ПРОИЗВОДНЫЕ ЦЕЛЛЮЛОЗЫ, ОБЛАДАЮЩИЕ ГЕЛЕПОДОБНЫМИ РЕОЛОГИЧЕСКИМИ СВОЙСТВАМИ, И СПОСОБ ИХ ПОЛУЧЕНИЯ

FIELD: paper-and-pulp industry. SUBSTANCE: cellulose ethers showing gel-like rheological properties in aqueous solution are prepared as follows: (a) cellulose is subjected to mercerization with aqueous alkaline metal hydroxide solution in presence of alkyl halide-containing suspending agent; (b) mercerized cellulose is reacted with one or several alkylene oxides; (c) mercerized cellulose is reacted with alkyl halide contained in suspending agent; (d) mercerized cellulose is subjected, consecutively or simultaneously, to interaction with cross-linking agent used in quantity of 0.0001 to 0.05 equivalents, said equivalents being meant to be molar ratio of structure-forming agent to structural unit of anhydro form of utilized cellulose; and (e) irreversibly cross-linked cellulose ether obtained after optional addition alkaline metal hydroxide and/or alkyl halide is isolated from reaction mixture and, if necessary, subjected to cleaning and drying. in addition, method of preparing cellulose ethers is described. EFFECT: improved rheological properties of cellulose products. 12 cl, 4 tbl, 3 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 321 595 (13) C2 (51) ÌÏÊ C08B 11/02 (2006.01) C08B 11/193 (2006.01) C08B 15/00 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2003123018/04, 24.07.2003 (30) Êîíâåíöèîííûé ïðèîðèòåò: 25.07.2002 (ïï.1-12) DE DE10233788.8 (73) Ïàòåíòîîáëàäàòåëü(è): Âîëüô Öåëëóëîñèêñ ÃìáÕ óíä Êî. Êà (DE) (43) Äàòà ïóáëèêàöèè çà âêè: 27.02.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 24.07.2003 (72) Àâòîð(û): ØËÅÇÈÃÅÐ Õàðòâèã (DE), ÊÓËËÜ Àðíå Õåííèíã (DE), ÊËÎÐ Ýðèê-Àíäðåàñ (DE) (45) Îïóáëèêîâàíî: 10.04.2008 Áþë. ¹ 10 2 3 2 1 5 9 5 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 4321367 À, 23.03.1982. ÅÐ 1180526 À, 20.02.2002. US 4175183 À, 20.11.1979. RU 2196778 Ñ1, 20.01.2003. (57) Ðåôåðàò: Ïðîñòûå ýôèðû öåëëþëîçû ñ ãåëåïîäîáíûìè ðåîëîãè÷åñêèìè ...

СПОСОБ ПРОИЗВОДСТВА ЦЕЛЛЮЛОЗНЫХ ВОЛОКОН И ПЛЕНОК

FIELD: manufacture of cellulose fibres and films. SUBSTANCE: the method is featured by moulding of cellulose aminoacid solution by way of its forcing through a spinneret or slit. Small jets of solution forced through the spinneret or slit are passed through an air gap. Solution jets are coagulated in a settling bath. After coagulation drafting of fibres or deep drawing of films is accomplished. Spinneret drafting does not exceed unity. EFFECT: facilitated procedure. 1 tbl ЕЕ 90с пы Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 061 115. 13) Сл О ОлЕ 6/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5010549/12, 08.01.1992 (30) Приоритет: 09.01.1991 АТ 31/91 (46) Дата публикации: 27.05.1996 (56) Ссылки: Ц, патент М 4246221, кл. О О1Е 6/00, 1981. (71) Заявитель: Ленцинг АГ (АТ) (72) Изобретатель: Раймунд Юркович[АТ], Хайнрих Фирго[АТ], Дитер Айхингер[АТ] (73) Патентообладатель: Ленцинг АГ (АТ) (54) СПОСОБ ПРОИЗВОДСТВА ЦЕЛЛЮЛОЗНЫХ ВОЛОКОН И ПЛЕНОК (57) Реферат: Использование: производство целлюлозных волокон и пленок. Сущность изобретения: способ характеризуется формованием целлюлозного аминокислотного раствора путем его продаливания через фильеру или щель. Продавленные струйки раствора пропускают через воздушный зазор. В осадительной ванне осуществляют коагулирование струек раствора. После коагуляции осуществляют вытягивание волокон или глубокую вытяжку пленок. Фильерная вытяжка не превышает единицу. 1 табл. 2061115 С1 КО ЕЕ 90с пы Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) 13) ВО "” 2061 115 ' (51) пё. С1.6 О 01 Е 6/00 СЛ 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 5010549/12, 08.01.1992 (30) Рпогйу: 09.01.1991 АТ 31/91 (46) Рае о! рибИсаНоп: 27.05.1996 (71) АррИсапе: Гетщзтда АС (АТ) (72) |пуетог: Кайтипа уигкомсН[АТ], КПатгКки Е[тдо[АТ], Ойег АкптаегАТ] (73) Ргорпеюг: [ещзта Ас (АТ) (54) МЕТНОО ОЕ МАМУРАСТУВЕ ОЕ СЕШУЕО$Е НВКЕ$ АМО ЕЁЕМ$ (57) АБзГасЕ: НЕЕО: тапуфабсуге о сешозе ПБгез апа Нт$. ЗУВЗТАМСЕ ...

Способ получения простого эфира целлюлозы, полученный этим способом простой эфир целлюлозы и отделочные материалы для строительства, содержащие простой эфир целлюлозы

CELLULOSEETHER UND VERFAHREN ZU DEREN HERSTELLUNG

Verfahren zur Herstellung eines cellulosischen Formkörpers

A process for the manufacture of cellulose ethers

Cellulose ethers are prepared from material such as cotton, wood-cellulose, or sulphite-or sodium cellulose by subjecting the raw material to a short preliminary treatment with alkali lyes so as to remove oxycellulose, hemicellulose, pentoses, mannan, and xylan, washing with water till neutral, repeating this preliminary treatment if desired, drying, preparing alkali cellulose without introducing any ripening process, and etherifying with an ester of an inorganic acid. The alkali lye for the preparation of the alkali cellulose, and the etherifying agent are used in about or slightly above the theoretical amount. An example is given of the preparation of ethyl cellulose, the preliminary treatment with the caustic soda of 20-25 DEG B<\>e being repeated 4 to 5 times. The ethyl cellulose possesses a high viscosity and may be used in the preparation of films, insulating materials, lacquers, and plastic masses. Specifications 229,678, 249,173, 278,767 and 288,997, [all in Class 2 (ii), Cellulose ...

Process for the manufacture of soluble ethers from vegetable materials

Soluble ethers are obtained directly from straws, seaweed, esparto and other materials containing fibres which are encrusted but not converted into wood, by treatment with etherifying agents, for example, by causing alkyl- or aralkyl-halides to react at an elevated temperature in the presence of caustic alkali. The products are soluble in the usual organic solvents, and may be employed in the manufacture of films and plastics and for impregnation. Specifications 12854/12 and 6035/13, [both in Class 2 (ii), Cellulose &c.], are referred to.

