:1.5 in the second step, under raised pressure, pref. at 240-280 degrees C, after completing the addn. of the required amt. of (I), and then completing esterification under pressure. Pure white polyesters of high m. pt. are produced. Esterification pref. takes place in presence of a catalyst, pref. Na terephthalate.

PROCEDURE FOR THE PRODUCTION OF IN THE MELT PROCESSABLE ONE, COMPLETE AROMATIC OXYBENZOYL HOMO OR - COPOLYESTERN.

Method for preparing regenerative low-melting-point polyester with waste-polyester alcoholysis method

Preparation method for lactide modified polyether polyol

Hydrolysis-resisting fire-retardant polyester and production method thereof as well as film prepared by using polyester

The invention discloses hydrolysis-resisting fire-retardant polyester and a production method thereof as well as a film prepared by using the polyester. The hydrolysis-resisting fire-retardant polyester comprises at least one compound A, at least one compound B and at least one compound C, wherein the at least one compound A is selected from phosphorus compound stabilizers, the at least one compound B is selected from benzoate compounds, and the at least one compound C is selected from phosphorus-containing reaction type fire-retardant agents. The polyester and the film prepared by the polyester have the advantages of good hydrolysis resistance and good fire retardance.

Synthesis device, application thereof and method for producing thermotropic liquid crystal polymer

A industrial polyester and its preparation method

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

本发明涉及由对苯二甲酸、间苯二甲酸和乙二醇制备聚对苯二甲酸乙二醇酯共聚酯的方法，包括以下步骤：a)制备含有锌化合物的催化剂组合物，其中元素锌含量为基于该共聚酯的大约50到大约500ppm，优选大约200到大约500ppm，最优选大约180到大约260ppm，b)将该催化剂组合物、对苯二甲酸、间苯二甲酸和乙二醇投入到容器内，和c)让对苯二甲酸、间苯二甲酸和乙二醇在酯化步骤和缩聚步骤中反应，从而获得聚对苯二甲酸乙二醇酯共聚酯。本发明还涉及由此获得的共聚酯及其用途以及适于本发明方法的催化剂组合物。

Method for preparing poly (delta-valerolactone)

The invention belongs to the technical field of metal catalysis and high polymer materials, and discloses a method for preparing poly (delta-valerolactone). According to the present invention, the safe and cheap zinc hydrocarbon oxygen compound catalyst with ideal catalysis effect is adopted to prepare the poly (delta-valerolactone) at 0-200 DEG C in the presence of the organic solvent or the absence of the solvent so as to obtain the polymer with the controllable molecular weight, and the polymer with the molecular weight exceeding the entanglement shows the good mechanical property. The invention overcomes the defects of industrial common metal catalysts in the aspects of safety, environmental sensitivity and catalyst effect, and provides a simple, mild and efficient polymerization method.

Preparation method of medical polycaprolactone

The invention discloses a preparation method of medical grade polycaprolactone and derivatives thereof, and belongs to the field of high polymer materials. A solution polymerization method is adopted, lactide and epsilon-caprolactone are used as monomers to prepare polycaprolactone (PCL) and derivatives thereof (PLLCL and PDLCL), the production process is simple, and reaction conditions are mild; compared with a melt catalytic polymerization method, an efficient catalytic system which takes an organic metal compound as a main catalyst and a substance containing reactive hydrogen as an initiator is adopted, so that the reaction speed is high, the reaction time is short, the weight-average molecular weight of a product is adjustable, and the lowest molecular weight distribution index can reach 1.2; the problems of high molecular weight, high viscosity and difficulty in post-treatment of reaction products are solved, and the application requirements of medical polymer materials can be better ...

Preparation method of high isotactic polylactide

The invention provides a preparation method of high isotactic polylactide, and belongs to the technical field of polymer preparation. The preparation method of the high isotactic polylactide provided by the invention comprises the following steps: mixing a lactide monomer, a main catalyst, a cocatalyst and an organic solvent, and carrying out ring-opening polymerization reaction to obtain the high isotactic polylactide. According to the present invention, based on the combination of the achiral bis (thio) urea catalyst and the co-catalyst, the lactide monomers (including DLA, LLA and rac-LA) can be polymerized under the mild condition to obtain the high isotactic polylactide; meanwhile, the bis (thio) urea catalyst is cheap and easy to obtain, and is suitable for large-scale production of high-isotactic polylactide.

Improvements brought to the manufacture of polyesters

Process for the polycondensation of products of reaction of dimethyl terephthalate and the ethylene glycol

Process for making polyethylene terephthalate

The invention relates to a process for making polyethylene terephthalate (PET) from ethylene glycol (EG), purified terephthalic acid (PTA) and optionally up to 30 mol % comonomer, using a catalyst system essentially consisting of antimony—(Sb), zinc—(Zn) and phosphorous—(P) compounds, comprising the steps of a) esterifying EG and PTA to form diethyleneglycol terephthalate and oligomers (DGT), and b) melt-phase polycondensing DGT to form polyester and EG1 wherein the Sb- and P-compounds are added in step a) and the Zn-compound is added after step a). With this process PET can be obtained that shows favourable colour and optical clarity, also if recycling of EG is applied in the process, and a relatively low rate of acetaldehyde re-generation during melt-processing.

Catalytic systems for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates

The present invention discloses new catalyst systems based on complexes of divalent metals supported by chelating phenoxy ligands for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates.

ACCELERATOR SOLUTION AND PROCESS FOR CURING CURABLE RESINS

Solution suitable for accelerating the cure of a curable resin using a peroxide, said accelerator solution comprising (i) at least one organic solvent, (ii) a manganese salt, a copper salt, or a combination thereof, and (iii) an iron complex of a tetradentate, pentadentate or hexadentate nitrogen donor ligand. 2. The accelerator solution according to wherein the iron complex comprises a nitrogen donor ligand according to formula (I).3. The accelerator solution according to wherein the manganese salt is selected from Mn(II) chloride claim 1 , Mn(II) nitrate claim 1 , Mn(II) sulphate claim 1 , Mn(II) lactate claim 1 , Mn(II) 2-ethyl hexanoate claim 1 , Mn(II) octanoate claim 1 , Mn(II) nonanoate claim 1 , Mn(II) heptanoate claim 1 , Mn(II) neodecanoate claim 1 , Mn(II) naphthenate claim 1 , and Mn(II) acetate.4. The accelerator solution according to wherein the copper salt is selected from Cu(II) acetate claim 1 , Cu(I)chloride claim 1 , Cu(II) octanoate claim 1 , Cu(II) nonanoate claim 1 , Cu(II) heptanoate claim 1 , Cu(II) neodecanoate claim 1 , and Cu(II) naphthenate.5. The accelerator solution according to comprising both a copper salt and a manganese salt.6. The accelerator solution according to additionally comprising a promoter selected from amines and metal carboxylates.7. The accelerator solution according to wherein the promoter is selected from the group consisting of triethyl amine claim 6 , dimethylaniline claim 6 , diethylaniline. N claim 6 ,N′-dimethyl-p-toludine claim 6 , 1 claim 6 ,2-(dimethyl amine)ethane claim 6 , diethyl amine claim 6 , triethanol amine claim 6 , dimethylamino ethanol claim 6 , diethanol amine claim 6 , monoethanol amine claim 6 , and the 2-ethyl hexanoates claim 6 , octanoates claim 6 , nonanoates claim 6 , heptanoates claim 6 , nsodeoanoates claim 6 , and naphthenates of Na claim 6 , K claim 6 , Li claim 6 , Ba claim 6 , Cs claim 6 , Ce claim 6 , Mg claim 6 , Ca claim 6 , Zn claim 6 , Cu claim 6 , Ni claim 6 , Mn claim 6 , Sn ...

Catalyst composition

The disclosure provides a catalyst composition, including: a metal or metal compound; and an organic diacid metal salt. The metal includes titanium (Ti), stibium (Sb) or combinations thereof and the metal compound includes antimony oxide (Sb 2 O 3 ) or tetra-n-butoxy titanium (TBT). The catalyst composition includes about 0.3-6 wt % of the metal or metal compound and about 94-99.7 wt % of the organic diacid metal salt.

SOLID-PHASE POLYMERIZATION METHOD FOR PREPARING HIGH-MOLECULAR-WEIGHT ALIPHATIC POLYESTER

A solid-phase polymerization method of high-molecular-weight aliphatic polyester conducts the solid-phase polymerization of aliphatic polyester prepolymer under a gas stream containing sulfonic acid catalyst. The method features preparing metal free aliphatic polyester with high molecular weight, good color and luster and perfect thermal stability efficiently. The non-metal-ion aliphatic polyester is not only applicable to common use, but is also suitable as high value-added medical material and packing material which contacts with food directly than other metal-containing polyester. 1. A solid-phase polymerization method of preparing high-molecular-weight (HMW) aliphatic polyester comprising carrying out solid-phase polymerization of aliphatic polyester prepolymer in a gas stream which contains sulfonic acid catalyst.2. The method according to claim 1 , wherein said sulfonic acid catalyst is one or multiple of monosulfonic acid of C1-C20 and monosulfonic acid of C1-C20 substituted by halogen.3. The method according to claim 1 , wherein during the solid-phase polymerization claim 1 , concentration Cg of said sulfonic acid catalyst in the gas stream is 0.0001 mmol/L to 1 mmol/L.4. The method according to claim 3 , wherein concentration Cg of said sulfonic acid catalyst in the gas stream is 0.0005 mmol/L to 0.2 mmol/L.5. The method according to claim 4 , wherein concentration Cg of said sulfonic acid catalyst in the gas stream is 0.001 mmol/L to 0.1 mmol/L.6. The method according to claim 1 , wherein during the solid-phase polymerization claim 1 , concentration Cp of sulfonic acid catalyst in aliphatic polyester prepolymer is 10 mmol/L to 350 mmol/L.7. The method according to claim 6 , wherein during the solid-phase polymerization claim 6 , concentration Cp of sulfonic acid catalyst in aliphatic polyester prepolymer is 20 mmol/L to 150 mmol/L.9. The method according to claim 1 , wherein linear velocity of the gas stream during solid-phase polymerization is 1 cm/s to ...

Degradable hyperbranched epoxy resin and preparation method thereof

Degradable hyperbranched epoxy resin and a preparation method thereof, wherein the preparation method comprises carrying out a reaction between a cyclotriazine compound and a carboxyl-sourced compound to prepare a carboxyl-terminated or hydroxy-terminated hyperbranched polymer; then reacting with epoxy chloropropane to obtain a degradable hyperbranched epoxy resin of which the molecular weight is about 1,900-22,000 g/mol. After the degradable hyperbranched epoxy resin is cured, a cyclotriazine structure can be completely degraded within 2 h in a phosphoric acid solution at the temperature of 80 ° C., thus realizing the recycle of the epoxy resin. The invention has simple process, and the product is degradable and has self-strengthening and self-toughening functions, and is expected to be used in the fields of strengthening and toughening of epoxy resins, solvent-free coatings etc.

METHOD FOR PRODUCING POLYESTER

A cyclic ester such as lactides and the like is mixed, in an organic solvent, with an alkyl aluminum compound such as trimethyl aluminum, triethyl aluminum and the like, and then, to the resulting mixture, at least one selected from the group consisting of an organic lithium ring-opening polymerization catalyst, an organic sodium ring-opening polymerization catalyst, an organic potassium ring-opening polymerization catalyst, an organic zinc ring-opening polymerization catalyst, an organic magnesium ring-opening polymerization catalyst, an organic tin ring-opening polymerization catalyst, an organic calcium ring-opening polymerization catalyst, an organic titanium ring-opening polymerization catalyst, and an amine ring-opening polymerization catalyst to allow ring-opening polymerization of the cyclic ester, thereby a polyester is obtained. 1. A method for producing polyester , the method comprising: {'br': None, 'sub': n', '3-n, 'RAl X'}, 'mixing, in an organic solvent, a cyclic ester with an alkyl aluminum compound represented by a formula [I]wherein, in the formula [I], n represents an integer from 1 to 3, R each independently represents a linear or branched C1-20 alkyl group, and X each independently represents a halogen atom or a hydrogen atom; and thenmixing the resulting mixture with at least one ring-opening polymerization catalyst selected from the group consisting of an organic lithium ring-opening polymerization catalyst, an organic sodium ring-opening polymerization catalyst, an organic potassium ring-opening polymerization catalyst, an organic zinc ring-opening polymerization catalyst, an organic magnesium ring-opening polymerization catalyst, an organic tin ring-opening polymerization catalyst, an organic calcium ring-opening polymerization catalyst, an organic titanium ring-opening polymerization catalyst, and an amine ring-opening polymerization catalyst to allow ring-opening polymerization of the cyclic ester.2. The method for producing polyester ...

PRODUCTION METHOD FOR ALIPHATIC POLYESTER

To efficiently produce an aliphatic polyester and to improve the thermal stability of the resulting aliphatic polyester. 1. A method of producing an aliphatic polyester comprising a step of subjecting a cyclic ester to ring-opening polymerization in the presence of a tin compound serving as a catalyst , a polymerization initiator , and a sulfonic acid compound serving as a co-catalyst.2. The method of producing an aliphatic polyester according to claim 1 , wherein the tin compound is at least one type selected from tin dichloride and tin octanoate.3. The method of producing an aliphatic polyester according to claim 1 , wherein the polymerization initiator is an alcohol.4. The method of producing an aliphatic polyester according to claim 1 , wherein the sulfonic acid compound is methane sulfonic acid or paratoluene sulfonic acid.5. The method of producing an aliphatic polyester according to claim 1 , wherein the cyclic ester is at least one type of glycolide or lactide. This application claims the benefit of Japanese Patent Application No. 2013-151493 filed Jul. 22, 2013, the disclosure of which is herein incorporated by reference in its entirety.The present invention relates to a method for efficiently producing an aliphatic polyester with improved thermal stability using ring-opening polymerization of a cyclic ester such as a glycolide.Aliphatic polyesters such as polyglycolic acid or polylactic acid are decomposed by water, microorganisms, or enzymes present in the natural world such as the ground or the sea and have therefore attracted attention as biodegradable polymer materials with a small environmental burden. In addition, since these aliphatic polyesters have biodegradable absorbent properties, they are also used as polymer materials for medical purposes such as surgical sutures or artificial skin. Among aliphatic polyesters, polyglycolic acid (hereafter called “PGA”) has a high melting point and can be melt-molded, and applications are therefore being ...

POLYGLYCOLIC ACID AND COPOLYMERS THEREOF FROM C1 FEEDSTOCKS

A method of preparing a poly(glycolic acid) (PGA) from the C1 feedstocks carbon monoxide and formaldehyde or its equivalent. By controlling the comonomer feed ratios and the polymerization temperatures, high quality PGA can be prepared. The method is extended to copolymers of PGA where alkylene oxides or cyclic ether comonomers are included into the polymerization mixture with the C1 monomers to yield polyester-ether thermoplastics. 1. A method of preparing a biorenewable polyglycolic acid (PGA) comprising:providing a pressure of carbon monoxide (CO);providing a solution of formaldehyde or a formaldehyde equivalent;mixing the solution with a strong Brønsted acid; and{'sub': 'a', 'copolymerizing the CO and the formaldehyde or formaldehyde equivalent at a temperature in excess of 100° C., wherein the Brønsted acid has a pKof less than −1.'}2. The method of claim 1 , wherein the formaldehyde equivalent is paraformaldehyde or trioxane.3. The method of claim 1 , wherein copolymerizing occurs at a pressure of 800 psi or greater.4. The method of claim 1 , wherein the strong Brønsted acid is trifluoromethane sulfonic acid (triflic acid) (TfOH).5. The method of claim 1 , wherein the solvent for the solution is methylene chloride.6. The method of claim 1 , wherein the temperature is in excess of 120° C.7. A method of preparing a biorenewable copolymer of PGA comprising:providing a pressure of carbon monoxide (CO);providing a solution of formaldehyde or a formaldehyde equivalent and a cyclic ether;mixing the solution with a strong Brønsted acid or a Lewis acid; and{'sub': 'a', 'polymerizing the formaldehyde or formaldehyde equivalent and the cyclic ether with the CO at a temperature equal to or greater than 100° C., wherein the Brønsted acid has a pKof less than −1.'}8. The method of claim 7 , wherein the cyclic ether is an alkylene oxide.9. The method of claim 8 , wherein the alkylene oxide is ethylene oxide claim 8 , propylene oxide claim 8 , 1 claim 8 ,2-butylene oxide ...