Improvements in or relating to the manufacture of cellulose derivatives

... 315,278. British Celanese, Ltd., (Assignees of Miles, G. 11'.). July 10, 1928, [Convention date]. Cellulose ethers.-For the manufacture of cellulose ethers, cellulosic material is treated with the alkylating or aralkylating agent, and thereafter the alkali, either in the solid state or as a concentrated aqueous or alcoholic solution, is added to the mixture in order to produce the desired etherification. All the etherifying agent may be added in the first stage, or a part only may be added in this stage and the remainder added either all at once or in portions after the bulk of the alkali has been added. The first. stage of the process may occupy several hours at 0-45‹ C., and a small quantity of alkali carbonate, hydroxide, &c. mav be added to avoid tendering of the material. The reaction mixture during the etherification stage may be maintained at a temperature of 30-60‹ C. The starting material may be linters, wood pulp or reconstituted cellulose as obtained from viscose. The Specification ...

Improvements in or relating to the production of cellulose ethers

Cellulose ethers of a low degree of etherification which are insoluble in water but soluble in aqueous alkali, are prepared by a process involving the steps of continuously impregnating with a liquid etherifying agent a cellulose pulp sheet which has been previously treated with caustic alkali, continuously subjecting the impregnated sheet to pressure to remove excess of etherifying agent, and allowing the impregnated sheet to undergo reaction. As a modification the cellulose pulp sheet may be impregnated with the etherifying agent and caustic alkali simultaneously. The impregnation of the sheet with etherifying agent may be carried out by passing the sheet through a bath or spray of such agent and then through squeezing rollers; or by supplying the agent to the squeezing rollers, for example, by spraying the liquid on to one roller or by arranging that this shall dip into a trough, the roller being if necessary, provided with a covering of absorbent material or with an engraved surface ...

PROCESS FOR THE MANUFACTURE OF WATER ADSORBING CELLULOSE ETHERS

... 1487938 Cross-linked cellulose ethers HOECHST AG 13 Nov 1974 [15 Nov 1973] 49154/74 Heading C3A Cellulose is etherified and cross-linked, both the cross-linking and the etherification reactions being performed in the presence of 0À8 to 7À5 parts by weight of isopropanol per part of cellulose. The cross-linking agent is selected from dichloroacetic acid, phosphorus oxychloride and compounds containing an acrylamino group a chloroazomethine group (-N=CCl-) or an allyloxyazomethine group From 0À001 to 0À20 parts by weight per part of cellulose are used. The product is water adsorbent and at least partially water-insoluble. The illustrated cellulose ethers are hydroxyethyl-, carboxymethyl- and mixed methyl- and hydroxyethyl cellulose. Exemplified cross-linking agents are dichloroacetic acid, dimethylol methylene bisacrylamide, methylene bisacrylamide, 2,4,6-trichloropyrimidine, 2,4,5,6 - tetrachloropyrimidine, cyanuric chloride, acrylamidomethylene chloroacetamide, trisacryloylhexahydrotriazine ...

Improvements in and relating to the production of ethers of carbohydrates having the empirical formula ncho their conversion products and derivatives

In the production of ethers of cellulose, starch, dexterin, &c., and their conversion products, the cellulose &c. is treated in the presence of at least 15 parts of a 30-50 per cent caustic alkali solution with alkylating-, aralkylating-, or arylating-agents. The Specification as open to inspection under Sect. 91 (3) (a) describes also the production of ethers from the derivatives of cellulose &c. This subject-matter does not appear in the Specification as accepted.ALSO:In the production of ethers of starch, dextrin, &c., and their conversion products, the carbohydrate is treated in the presence of at least 15 parts of a 30-50 per cent caustic alkali solution with alkylating-, aralkylating- or arylating-agents. The Specification as open to inspection under Sect. 91 (3) (a) includes also the production of ethers from the derivatives of starch, dextrin, &c. This subject-matter does not appear in the Specification as accepted.

PROCEDURE FOR THE PRODUCTION OF WATER TAKING UP, BUT THEREIN LARGE UNLOSLICHEN CELLULOSEATHERN

PROCEDURE FOR THE PRODUCTION OF CELLULOSEETHERN WITH A DIMETHOXYETHAN ABSTENTION DISPERSION AID.

MORE CELLULOSEETHER AND PROCEDURES FOR THEIR PRODUCTION

PROCEDURE FOR THE PRODUCTION OF CELLULOSE DERIVATIVES

Cellulose microfibrils with modified surface, preparation method and use thereof

Method for producing cellulose derivatives

Cellulose ethers and method of preparing the same

Method for producing cellulose derivatives

METHOD FOR CONTROLLING CELLULOSE ETHERIFICATION REACTION

ABSTRACT OF THE DISCLOSURE This invention provides a method for con-trolling the reaction between cellulose and an etheri-fying agent, which comprises the steps of (a) combining cellulose with an alkylene oxide and alkyl halide in a reactor wherein an etherification reaction is initiated which includes a vapor phase, (b) periodically measuring the quantity of at least one of the reactants or products in the vapor phase of the reactor and therewith determining the rate of the etherification reaction taking place, and (c) regulating the reaction temperature continuously while the reaction is taking place by using the rate of reaction determined in step (b) to determine the amount of heating or cooling needed for the reactor.

ENVIRONMENTALLY FRIENDLY PROCESS FOR THE PREPARATION OF NANOCELLULOSE AND DERIVATIVES THEREOF

The present disclosure relates to the environmentally preparation of nanocellulose and derivatives thereof. The invention further relates to the preparation of cellulose derivatives.

BASE FOR FILM-COATING PHARMACEUTICALS AND METHOD FOR PREPARING SAME

Procédé pour la transformation de substances sous l'effet de réactions chimiques.

Verfahren zur Herstellung von wasserlöslichen Celluloseäthern mit niederem Salzgehalt.

Procédé de préparation de nouveaux composés substitués à haut poids moléculaire

Verfahren zur Herstellung eines Gemisches eines Celluloseäthers und Siliciumdioxyd

Procédé pour la séparation chromatographique d'un fluide, appareil pour la mise en oeuvre de ce procédé et application de ce procédé

Procédé de préparation d'un copolymère

Verfahren zur Veredelung von cellulosehaltigen Textilmaterialien

Procédé de préparation d'une alcalicellulose

Verfahren zur Herstellung von wasserlöslichen vernetzbaren Celluloseallylmischäthern

Procédé pour la séparation de substances contenues dans un mélange de composés chimiques et colonne chromatographie gaz-solide par la mise en oeuvre du procédé

Verfahren zur Veredlung von Cellulosetextilien

Verfahren zur Herstellung von Copolymeren aus äthylenisch ungesättigten, polymerisierbaren Verbindungen und Cellulosederivaten

Verfahren zur Herstellung von eisenhaltigen Cellulosepfropfcopolymeren

Procédé de chromatographie gazeuse et appareil pour sa mise en oeuvre

PROCEDURE FOR THE PRODUCTION OF LOWSUBSTITUTED CELLULOSE ETHERS.

METHOD FOR PRODUCING CELLULOSE DERIVATIVES

Method for preparing cellulose ethers, cellulose ethers prepared by said method and architectural finishing material comprising same

Production of cellulose ether-salts

Manufactoring process of ethers of the carbohydrates of the nc6h10o5 type such as cellulose, the starch, dextrin, etc

METHOD FOR FIXING OF LIGANDS A LOW MOLECULAR WEIGHT OR HIGH ON POLYMER CARRIERS

Method of preparation of cellulose ethers

Preparation of derived from cellulose

FUNCTIONALIZED DERIVATIVE OF CELLULOSE MATERIAL

Pharmaceutical compositions comprising dextran and cellulose ethers

COMPOSITIONS HAS PROGRESSIVE RELEASE OF THE SUBSTANCE ACTIVATES AND COMPLEXES INTEND HAS THEIR PREPARATION

L'INVENTION CONCERNE UN NOUVEAU COMPLEXE PAR COORDINENCE MOLECULAIRE. LE NOUVEAU PRODUIT SUIVANT L'INVENTION EST UN COMPLEXE ENTRE UN POLYMERE DE CELLULOSE ET UN ALCOOL ALIPHATIQUE SOLIDE CONTENANT DE 8 A 18 ATOMES DE CARBONE, EVENTUELLEMENT SUBSTITUE PAR UN GROUPE ALIPHATIQUE QUI CONTIENT LUI AUSSI DE 8 A 18ATOMES DE CARBONE. CONFORMEMENT A L'INVENTION, LE POLYMERE DE CELLULOSE A ETE SOLVATE AVEC UN SOLVANT POLAIRE VOLATIL ET LE SOLVANT POLAIRE VOLATIL A ETE AU MOINS PARTIELLEMENT REMPLACE PAR UN ALCOOL ALIPHATIQUE SOLIDE. LE PRODUIT SERT A LA CONFECTION DE COMPOSITIONS A LIBERATION PROGRESSIVE DE LA SUBSTANCE ACTIVE.

Improvements in the manufacture of textile fibres

Improvements with the manufacture of cellulose derivatives

Methods for Preparing Cellulose Ether

본 발명에 따르면, 알칼리 셀룰로오스 중의 알칼리 분포가 균일한 알칼리 셀룰로오스를 효율적으로 제조하는 방법을 제공한다. INDUSTRIAL APPLICABILITY According to the present invention, there is provided a method for efficiently producing an alkali cellulose having an even alkali distribution in an alkali cellulose. 또한, 본 발명은 파이프형 접촉기 내에서 펄프와 알칼리 금속 수산화물 용액을 연속적으로 접촉시키는 공정과, 얻어진 접촉물을 탈액하는 탈액 공정을 포함하는 알칼리 셀룰로오스의 제조 방법을 제공한다. 또한, 상기 알칼리 셀룰로오스를 사용하는 셀룰로오스 에테르의 제조 방법을 제공한다. 또한, 한쪽 단에 펄프와 알칼리 금속 수산화물 용액의 투입구를 하나 이상 설치하고, 다른쪽 단에 접촉물의 취출구를 하나 이상 설치하여, 펄프와 알칼리 금속 수산화물 용액을 상기 한쪽 단으로부터 상기 다른쪽 단에 접촉시키면서 이동시켜, 상기 다른쪽 단으로부터 취출할 수 있는 파이프형 접촉기와, 취출된 접촉물로부터 케이크를 분리하기 위한 탈액 수단을 구비하는 알칼리 셀룰로오스의 제조 장치를 제공한다. The present invention also provides a process for producing an alkali cellulose comprising a step of continuously contacting a pulp with an alkali metal hydroxide solution in a pipe-type contactor, and a dehydration step of dewatering the obtained contact product. The present invention also provides a method for producing cellulose ether using the above alkali cellulose. Further, at least one inlet of the pulp and the alkali metal hydroxide solution is provided at one end, and at least one outlet of the contact is provided at the other end, and the pulp and the alkali metal hydroxide solution are contacted from the one end to the other end And a liquid removing means for separating the cake from the taken-out contact. The present invention also provides an apparatus for producing alkaline cellulose. 알칼리 셀룰로오스, 알칼리 분포, 파이프형 접촉기, 펄프, 알칼리 금속 수산화물 용액, 셀룰로오스 에테르 Alkali cellulose, alkaline distribution, pipe type contactor, pulp, alkali metal hydroxide solution, cellulose ether

Produção de celulose microcristalina

METHOD FOR THE MANUFACTURE OF CELLOLOSE MOULDED PRODUCT

ESSENTIALLY FIBRE-FREE CELLULOSE ETHER WITH IMPROVED WATER RETENTION, METHOD FOR THE PRODUCTION AND USE THEREOF

The invention relates to a method for producing an essentially fibre-free carboxy methyl cellulose with predominantly elastic properties. The invention also relates to the use thereof as super absorbent material and as an auxiliary agent to regulate rheology and water retention in fields such as cosmetics, pharmacy, foodstuffs and in technical applications such as additives for paint, cable sealing or tunnel building and civil and underground engineering.

Treatment of polysaccarides with dialdehydes

A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRw of larger than 11, wherein w is the angular frequency in sec-1 and is defined as 2**RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Rw is the radius of the mixing device in m, and g is the acceleration due to gravity in m/s2. Fr w = w 2 ⁢ R w g ...

Method for the production of easily wetted, water-soluble, powdered at least alkylated non-ionic cellulose ethers

The invention relates to a method for the production of at least alkylated, non-ionic cellulose ethers, whereby at least 10% of all hydroxy groups contained therein are alkylated and which may flocculate in water, within a temperature range of 45 to 95° C. The invention is characterised in that at least one surfactant in solid, liquid or solution form is added to the cellulose for production of the cellulose ether.

Methods of separating a corn fiber lipid fraction from corn fiber

The invention provides a method of separating from corn fiber a lipid fraction having phytosterol esters and phytosterols where the method has the steps of: (a) heating an aqueous mixture of unground corn fiber; (b) contacting the mixture of step (a) with at least one enzyme suitable for digesting starch for a time and at a temperature suitable to provide a mixture of an essentially destarched corn fiber and a liquid comprising soluble carbohydrates; (c) contacting the mixture of step (a) or (b) with a protease enzyme to provide a proteolyzed corn fiber and a liquid; (d) separating the liquid of step (c) from the corn fiber to provide a destarched, proteolyzed corn fiber; and (e) extracting the destarched, proteolyzed corn fiber with at least one organic solvent. A corn fiber lipid fraction/organic solvent solution having phytosterol esters and phytosterols is provided. The invention also provides a corn fiber lipid fraction containing phytosterols and phytosterol esters obtained via solvent extraction of a proteolyzed corn fiber. The concentration of phytosterols and phytosterol esters in the lipid fraction is at least about 1.4 times greater than the concentration of phytosterols and phytosterol esters in the lipid fraction of a nonproteolyzed corn fiber.