BIAXIALLY ORIENTED POLYESTER FILM

To provide a biaxially oriented polyester film that has extremely low content of antimony, excellent hygiene, few foreign substances, excellent transparency and heat resistance, and is excellent in printability, workability, and productivity. A biaxially oriented polyester film characterized by a content of antimony in the film of 10 ppm or less, a content of phosphorus in the film of 25 ppm or more and 75 ppm or less, an intrinsic viscosity of the film of 0.51 dl/g or more and 0.70 dl/g or less, and a number of defects with a size of 1 mm or more is 1.0 or less per 1000 square meters of the film. 1. A biaxially-oriented polyester film satisfying the following requirements (1) to (4):(1) a content of antimony in the film is 10 ppm or less;(2) a content of phosphorus in the film is 25 ppm or more and 75 ppm or less;(3) an intrinsic viscosity of the film is 0.51 dl/g or more and 0.70 dl/g or less; and(4) a number of defects with a size of 1 mm or more is 1.0 or less per 1000 square meters of the film.2. The polyester film according to claim 1 , wherein the polyester film is formed with a polyester resin as a polyester raw material containing at least one selected from aluminum compounds and at least one selected from phosphorus compounds as polymerization catalysts.3. The polyester film according to claim 1 , wherein the film has a haze of 1% or more and 8% or less.4. The polyester film according to claim 1 , wherein the film has a heat-shrinkage ratio in a longitudinal direction of 0.8% or more and 3% or less claim 1 , measured at 150° C. for 15 minutes.5. The polyester film according to claim 1 , wherein the film has a value of irregularity of thickness in each of a longitudinal direction and a transverse direction of 1% or more and 10% or less claim 1 , measured over a length of 1 m with a continuous contact-type thickness gauge.6. A packaging bag including one or more layers claim 1 , wherein at least one of the layer is the biaxially-oriented polyester film ...

PROCESS FOR PRODUCING A LOW VISCOSITY POLYESTER POLYOL

A process for producing a low viscosity polyester polyol includes the steps of: 1. A process for producing a low viscosity polyester polyol , comprising the steps of:(a) preparing a mixture which includes an aromatic diacid-based compound, an alkali metal ion-containing compound, and an aliphatic diol compound; and(b) subjecting the mixture to a reaction,wherein the alkali metal ion-containing compound has an alkali metal ion content of from 10 ppm to 12000 ppm based on a total weight of the mixture.2. The process according to claim 1 , wherein step (a) includes the sub-steps of:(a1) premixing the aromatic diacid-based compound with the alkali metal ion-containing compound to obtain a pre-mixture; and(a2) mixing the pre-mixture with the aliphatic diol compound to obtain the mixture.3. The process according to claim 1 , wherein the alkali metal ion-containing compound is selected from the group consisting of an alkali metal hydroxide claim 1 , an alkali metal salt claim 1 , and a combination thereof.4. The process according to claim 3 , wherein the alkali metal hydroxide is selected from the group consisting of sodium hydroxide claim 3 , potassium hydroxide claim 3 , and a combination thereof.5. The process according to claim 3 , wherein the alkali metal salt is selected from the group consisting of sodium carbonate claim 3 , sodium hydrocarbonate claim 3 , sodium chloride claim 3 , sodium sulfate claim 3 , potassium carbonate claim 3 , and combinations thereof.6. The process according to claim 1 , wherein the aromatic diacid-based compound is a benzenedicarboxylic acid-based compound.7. The process according to claim 6 , wherein the benzenedicarboxylic acid-based compound is selected from the group consisting of phthalic acid claim 6 , phthalic anhydride claim 6 , terephthalic acid claim 6 , isophthalic acid claim 6 , and combinations thereof.8. The process according to claim 1 , wherein the mixture further includes an aliphatic diacid-based compound selected from ...

IMPROVED RECYCLE-CONTENT POLYESTER POLYOLS

Polyester polyols made from recycled polyethylene terephthalate (rPET) and processes for making them are disclosed. The rPET is heated with a C-Cglycol reactant to give a digested intermediate comprising glycols and a terephthalate component, which comprises 45 to 70 wt. % of bis(hydroxyalkyl)terephthalates, and preferably lesser amounts of terephthalate dimers and trimers. Treatment of the digested intermediate with activated carbon gives a polyester polyol having a color index less than 20. The polyols have desirable hydroxyl numbers, viscosities, appearance, and other attributes for formulating polyurethane products and are a sustainable alternative to bio- or petrochemical-based polyols. 1. A polyester polyol made by a process which comprises:{'sub': 3', '10, '(a) heating a composition comprising recycled polyethylene terephthalate (rPET) with a C-Cglycol reactant to give a digested intermediate comprising glycols and a terephthalate component, wherein the terephthalate component comprises, by gel permeation chromatography using ultraviolet detection, 45 to 70 wt. % of bis(hydroxyalkyl)terephthalates; and'}(b) treating the digested intermediate with activated carbon under conditions effective to give the polyester polyol;{'sub': 3', '10, 'wherein the molar ratio of C-Cglycol reactant to rPET is at least 2.0, and the polyester polyol has a hydroxyl number within the range of 25 to 800 mg KOH/g and a color index less than 20, where color index is defined by 100×(|a*|/L*) as measured by CIE colorimetric analysis.'}2. The polyol of wherein the recycled polyethylene terephthalate comprises green rPET.3. The polyol of wherein the C-Cglycol reactant is selected from the group consisting of propylene glycol claim 1 , diethylene glycol claim 1 , triethylene glycol claim 1 , dipropylene glycol claim 1 , neopentyl glycol claim 1 , 2-methyl-1 claim 1 ,3-propanediol claim 1 , 1 claim 1 ,4-butanediol claim 1 , 1 claim 1 ,6-hexanediol claim 1 , 3-methyl-1 claim 1 ,5- ...

THERMOPLASTIC RESIN, OPTICAL FILM MADE THEREFROM, DIOL COMPOUND, DIESTER COMPOUND

A thermoplastic resin may have a structural unit of formula (1): 2. The thermoplastic resin of claim 1 , comprising the structural unit of formula (1) in an amount in a range of from 1 to 70 wt %.3. The thermoplastic resin of claim 1 , having an absolute value of a photoelastic coefficient of 20×10Paor less.4. The thermoplastic resin of claim 1 , having a glass transition temperature in a range of from 110 to 160° C.5. The thermoplastic resin of claim 1 , comprising at least one selected from the group consisting of a polycarbonate claim 1 , a polyester claim 1 , and a polyester carbonate.8. A transparent film claim 1 , comprising the resin of .9. A retardation film claim 8 , comprising the transparent film of claim 8 , stretched in at least one direction.10. The retardation film of claim 9 , wherein an R450/R550 ratio of a retardation at a wavelength of 450 nm (R450) and a retardation at a wavelength of 550 nm (R550) satisfies formula (I):{'br': None, 'i': R', 'R, '0.50≤450/550≤1.02\u2003\u2003(I).'}11. A circularly polarizing plate claim 9 , comprising the retardation film of . This application is a Continuation of International Application No. PCT/JP2020/024490 filed on Jun. 23, 2020, which claims priority to Japanese Patent Application No. 2019-116226 filed on Jun. 24, 2019. The entire contents of which are incorporated herein by reference.The present disclosure relates to a resin excellent in various properties such as optical property, heat resistance, and moldability; an optical film obtained by using the same; and a diol compound and a diester compound used for producing a resin.Recently, demands for optical transparent resins for use in optical systems such as optical lenses, optical films, and optical recording media have increased. Among them, various optical films have been developed and used for the purpose of improving contrast or tinting or enhancing display quality such as increase in viewing angle and prevention of external light reflection because ...

ONE-STEP, ONE-POT PROCESS FOR PREPARING MULTIBLOCK AND GRADIENT COPOLYMER

The present invention relates to the field of tailored di-, tri- and multi-block as well as gradient polyesters/polycarbonates copolymers prepared by introducing monomers simultaneously in the reaction medium in the presence of an organometallic, metal salt or organic catalyst. 1. A method , one-pot , one-step , for preparing block copolymers or gradient copolymers or statistical copolymers of ester/carbonate or carbonate1/carbonate2 by immortal ring-opening polymerisation in the presence of a catalyst system comprising a catalyst component selected from an organometallic component , or a Lewis acidic metal salt component or a metal free organic component or a combination thereof , and a protic source—typically an alcohol—in excess , acting as initiator and transfer agent , wherein comonomers , catalyst component , initiator and transfer agent are placed simultaneously in the same reactor and characterised in that the microstructure of the block copolymer is determined by the choice of catalyst system used.2. The method of wherein the organometallic catalyst system forms a PLLA-grad-PTMC polymer claim 1 , the Lewis acidic metal salt forms a PTMC-grad-PLLA copolymer and the metal-free organic catalyst forms a statistical copolymer.4. The method of wherein the monomers consist of one lactide and one cyclic carbonate.6. The method of wherein the organometallic catalyst component is selected from [BDI]Zn(N(SiMe)) claim 1 , {[BDI]Zn(OiPr)} claim 1 , Zn(N(SiMe)) claim 1 , ZnEt claim 1 , Ln(N(SiMe))(Ln=group III metals claim 1 , including the lanthanide series) claim 1 , “Ln(OiPr)” claim 1 , Ln(OCHCHOMe) claim 1 , Al(OiPr) claim 1 , Mg[N(SiMe)] claim 1 , Ca[N(SiMe)](THF) claim 1 , (BDI)Fe[N(SiMe)] claim 1 , Fe[N(SiMe)] claim 1 , and Fe[N(SiMe)].7. The method of wherein the catalyst system comprises a metallic salt selected from complexes of formula M(OSOCF) claim 1 , or of formula M(N(OSOCF)) claim 1 , or of formula M(RC(O)CRC(O)R) claim 1 , or of formula (R″CO)M claim 1 , ...

BLOCK COPOLYMER AND PROCESS FOR PREPARING THE SAME

The invention relates to a block copolymer comprising a first block of general structure formula (II) and a second block of general structure formula (III) wherein Rx is an organic group having a chain length of from 1-9 atoms; Ris an organic group having a chain length of from 10-38 atoms; nis at least 2; nis at least 2. The invention further relates to a method for preparing such block copolymer using as a catalyst a phenoxy-imine based catalyst having general structure of formula I. 2. A block copolymer according to wherein the copolymer is of the type selected from the group consisting of a:A-B di-block copolymer,A-B-A or B-A-B tri-block copolymer,{'sub': 'n', '(A-B)block copolymer wherein n is an integer and from 2-20,'}{'sub': 'n', '(B-A)block copolymer wherein n is an integer and from 2-20,'}{'sub': 'n', 'A(B-A)block copolymer wherein n is an integer and from 2 to 20, and'}{'sub': 'n', 'B(A-B)block copolymer wherein n is an integer and from 2 to 20'}wherein A represents a first block and B represents a second block.3. A block copolymer according to wherein said block copolymer is a linear block copolymer claim 1 , a star type block copolymer or a comb-type block copolymer.5. A block copolymer according to having a number average molecular weight Mof at least 2000 gram/mole claim 1 , as determined with High Temperature Size exclusion Chromatography performed at 160° C. using 1 claim 1 ,2 claim 1 ,4-trichlorobenzene as eluent at a flow rate of 1 mL/min and calculated with respect to polyethylene standards.6. A block copolymer according to having a polydispersity index claim 1 , defined as Mw/Mn claim 1 , of at most 3.7. A block copolymer according to wherein the first block is obtainable by the ring opening polymerisation of a first cyclic ester having a ring size of from 4-11 atoms and wherein the second block is obtainable by the ring opening polymerisation of a second cyclic ester having a ring size of from 12-40 atoms and wherein claim 1 , if present claim ...

POLYESTER RESIN COMPOSITION AND METHOD OF PRODUCING SAME

A polyester resin composition is excellent in heat resistance and hydrolysis resistance and results in a small amount of a gel composition and linear oligomers generated during a melt-molding step and a processing step. The polyester resin composition satisfies formulas (I) to (IV): 114.-. (canceled)15. A polyester resin composition , wherein formulas (I) to (IV) are satisfied:{'br': None, 'an amount of generated linear oligomers (weight ratio with respect to said polyester resin composition)<900 ppm\u2003\u2003(I)'}{'br': None, 'ΔCOOH/COOH≤2.0\u2003\u2003(II)'}{'br': None, '5 ppm≤Mn content (weight ratio with respect to said polyester resin composition)≤40 ppm\u2003\u2003(III), and'}{'br': None, '4 ppm≤Na content (weight ratio with respect to said polyester resin composition)≤40 ppm\u2003\u2003(IV)'}wherein ΔCOOH is an increased amount of COOH end groups (equivalent/ton) after a moist-heat treatment under saturated steam at 155° C. for 4 hours, and COOH is an amount of carboxyl end groups (equivalent/ton) in said polyester resin composition before said moist-heat treatment.16. The polyester resin composition according to claim 15 , wherein a total content of elements selected from nitrogen claim 15 , sulfur and a halogen (weight ratio with respect to said polyester resin composition) is less than 10 ppm.17. The polyester resin composition according to claim 15 , wherein a content of phosphorus element (weight ratio with respect to said polyester resin composition) is 17 ppm or more and 70 ppm or less.18. The polyester resin composition according to claim 15 , wherein Na/P claim 15 , which is a molar ratio of a content of sodium element to a content of phosphorus element claim 15 , is 0.3 or more and 1.2 or less.19. The polyester resin composition according to claim 15 , having a gelation ratio of 7 wt % or less.20. The polyester resin composition according to claim 15 , wherein said polyester is polyethylene terephthalate.21. A polyester film composed of the ...

METHOD FOR PREPARING A POLYESTER

The invention is directed to a method for preparing a polyester comprising providing a first cyclic ester having a ring size of from 12-40 atoms and subjecting the first cyclic ester to ring-opening polymerisation by contacting the first cyclic ester with a catalyst of formula I. 2. The method according to wherein metal M is selected from the group consisting of Ca claim 1 , Zn claim 1 , Al claim 1 , and Mg.3. The method according to wherein Ris a straight or branched aliphatic chain claim 1 , or cyclic or aromatic moiety claim 1 , that contains 1 to 30 carbon atoms claim 1 , optionally containing 1 to 10 heteroatoms selected from N claim 1 , O claim 1 , F claim 1 , Cl and Br.4. The method according to whereinX is N,{'sup': 5', '7', '8, 'R, Rand Rare hydrogen, and/or'}{'sup': 4', '6, 'Rand Rare independently selected from hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl, i-butyl, s-butyl, t-butyl, n-pentyl, i-pentyl, neopentyl, n-hexyl, 2,2-dimethylbutane, 2-methylpentane, 3-methylpentane, 2,3-dimethylbutane, cyclohexane, adamantyl, methoxide, ethoxide, n-butoxide, t-butoxide, aryloxide, and halides.'}5. The method according to wherein{'sup': '1', 'sub': 2', '2, 'Ris a —[CH—CH]— linking moiety,'}{'sup': 2', '3, 'Rand Rare hydrogen, and/or'}{'sup': 5', '7', '8, 'R, Rand Rare hydrogen, and/or'}{'sup': 4', '6, 'Rand Rare tert-butyl, and/or'}X is N, and/or{'sub': 3', '2, 'Z is ethyl or N(Si—CH).'}7. The method according to wherein the first cyclic ester is a lactone.8. The method according to any one or more of - further comprising providing a second cyclic ester having a second ring size from 4-40 claim 1 , and wherein both the first and second cyclic ester are subjected to said ring-opening polymerisation.9. The method according to wherein the polymerisation is carried out in one step.10. The method according to wherein the polyester is a random co-polyester.11. The method according to wherein the polymerisation is carried out in the presence of an initiator ...