Polysaccharide derivative

Polysaccharide derivatives derived from a polysaccharide or a derivative thereof by substituting a part or all of the hydrogen atoms of the hydroxyl groups of the polysaccharide or the derivative thereof with the groups represented by the following formula (1):wherein E1 represents a divalent saturated C1-6 hydrocarbon group which may be substituted with one or more hydroxyl groups or oxo groups, n stands for a number of from 8 to 300, n numbers of As may be the same or different and each independently represent a divalent saturated C1-6 hydrocarbon group, E2 represents an ether bond or an oxycarbonyl group, and R represents a C4-30 alkyl group which may be substituted with one or more hydroxyl groups, in which the H(s) of one or more hydroxy groups in each of said groups (1) may be further substituted with the groups (1); thickeners and emulsifiers comprising these polysaccharide derivatives; as well as aqueous compositions containing said polysaccharide derivatives.The polysaccharide ...

Use of modified cellulose derivatives as thickening agents of the organic phase of a nail varnish composition

Cellulose derivatives (I) are used to thicken the organic phase of a nail varnish composition. (I) are nitrocellulose or cellulose ester derivatives in which hydroxy groups are replaced by organic groups. Cellulose derivatives (I) are used to thicken the organic phase of a nail varnish composition. (I) are nitrocellulose or cellulose ester derivatives in which hydroxy groups are replaced by OYR groups. R : (a) linear, branched or cyclic (un)saturated hydrocarbyl optionally interrupted by aromatic groups and/or heteroatoms (O, N, P, Si, S); (b) (per)fluoroalkyl; (c) a polyolefin, polydiene or polycondensate group; (d) a (poly)organosiloxane group; or (e) a mesogenic group; all optionally containing groups Z capable of forming hydrogen bonds; Y : a single bond or a divalent group. An independent claim is also included for a nail varnish composition comprising an organic phase based on an organic solvent and containing a compound (I) which is a cellulose ester derivative when R is (a), (c) or (d) or a cellulose ester or nitrocellulose derivative when R is (b) or (e).

ПРОИЗВОДНЫЕ ЦЕЛЛЮЛОЗЫ

VERFAHREN ZUR PFROPFPOLYMERISATION VON AETHYLENISCH UNGESAETTIGTEN MONOMEREN AUF CELLULOSEDERIVATE

IMPROVED PROCESS FOR DEPOLYMERIZING CELLULOSE ETHERS

... 1,249,814. Depolymerizing cellulose ethers. DOW CHEMICAL CORP. 2 June, 1969 [13 June, 1968], No. 27851/69. Heading C3A. A water-soluble cellulose ether is depolymerized by irradiating a solid water-soluble cellulose ether at 75‹ to 125‹ C. in the presence of oxygen with gamma radiation at a dose rate of 10 to 2000 Krad./hr. The cellulose ether, which may be irradiated in the form of a freeflowing particulate solid, is preferably given a total dose of 1À4 to 2À3 Mrads. of gamma irradiation. In particular, the viscosity of a watersoluble cellulose ether having a 2% by weight aqueous solution viscosity at 20‹ C. of 50- 4000 centipoises is reduced to give an ether with a 2% by weight viscosity of 2-25 centipoises. The cellulose ether may be an alkyl-, carboxyalkyl- or hydroxyalkyl ether, e.g. hydroxypropylmethyl cellulose.

Improvements in or relating to the production of stable dispersions of silicon dioxide in solutions of cellulose ethers and the sizing of textile yarns with such dispersions

A mixture which, when added to water, yields a stable dispersion of colloidal silica in a cellulose ether solution is prepared by adding an aqueous solution of an alkali-metal silicate to the reaction mixture in the preparation of the cellulose ether, the reaction mixture being neutralized with acid either after or both before and after the addition of the silicate solution so that the resulting mixture, when diluted with sufficient water to reduce the concentration of the cellulose ether to 0.25 per cent, gives an aqueous dispersion of colloidal silica having a pH within the range 5-9 and preferably 6-8. In an example, soda cellulose is mixed with sodium monochloracetate, an aqueous solution of sodium silicate is added and the mixture is neutralized with acetic acid and dried. In a second example, a mixture prepared in the same manner is purified by extraction with 60 per cent aqueous ethanol and dried again. In a third example, a mixture of sodium carboxymethyl cellulose and sodium silicate ...

Preparation of substituted high molecular weight products

A substituted, high molecular weight product which forms a gel in water of limited swelling capacity is prepared by reacting swollen gel grains of a copolymerizate of a polyhydroxy compound with a bifunctional aliphatic compound which may be interrupted with ether groups and which contains halogen atoms or epoxy groups at the ends, with substances having the general formula X1-R1-Z in the presence of alkali, wherein X1 represents chlorine, bromine or a 1,2-epoxy ethylene group, R1 represents methylene or ethylene and Z represents the carboxyl or sulpho group or a salt thereof or a tertiary amino group of the formula or salt thereof, wherein R2 and R3 are lower possibly hydroxyl group-substituted alkyl groups or lower alkylene groups which may be linked to form a 5 or 6 membered heterocyclic ring system. The polyhydroxy compound may be dextran, cellulose, hydroxyethyl cellulose, starch dextran, cellulose, hydroxyethyl cellulose, starch dextran, or sorbitol. The aliphatic ...

Improvements in and relating to the manufacture of cellulose ethers

In the manufacture of cellulose ethers the amount of caustic alkali exceeds the amount of cellulosic material taken, and the quantity of water ties between and , in these expressions a being the amount of caustic alkali employed to each part of cellulose taken. The initial material may be cellulose, or a conversion product or derivative in which the cellulose has not been degraded too far, or an ether of a lower stage of etherification. The etherification may be carried out in one or several stages, and in the presence of diluents such as benzol, and with the aid of catalysts such as copper, copper salts, ferrous sulphate or other iron salt. If a water-resistant ether is desired, the quantity of alkali should be 1.5 to 2.5 times the amount of cellulosic material taken. Specifications 163,017 and 163,018 are referred to.

DEPOLYMERIZATION OF CELLULOSE ETHERS BY ELECTRON IRRADIATION

... 1,255,723. Depolymerization of cellulose ethers by electron irradiation. DOW CHEMICAL CO. 17 June, 1969 [18 June, 1968], No. 30682/69. Heading C3A. Water-soluble cellulose ethers are depolymerized by irradiating a layer of a free-flowing, particulate, water-soluble cellulose ether having a uniform depth adjusted to within 10% of the penetration depth of the beam, with a beam of accelerated electrons and thoroughly blending the thus-treated cellulose ether. The beam may be accelerated by a 0.3 to 10 Mev. accelerator. Preferably a cellulose ether, the 2 weight per cent aqueous solution of which has a viscosity at 20‹ C. of 50 centipoises, is irradiated and blended to prepare an irradiated cellulose ether, the 2 weight per cent aqueous solution of which has a viscosity at 20‹ C. of 2 to 25 centipoises. The cellulose ether depolymerized may be a C 1-4 alkyl or hydroxyalkyl ether such as methyl-, ethyl-, hydroxyethyl-, hydroxypropylmethyl-, or hydroxyethylmethyl cellulose ; or a carboxyalkyl ...

GRANULES OF A CELLULOSE ETHER

... 1285776 Cellulose ether granules SHIKOKU KASEI KOGYO CO Ltd 26 Nov 1969 [28 Nov 1968] 57965/69 Heading C3A Porous granules of a cellulose ether which are soluble in water and which consist of fibrous crystals are prepared by evenly wetting particles of a cellulose ether which have a bulk density of at least 0À35 g./cm.3 and the major part of which have a particle size of less than 60 Tyler mesh, with from 30 to 150 parts by weight of an aqueous liquid per 100 parts by weight of the particles, granulating the wetted particles, drying the resulting granules to such an extent that the granules, after drying, have a bulk density of from 0À2 to 0À5 g./cm.3, and selecting from the dried granules those granules which have a size of from 20 to 80 Tyler mesh, whereby the desired granules are obtained. The cellulose ether may be sodium carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose or sodium carboxymethylhydroxyethyl cellulose and the aqueous liquid may be water ...

Improvements in or relating to the production of cellulose ethers

Cellulose ethers of low ether content suitable for working up into threads, films, plastic masses, and the like, are obtained by steeping cellulose in an aqueous solution of a water-soluble etherifying agent, pressing to remove excess of solution, shredding or otherwise disintegrating the pressed material and then treating it with caustic alkali solution, the etherification being continued until the product is capable of being brought into solution in dilute aqueous solutions of caustic alkali. The etherifying agent may be a water-soluble organic halogen compound such as an alkali metal chloroacetate, or glyceryl mono-chlorohydrin, or it may be an alkylating agent such as an alkali metal methyl sulphate. The cellulose may be loose or in sheets, and steeping may take place in batches or by continuously using it in roll or sheet form. Wetting agents may be used in the steeping process. The pressed mixture of cellulose and etherifying agent is placed in a shredder, and caustic alkali in aqueous ...

Controlled release compositions

Molecular coordination complexes are formed between a cellulose polymer and a non-polar solid aliphatic alcohol containing 8 to 18 carbon atoms optionally substituted with an aliphatic group containing 8 to 18 carbon atoms by solvating the polymer with a volatile polar solvent and reacting the solvated cellulose polymer directly with the aliphatic alcohol, preferably as a melt. The resulting composition may be dried. This constitutes the complex. The composition has utility as a matrix in controlled release formulations since it has a uniform porosity which may be varied.

VERFAHREN ZUR HERSTELLUNG VON WASSER AUFNEHMENDEN, ABER DARIN WEITGEHEND UNLOSLICHEN CELLULOSEATHERN

VERFAHREN ZUR HERSTELLUNG EINES CELLULOSISCHEN FORMKOERPERS

PROCEDURE FOR THE PRODUCTION OF CELLULOSEETHERN OUT CELLULOSE ACTIVATED WITH AMMONIA.

LINE FIBERS, O-ALKYLATING CELLULOSEETHER CONTAINING, AND PROCEDURE FOR THEIR PRODUCTION

NEW CELLULOSEETHER AND PROCEDURES FOR THEIR PRODUCTION

PROCESS FOR THE PREPARATION OF HIGH D.S. POLYSACCHARIDES

PREPARING CELLULOSE ETHERS IN A DIMETHOXYETHANE/(DISPERSING AUXILIARY) MEDIUM

CROSSLINKED PULPS, CELLULOSE ETHER PRODUCTS MADE THEREFROM, AND RELATED METHODS OF MAKING PULPS AND CELLULOSE ETHER PRODUCTS

Pulps, cellulose ether products, and methods of making pulps are described.

STARCH ETHERIFICATION METHOD

The invention relates to a method for preparing a starch ether. The method comprises mixing cellulose with an ionic liquid solvent to dissolve the starch, and then treating the dissolved starch with an etherifying agent in the presence of a base to form a starch ether, and subsequently separating t he starch ether from the solution, wherein both the dissolution and the etherification are carried out in the substantial absence of water.

REACTIVE CELLULOSE AND METHOD FOR MAKING SAME

L'invention propose une cellulose réactive, c'est-à-dire présentant notamment un degré de cristallinité très faible pouvant être obtenu avec un degré de pureté élevé. Cette nouvelle cellulose réactive trouve notamment une utilisation comme matière première dans la fabrication des éthers de cellulose. A cet effet, l'invention propose une cellulose réactive substituée par des groupes organiques selon un degré de substitution DS inférieur à 0,2, avantageusement compris entre 0,04 et 0,2.

Gas-solid chromatographic column

METHOD OF PREPARATION OF POLYSACCHARIDES PRESENTING A HIGH DEGREE OF SUBSTITUTION

Copolymers grafted on derivatives of cellulose

PREPARATION Of POLYSACCHARIDE ETHERS

PROCESS FOR THE MANUFACTURE OF WATER ADSORBING CELLULOSE ETHERS

Manufactoring process of derived from cellulose and products obtained by this process

MANUFACTURING METHOD OF ALKALI CELLULOSE CAPABLE OF CONTROLLING A POLYMERIZATION DEGREE OF HYDROXYPROPYLMETHYLCELLULOSE BY CONTROLLING OXYGEN CONSUMPTION AMOUNT OF ALKALI CELLULOSE, AND A MANUFACTURING METHOD OF CELLULOSE ETHER

PURPOSE: A manufacturing method of alkali cellulose and cellulose ether is provided to accurately control a polymerization degree of cellulose ether, and to able to stabilize production process and quality. CONSTITUTION: A manufacturing method of alkali cellulose of which polymerization degree is controlled comprises a step of de-polymerization of alkali cellulose obtained by contacting pulp and alkali solution, while measuring oxygen discharged amount of oxygen-containing gases and oxygen supplying amount in the oxygen-containing gases under the presence of alkali cellulose. The contact of the pulp and the alkali solution comprises at least adding the alkali solution into the pulp. The de-polymerization under the presence of oxygen-containing gases is conducted during and/or after adding the alkali solution. COPYRIGHT KIPO 2012 ...

METHOD FOR PRODUCING CELLULOSE ETHER DERIVATIVE

Disclosed is a method for selectively producing a cellulose ether derivative, which is extremely high in reaction efficiency of an organic halide compound. Specifically disclosed is a method for producing a cellulose ether derivative such as a carboxymethyl cellulose or a hydroxyethyl cellulose, wherein a low-crystalline powder cellulose having a crystallinity of not more than 50% is reacted with an organic halide compound such as ethylenechlorohydrine, a monohaloacetic acid or a salt thereof, in the presence of a base. COPYRIGHT KIPO & WIPO 2010 ...

METHOD FOR CONTINUOUSLY PRODUCING CELLULOSE ETHER

Provided is a method for continuously and efficiently producing cellulose ether with reduced undissolved components. More specifically, provided is a method for continuously producing cellulose ether, which comprises the following processes: a contact process for obtaining alkali cellulose by bringing pulp into contact with an alkali metal hydroxide solution in the presence of a solvent; a reaction process for carrying out a reaction between the alkali cellulose and an etherealizing agent; a partial condensation process for partially condensing, after the completion of the reaction, gas existing in a reactor used in the reaction above so as to separating the gas in to a liquid component and a gas component and sending some or the whole gas component back to the contact process to reuse some or the whole solvent; and a process for incinerating the liquid component and the gas component when the gas component not sent to the contact process still exists. COPYRIGHT KIPO 2016 ...