LIQUID CRYSTAL POLYESTER RESIN COMPOSITION FOR ULTRA-THIN INJECTION AND MANUFACTURING METHOD THEREOF

The present disclosure relates to a liquid crystal polyester composition that can be injection molded into an ultra-thin film and has improved fluidity, and a manufacturing method thereof. The polyester resin composition for ultra-thin injection molding includes 60 to 85% by weight of a liquid crystal polyester resin and 15 to 40% by weight of an inorganic filler having an average cross-sectional aspect ratio of 2 to 6, based on the total weight of the composition, wherein the liquid crystal polyester resin includes 0.1 to 10 mol % of hydroxybenzoic acid (HBA), 40 to 60 mol % of hydroxynaphthoic acid, 20 to 30 mol % of biphenol, and 20 to 30 mol % of terephthalic acid. The liquid crystal polyester resin composition for ultra-thin injection molding according to the present disclosure not only has excellent mechanical strength and heat resistance, but also can exhibit very excellent fluidity in a high-speed injection process. 1. A liquid crystal polyester resin composition for ultra-thin injection molding , comprising 60 to 85% by weight of a liquid crystal polyester resin and 15 to 40% by weight of an inorganic filler having an average cross-sectional aspect ratio of 2 to 6.2. The liquid crystal polyester resin composition of claim 1 , wherein the liquid crystal polyester resin comprises 0.1 to 10 mol % of hydroxybenzoic acid (HBA) claim 1 , 40 to 60 mol % of hydroxynaphthoic acid claim 1 , 20 to 30 mol % of biphenol claim 1 , and 20 to 30 mol % of terephthalic acid.3. The liquid crystal polyester resin composition of claim 1 , wherein the liquid crystal polyester is a wholly aromatic liquid crystal polyester formed using only an aromatic compound as a monomeric material.4. The liquid crystal polyester resin composition of claim 1 , wherein the inorganic filler is at least one selected from the group consisting of flat glass fiber claim 1 , milled glass fiber claim 1 , carbon black claim 1 , graphite fiber claim 1 , silica fiber claim 1 , silica-alumina fiber claim 1 ...

METHOD AND CATALYST SYSTEM FOR PREPARING POLYMERS AND BLOCK COPOLYMERS

The present invention provides methods for producing block copolymers, either by the sequential addition of monomers, or using a “one-pot” method. The invention also relates to novel methods for producing polyesters by ring opening lactides and/or lactones and by copolymerising anhydrides and epoxides. 2. The method according to claim 1 , wherein the first monomer or combination of monomers is Group (i) claim 1 , and Z—R is -E-R claim 1 , the second monomer or combination of monomers is Group (ii) or Group (iii) and the second monomer or combination of monomers is added to the reaction after step a) has been performed.3. The method according to claim 1 , wherein the first monomer or combination of monomers is Group (ii) or Group (iii) claim 1 , the second monomer or combination of monomers is Group (i) claim 1 , and step b) is performed after step a) and before step c).4. The method according to claim 3 , wherein the second monomer or combination of monomers is added to the reaction with the first monomer or combination of monomers claim 3 , or after step a) has been performed.7. The method according to claim 1 , wherein the compound [Y] is a compound having a three claim 1 , four or five membered saturated ring and at least one heteroatom selected from O claim 1 , S or N claim 1 , preferably wherein the compound [Y] is an epoxide claim 1 , an aziridine claim 1 , an episulfide claim 1 , an oxetane claim 1 , a thietane claim 1 , an azetidine claim 1 , a saturated furan claim 1 , a saturated thiophene claim 1 , a pyrrolidine or a saturated four-membered carbon ring where two adjacent carbon atoms are replaced by —Y—C(Y)— claim 1 , wherein each Y is independently selected from O claim 1 , S or NR claim 1 , and wherein Ris H claim 1 , or optionally substituted aliphatic claim 1 , heteroaliphatic claim 1 , alicyclic claim 1 , heteroalicyclic claim 1 , aryl claim 1 , heteroaryl claim 1 , alkylaryl or alkylheteroaryl; more preferably wherein the compound [Y] is an epoxide. ...

PREPARATION METHOD OF POLYESTER RESIN

The present invention provides a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including isosorbide, a cyclohexanedimethanol, and the balance of other diol compounds. The polyester resin contains a zinc-based catalyst and a phosphorus-based stabilizer. The present invention also provides a method for preparing the polyester resin. The method includes: esterifying diol components including isosorbide, a cyclohexanedimethanol, and the balance of other diol compounds, with dicarboxylic acid components including terephthalic acid in the presence of an esterification reaction catalyst including a zinc compound; adding a phosphorus-based stabilizer to the esterification reaction mixture at the time when the degree of esterification reaches at least 80%; and subjecting the esterification reaction product to polycondensation. 1. A polyester resin comprising:moieties of dicarboxylic acid components comprising terephthalic acid; andmoieties of diol components comprising 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds,wherein the polyester resin contains 1 to 100 ppm of a zinc-based catalyst, in terms of the central metal atom content, based on the total amount of the resin, and 10 ppm to 300 ppm of a phosphorus-based stabilizer.2. The polyester resin according to claim 1 ,wherein the polyester resin has a Color b value of 3 or lower.3. The polyester resin according to claim 1 ,wherein the other diol compounds comprise at least one compound selected from the group consisting of aliphatic diol compounds and aromatic diol compounds.4. The polyester resin according to claim 1 ,wherein the phosphorus-based stabilizer comprises at least one compound selected from the group consisting of phosphoric acid, trimethyl phosphate, triethyl phosphate, triphenyl phosphate, and triethyl phosphonoacetate.5. The polyester resin according to claim ...

POLYESTER RESIN AND METHOD FOR PREPARING THE SAME

There is provided a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.0 dl/g and oxygen permeability of less than 20 cc*mm/(m*day*atm), as measured by ASTM D 3985, and There is also provided a method for preparing the polyester resin, including: esterifying diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, with dicarboxylic acid components including terephthalic acid in the presence of an esterification reaction catalyst including a zinc compound; adding a phosphorus-based stabilizer to the esterification reaction mixture at the time when the degree of esterification reaches at least 80%; and subjecting the esterification reaction product to polycondensation. 1. A polyester resin comprising:moieties of dicarboxylic acid components comprising terephthalic acid; andmoieties of diol components comprising 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds,{'sup': '2', 'wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.0 dl/g, and oxygen permeability of less than 20 cc*mm/(m*day*atm), as measured by ASTM D 3985.'}2. The polyester resin according to claim 1 ,wherein the polyester resin contains 1 to 100 ppm of a zinc-based catalyst, in terms of the central metal atom content, based on the total amount of the resin, and 10 ppm to 300 ppm of a phosphorus-based stabilizer.3. The polyester resin according to claim 1 ,wherein the other diol compounds comprise at least one compound selected from the group consisting of aliphatic diol compounds and aromatic diol compounds.4. The polyester resin according to claim 1 ,wherein the phosphorus-based ...

PROCESS FOR IMMORTAL RING-OPENING POLYMERISATION OF CYCLIC ESTERS AND CYCLIC CARBONATES

The present invention discloses new catalyst systems based on complexes of divalent metals supported by chelating phenoxy ligands for immortal ring-opening polymerisation of cyclic esters and cyclic carbonates. 17-. (canceled)9. The process of claim 8 , wherein an amount of the alcohol or the poly-ol is of from 1 to 10 claim 8 ,000 equivalents per the divalent metal.10. The process of claim 8 , wherein the system comprises the alcohol claim 8 , wherein the alcohol is R′OH claim 8 , and wherein R′ is a primary or secondary alkyl residue or benzylic group.12. The process of claim 8 , wherein the system comprises the alcohol claim 8 , wherein the alcohol is functionalized claim 8 , and wherein the ring-opening polymerisation is carried out in styrene in order to prepare end-functionalised polymers.13. The process of claim 12 , wherein the functionalised alcohol is selected from TEMPO-OH claim 12 , HEMA or hydroxy-alkoxyamines.14. The process of claim 12 , further comprising using the end-functionalised polymers to prepare in situ copolymers of lactide or TMC and styrene.15. Polymers or copolymers obtained by the process of .16. The polymers or copolymers of claim 15 , wherein the polymers or copolymers exhibit a unimodal molecular weight distribution ranging from 1.1 to 5.0.17. The polymers or copolymers of claim 15 , wherein the polymers or copolymers exhibit a number average molecular weight Mranging from 1 claim 15 ,000 to 1 claim 15 ,000 claim 15 ,000 g/mol.18. Copolymers obtained by the process of .20. The process of claim 8 , wherein the ring-opening polymerization is carried out in solution in an organic solvent.21. The process of claim 8 , wherein the ring-opening polymerization is carried out in melt in the absence of solvent.22. The process of claim 8 , wherein the ring-opening polymerization is carried out at a temperature ranging from 20° C. to 200° C.23. The process of claim 8 , wherein the ring-opening polymerization is carried out at a pressure ranging ...

Method of Copolymerizing Ethylene Carbonate with One or More Cyclic Esters

A process for copolymerizing selectively i) ethylene carbonate with ii) one or more cyclic esters can include contacting the ethylene carbonate with the one or more cyclic esters in the presence of a catalyst. The catalyst can be a Zn-complex with a diaminophenolate ligand (NNO) or a β-diiminate ligand (BDI). 2. The process according to claim 1 , wherein Rand Rare each independently Calkyl.3. The process according to claim 1 , wherein R claim 1 , Rand Rare each independently Calkyl.4. The process according to claim 1 , wherein Xis selected from Calkyl claim 1 , —OR claim 1 , or —N(SiR) claim 1 , Ris Calkyl claim 1 , and each Ris independently selected from hydrogen and Calkyl.5. The process according to claim 1 , wherein the one or more catalysts are selected from [(NNO)ZnEt] claim 1 , [BDI]Zn(N(SiMe)) claim 1 , [BDI]Zn(Et) and {[BDI]Zn(OR)}wherein Ris Calkyl.6. The process according to claim 1 , wherein the process is performed in the presence of a compound of formula (III) claim 1 , acting as a co-initiator and transfer agent of the polymerization claim 1 ,{'br': None, 'sup': '8', 'R—OH\u2003\u2003(III)'}{'sup': '8', 'sub': 1-20', '6-30', '6-30', '1-20', '1-6, 'wherein Ris selected from the group consisting of Calkyl, Caryl, and Caryl Calkyl optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, and Calkyl.'}7. The process according to claim 6 , wherein the compound of formula (III) is 1-octanol claim 6 , isopropanol claim 6 , propanediol claim 6 , trimethylolpropane claim 6 , 2-butanol claim 6 , 3-buten-2-ol claim 6 , 1 claim 6 ,3-butanediol claim 6 , 1 claim 6 ,4-butanediol claim 6 , 1 claim 6 ,6-hexanediol claim 6 , 1 claim 6 ,7-heptanediol claim 6 , benzyl alcohol claim 6 , 4-bromophenol claim 6 , 1 claim 6 ,4-benzenedimethanol claim 6 , and (4-trifluoromethyl)benzyl alcohol.8. The process according to claim 1 , wherein the one or more cyclic esters are selected from the group consisting of glycolide claim 1 ...

LAMINATE, CIRCUIT BOARD, AND LIQUID CRYSTAL POLYMER FILM APPLIED TO THE SAME

Provided are a laminate, a circuit board, and a liquid crystal polymer (LCP) film comprised therein. The laminate comprises a metal foil and an LCP film. The LCP film in the laminate has a dissipation factor before water absorption (Df′), a dissipation factor after water absorption (Df′), and a relative percentage difference between dissipation factors (ΔDf′), which is calculated by the following equation: 2. The laminate as claimed in claim 1 , wherein the ΔDf′ of the liquid crystal polymer film in the laminate is from 5% to 16%.3. The laminate as claimed in claim 1 , wherein the Df′of the liquid crystal polymer film in the laminate is from 0.0010 to 0.0030.4. The laminate as claimed in claim 1 , wherein the Df′of the liquid crystal polymer film in the laminate is from 0.0011 to 0.0065.5. The laminate as claimed in claim 1 , wherein hygroscopicity of the liquid crystal polymer film in the laminate is less than or equal to 1%.6. The laminate as claimed in claim 2 , wherein hygroscopicity of the liquid crystal polymer film in the laminate is less than or equal to 1%.7. The laminate as claimed in claim 1 , wherein the laminate has a peel strength before water absorption (F) and a peel strength after water absorption (F) claim 1 , wherein the Fand the Fare respectively measured before and after the laminate is soaked in pure water at 23° C. for 24 hours for water absorption claim 1 , and wherein Fis from 0.85 kN/m to 0.95 kN/m and Fis from 0.85 kN/m to 0.95 kN/m.9. The laminate as claimed in claim 1 , wherein the laminate further comprises another metal foil claim 1 , and the liquid crystal polymer film is sandwiched between the metal foil and said another metal foil.11. The liquid crystal polymer film as claimed in claim 10 , wherein the ΔDf of the liquid crystal polymer film is from 5% to 15%.12. The liquid crystal polymer film as claimed in claim 10 , wherein the Dfof the liquid crystal polymer film is from 0.0010 to 0.0030.13. The liquid crystal polymer film as ...

LIQUID CRYSTAL POLYMER FILM AND LAMINATE COMPRISING THE SAME

Provided are a liquid crystal polymer (LCP) film and a laminate comprising the same. The LCP film has a first surface and a second surface opposite each other, and a ratio of a ten-point mean roughness relative to a maximum height (Rz/Ry) of the first surface is from 0.30 to 0.62. By controlling Rz/Ry of at least one surface of the LCP film, the peel strength of the LCP film stacked to a metal foil can be increased, and the laminate comprising the same can still maintain the merit of low insertion loss. 1. A liquid crystal polymer film , comprising a first surface and a second surface opposite each other , and a ratio of a ten-point mean roughness relative to a maximum height of the first surface being more than or equal to 0.36 and less than or equal to 0.61.2. The liquid crystal polymer film as claimed in claim 1 , wherein an arithmetic average roughness of the first surface is less than or equal to 0.09 μm.3. The liquid crystal polymer film as claimed in claim 2 , wherein the arithmetic average roughness of the first surface is more than or equal to 0.02 μm and less than or equal to 0.08 μm.4. The liquid crystal polymer film as claimed in claim 1 , wherein the ten-point mean roughness of the first surface is less than or equal to 2 μm.5. The liquid crystal polymer film as claimed in claim 4 , wherein the ten-point mean roughness of the first surface is less than or equal to 1.5 μm.6. (canceled)7. The liquid crystal polymer film as claimed in claim 1 , wherein a ratio of a ten-point mean roughness relative to a maximum height of the second surface is more than or equal to 0.30 and less than or equal to 0.62.8. (canceled)9. (canceled)10. (canceled)11. The liquid crystal polymer film as claimed in claim 2 , wherein a ratio of a ten-point mean roughness relative to a maximum height of the second surface is more than or equal to 0.30 and less than or equal to 0.62.12. The liquid crystal polymer film as claimed in claim 3 , wherein a ratio of a ten-point mean roughness ...

POLYBUTYLENE TEREPHTHALATE COMPOSITION WITH IMPROVED HYDROLYTIC STABILITY

The present invention relates to a thermoplastic composition with improved hydrolytic stability, comprising: 30 to 50 percent by weight of a polybutylene terephthalate (PBT) having a carboxylic end group concentration (CEG) of 40 to 120 mmol/kg and an intrinsic viscosity of 0.63 to 0.68 dl/g as measured in a 60:40 phenol/tetrachloroethane; 0.01 to 0.1 percent by weight of a catalyst; 0.01 to 5 percent by weight of an epoxy chain extender; wherein all weight percents are based on the total weight of the composition. 2. The thermoplastic composition according to claim 1 , wherein the melt volume flow rate as measured by ISO 1133 at 250° C. with 5 kg load and 300 s dwell time of the thermoplastic composition when subjected to 80° C. and 70 percent room humidity after 500 hours is between 52 and 62 cm/10 min claim 1 , and the melt volume flow rate percent change compared to the initial melt volume flow rate of the thermoplastic composition is between 20 and 40 percent.4. The thermoplastic composition of claim 1 , wherein the polybutylene terephthalate (PBT) having an intrinsic viscosity of 0.63 to 0.68 dl/g as measured in a 60:40 phenol/tetrachloroethane has a CEG of 40 to 80 mmol/kg.5. The thermoplastic composition of claim 1 , further comprising 1 to 60 percent by weight of a reinforcing filler claim 1 , wherein the reinforcing filler is glass fiber.6. The thermoplastic composition of claim 5 , comprising 25 to 35 percent by weight of glass fiber.7. The thermoplastic composition of claim 1 , wherein the chain extender is selected from 3 claim 1 ,4-epoxycyclohexylmethyl-3′ claim 1 ,4′-epoxycyclohexane carboxylate.8. The thermoplastic composition of claim 7 , comprising 1.5 to 3 percent by weight of 3 claim 7 ,4-epoxycyclohexylmethyl-3′ claim 7 ,4′-epoxycyclohexane carboxylate.9. The thermoplastic composition of claim 1 , wherein the catalyst is sodium stearate. Disclosed are polyalkylene terephthalates compositions characterized by improved hydrolytic stability and ...

Graphene reinforced polyethylene terephthalate

A composition and a method are provided for graphene reinforced polyethylene terephthalate (PET). Graphene nanoplatelets comprising a suitable initial surface area are added to a solvent for producing PET. In some embodiments, the solvent comprises ethylene glycol. The solvent and graphene nanoplatelets are sonicated to disperse the nanoplatelets within the solvent. The solvent and graphene nanoplatelets are centrifuged to remove nanoplatelet agglomerates within the solvent. A supernatant solution of dispersed graphene nanoplatelets and solvent is decanted and then used for in-situ polymerization of the graphene reinforced PET comprising a continuous matrix of PET with a dispersed graphene reinforcement phase. The graphene reinforcements comprise a minimal number of layers of two-dimensional mono-atomic carbon sheets. In some embodiments, the number of layers ranges between 1 layer and 7 layers. The graphene reinforced PET preferably comprises a concentration of graphene nanoplatelets being less than substantially 2% weight fraction of the graphene reinforced PET.

POLYESTER RESIN AND METHOD FOR PREPARING THE SAME

There is provided a polyester resin including: moieties of dicarboxylic acid components including terephthalic acid; and moieties of diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.0 dl/g, and a melt viscosity of the polyester resin measured at a temperature of 280° C. and at a shear rate of 300 rad/s is at least 50% lower than that measured at a temperature of 280° C. and a shear rate of 1 rad/s, and there is also provided a method for preparing the polyester resin, including: esterifying diol components including 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds, with dicarboxylic acid components including terephthalic acid in the presence of an esterification reaction catalyst including a zinc compound; adding a phosphorus-based stabilizer to the esterification reaction mixture at the time when the degree of esterification reaches at least 80%; and subjecting the esterification reaction product to polycondensation. 1. A polyester resin comprising:moieties of dicarboxylic acid components comprising terephthalic acid; andmoieties of diol components comprising 5 to 60 mole % of isosorbide, 10 to 80 mole % of a cyclohexanedimethanol, and the balance of other diol compounds,wherein the polyester resin has an intrinsic viscosity of 0.5 to 1.0 dl/g, andthe melt viscosity of the polyester resin measured at a temperature of 280° C. and at a shear rate of 300 rad/s is at least 50% lower than that measured at a temperature of 280° C. and a shear rate of 1 rad/s.2. The polyester resin according to claim 1 ,wherein the polyester resin contains 1 to 100 ppm of a zinc-based catalyst, in terms of the central metal atom content, based on the total amount of the resin, and 10 ppm to 300 ppm of a phosphorus-based stabilizer.3. The polyester resin according to ...

METHOD OF REGIOSELECTIVE SYNTHESIS OF POLYESTERS FROM ASYMMETRIC DIOLS

The present invention belongs to the field of polymer synthesis. In particular, the present invention relates to a method for the synthesis of regioregular polyesters, wherein the polymer ordered structure provides them with advantageous physical-chemical properties, starting from asymmetric diols. More particularly, by the method of the present invention it is possible to obtain regioregular polyesters having high glass transition temperatures Tand crystalline properties. In the case in which the asymmetric diols are used in a pure enantiomeric form, with respect to the chiral carbon bound to the secondary hydroxyl, through the above-mentioned method it is possible to obtain regioregular and stereoregular polyesters, characterized by thermal and crystalline properties further ameliorative with respect to non-chiral regioregular polymers. 1. Method of synthesis of a regioregular polyester comprising the following steps:a) reacting under stirring an asymmetric diol comprising a primary alcohol function and a secondary alcohol function with a symmetric dicarboxylic acid, or a symmetric dicarboxylic acid ester, in the presence of an enzymatic catalyst belonging to the category of the lipases, thus obtaining a regioregular stable intermediate;b) reacting the regioregular stable intermediate obtained in step a) with a bifunctional acylating agent, thus obtaining the regioregular polyester.2. The method according to claim 1 , wherein said regioregular polyester has a regioregularity of at least 80%.3. The method according to claim 1 , wherein said regioregular stable intermediate in step a) has a regioregularity of at least 80%.4. The method according to claim 1 , wherein said regioregular stable intermediate in step a) has a regioregularity of 100% and each carboxylic function of said symmetric dicarboxylic acid claim 1 , or of said symmetric dicarboxylic ester claim 1 , is bound by ester bonds to the primary alcohol function of the asymmetric diol.7. The method ...

OXIDATIVELY CURABLE COATING COMPOSITION

The present invention relates to an oxidatively curable coating formulation comprising an oxidatively curable alkyd-based resin and unsymmetrically substituted 1,4,7-triazacyclononane-based chelant, which chelant may optionally be complexed with a suitable transition metal ion, particularly manganese. The formulations may be paints or other oxidatively curable coating compositions. The invention also provides methods for making such formulations and compositions resultant from the curing of such formulations. 2. The formulation of wherein Ris different to Rand Ris the same as R; and each of each of R-Ris the same and is hydrogen or Calkyl.3. The formulation of claim 2 , wherein Ris benzyl or Calkyl; Rand Rare both methyl; and each of R-Ris the same and is hydrogen.4. The formulation of claim 1 , which comprises a complex comprising the chelant and a transition metal ion selected from the group consisting of ions of manganese claim 1 , iron claim 1 , vanadium and copper.5. The formulation of wherein the transition metal ion is selected from ions of manganese.6. The formulation of claim 5 , wherein the complex is not isolated from the reaction medium in which it is prepared.7. The formulation of claim 3 , which formulation comprises less than 0.00005% by weight of ions of each of manganese claim 3 , iron claim 3 , cobalt claim 3 , vanadium and copper.8. A method of preparing a formulation as defined in claim 1 , the method comprising contacting a composition comprising an alkyd-based resin with a composition comprising a chelant of formula (I).9. The method of wherein the formulation is as defined in claim 1 , optionally wherein the method further comprises contacting the formulation with a source of manganese claim 1 , iron claim 1 , vanadium or copper ions.10. The method of claim 1 , wherein the composition comprising the chelant of formula (I) comprises a complex as defined in .11. The method of claim 10 , wherein the composition comprising the complex comprises a ...

A high-modulus low-shrinkage polyester industrial yarn and its preparation method

A high-modulus low-shrinkage polyester industrial yarn obtained by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The high-modulus low-shrinkage polyester industrial yarn has a dry heat shrinkage rate of 2.0±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The average value of the crystal volume VC of the high-modulus low-shrinkage polyester industrial yarn is larger than 230 mm3. The high-modulus low-shrinkage polyester industrial yarn has a fiber modulus of ≥100 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, which has a small thermal degradation coefficient. 1. A high-modulus low-shrinkage polyester industrial yarn , wherein the high-modulus low-shrinkage polyester industrial yarn is obtained by subjecting a polyester to dissolution , washing and solid state polycondensation followed by spinning , the high-modulus low-shrinkage polyester industrial yarn has a dry heat shrinkage rate of 2.0±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex , an average value of the crystal volume Vc of the high-modulus low-shrinkage polyester industrial yarn is larger than 230 mm , the high-modulus low-shrinkage polyester industrial yarn has a fiber modulus of ≥100 cN/dtexm , the polyester is obtained by esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation;wherein a carboxyl end group is less than 15 mol/t, a mass percentage of oligomer is lower than 0.5%, and a weight percentage of diethylene glycol is lower than 0.5%;{'sub': 2', '2', '2, 'wherein the molecular formula of magnesium ethylene glycol is Mg(OCHCHOH);'}wherein, during the dissolution and washing, the granulated sections are scoured and washed with water and a rinsing agent at 120-130° C. and 0.2-0.3 MPa.2. The yarn according to claim 1 , wherein a linear ...

An industrial polyester and its preparation method

A polyester obtained by the esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation. In the polyester sections, the carboxyl end group is less than 15 mol/t, the mass percentage of oligomer is lower than 0.5%, and weight percentage of diethylene glycol is lower than 0.5%. 1. An industrial polyester obtained by an esterification of terephthalic acid and ethylene glycol and polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation;wherein a carboxyl end group is less than 15 mol/t, a mass percentage of oligomer is lower than 0.5%, and a weight percentage of diethylene glycol is lower than 0.5%;{'sub': 2', '2', '2, 'wherein the molecular formula of magnesium ethylene glycol is Mg(OCHCHOH).'}2. The industrial polyester according to claim 1 , wherein an average molecular weight of the said industrial polyester is 15000 to 22000.3. The polyester according to claim 1 , wherein a mass ratio of magnesium ethylene glycol to antimony ethylene glycol in their mixture is 2 to 3:1.4. A process for preparing a polyester claim 1 , the process comprising: obtaining the polyester by the esterification of terephthalic acid and ethylene glycol; and polycondensation catalyzed by a mixture of magnesium ethylene glycol and antimony ethylene glycol; granulating to obtain a polyester section; performing dissolution and washing to obtain the polyester.6. The process for preparing the polyester according to claim 5 , wherein a molar ratio of the ethylene glycol to terephthalic acid is 1.2:1 to 2.0:1.7. The process for preparing the polyester according to claim 5 , wherein a mass ratio of magnesium ethylene glycol to antimony ethylene glycol in mixture is 2 to 3:1; a mass of the catalyst is 0.01-0.05% of the terephthalic acid; the stabilizer is selected from the group consisting of triphenyl phosphate ...

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 ...

An ultra-low shrinkage polyester industrial yarn and its preparation method

The present invention discloses an ultra-low shrinkage polyester industrial yarn and its preparation method. The ultra-low shrinkage polyester industrial yarn is prepared by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The ultra-low shrinkage polyester industrial yarn has a dry heat shrinkage rate of 1.8±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, has a small thermal degradation coefficient. The present invention reduces oligomers during polymerization, reduces thermal degradation during processing, and as a result the invention greatly reduces impurities and nucleating agent in the polyester, leading to an increase in the probability of homogeneous nucleation based on the reduction of heterogeneous nucleation. The dissolution and washing of polyester further decreases oligomer content, facilitating the growth of the grain size and the optimization of crystal perfection in the ultra-low shrinkage polyester industrial yarn. 1. An ultra-low shrinkage industrial yarn having a dry heat shrinkage rate of 1.8±0:25% , under the testing condition of 177° C.×10 min×0.05 cN/dtex wherein the ultra-low shrinkage industrial yarn is obtained by the following process: subjecting the polyester to dissolution , washing and solid state tackifying followed by spinning , esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation ,wherein the carboxyl end group is less than 15 mol/t, the mass percentage of oligomer is lower than 0.5%, and weight percentage of diethylene glycol is lower than 0.5%;{'sub': 2', '2', '2, 'wherein the molecular formula of magnesium ethylene glycol is Mg(OCHCHOH);'}wherein the dissolution and washing refers to that the granulated slices are scoured and washed with ...

A low chromatic aberration polyester different-shrinkage composite yarn and its preparation method

A low chromatic aberration polyester different-shrinkage composite yarn is made of polyester POY yarn and polyester FDY composite yarn. The polyester POY yarn and polyester FDY yarn is obtained by spinning the polyester solution, the rupture strength of the low color polyester different-shrinkage composite yarn is ≥1.9 cN/dtex, the elongation at break is 30.0±5.0%, the crimp shrinkage is 2.50±3.0%, the network degree is 20±5/m, the color difference ΔE is less than 0.200. In the invention, the magnesium ethylene glycol is relatively mild, the thermal degradation coefficient is small, the oligomers in the polymerization process is reduced, and the oligomers in the dissolution process are further reduced, so that the appearance of stains and streaks reduces during the dyeing and post-processing heat setting of the polyester fiber, which ensures the fiber's leveling and rubbing fastness.

Accelerated Curing of Unsaturated Polymer Resins

The invention relates to the cold curing and warm curing of unsaturated polyester resins, such as polyester resins and methyl methacrylate resins using mercaptans as reaction accelerators. 1. Method for curing an unsaturated polymer resin , comprising radical polymerisation of the unsaturated polymer resin with one or more copolymerisable monomers in the absence of heavy metals and heavy-metal salts , wherein an initiator system is used that comprises one or more organic peroxides and one or more mercaptans.2. Method according to claim 1 , wherein the radical polymerisation is carried out in the absence of tertiary amines claim 1 , preferably in the absence of amines.3. Method according to claim 1 , wherein the unsaturated polymer resin is selected from unsaturated polyester resins (UP resins) claim 1 , methyl methacrylate resins and vinyl ester resins.4. Method according to either or claim 1 , wherein the unsaturated polymer resin comprises an orthophthalic-acid-based UP resin.5. Method according to any of the preceding claims claim 1 , wherein the radical polymerisation is carried out in the absence of metals and metal salts.6. Method according to any of the preceding claims claim 1 , wherein the mercaptan is selected from glycol dimercaptoacetate (GDMA) claim 1 , pentaerythritol-3-mercaptopropionate (PETMP) claim 1 , isooctyl thioglycolate (IOTG) and combinations thereof.7. Method according to any of the preceding claims claim 1 , wherein the copolymerisable monomers are selected from styrene claim 1 , α-methyl styrene and methyl methacrylate.8. Method according to any of the preceding claims claim 1 , wherein the organic peroxide is selected from cumyl hydroperoxide (CUHP) claim 1 , dicumyl peroxide (DCUP) claim 1 , tert-butylperoxy-2-ethylhexanoate (TBPEH) claim 1 , tert-butyl peroxy-3 claim 1 ,5 claim 1 ,5-trimethylhexanoate (TBPIN) claim 1 , optionally in solution with acetylacetone claim 1 , tert-butyl peroxybenzoate (TBPB) claim 1 , optionally in solution ...