METHOD OF MODIFYING POLYMERS

A method of modifying a polymer having hydroxyl groups, selected from the group of polysaccharides and lignin,to give a modified polymer comprising the step of contacting said polymer with at least one organic phosphonate salt in order to chemically modify the polymer, said organic phosphonate salt being in a liquid phase. The method of polymer modification provides novel polymers. Modified polymers obtained from a polymer having been treated with at least one organic phosphonate salt are also disclosed. The modified polymers can be used as such or separated and optionally recovered from the solution, optionally being formed into particular materials or shapes.

Method for preparation of fine powdered cellulose ethers

The present invention relates to a method for preparing fine powdered cellulose ethers. In particular, the present invention relates to a method for preparing cellulose ethers in a cost-effective manner having high running efficiency of process, which comprises specifically regulating a reaction condition of each step to induce a particle refinement and significantly reduce a running load on a grinding process, in the reaction of treating finely pulverized celluloses with a caustic soda and reacting with an etherifying agent.

TREATMENT OF POLYSACCARIDES WITH DIALDEHYDES

A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40 weight percent of water, based on the total weight of polysaccharide and water, is beneficially conducted in a mixing device characterized by a FROUDE number FRof larger than 11, wherein ωis the angular frequency in sec-1 and is defined as 2*π*RPM/60, RPM is the rotational speed of the mixing device in revolutions per minute, Ris the radius of the mixing device in m, and g is the acceleration due to gravity in m/s. 2. The process of wherein the cellulose ether is treated with the dialdehyde in the presence of from 15 to 40 weight percent of water.3. The process of wherein the cellulose ether is a methyl cellulose or a hydroxy-C-alkyl methyl cellulose.4. The process of wherein the process is conducted in the presence of from 10 to 30 weight percent of water.5. The process of wherein the cellulose ether is a carboxymethyl cellulose claim 1 , carboxymethyl hydroxyethyl cellulose claim 1 , hydroxyethyl cellulose or ethyl hydroxyethyl cellulose.6. The process of wherein the process is conducted in the presence of from 20 to 40 weight percent of water.7. The process of wherein the mixing device has a FROUDE number FRof at least 50.8. The process of wherein the mixing device is a mixer with a mixing shaft.9. The process of wherein the mixing device is a continuous high speed horizontal paddle mixer.10. The process of wherein the dialdehyde is glyoxal.11. The process of wherein the treatment is conducted in the presence of an acid.12. The process of wherein the treatment is conducted in the presence of an aqueous salt solution comprising at least two salts claim 1 , one of the salts being a weak acid having a pKof from 5.5 to 8.5 claim 1 , and the other salt being the salt of the weak acid having a pKof from 5.5 to 8.5.13. The process of wherein the cellulose ether is milled and dried simultaneously after the treatment with a dialdehyde.14. A method of reducing lumps in a process for ...

Oxidative degradation of cellulose ethers

The invention relates to a method for producing a low-viscosity cellulose ether product, and to the use thereof.

Crosslinked Pulps, Cellulose Ether Products Made Therefrom; and Related Methods of Making Pulps and Cellulose Ether Products

Pulps, cellulose ether products, and methods of making pulps are described.

Porous water-soluble nonionic cellulose ether having excellent solubility and method for producing the same

There are provided a porous water-soluble nonionic cellulose ether having an average pore size of 36 μm or smaller and an average particle size of from 30 to 300 μm; and a method for continuously producing said cellulose ether comprising the steps of: pulverizing a first water-soluble nonionic cellulose ether to obtain a first pulverized product, and sieving the pulverized product through a sieve having an opening of from 40 to 400 μm to obtain a first residue-on-sieve and a first sieve-passing fraction, wherein a portion or all of the first residue-on-sieve containing particles having particle sizes smaller than and greater than the opening of the sieve is re-pulverized together with a second water-soluble nonionic cellulose ether in the step of pulverizing to obtain a second pulverized product, which is pulverized to obtain the cellulose ether as a second sieve-passing fraction containing the re-pulverized particles.

Cellulose Derivatives

The present description is related to methods for derivatizing cellulose pulp, and to products obtainable using said method.

CROSSLINKED PULPS, CELLULOSE ETHER PRODUCTS MADE THEREFROM; AND RELATED METHODS OF MAKING PULPS AND CELLULOSE ETHER PRODUCTS

Pulps, cellulose ether products, and methods of making pulps are described. 1. A pulp comprising:crosslinked cellulose fibers, wherein the pulp has a pulp R18 value greater than or equal to 93%.2. A pulp comprising: a resultant carboxymethyl cellulose (CMC) viscosity coefficient of variability (COV) of less than 30%; and', 'a pulp R18 value greater than 92%., 'crosslinked cellulose fibers, wherein the pulp has3. A pulp comprising: a water retention value (WRV) in a range between 0.8 g/g and less than 1.0 g/g; and', 'a pulp R18 value greater than 89%., 'crosslinked cellulose fibers, wherein the pulp has4. A crosslinked linters pulp havingan R18 value of 99 or greater, anda water retention value in a range between 0.6 g/g and 0.8 g/g.5. The pulp according to any of - , wherein the pulp includes hemicellulose at about 6 wt. % by dry mass or greater.6. The pulp according to any of - , wherein the pulp has a resultant CMC viscosity of greater than 56 centipoise (cP).7. The pulp according to any of - , wherein the pulp has a resultant CMC viscosity in a range of about 100 cP to about 400 cP.8. The pulp according to any of - , wherein the pulp has a resultant CMC weight average molecular weight greater than about 800 kilodalton (kDa).9. The pulp according to any of - , wherein the pulp has a resultant CMC weight average molecular weight in a range of about 900 kDa to about 4 ,000 kDa.10. The pulp according to any of - , wherein the pulp R18 value is in a range of 93% to about 100%.11. The pulp according to any of - , wherein the pulp has a resultant CMC polydispersity index (PDI) of greater than or equal to about 3.12. The pulp according to any of - , wherein the crosslinked cellulose fibers include a glycidyl ether crosslinker having two or more glycidyl groups.13. The pulp according to any of - , wherein the pulp has a water retention value (WRV) of greater than 0.8 g/g.14. The pulp according to any of and , wherein the pulp has a WRV in a range of 0.8 g/g to less than 1 ...