PHOTOSENSITIZATION OF PERSULFATE FOR PHOTO-INDUCED POLYMERIZATION

The present invention relates to compositions and processes for photoinitiating polymerization. Process for photoinitiating polymerization with ‘persulfate anion’ via photosensitized decomposition of persulfate anion with a composition that includes a light absorber, an electron transfer donor or acceptor, and a persulfate are described. 1. A photosensitive composition comprising:a light absorber;an electron transfer donor or acceptor; anda composition containing a persulfate.2. The composition of wherein the electron transfer donor is oxidized by the excited state of the light absorber.3. The composition of wherein the electron transfer acceptor is reduced by the excited state of the light absorber.4. The composition of wherein the persulfate is represented by the formula Xpersulfate claim 1 , wherein Xis a metal or an organic cation or cationic dye claim 1 , and i is 1 when the valence of X is 2 and i is 2 when the valence of X is 1.5. The composition of wherein X is a metal cation.6. The composition of wherein the metal cation is selected from the group of Na claim 5 , K claim 5 , Li claim 5 , Cs claim 5 , and Ru cations.7. The composition of wherein X is an organic cation selected from the group of NR and PR where R is an alkyl group or an aryl group and the R's in a cation can be the same or different.8. The composition of wherein X is a cationic dye.9. The composition of wherein the cation is selected from the group of SR claim 7 , OR and IR where R is an alkyl group or an aryl group and the R's in a cation can be the same or different.10. A photosensitive composition comprising:a salt of a cationic dye and a persulfate; andan electron transfer donor.11. The composition of wherein the salt is Methylene Blue persulfate.12. The composition of wherein the cationic dye is a cyanine dye.13. A photosensitive composition comprising:a light absorbing hydrogen atom abstractora hydrogen atom donorand a composition containing a persulfate.14. The composition of wherein ...

ORIENTED FILMS AND SHRINK FILMS COMPRISING POLYESTERS WHICH COMPRISE TETRAMETHYLCYCLOBUTANEDIOL AND ETHYLENE GLYCOL

This invention relates to an oriented film or a shrink film comprising a polyester composition comprising: (1) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 29 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) about 71 to about 90 mole % ethylene glycol residues; and (iii) optionally, diethylene glycol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.50 to 0.8 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; wherein the polyester has a Tg of from 80° C. to 105° C. or of from 80° C. to 100° C. as determined using a TA DSC 2920 from Thermal Analyst Instrument at a scan rate of 20° C./min.; and (2) optionally, wherein the polyester composition comprises at least one plasticizer. 3. The film of wherein said polyester comprises about 15 to about 28 mole % 2 claim 2 ,2 claim 2 ,4 claim 2 ,4-tetramethyl-1 claim 2 ,3-cyclobutanediol residues and 72 to 85 mole % ethylene glycol residues.4. The film of wherein said at least one polyester comprises a catalyst/stabilizer component which comprises: (i) titanium atoms in the range of 10-50 ppm based on total polymer weight claim 1 , and (ii) phosphorus atoms in the range of 10-200 ppm based on total polymer weight.5. The film of wherein said at least one polyester comprises manganese atoms in the range of 10-100 ppm based on total polymer weight claim 4 ,6. The film of claim 4 , wherein the catalyst/stabilizer component comprises tin atoms in the range of 0-5 ppm based on total polymer weight.7. The film of or claim 4 , ...

POLYESTER RESIN, COATING AGENT, ADHESIVE, RESIN COMPOSITION, INK, AND METHOD FOR PRODUCING POLYESTER RESIN

Provided is a polyester resin having excellent adhesiveness and excellent grindability. One aspect of the polyester resin of the present invention is a polyester resin including a constitutional unit A derived from a carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups and a constitutional unit derived from a dicarboxylic acid, in which the constitutional unit A has a content of 0.01 parts by mole or more and 45 parts by mole or less with respect to 100 parts by mole of the constitutional unit derived from a dicarboxylic acid. 1. A polyester resin comprising:a constitutional unit A derived from a carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups; anda constitutional unit derived from a dicarboxylic acid,wherein the constitutional unit A has a content of 0.01 parts by mole or more and 45 parts by mole or less with respect to 100 parts by mole of the constitutional unit derived from a dicarboxylic acid.2. The polyester resin according to claim 1 , wherein the polyester resin has a weight average molecular weight (Mw) of 10000 or more claim 1 , as measured by GPC.3. The polyester resin according to claim 1 , wherein the carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups is at least one selected from the group consisting of benzenepentacarboxylic acid claim 1 , cyclohexanehexacarboxylic acid and mellitic acid.4. The polyester resin according to claim 1 , wherein the polyester resin has a color b value of 2 or less claim 1 , as measured by spectrophotometric colorimetry.5. A polyester resin comprising:a constitutional unit A derived from a carboxylic acid having a cyclic structure and containing 5 or more carboxyl groups; anda constitutional unit derived from a dicarboxylic acid,wherein the polyester resin has a color b value of 2 or less, as measured by spectrophotometric colorimetry.6. A coating agent comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the polyester ...

Soil Release Polyesters For Use In Detergent Compositions

The invention relates to a polyester comprising two or more of the structural units (a1), one or more of the structural units (a2) and either one or two of the terminal groups (a3) 2. The polyester according to claim 1 , wherein q is 03. The polyester according to claim 1 , wherein Ris methyl.4. The polyester according to claim 1 , wherein Gis (OCH) and/or (OCH).5. The polyester according to claim 1 , wherein the terminal groups (a3) claim 1 , based on the total weight of the polyester claim 1 , comprise at least 50 wt. %.6. The polyester according to claim 1 , wherein the weight average molecular weight (M) is from 6000 to 20000 g/mol.7. The polyester according to claim 1 , wherein the average number of structural units (a1) is from 2 to 60.8. The polyester according to claim 1 , wherein the total amount of structural units (a1) and (a2) and of the terminal group (a3) claim 1 , based on the total weight of the polyester claim 1 , is at least 50 wt. %.9. The polyester according to claim 1 , wherein the polyester has a melting point of at least 50 C.10. The polyester according to claim 1 , wherein the polyester has a flow factor claim 1 , of at least 10.11. The polyester according to claim 1 , wherein the polyester consists of structural units selected from the group consisting of structural units (a1) and (a2) and the respective terminal groups.12. The polyester according to claim 1 , comprising one or more structural units (a1′) claim 1 ,{'br': None, '—C(═O)-A-C(═O)—\u2003\u2003(a1′)'}where A is derived from a dicarboxylic acid different from terephthalic acid.14. (canceled)15. (canceled)16. A solid or liquid detergent composition claim 1 , comprising a) one or more polyesters according to and b) one or more surfactants.17. The composition according to claim 16 , wherein the one or more polyesters a) are present in an amount of at least 0.1 wt.-% claim 16 , based on the total weight of the detergent composition.18. The composition according to claim 16 , wherein ...

ALIPHATIC POLYCARBONATE WITH LONG-CHAIN BRANCHES AND AROMATIC COPOLYESTER THEREOF

Provided is an aliphatic polycarbonate-co-aromatic polyester with long-chain branches. The copolymer includes repeating units represented by —OAO— and Z(O—), which are linked via carbonyl (—C(O)—) and —C(O)YC(O)— as linkers. Also provided is an aliphatic copolycarbonate including repeating units represented by —OAO— and Z(O—), which are linked via carbonyl (—C(O)—) linkers. The aliphatic copolycarbonate has a weight average molecular weight of 30,000 or more. 1. An aliphatic polycarbonate-co-aromatic polyester comprising repeating units represented by —OAO— and Z(O—)linked via carbonyl (—C(O)—) and —C(O)YC(O)— as linkers wherein A is selected from substituted or unsubstituted C-Calkylene groups and combinations thereof , a is an integer equal to or greater than 3 , Z is an a-valent substituted or unsubstituted C-Cradical , and Y is selected from substituted or unsubstituted C-Carylenes , substituted or unsubstituted C-Cheteroarylenes , and combinations thereof.4. The aliphatic polycarbonate-co-aromatic polyester according to claim 3 , wherein the linkers —C(O)YC(O)— are present in an amount of 30 to 50 mol % claim 3 , based on the moles of the repeating units —OAO— and the repeating units Z(O—)are present in an amount of 0.1 to 0.5 mol % claim 3 , based on the moles of the repeating units —OAO—.5. An aliphatic polycarbonate comprising repeating units represented by —OAO— and Z(O—)linked via carbonyl (—C(O)—) linkers and having a weight average molecular weight of 30 claim 3 ,000 or more wherein A is selected from substituted or unsubstituted C-Calkylene groups and combinations thereof claim 3 , a is an integer equal to or greater than 3 claim 3 , Z is an a-valent substituted or unsubstituted C-Cradical claim 3 , and Y is selected from substituted or unsubstituted C-Carylenes claim 3 , substituted or unsubstituted C-Cheteroarylenes claim 3 , and combinations thereof.8. The aliphatic polycarbonate according to claim 7 , wherein the amount of the Z(O—)is from 0.1 to 0. ...

METHODS FOR PREPARATION OF POLYESTER OLIGOMER VIA BASE CATALYSIS

The invention relates to methods and systems for preparing macrocyclic polyester oligomer (MPO) via base catalysis. It is found that base catalysts are effective in the production of MPO, and they reduce the potential for undesired byproducts such as furans (e.g., THF) and acetaldehyde, which result from diol side reactions. 1. A method for preparing a macrocyclic polyester oligomer (MPO) , the method comprising: (i) an alcohol, phenol, or both;', '(ii) a terephthalate (e.g., DMT or DPT) or, alternatively or additionally, a terephthalate precursor (e.g., TPA);', '(iii) a base catalyst (e.g., an organic base); and', '(iv) an organic solvent (different from the species in (i), (ii), and (iii) above), thereby forming MPO and polyester linears; and, '(a) heating a reaction mixture, the reaction mixture comprising(b) separating the MPO from the reaction mixture.2. The method of claim 1 , wherein the MPO precipitates (e.g. claim 1 , crystallizes) out of the reaction mixture at a different temperature than the polyester linears claim 1 , and step (b) comprises maintaining the reaction mixture within a temperature range in which the polyester linears substantially precipitate out of the reaction mixture (e.g. claim 1 , at least about 80 wt. % of the polyester linears in solution precipitate out) but in which the MPO substantially does not precipitate out of the reaction mixture (e.g. claim 1 , at least about 80 wt. % of the MPO in solution stays in solution).3. The method of claim 2 , wherein a substantial portion of the base catalyst associates with (e.g. claim 2 , adsorbs to claim 2 , binds to claim 2 , attaches to) the polyester linears claim 2 , and step (b) comprises maintaining the reaction mixture temperature within a temperature range such that the polyester linears with the substantial portion of the base associated therewith substantially precipitate out of the reaction mixture claim 2 , while the MPO substantially does not precipitate out of the reaction mixture. ...

Retardation film and method for producing the same

Provided are a retardation film that has a high heat resistance, has excellent formability and handleability even in a single-layer structure, has a negative thickness-direction retardation Rth value, and is suitable as a negative A-plate or a positive C-plate and a method for producing the film. The retardation film is formed of a stretched film of a polyester resin, contains a unit (A1) represented by the formula (1) as a diol unit (A) and a unit (B1) represented by the formula (2a) or (2b) as a dicarboxylic acid unit (B), and is a negative A-plate or a positive C-plate.In the formulae, Z1 and Z2 represent an aromatic hydrocarbon ring, R1, R2a, R2b, R3a and R3b represent a substituent, k, p1 and p2 denotes an integer of 0 to 8, q denotes an integer of 0 to 4, m1, m2, n1 and n2 denotes an integer of not less than 0, A1a and A1b represents an alkylene group, and A2a, A2b and A3 represents a divalent hydrocarbon group.

NEW PHENOLIC POLYMERS AND PREPARATION PROCESSES THEREOF

The present invention concerns the use of a compound having the following formula (I), for the preparation of a polymer. The present invention also concerns the polymers obtained from polymerization of compound of formula (I), and their processes of preparation. 2. A compound susceptible to be obtained by polymerization of the compound of formula (I) as defined in claim 1 , and of a monomer chosen from the group consisting of: diacids claim 1 , diesters claim 1 , diamines claim 1 , and epoxy compounds.6. The process of claim 5 , wherein the polymerization step is carried out in the presence of a catalyst chosen from the group consisting of: 5 claim 5 ,7-triazabicyclo[4.4.0]dec-5-ene (TBD) claim 5 , zinc acetate (ZnAc) claim 5 , Ti(OBu) claim 5 , dibutyl tin oxide (DBTO) claim 5 , and mixtures thereof.9. The process of claim 8 , wherein the polymerization step is carried out in the presence of a catalyst chosen from the group consisting of: 5 claim 8 ,7-triazabicyclo[4.4.0]dec-5-ene (TBD) claim 8 , zinc acetate (ZnAc) claim 8 , Ti(OBu) claim 8 , dibutyl tin oxide (DBTO) claim 8 , and mixtures thereof.15. The process of claim 14 , wherein the polymerization step is carried out in the presence of a Grubbs catalyst. The present invention concerns the use of specific phenolic monomers for the preparation of polymers.The present invention also relates to new phenolic polymers, in particular polyesters, polyamides, epoxy resins and unsaturated polyesters, and preparation processes thereof.Aromatic compounds constitute basic chemicals to manufacture everyday life items. Indeed, they play a key role in pharmaceutical, perfumes, dyestuff and polymer industries. In plastic industry, aromatic units offer rigidity, hydrophobicity and fire resistance to the derived polymers. Aromatic polyesters, such as polyalkyleneterephtalate are widely commercially used, especially in food packaging and textile field due to their good thermomechanical properties. Aromatic polyamides, such as ...

POLY(DIHYDROFERULIC ACID) A BIORENEWABLE POLYETHYLENE TEREPHTHALATE MIMIC DERIVED FROM LIGNIN AND ACETIC ACID AND COPOLYMERS THEREOF

An embodiment of the invention is directed to a biorenewable thermoplastic, poly(dihydroferulic acid) (PHFA), which is an effective polyethylene terephthalate (PET) mimic. In another embodiment of the invention, a biorenewable thermoplastic copolymer, poly(dihydroferulic acid-co-ferulic acid) is an effective polystyrene mimic. The PHFA and the copolymer can be prepared by the homocondensation of acetyldihydroferulic acid or the copolymerization of acetyldihydroferulic acid with acetylferulic acid, which are monomers that can be synthesized from starting materials isolated from lignin, rice bran, or other biorenewable sources. 1. A biorenewable thermoplastic homopolymer comprising poly(dihydroferulic acid).2. The biorenewable thermoplastic homopolymer of claim 1 , wherein the poly(dihydroferulic acid) has at least one acetoxy end-group.3. A method of preparing poly(dihydroferulic acid) comprising:providing acetyldihydroferulic acid and a catalyst; andpolymerizing the acetyldihydroferulic acid to a poly(dihydroferulic acid) with the liberation of acetic acid.4. The method of claim 3 , wherein the acetyldihydroferulic acid is derived from one or more biorenewable sources.5. The method of claim 4 , wherein the biorenewable source is lignin or rice bran.6. The method of claim 3 , wherein the catalyst comprises an oxide claim 3 , alkoxide or acetate of Sb claim 3 , Ti claim 3 , Ge claim 3 , Hg claim 3 , Si claim 3 , Zr claim 3 , Al claim 3 , or Zn.7. The method of claim 6 , wherein the catalyst is Zn(OAc).8. The method of claim 3 , wherein polymerizing is carried out under vacuum.9. The method of claim 3 , wherein polymerizing is carried out at a temperature of 200 to 300° C.11. The aromatic/aliphatic thermoplastic homopolymer of claim 10 , wherein the polymer is poly(3-(4-hydroxy-3 claim 10 ,5-dimethoxyphenyl)propanoic acid).12. The aromatic/aliphatic thermoplastic homopolymer of claim 10 , wherein the polymer has at least one acetoxy end unit.14. The method of claim 13 ...