Process for preparing cellulose ether

The invention relates to a process for preparing a cellulose ether wherein the cellulose ether is prepared in the presence of an ether of the formula R1—O—R2 having a boiling point between 40 and 90° C., or of a solvent mixture comprising an ether and having a boiling point between 40 and 90° C., wherein R1 and R2 may be the same or different and are independently selected from an alkyl group. 110-. (canceled)11. A process for preparing a cellulose ether comprising the reaction of cellulose with an alkyl halogenide or carboxyalkyl halogenide at an elevated temperature wherein the cellulose ether is prepared in the presence of an ether of the formula R1—O—R2 having a boiling point between 40 and 90° C. , or of a solvent mixture comprising an ether and having a boiling point between 40 and 90° C. , wherein R1 is a methyl or ethyl group and R2 is a secondary or tertiary alkyl group.12. A process according to wherein the ether has a boiling point of between 50 and 75° C.13. A process according to wherein the ether has a solubility in water of not more than 55000 mg per kg of water.14. A process according to wherein R2 is a tertiary alkyl group.15. A process according to wherein the ether is selected from the group consisting of ethyl tert-butyl ether claim 11 , methyl tert-butyl ether claim 11 , and ethyl tert-amyl ether.16. A process according to wherein the ether is selected from the group consisting of ethyl tert-butyl ether and methyl tert-butyl ether.17. A process according to wherein the solvent mixture is an azeotrope.18. A process according to wherein the solvent mixture comprises an ether and water.19. A process according to wherein the ether is selected from the group consisting of ethyl tert-butyl ether claim 18 , methyl tert-butyl ether claim 18 , and methyl tert-amyl ether.20. A process according to wherein the ether is selected from the group consisting of ethyl tert-butyl ether and methyl tert-butyl ether.21. A process according to wherein the cellulose ...

Method for producing cellulose ether

Provided is a method for producing a cellulose ether including a drying step capable of continuously and stably drying a highly adhesive wet cellulose ether with high thermal efficiency without causing adhesive growth and solidification of the wet cellulose ether in a dryer. More specifically, the method for producing a cellulose ether includes a step of drying a wet cellulose ether having water content of more than 50% by weight in a rotary type through-flow dryer.

Environmentally Friendly Process For The Preparation Of Nanocellulose And Derivatives Thereof

The present disclosure relates to the environmentally preparation of nanocellulose and derivatives thereof. The invention further relates to the preparation of cellulose derivatives. 137-. (canceled)40. The process according to claim 39 , wherein the silanes in step viii are selected from mercaptopropyltrimethoxysilane claim 39 , allyltrimethoxysilane claim 39 , triethoxyvinylsilane claim 39 , hexadecyltrimethoxysilane and (3-aminopropyl)trimethoxysilane).41. The process according to claim 38 , wherein the reaction in step viii is carried out in the presence of an organic catalyst claim 38 , and wherein the organic catalyst is preferably an organic acid claim 38 , preferably selected from tartaric acid claim 38 , malic acid claim 38 , citric acid claim 38 , lactic acid and p-toluenesulfonic acid.42. The process according to claim 38 , wherein the organic catalyst is tartaric acid claim 38 , or (S)-tartaric acid claim 38 , or 5%-10% (S)-tartaric acid.43. The process according to claim 38 , wherein the reaction in step viii is carried out for at least 0.5 hour claim 38 , preferably for 1-14 hours claim 38 , and the reaction is carried out an elevated temperature claim 38 , preferably at 60-90° C.46. The process according to claim 38 , wherein the reaction is carried out in UV-light.47. The process of derivatising cellulosic material according to claim 38 , wherein the cellulosic material is prepared according to a process for the preparation of nanocellulose and derivatives thereof claim 38 , comprising the steps of:i. providing a cellulosic material,ii. mixing the cellulosic material with formic acid,iii. heating the reaction mixture to 80-110° C., preferably 90° C.iv. mechanically treating the reaction mixture by (i) mechanically stirring the reaction mixture, and/or (ii) sonication,v. diluting the reaction mixture with a solvent, and optionally neutralizing the reaction mixture to pH 6-8, and optionally separation and recovery of the formic acid by centrifugation ...

OPEN CHAIN MODIFIED CELLULOSIC PULPS AND METHODS OF MAKING AND USING THE SAME

The present disclosure generally relates to open chain modified cellulosic pulps and methods for making and using the same. More specifically, the open chain modified cellulosic pulps described herein may be made by oxidation of a cellulosic pulp, followed by reduction of the oxidized groups, resulting in a modified pulp having an improved open chain configuration that may be more efficiently converted into cellulosic derivative products. This disclosure further relates to improved cellulosic derivative products made therefrom, for example, cellulose esters, cellulose ethers, and regenerated cellulose products. 1. A method of making an open chain modified cellulosic pulp comprising:obtaining a cellulosic pulp,oxidizing the cellulosic pulp in at least one oxidizing step to form an oxidized cellulosic pulp,subjecting the oxidized cellulosic pulp to a reduction reaction in at least one reduction step to form an open chain modified cellulosic pulp.2. The method of claim 1 , wherein the cellulosic pulp has a copper number less than about 1 prior to the at least one oxidation step claim 1 , wherein the cellulosic pulp is oxidized to a copper number of greater than about 3 during the at least one oxidation step claim 1 , and wherein the oxidized cellulose is reduced to a copper number of less than about 0.5 during the reduction step.3. The method of claim 1 , wherein the at least one oxidizing step is carried out with an oxidizing agent chosen from at least one of periodate claim 1 , nitrogen dioxide claim 1 , and a peroxide and a metal catalyst.4. The method of claim 1 , wherein the at least one oxidizing step is carried out with hydrogen peroxide and a metal catalyst selected from copper or iron at a pH from about 2 to about 6.5. The method of claim 4 , wherein the at least one oxidizing step is carried out during at least one stage of a multi-stage bleaching process.6. The method of claim 1 , wherein the at least one reduction step is carried out with a reducing agent ...

Cellulose ethers

A cellulose ether which has from 4,000 to 10.000 anhydroglucose repeat units and is substituted with (a) on the average from 0.0003 to 0.08 moles, per mole of anhydroglucose unit, of a substituent comprising an alkyl or arylalkyl group having from 8 to 24 carbon atoms and (b) a substituent having the formula II wherein R 5 , R 6 and R 7 each independently are —CH 3 or —C 2 H 5 , R 8 is —CH 2 —CHOH—CH 2 — or —CH 2 CH 2 , A z− is an anion, and z is 1, 2 or 3 is useful in hair and skin care compositions.

Use of special screens in the preparation of cellulose powder

본 발명은, 셀룰로스 분말의 제조 방법에서 상이한 메쉬 또는 공극 크기의 2개 이상의 층을 포함하는 스크린의 용도뿐만 아니라, 셀룰로스 펄프의 분쇄 및 수득된 입자들의 체질을 연속식으로 수행할 수 있는 상기 제조 방법에 관한 것이다. The present invention relates to a process for the production of cellulose powders which comprises the use of a screen comprising two or more layers of different mesh or pore size as well as the use of the screening process for the pulverization of cellulosic pulp and the sieving of the obtained particles . 셀룰로스 분말, 상이한 메쉬 또는 공극 크기, 스크린, 스크리닝 층, 지지 층, 셀룰로스 분말의 제조 방법. Cellulosic powder, different mesh or pore size, screen, screening layer, support layer, cellulose powder.