Process to Prepare a Polyester Polymer Composition Comprising a Polyester Polymer Having Furanic Units and a Polyester Polymer Composition Obtainable Thereby and the Use Thereof

A polyester polymer composition having a polyester polymer with furanic units as well as a process to prepare this polyester polymer composition are herein described. The process includes the step of reacting a cyclic polyester oligomer in the presence of a catalyst in a ring-opening polymerization reaction with a reaction temperature and a reaction time sufficient to yield a polyester polymer having furanic units. The present invention further provides a method of use of this polyester polymer composition in extrusion, injection molding, or blow molding.

POLYMERS AND METHODS OF PRODUCING THEREOF

Provided herein are methods of producing polymers from furan and optionally diol compounds, using an organocatalyst. The furan compounds may include, for example, 2,5-furandicarboxylic acid or 2,5-tetrahydrofurandicarboxylic acid. Provided herein are also polymer compositions, such as poly(alkylene-2,5-furandicarboxylate). The polymer compositions herein have a low metal content. 1. A composition comprising a polymer with a polymer backbone , wherein the polymer backbone comprises an optionally substituted furandicarboxylate moiety or an optionally substituted tetrahydrofurandicarboxylate moiety ,wherein the composition is free from metal catalysts or residues thereof; andwherein the composition has an number average molecular weight of at least 10,000 Da.2. A composition comprising a polymer with a polymer backbone , wherein the polymer backbone comprises an optionally substituted furandicarboxylate moiety or an optionally substituted tetrahydrofurandicarboxylate moiety ,wherein the composition has a metal content that does not come from metal catalysts used to produce the polymer or precursors thereof.3. The composition of claim 1 , wherein the metal catalysts are transesterification catalysts.4. A composition comprising a polymer with a polymer backbone claim 1 , wherein the polymer backbone comprises an optionally substituted furandicarboxylate moiety or an optionally substituted tetrahydrofurandicarboxylate moiety claim 1 ,wherein the composition is free from metal catalysts or residues thereof;wherein the composition has an number average molecular weight of at least 10,000 Da; andwherein the composition has a total metal content of less than 0.1 wt %.5. The composition of claim 4 , wherein the total metal content includes the content of transition metals claim 4 , post-transition metals claim 4 , metalloids claim 4 , or lanthanoid metals claim 4 , or any combinations thereof.6. The method of claim 4 , wherein the total metal content excludes the content of ...

METAL ALKOXIDE COMPLEX, CATALYST COMPOSITION, AND PRODUCTION METHOD OF POLYCAPROLACTONE OR POLYLACTIDE

The invention provides a metal alkoxide complex of Formula (I), wherein X, M, R1, R2, R3, m, n, y and z are as defined in the Description. The invention also provides a catalyst composition comprising the metal alkoxide complex and a hydroxy-containing compound, wherein the molar ratio of the metal alkoxide complex to the hydroxy-containing compound is 1:01-1000. The invention also provides a production method of poly-ε- caprolactone or polyactide, wherein an ε-caprolactone monomer or a lactide monomer is reacted in the presence of the metal alkoxide complex or catalyst composition to obtain poly-ε-caprolactone or polylactide. The metal alkoxide complex and the catalyst composition thereof can be used to catalyze the synthesis of poly-ε- caprolactone or polylactide with a high efficiency. The molecular weight of polycaprolactone or polylactide can be controlled by the molar ratio of the metal alkoxide complex and the hydroxy-containing compound, and is adjustable in the range of 1000-600,000, and wherein the molecular weight distribution is from 1.03 to 1.50. 1. A metal alkoxide complex having a molecular formula represented by Formula (I):{'br': None, 'sub': 0-2', '1', '2', '3', '1-3', '1-6', '0-4, '[XM(OCRRR)]·(organic solvent)\u2003\u2003(I);'}in Formula (I), M is calcium, magnesium, strontium, barium or aluminum;{'sub': 1', '2', '3', '1', '2', '3, 'R, Rand Rare independently selected from hydrogen, chain alkyl, phenyl, substituted phenyl, arylalkyl, substituted arylalkyl, wherein if one of R, Rand Ris hydrogen or chain alkyl, at least one of the other two substituents has to be phenyl, substituted phenyl, arylalkyl or substituted arylalkyl;'}X is hydrogen, C1-C30 chain alkyl, amino or halogen.2. The metal alkoxide complex according to claim 1 , characterized in that said M is magnesium or aluminum.3. The metal alkoxide complex according to claim 1 , characterized in that said R claim 1 , Rand Rindependently are hydrogen claim 1 , methyl claim 1 , phenyl claim 1 ...

MEDICAL PACKAGING CONTAINER

Provided are a medical packaging container having a polyester resin (A1) including diol units and dicarboxylic units, the diol units including at least one diol unit in an amount of 1 to 30 mol % selected from diol units having a bridged alicyclic skeleton derived from a compound represented by formula (1), formula (2), or formula (3), the dicarboxylic acid units including dicarboxylic acid units having a naphthalene skeleton in an amount of 70 mol % or more; and a manufacturing method of the polyester for the container. 2. The medical packaging container according to claim 1 , wherein the diol units comprise at least one diol unit in an amount of 1 to 30 mol % selected from diol units having a bridged alicyclic skeleton derived from a compound represented by the formula (1) or the formula (2).3. The medical packaging container according to claim 1 , wherein the diol units comprise diol units having a bridged alicyclic skeleton derived from a compound represented by the formula (1) in an amount of 1 to 30 mol %.4. The medical packaging container according to claim 1 , wherein the dicarboxylic acid units having a naphthalene skeleton are derived from at least one dicarboxylic acid unit selected from the group consisting of 1 claim 1 ,3-naphthalenedicarboxylic acid claim 1 , 1 claim 1 ,4-naphthalenedicarboxylic acid claim 1 , 1 claim 1 ,5-naphthalenedicarboxylic acid claim 1 , 2 claim 1 ,6-naphthalenedicarboxylic acid claim 1 , and 2 claim 1 ,7-naphthalenedicarboxylic acid.5. The medical packaging container according to claim 1 , wherein the dicarboxylic acid units comprise the dicarboxylic acid units having a naphthalene skeleton in an amount of 90 mol % or more.6. The medical packaging container according to claim 1 , wherein the diol units comprise diol units derived from ethylene glycol.7. The medical packaging container according to claim 1 , wherein the polyester resin (A1) has all of the following properties (i) to (iii):(i) a glass transition temperature of ...

METHOD FOR MANUFACTURING GLYCOL-MODIFIED POLY ETHYLENE TEREPHTHALATE COPOLYMERS AND APPLICATIONS THEREOF

The present invention describes a manufacturing method for a glycol-modified polyethylene terephthalate and an application for which. The manufacturing method includes the following steps. A reaction mixture is provided. The reaction mixture includes terephthalic acid, ethylene glycol, 1,4-cyclohexanedimethanol and an aqueous titanium-based catalyst. An esterification reaction and a polycondensation reaction is performed to the reaction mixture to obtain the glycol-modified polyethylene terephthalate. 1. A manufacturing method for a glycol-modified polyethylene terephthalate , comprising:providing a reaction mixture comprising terephthalic acid, ethylene glycol, 1,4-cycohexanedimethanol and an aqueous titanium-based catalyst; andperforming an esterification reaction and a polycondensation reaction to the reaction mixture to obtain the glycol-modified polyethylene terephthalate.2. The manufacturing method for the glycol-modified polyethylene terephthalate according to claim 1 , wherein the polycondensation reaction has a reaction temperature higher than a reaction temperature of the esterification reaction claim 1 , and the polycondensation reaction has a reaction pressure lower than a reaction pressure of the esterification reaction.3. The manufacturing method for the glycol-modified polyethylene terephthalate according to claim 1 , wherein the aqueous titanium-based catalyst comprises an organic acid chelates titanium(IV) complex claim 1 , an organic base chelates titanium(IV) complex claim 1 , or a combination thereof.4. The manufacturing method for the glycol-modified polyethylene terephthalate according to claim 3 , wherein the organic acid chelates titanium(IV) complex is selected from the group consisting of a titanium(IV) citrate complex claim 3 , a lactic acid chelates titanium(IV) complex claim 3 , a lactic acid ammonium salt chelates titanium(IV) complex and any combination thereof; the organic base chelates titanium(IV) complex comprises a titanium(IV) ...

BIBENZOATE COPOLYESTERS AND METHODS TO PRODUCE THEM

Bibenzoate copolyesters are based on (4,4′-biphenyl dicarboxylic acid-co-3,4′-biphenyl dicarboxylic acid) as the diacid component, and on an alicyclic diol compound such as 1,4-cyclohexanedimethanol as a portion of the diol component. Copolyesters are based on 4,4′-biphenyl dicarboxylic acid, and/or 3,4′-biphenyl dicarboxylic acid as the diacid component and may include a multifunctional acid. Copolymers may optionally base an essentially amorphous morphology, high glass transition temperature, high elongation at break, and/or high melting temperature. A method to make the copolymers controls the characteristics of the copolyester selected from one or a combination of amorphous morphology or degree of crystallinity, Tg, Tm, tensile modulus, flexural modulus, elongation at break, and so on, by selecting the proportions of the 4,4′-biphenyl dicarboxylic acid or ester producing equivalent thereof, 3,4′-biphenyl dicarboxylic acid or ester producing equivalent thereof, and/or the proportion of the 1,4-cyclohexanedimethanol in the diol component. 1. A copolyester comprising:a diol component comprising alkylene glycol and an alicyclic polyhydroxyl compound, preferably from about 10 to 90 mole percent alkylene glycol and from about 90 to 10 mole percent alicyclic polyhydroxyl compound, based on the total moles of the diol component in the copolyester; anda diacid component comprising 4,4′-biphenyl dicarboxylate and 3,4′-biphenyl dicarboxylate.2. The copolyester of claim 1 , wherein the diol component comprises from about 10 to 90 mole percent 1 claim 1 ,4-cyclohexanedimethanol claim 1 , based on the total moles of the diol component in the polyester claim 1 , and wherein the diacid component comprises from about 30 to 90 mole percent of the 4 claim 1 ,4′-biphenyl dicarboxylate and from about 70 to 10 mole percent of the 3 claim 1 ,4′-biphenyl dicarboxylate claim 1 , based on the total moles of the diacid component in the copolyester.3. The copolyester of claim 1 , further ...

UNSATURATED POLYESTER RESIN FOR ENGINEERED STONE COMPRISING FINE AND/OR POROUS PARTICLES

The invention relates to an unsaturated polyester resin of low molecular weight which is useful for the preparation of engineered stone. When mixing the unsaturated polyester resin with a fine inorganic particulate material such as cristobalite, a formable composition is obtained that can be further processed and cured to finally yield engineered stone as composite material. The invention also relates to a method for the preparation of engineered stone as well as to the use of the unsaturated polyester resin for the preparation of engineered stone. 2. The unsaturated polyester resin component according to claim 1 , wherein(i) the polycarboxylic acid component comprises fumaric acid and adipic acid; and(ii) the polyfunctional alcohol component comprises propylene glycol and diethylene glycol.3. The unsaturated polyester resin component according to or claim 1 , which hasa weight average molecular weight of not more than about 2000 g/mol; preferably not more than about 1500 g/mol; and/ora viscosity in the range of about 150 to about 400 mPas.4. The unsaturated polyester resin component according to any of the preceding claims claim 1 , wherein the molar content of the second polycarboxylic acid which is selected from the group consisting of saturated aliphatic polycarboxylic acids claim 1 , anhydrides is not more than 13.5 mole.-% relative to the molar content of the polycarboxylic acid component.5. The unsaturated polyester resin component according to any of the preceding claims claim 1 , wherein the molar ratio of (saturated aliphatic polycarboxylic acids claim 1 , anhydrides or esters thereof) to (unsaturated aliphatic polycarboxylic acids claim 1 , anhydrides or esters thereof) in the polyester resin component is in the range of (0.5 to 1.5):(6.5-8.5).6. The unsaturated polyester resin component according to any of the preceding claims claim 1 , which has a viscosity in the range of about 400 to about 500 mPas at 100° C. claim 1 , preferably in the range of about ...

Polyethylene terephthalate resin composition and film formed from same

wherein M1 represents the content (mol/t) of a bivalent metal element selected from the group consisting of Mg, Mn, and Ca; M2 represents the content (mol/t) of a monovalent metal element selected from the group consisting of Li, Na, and K; and P represents the content (mol/t) of phosphorus element.

CATALYST FOR POLYESTER POLYMERIZATION AND METHOD FOR PRODUCING POLYESTER RESIN

The present invention provides a catalyst for polyester polymerization capable of shortening production time of a polyester resin. 1. A catalyst for polyester polymerization comprising a magnesium compound (A) , wherein the magnesium compound (A) has a bonding portion represented by formula (1) ,{'br': None, 'sub': 'a', 'Mg—O—(C)-Q\u2003\u2003(1)'}wherein a is an integer from 1 to 4, and Q is a nitrogen atom or a sulfur atom.2. The catalyst of claim 1 , wherein the magnesium compound (A) has a bonding portion represented by formula (2) claim 1 ,{'br': None, 'sup': '1', 'sub': 2', 'a, 'Mg—O—(CR)-Q\u2003\u2003(2)'}{'sup': '1', 'wherein Rrepresents hydrogen or an alkyl group having 1 to 4 carbon atoms.'}4. The catalyst of claim 3 , wherein Ris —(CR)—Z claim 3 , wherein b is 1 to 28 claim 3 , and Zis hydrogen claim 3 , a hydroxyl group claim 3 , or —O—Mg—O—X.5. The catalyst of claim 1 , further comprising a titanium compound (B).6. The catalyst of any one of claim 5 , wherein a content ratio of the magnesium compound (A) and the titanium compound (B) is 0.01 to 2.0 in a molar ratio defined by magnesium atoms in the magnesium compound (A)/titanium atoms in the titanium compound (B).7. The catalyst of claim 1 , wherein the magnesium compound (A) has a bonding portion represented by formula (6) claim 1 ,{'br': None, 'sub': a', 'a, 'Mg—O—(C)-Q-(C)—O—Ti\u2003\u2003(6).'}8. The catalyst of claim 7 , wherein the magnesium compound (A) has a bonding portion represented by the formula (7) claim 7 ,{'br': None, 'sup': 1', '1, 'sub': 2', 'a', '2', 'a, 'Mg—O—(CR)-Q-(CR)—O—Ti\u2003\u2003(7)'}{'sup': '1', 'wherein Rrepresents hydrogen or an alkyl group having 1 to 4 carbon atoms.'}10. The catalyst of claim 9 , wherein Ris —(CR)—Z claim 9 , wherein b is 1 to 28 claim 9 , and Zis hydrogen claim 9 , a hydroxyl group claim 9 , —O—Mg—O—X claim 9 , or —O—Ti(—O—X).11. A process for producing a polyester resin claim 1 , comprising polycondensing an alcohol component and an acid component in ...

HEAT RESISTANT POLYETHYLENE TEREPHTHALATE AND PROCESS OF MANUFACTURING THEREOF

The present invention relates to a polyethylene terephthalate (PET) composition suitable for manufacturing heat resistant and/or microwaveable containers comprising at least one dicarboxylic acid; at least one diol; at least one nucleating agent; at least one or more crystallization suppressing agents; at least one or more additives; wherein the composition is characterized by at least one of the following properties: Intrinsic Viscosity>0.56 dL/g; Glass transition temperature (Tg)<60° C. and Crystallization exothermic peak temperature (Tch)<60° C. 1. A polyethylene terephthalate (PET) composition suitable for manufacturing heat resistant and/or microwaveable containers comprising:a. at least one dicarboxylic acid;b. at least one diol;c. at least one nucleating agent;d. at least one or more crystallization suppressing agents;e. at least one or more additives;wherein the composition is characterized by at least one of the following properties:Intrinsic Viscosity>0.56 dL/g;Glass transition temperature (Tg)<60° C.; andCrystallization exothermic peak temperature (Tch)<60° C.2. The composition as claimed in claim 1 , wherein the at least one dicarboxylic acid is aliphatic and/or aromatic acid.3. The composition as claimed in claim 1 , wherein the at least one dicarboxylic acid is selected from the group consisting of terephthalic acid claim 1 , dimethyl terephthalate claim 1 , isophthalic acid claim 1 , dimethyl isophthalate claim 1 , 2 claim 1 ,6-napthalene dicarboxylic acid claim 1 , dimethyl-2 claim 1 ,6-naphthalate claim 1 , 2 claim 1 ,7-naphthalenedicarboxylic acid claim 1 , dimethyl-2 claim 1 , 7-naphthalate claim 1 , 3 claim 1 ,4′-diphenyl ether dicarboxylic acid claim 1 , dimethyl-4 claim 1 ,4′-methylenebis(benzoate) claim 1 , oxalic acid claim 1 , dimethyl oxalate claim 1 , malonic acid claim 1 , dimethyl malonate claim 1 , succinic acid claim 1 , dimethyl succinate claim 1 , methylsuccinic acid claim 1 , glutaric acid claim 1 , dimethyl glutarate claim 1 , 2- ...

Method for synthesizing polybutylene adipate terephthalate-polylactic acid (pbat-pla) copolyester

A method for synthesizing a polybutylene adipate terephthalate-polylactic acid (PBAT-PLA) copolyester, the method including: uniformly blending a first prepolymer PBAT and a second prepolymer PLA to yield a mixture, putting the mixture in a vacuum reactor with a vacuum degree of between 5 and 100 pascal, heating the vacuum reactor to a temperature of between 100 and 110° C., and allowing to react for between 0.5 and 1 hr; stepwise increasing the temperature to be between 145 and 155° C. in between 1 and 2 hrs, and allowing to react for between 5 and 10 hrs, to yield a PBAT-PLA copolyester with a weight-average molecular weight of between 100000 and 250000. The method for synthesizing the PBAT-PLA copolyester is eco-friendly, non-toxic and cost-efficient.

METHOD FOR SYNTHESIZING POLY(BUTYLENE SUCCINATE) CATALYZED BY BIOGENIC GUANIDININE

A method for synthesizing poly(butylene succinate) (PBS) having a weight average molecular weight (M) equal to or larger than 1.4×10. The method employs biogenic guanidine (BG) as the main catalyst and includes: a) adding succinic acid (SA), 1.4-butanediol (BDO), and biogenic guanidine to a reactor, heating the reactor to a temperature of between 180 and 200° C. and conducting the esterification between succinic acid and 1.4-butanediol for 2 to 3 hours under atmospheric pressure until all of the water is distilled or boiled off; and b) adding a first cocatalyst, a second cocatalyst, and a third cocatalyst to the reactor, adjusting the absolute pressure in the reactor to be between 0.5 and 3 torr, and polycondensing the mixture in the reactor at the temperature between 210 and 230° C. over 20 to 30 hours. 1. A method for synthesizing poly(butylene succinate) (PBS) having a weight average molecular weight (M) equal to or larger than 1.4×10 , the method comprising:a) adding succinic acid (SA), 1.4-butanediol (BDO), and biogenic guanidine (BG) to a reactor, biogenic guanidine being a main catalyst; heating the reactor to a temperature of between 180 and 200° C. and conducting an esterification between succinic acid and 1.4-butanediol for 2 to 3 hours under atmospheric pressure until all of water is distilled or boiled off; andb) adding a first cocatalyst, a second cocatalyst, and a third cocatalyst to the reactor, adjusting an absolute pressure in the reactor to be between 0.5 and 3 torr, and polycondensing a mixture in the reactor at a temperature between 210 and 230° C. over 20 to 30 hours.2. The method of claim 1 , whereinthe main catalyst is guanine (GN) or creatinine (CR);{'sub': '4', 'the first cocatalyst is tetrabutoxytitanium (TiOBu) or tetrabutoxyzirconium (TBOZ);'}the second cocatalyst is titanium dioxide (TDO); andthe third cocatalyst is zinc oxide (ZO), zinc chloride (ZC), or zinc acetate (ZA).3. The method of claim 1 , whereina molar ratio of SA to BDO is ...

Polyester resin and process for its production

A polyester resin, whereby a molded product excellent in a gas barrier property and also excellent in an ultraviolet shielding property, a color tone, etc., and which is particularly suitable for molding a bottle for e.g. a beverage required to have an aroma retention property, and further, a polyester resin, whereby the acetaldehyde content as a molded product is reduced to eliminate an influence over the taste, aroma, etc. of the content, and a process for its production, wherein the polycondensability is improved, are to be presented. A polyester resin produced by polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the periodic table, via an esterification reaction or an ester exchange reaction, characterized in that the content of copolymerized components other than the terephthalic acid component and the ethylene glycol component, is not more than 4 mol % based on the total dicarboxylic acid component, and in a molded product with a thickness of 3.5 mm injection-molded at 280° C., the difference between the absorbance at a wavelength of 395 nm and the absorbance at a wavelength of 800 nm is at least 0.08, and the difference between the absorbance at a wavelength of 500 nm and the absorbance at a wavelength of 800 nm is at most 0.05; and a process for producing a polyester resin, which comprises polycondensing a dicarboxylic acid component containing terephthalic acid or its ester-forming derivative as the main component, and a diol component containing ethylene glycol as the main component in the presence of (1) a compound of at least one member selected from the group consisting of titanium group elements in Group 4A of the periodic table, (2) a compound of at least one element ...

Catalyst complex for catalysing esterification and trans-esterification reactions and process for esterification/trans-esterification using the same

The present invention relates to a novel catalyst complex for catalysing esterification and trans-esterification reactions, comprising: (i) a polymeric titanium glycolate having the formula [TiO4(CH2)4]n wherein n = 1 to 200; and (ii) an alkali metal glycolate; wherein the molar ratio of the polymeric titanium glycolate and the alkali metal glycolate is about 1.25:1 to about 100:1, preferably about 1.25:1 to about 10:1; and to a process for esterification of a dicarboxylic acid compound and an dialcoholic compound, followed by polycondensation to form a polyester.

Process for the preparation of thermoplastic polyesters with a low carboxyl end group content

Polyester production method, polyester composition, and polyester fiber

In a polyester production method, a titanium compound having a radical selected from a carbonyl group, a carboxyl group, or an ester group, and a phosphorous compound having a structure illustrated in Formula (I), are added. This yields a polyester composition which does not exhibit increased filter pressure when forming, which has excellent filament and film forming properties, and which has a polymer color tone superb to that of conventional products.

Polymerization catalyst for polyester production, polyester, and process for producing polyester

Catalyst for producing polyester, process for producing the same, and process for producing polyester by using the same

Polymerization catalyst for polyester production, polyester, and process for producing polyester

A polyester polymerization catalyst consisting mainly of components except for antimony compounds or germanium compounds which exhibits an excellent catalyst activity and yields a highly thermally stable polyester whose thermal degradation upon a melt process is suppressed efficiently without any need of an inactivation or a removal of the catalyst, a polyester obtained using said polyester polymerization catalyst, and a method for producing a polyester using said polyester polymerization catalyst are provided. A polyester polymerization catalyst is one which contains no antimony or germanium, whose activity parameter (AP) fulfills the relationship: AP(min)<2T (min), which gives, when used in a polymerization, a thermal stability degree (TD) of a resultant polyethylene terephthalate fulfilling the requirement: TD (%)<25, and which comprises a metal-containing component and an organic compound component having an Ar-O- and/or an Ar-N< unit. A polyester can be used in various molded articles such as a fiber, a film, a sheet and a hollow article.

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

Polymerization catalyst for polyester, polyester produced with the same, and process for producing polyester

A polymerization catalyst for polyester production which contains neither a germanium compound nor an antimony compound as a major component. It contains aluminum as the main metallic ingredient, has excellent catalytic activity, and gives a polyester which is effectively inhibited from suffering thermal degradation, during melt molding, without deactivating or removing the catalyst, and is excellent in thermal stability, stability to thermal oxidation, and hydrolytic resistance. The polymerization catalyst contains as a first metallic ingredient at least one member selected among aluminum and compounds thereof and further contains a phosphorus compound represented by a specific chemical formula. The polyester produced with this catalyst is usable as fibers, films, sheets, various moldings including hollow moldings, etc.

Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester

This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles comprising the polyester.

Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters

A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing polyesters. This polymerization catalyst is excellent in catalytic activity, little causes thermal degradation of polyesters in melt molding even when neither deactivated nor removed, and can give thermally stable polyesters which little generate foreign matter and are excellent in transparency and color. The polymerization catalyst is one which contains as the first metal-containing component at least one member selected from the group consisting of aluminum and aluminum compounds and which gives polyethylene terephthalate (PET) having a thermal stability parameter (TS) satisfying the relationship: (1) TS<0.3.

Polymerization catalyst for polyester, polyester produced with the same, and process for producing polyester

Polymerization catalyst for polyester, polyester produced with the same, and process for producing polyester

CURE OF LIQUIDS

La presente solicitud se refiere a aceleradores para curar resinas de poliéster insaturadas, resinas de viniléster y resinas acrílicas junto con iniciadores del tipo peroxido. Los aceleradores se basan en complejos de hierro/manganeso de ligandos dadores de nitrogeno tridentados, tetradentados, pentadentados o hexadentados. También se divulgan composiciones de resinas curables que incluyen aceleradores antes mencionados y un procedimiento de curado para emplear estos aceleradores. Estas composiciones de resinas muestran buenas propiedades de curado y no contienen aceleradores de cobalto. La presente solicitud se refiere además a recubrimientos de gel y compuestos moldeados preparados a partir de tales resinas de poliéster insaturadas, de viniléster y acrílicas. The present application relates to accelerators for curing unsaturated polyester resins, vinyl ester resins and acrylic resins together with peroxide type initiators. Accelerators are based on iron / manganese complexes of tridentate, tetradentate, pentadentate or hexadentate nitrogen donor ligands. Compositions of curable resins including accelerators mentioned above and a curing process for employing these accelerators are also disclosed. These resin compositions show good curing properties and do not contain cobalt accelerators. The present application also relates to gel coatings and molded compounds prepared from such unsaturated polyester, vinyl ester and acrylic resins.

Curing liquids

The present invention relates to accelerators for curing unsaturated polyester resins, vinyl ester resins, and acrylic resins in conjunction with peroxide type initiators. The accelerators are based on iron/manganese complexes of a tetradentate, pentadentate, or hexadentate nitrogen donor ligands. Also disclosed are curable resin compositions including the forgoing accelerators and a curing process for employing these accelerators. These resin compositions show good curing properties and do not contain cobalt accelerators. The present invention further relates to gel coats and molded composites prepared from such unsaturated polyester, vinyl ester, and acrylic resins.

Manufacture of polyethylene terephthalate polyester

The manufacture of linear high-molecular weight film and fiberforming polyester wherein the reaction of polycarboxylic acid with a polyol takes place in the presence of a catalytic amount of a halogenated phenolic compound to improve processing and end product characteristics.

Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters

A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing polyesters. This polymerization catalyst is excellent in catalytic activity, little causes thermal degradation of polyesters in melt molding even when neither deactivated nor removed, and can give thermally stable polyesters which little generate foreign matter and are excellent in transparency and color. The polymerization catalyst is one which contains as the first metal-containing component at least one member selected from the group consisting of aluminum and aluminum compounds and which gives polyethylene terephthalate (PET) having a thermal stability parameter (TS) satisfying the relationship: (1) TS <0.3

Catalizador de polimerização para poliéster, poliéster produzido com o catalizador e processo para a produção do poliéster

Polymerization catalyst for polyester, polyester produced with the same, and process for producing polyester

A novel polycondensation catalyst which is not an antimony compound. The polycondensation catalyst is a polymerization catalyst for polyester production which comprises an aluminum compound and a phosphorus compound having a specific structure. Also provided are a polyester produced with the polymerization catalyst; a process for producing a polyester; and a fiber, a film, and a hollow molding each made of the polyester.

Polyester polymers with low acetaldehyde generation rates and high vinyl ends concentration

A polyester polymer comprising alkylene arylate units, said polymer having an It.V. of at least 0.72 dl/g, a vinyl ends concentration of at least 0.8 microequivalents per gram, an AA generation rate of less than 20 ppm are prepared by addition of a catalyst deactivator either late in the polycondensation or upon remelting of a solid polyester polymer.

Multiple feeds of catalyst metals to a polyester production process

Processes for feeding catalyst systems to a melt phase process for the manufacture of polyester polymers, and more particularly, to split catalyst solution feeds to the melt phase process to provide the target amount and ratio of catalyst metals.

Non-precipitating alkali/alkaline earth metal and aluminum solutions made with polyhydroxyl ether solvents

A stable catalyst solution suitable for catalyzing the polycondensation of reactants to make polyester polymers comprising: (i) M, wherein M is represented by an alkaline earth metal or alkali metal and (ii) aluminum metal and (iii) a polyhydroxyl ether solvent, wherein the molar ratio of M:Al ranges from 0.2:1 to 4:1 or less. The catalyst solution is desirably a solution which does not precipitate upon standing over a period of at least one week at room temperature (25° C.-40° C.), even at molar ratios of M:Al approaching 1:1. There is also provided a method for the manufacture of the solution, its feed to and use in the manufacture of a polyester polymer, and polyester polymers obtained by combining certain ingredients or containing the residues of these ingredients in the composition.

Non-precipitating alkali/alkaline earth metal and aluminum compositions made with organic hydroxyacids

A stable catalyst solution suitable for catalyzing the polycondensation of reactants to make polyester polymers comprising: (i) M, wherein M is represented by an alkaline earth metal or alkali metal and (ii) aluminum and (iii) ethylene glycol and (iii) organic hydroxyacid compounds having at least three carbon atoms and less than three carboxylic acid groups when the hydroxyacid compound has 8 or less carbon atoms, wherein the molar ratio of ethylene glycol:aluminum is at least 35:1. The hydroxyacid compounds enhance to solubility of M and Al in ethylene glycol, even at even at molar ratios of M:Al approaching 1:1. There is also provided a method for the manufacture of the composition, its feed to and use in the manufacture of a polyester polymer, and polyester polymers obtained by combining certain ingredients or containing the residues of these ingredients in the composition.

Aluminum/alkaline or alkali/titanium containing polyesters having improved reheat, color and clarity

A polyester composition containing: a) aluminum atoms; and b) alkaline earth atoms or alkali metal atoms or alkali compound residues such as lithium atoms; and c) particles comprising titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, tungsten, molybdenum, iron, or nickel atoms or combinations thereof, where the particles improve the reheat rate of the polyester composition. The polyester polymer compositions may also contain phosphorus catalyst deactivators/stabilizers. The polyester compositions and the articles made from the compositions such as bottle preforms and stretch blow molded bottles have improved reheat rate while maintaining low haze, high L*, a b* below 3, and have low levels of acetaldehyde. In the process for making the polyester polymer, the polymer melt is polycondensed in the presence of a) and b), with the particles c) added in a melt phase process or added to the polymer in an injection molding machine or extruder. The polyester polymer composition can be made to high IV from the melt phase while avoiding solid state polymerization.

Aluminum/alkyline or alkali/titanium containing polyesters having improved reheat, color and clarity

A polyester composition containing: a) aluminum atoms; and b) alkaline earth atoms or alkali metal atoms or alkali compound residues such as lithium atoms; and c) particles comprising titanium, zirconium, vanadium, niobium, hafnium, tantalum, chromium, tungsten, molybdenum, iron, or nickel atoms or combinations thereof, where the particles improve the reheat rate of the polyester composition. The polyester polymer compositions may also contain phosphorus catalyst deactivators/stabilizers. The polyester compositions and the articles made from the compositions such as bottle preforms and stretch blow molded bottles have improved reheat rate while maintaining low haze, high L*, a b* below 3, and have low levels of acetaldehyde. In the process for making the polyester polymer, the polymer melt is polycondensed in the presence of a) and b), with the particles c) added in a melt phase process or added to the polymer in an injection molding machine or extruder. The polyester polymer composition can be made to high IV from the melt phase while avoiding solid state polymerization.

Polyester polymers with low acetaldehyde generation rates and high vinyl ends concentration

A polyester polymer comprising alkylene arylate units, said polymer having an It.V. of at least 0.72 dl/g, a vinyl ends concentration of at least 0.8 microequivalents per gram, an AA generation rate of less than 20 ppm are prepared by addition of a catalyst deactivator either late in the polycondensation or upon remelting of a solid polyester polymer.

Catalyst complex for catalysing esterification andtrans-esterification reactions and process for esterification trans esterification using the same

Polymerization catalysts for polyesters

The invention provides non-antimony containing polymerization catalysts for the condensation of polyesters. The catalyst is in the form of a clear chlorine and/or bromine containing solution of a metal glycoxide and a metal glycolate having a pH in the range of from 0 to about 1, and containing chlorine and/or bromine atoms at a number ratio of chlorine and/or bromine to total metal cations in the catalyst ranging from about 0.5:1 to about 3:1. Polyesters produced with this catalyst have improved melt elasticity, and higher melt viscosity. The former property is desirable for the preparation of large and complex shaped polyester containers, and the latter property is desirable for melt spinning of industrial grade fibers and tire cords.

ポリエステル重合触媒及びこれを用いて製造されたポリエステル並びにポリエステルの製造方法

Liquid curing

FIELD: chemistry. SUBSTANCE: invention relates to curing accelerators of unsaturated polyester resins, vinyl ester resins and acrylic acids in combination with peroxide type initiators. Accelerators are based on complexes of iron/manganese with tridentate, tetradentate, pentadentate or hexadentate nitrogen donor ligands. Also disclosed are: curable compositions of resins, which include said accelerators, and method of curing with application of said accelerators. EFFECT: resin compositions demonstrate good curing properties and do not contain cobalt accelerators. 22 cl, 8 tbl, 9 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 559 487 C2 (51) МПК C08K 9/00 (2006.01) C08K 5/34 (2006.01) C08K 5/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012133457/05, 06.01.2011 (24) Дата начала отсчета срока действия патента: 06.01.2011 (72) Автор(ы): ХЭЙДЖ Рональд (NL), РАЙХЕРТ Ричард Аллен Мл. (US) 06.01.2010 EP 10150166.6 (43) Дата публикации заявки: 20.02.2014 Бюл. № 5 R U (73) Патентообладатель(и): ОЭмДжи ЮКей ТЕКНОЛОДЖИ ЛИМИТЕД (GB) Приоритет(ы): (30) Конвенционный приоритет: (45) Опубликовано: 10.08.2015 Бюл. № 22 2 5 5 9 4 8 7 (56) Список документов, цитированных в отчете о поиске: WO 2008003652 A1, 10.01.2008. WO 2008003492 A1, 10.01.2008. GB 1452460 A1, 13.10.1976. WO 2006034981 A1, 06.04.2006. SU 1694601 A1, 30.11.1991. RU 2007144509 A1, 10.06.2009 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.08.2012 GB 2011/000007 (06.01.2011) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: R U 2 5 5 9 4 8 7 WO 2011/083309 (14.07.2011) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ОТВЕРЖДЕНИЕ ЖИДКОСТЕЙ (57) Реферат: Изобретение относится к ускорителям отверждения ненасыщенных сложных полиэфирных смол, виниловых сложноэфирных смол и акриловых смол в сочетании с инициаторами пероксидного типа. Ускорители основаны на ...

Process for continuous preparation of high molecular weight polyesters by esterification of dicarboxylic acids and/or transesterification of dicarboxylic acids with diols and/or mixtures thereof and an apparatus therefor

본 발명은 촉매의 존재하에 디올로 디카복실산을 에스테르화 및/또는 디카복실산 에스테르를 트랜스에스테르화하여 타워 반응기 내에서 예비중합체를 형성하고, 중축합 반응기 내에서 상기 예비중합체의 중축합으로 고분자 폴리에스테르를 형성하는 고분자 폴리에스테르 및/또는 그 혼합물의 연속 제조방법에 관한 것이고, 상기 타워 반응기 내에서 40 이상 70 반복 단위(DP)를 갖는 예비중합체가 생성되고, 이 예비중합체가 하나의 다른 반응기 내에서만 중축합되어 150 이상 205 DP를 갖는 폴리에스테르를 형성한다. The present invention relates to esterification of dicarboxylic acids with diols and / or transesterification of dicarboxylic acid esters in the presence of a catalyst to form prepolymers in a tower reactor, and polycondensation of the prepolymers in a polycondensation reactor. To a continuous process for the preparation of polymeric polyesters and / or mixtures thereof, wherein a prepolymer having at least 40 and 70 repeat units (DP) is produced in the tower reactor, the prepolymer being only in one other reactor. Polycondensation to form a polyester having at least 150 and 205 DPs.

Method of continuous production of polyethers with high molecular weight by etherification of dicarboxylic acids and/or trans-etherification of dicarboxylic acid ethers by divalent alcohols and/or their mixes, and installation to this end

FIELD: process engineering. ^ SUBSTANCE: this invention relates to continuous production of polyether with high molecular weight by etherification of dicarboxylic acids and/or trans-etherification of dicarboxylic acid ethers by divalent alcohols and/or their mixes in the presence of catalysts with formation of prepolymer in tower reactor and polycondensation of said prepolymer for production of polyether with high molecular weight in polycondensation reactor wherein prepolymer with 40 to 70 repeated links are produced in tower reactor, while polycondensation of said prepolymer is carried out in sole extra reactor, thus producing ether with 150 to 205 repeated links. ^ EFFECT: possibility to discharge melt from reactor in several seconds after gas release, to reduce concentration of residual gases and to convert it to above 110 ppm. ^ 40 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 411 990 (13) C2 (51) МПК B01J 19/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008147123/05, 31.05.2007 (24) Дата начала отсчета срока действия патента: 31.05.2007 (73) Патентообладатель(и): Уде Инвента-Фишер ГмбХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 02.06.2006 DE 102006025942.4 (72) Автор(ы): ШУЛЬЦ ВАН ЭНДЕРТ Эйке (DE) (43) Дата публикации заявки: 20.07.2010 Бюл. № 20 2 4 1 1 9 9 0 (45) Опубликовано: 20.02.2011 Бюл. № 5 (56) Список документов, цитированных в отчете о поиске: WO 03042278 A1, 22.05.2003. WO 2006050799 A1, 18.05.2006. EP 0320586 A1, 21.06.1989. RU 2275236 C2, 27.04.2006. RU 2151779 C1, 27.06.2000. 2 4 1 1 9 9 0 R U (86) Заявка PCT: EP 2007/004835 (31.05.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.01.2009 (87) Публикация заявки РСТ: WO 2007/140925 (13.12.2007) Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ", пат.пов. А.В.Поликарпову (54) СПОСОБ НЕПРЕРЫВНОГО ПРОИЗВОДСТВА СЛОЖНЫХ ПОЛИЭФИРОВ С ВЫСОКОЙ ...

Processo para a producao de poliesteres e copoliesteres

聚酯聚合催化剂、利用其制得的聚酯和聚酯的制造方法

本发明提供一种锑化合物以外的新型的聚酯缩聚催化剂、使用该催化剂制造的聚酯、以及聚酯的制造方法。本发明的缩聚催化剂是由铝化合物和具有特定结构的磷化合物所构成的聚酯聚合催化剂。另外，本发明是使用该聚酯聚合催化剂制造的聚酯和聚酯的制造方法。还有，本发明是由该聚酯构成的纤维、薄膜以及中空成形品。

특이 에스테르화 조건하에서의 폴리에스터의 제조방법

폴리에스터는 에스터 조성물을 형성하기 위해, 2,5-푸란디카복실릭 에시드 및 에틸렌 글라이콜을 함유하는 출발 혼합물이 에스테르화되는 단계; 다중축합체을 얻기 위해, 이에 따라 얻어진 상기 에스터 조성물이 감압 및 다중축합 촉매 존재하에서 다중축합되는 단계;를 포함하고, 상기 2,5-푸란디카복실릭 에시드 및 에틸렌 글라이콜은 하기 식 1에서 정의된 에스테르화 포텐셜과 같은 조건하에서 반응하는 것을 특징으로 하는 폴리에스터의 제조방법에 의해 제조된 폴리(에틸렌 2.5-푸란디카복시레이트)를 포함이다: <식 1> 에스테르화 포텐션(EsPo) = (MR-1) 2 * P H2O (T), (MR: 에틸렌 글라이콜 대비 2,5-furandicarboxylic acid의 몰 비로, 상기 MR은 1보다 크고, P H2O (T): 온도 T 에서의 물의 순수성분 증기 압력(bar)으로, 이때, 상기 온도 T 는 다중축합 효율을 0.8 이하로 하기 위해 압력이 감소되기 전 에스테르화 혼합물의 최종 온도).

Method for preparing poly(ether ester) copolymer

본 발명은 제조 공정 중 부반응을 현저히 감소시킬 수 있는 폴리에테르에스테르 공중합체의 제조 방법에 관한 것이다. 본 발명의 폴리에테르에스테르 공중합체 제조방법에 따르면, 제조 공정 중 부반응이 현저히 감소하며, 이에 따라 순도 및 색도가 향상된 우수한 품질의 폴리에테르에스테르 공중합체를 얻을 수 있다. The present invention relates to a method for producing a polyether ester copolymer capable of significantly reducing side reactions during the production process. According to the method for preparing a polyether ester copolymer of the present invention, side reactions during the manufacturing process are significantly reduced, and thus, a polyether ester copolymer of excellent quality with improved purity and color can be obtained.

Method for preparing and polymerizing macrocyclic poly(alkylene discarboxylate) oligomers

Macrocyclic polyester oligomer compositions comprising alkylene isophthalate or terephthalate units or the like are prepared by the reaction of a diol with a diacid chloride in the presence of at least one amine characterized by substantially no steric hindrance around the basic nitrogen atom. The reaction is conducted under substantially anhydrous conditions and at a temperature form about -25° to about +25° C. The resulting macrocyclic oligomers may be converted to linear polyesters by contact with catalysts including alkali metal salicylates, stannous alkoxides and organotin compounds.

Method for preparation of macrocyclic poly(alkylene dicarboxylate) oligomers from bis(hydroxyalkyl) dicarboxylates

Macrocyclic poly(alkylene dicarboxylate) oligomers are prepared in high yield by the reaction of a dicarboxylic acid chloride such as terephthaloyl chloride with at least one bis(hydroxyalkyl) ester such as bis(4-hydroxybutyl) terephthalate, in the presence of a highly unhindered amine or a mixture thereof with at least one other tertiary amine such as triethylamine, in a substantially inert organic solvent such as methylene, chlorobenzene or a mixture thereof. The concentration of the reagents in the reaction mixture are at least 0.08M.

Polyester polymers with low acetaldehyde generation rates and high vinyl ends concentration

알킬렌 아릴레이트 단위를 포함하고 0.72dL/g 이상의 It.V., 0.8μeq/g 이상의 비닐 말단 농도 및 20ppm 미만의 AA 발생률을 갖는 폴리에스터 중합체는 중축합시에 나중에 또는 고체 폴리에스터 중합체의 재용융시에 촉매 불활성화제를 첨가함으로써 제조된다. Polyester polymers containing alkylene arylate units and having an It.V. of at least 0.72 dL / g, a vinyl end concentration of at least 0.8 .mu.eq / g and an incidence of AA of less than 20 ppm can be obtained later upon polycondensation or after re-melting of the solid polyester polymer By adding a catalyst deactivation agent.

一种无重金属聚酯缩聚催化剂的制备方法及应用

本发明公开了一种无重金属聚酯缩聚催化剂的制备方法及应用。将铝化合物、碱性物、乙二醇在50～90℃下搅拌反应1小时成为中间体溶液，中间体溶液冷却至室温后加入醋酸盐、稳定剂磷化合物，再升温至90～160℃搅拌反应1小时，冷却至室温后成为稳定的催化剂溶液。该催化剂可用作合成聚对苯二甲酸乙二醇酯的缩聚催化剂，可在酯化反应前与反应物一起加入，或者在酯化结束后到聚合反应前加入，催化剂不含重金属，活性、性能与锑系催化剂相当。合成的PET色相不发黄，解决了使用钛系催化剂合成聚酯产品发黄的缺点；所合成的PET可以用于生产纤维、薄膜、瓶片等领域，制成各种后续PET产品。

制备多嵌段和梯度共聚物的一步、一锅法

本发明涉及特制的二-、三-和多-嵌段以及梯度聚酯/聚碳酸酯共聚物的领域，其通过在有机金属、金属盐或有机催化剂的存在下将单体同时引入到反应介质中而制备。

一种生物降解材料多嵌段聚酯及其制备方法

本发明提供了一种生物降解材料多嵌段聚酯及其制备方法，方法包括以下步骤：在催化剂作用下，丙交酯、邻苯二甲酸酐和环氧环己烷在溶剂中进行开环共聚合反应，得到多嵌段聚酯；所述催化剂为具有式I结构的希夫碱锰化合物。本发明提供的方法采用具有式I结构的希夫碱锰化合物用于催化丙交酯、酸酐和环氧环己烷的开环共聚合，该催化剂具有NNOO三齿配位能力，能够形成一个金属活性中心结合位点，是一种四配位希夫碱锰催化剂，对两种不同类型的开环聚合都具有比较好的活性，并且对单体有很高的选择性，可以实现可调控的多嵌段聚合反应。本申请通过三次的酸酐添加能够得到7段的聚丙交酯‑聚酸酐环氧共聚物，最高分子量能够达到47kg/mol。