具有优异溶解性的多孔水溶性非离子型纤维素醚及其生产方法

提供了具有36μm或更小的平均孔径和30μm至300μm的平均粒度的多孔水溶性非离子型纤维素醚；以及提供了连续生产所述纤维素醚的方法，所述方法包括以下步骤：粉碎第一水溶性非离子型纤维素醚以获得第一粉碎产物，以及通过具有40μm至400μm的开孔的筛将所述粉碎产物进行筛分以获得第一筛上残余物和第一过筛部分，其中在粉碎步骤中将一部分或全部的包含粒度小于和大于所述筛的开孔的颗粒的第一筛上残余物与第二水溶性非离子型纤维素醚一起再粉碎以获得第二粉碎产物，将其粉碎以获得作为包含再粉碎颗粒的第二过筛部分的纤维素醚。

纤维素醚

本发明涉及用于头发和皮肤护理组合物的纤维素醚，所述的纤维素醚具有4,000到10,000个葡糖酐重复单元，同时，用下列取代基取代：(a)平均0.0003到0.08摩尔每摩尔葡糖酐单元的含有8到24个碳原子的烷基或芳香烷基基团的取代基，和(b)具有通式II的取代基，其中，R 5 ，R 6 和R 7 各自独立地为－CH 3 或－C 2 H 5 ，R 8 为－CH 2 －CHOH－CH 2 －或－CH 2 CH 2 －，A Z－ 为阴离子，z为1、2或3。

制备碱纤维素和纤维素醚的方法

提供一种高效地制备其中具有均匀碱分布的碱纤维素的方法。更具体地，提供了：一种制备碱纤维素的方法，包括在管道型接触器中使纸浆与碱金属氢氧化物溶液持续接触以产生接触混合物，并将该接触混合物排水的步骤；以及一种制备纤维素醚的方法，包括使用该碱纤维素；一种用于制备碱纤维素的装置，包括管道型接触器，在其一端具有至少一个用于导入纸浆和碱金属氢氧化物溶液的入口，在其另一端具有至少一个用于排出接触混合物的出口，其中纸浆和金属氢氧化物溶液在彼此接触产生接触混合物的同时从一端运动到另一端；以及用于从接触器排出的接触混合物分离出料块的排水器。

Methods for Preparing Cellulose Ether

본 발명에 따르면, 알칼리 셀룰로오스 중의 알칼리 분포가 균일한 알칼리 셀룰로오스를 효율적으로 제조하는 방법을 제공한다. INDUSTRIAL APPLICABILITY According to the present invention, there is provided a method for efficiently producing an alkali cellulose having an even alkali distribution in an alkali cellulose. 또한, 본 발명은 버킷 컨베이어형 접촉기 내에서 펄프와 알칼리 금속 수산화물 용액을 연속적으로 접촉시키는 공정과, 얻어진 접촉물을 탈액하는 탈액 공정을 포함하는 알칼리 셀룰로오스의 제조 방법을 제공한다. 또한, 본 발명은 상기 알칼리 셀룰로오스를 사용하는 셀룰로오스 에테르의 제조 방법을 제공한다. 또한, 본 발명은 한쪽 단에 펄프와 알칼리 금속 수산화물 용액의 투입구를 하나 이상 설치하고, 다른쪽 단에 접촉물의 취출구를 하나 이상 설치하여, 펄프와 알칼리 금속 수산화물 용액을 상기 한쪽 단으로부터 상기 다른쪽 단에 접촉시키면서 이동시켜, 상기 다른쪽 단으로부터 취출할 수 있는 버킷 컨베이어형 접촉기와, 상기 취출구로부터 취출된 접촉물로부터 케이크를 분리하기 위한 탈액 수단을 구비하는 알칼리 셀룰로오스의 제조 장치를 제공한다. The present invention also provides a method for producing alkali cellulose comprising a step of continuously contacting a pulp and an alkali metal hydroxide solution in a bucket conveyor type contactor, and a dehydration step of releasing the obtained contact. The present invention also provides a method for producing a cellulose ether using the alkali cellulose. In addition, the present invention is provided with at least one inlet for the pulp and alkali metal hydroxide solution at one end, and at least one outlet for contacting the contact at the other end, so that the pulp and alkali metal hydroxide solution from the other end to the other end. A bucket conveyor type contactor which is moved while being brought into contact with the other end, and can be taken out from the other end, and an apparatus for producing alkaline cellulose is provided with a liquid-removing means for separating the cake from the contact taken out from the outlet. 알칼리 셀룰로오스, 알칼리 분포, 버킷 컨베이어형 접촉기, 펄프, 알칼리 금속 수산화물 용액, 셀룰로오스 에테르 Alkali Cellulose, Alkali Distribution, Bucket Conveyor Contactor, Pulp, Alkali Metal Hydroxide Solution, Cellulose Ether

Method for preparation of fine powdered Cellulose ethers

본 발명은 미세화된 셀룰로오스에테르의 제조방법에 관한 것으로서, 더욱 상세하게는 잘게 분쇄한 셀룰로오스에 가성소다를 처리한 후, 에테르화제를 반응시킴에 있어 단계별 반응조건을 특이성 있게 조절하여 입자의 미세화를 유도하여 분쇄공정에서의 운전부하를 현격하게 감소시켜 공정의 운전 효율성을 높인 경제적으로도 유리한 셀룰로오스에테르의 제조방법에 관한 것이다. The present invention relates to a method for producing micronized cellulose ether, and more particularly, after treating caustic soda with finely pulverized cellulose, inducing the miniaturization of particles by specifically controlling the stepwise reaction conditions in the reaction of the etherification agent. Therefore, the present invention relates to a method for producing an economically advantageous cellulose ether which significantly reduces the operating load in the crushing process to increase the operating efficiency of the process.

Obtaining microcrystaline cellulose

FIELD: chemistry. SUBSTANCE: microcrystalline cellulose is obtained by obtained processing with high shearing force at higher temperature and higher pressure of reaction mixture, which consists of cellulose material, compound, containing active oxygen, and water, during period of time, efficient for depolymerisation of cellulose material to medium degree of depolymerisation 400 or lower, either where pressure on product output is within the range approximately from 137.9 to 10342.1 kPa, or where pH value of reaction mixture in process of extrusion is in interval approximately from 8 to 2. Mixture can be subjected to additional depolymerisation after being processed with high shearing force, by standing it without cooling. Hydrogen peroxide is suitable compound, containing active oxygen. Extruder is typical device of high shearing force. EFFECT: improved method of obtaining microcrystalline cellulose. 32 cl, 5 ex, 4 tbl ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (11) 2 343 160 (13) C2 (51) ÌÏÊ C08B 15/00 C08B 16/00 (2006.01) (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2005101358/04, 24.07.2003 (30) Êîíâåíöèîííûé ïðèîðèòåò: 26.07.2002 US 60/398,803 (73) Ïàòåíòîîáëàäàòåëü(è): ÔÌÊ ÊÎÐÏÎÐÅÉØÍ (US) (43) Äàòà ïóáëèêàöèè çà âêè: 10.08.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 24.07.2003 (72) Àâòîð(û): ÊÎÏÅÑÊÈ Ðîáåðò (US), ÖÀÉ Àëüáåðò Äæ. (US), ÐÓÑÇÊÀÉ Òîìàñ À. (US) (45) Îïóáëèêîâàíî: 10.01.2009 Áþë. ¹ 1 2 3 4 3 1 6 0 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 6392034 B1, 21.05.2002. CA 2304104 A1, 01.04.1999. US 4409384 A, 11.10.1983. US 6391368 B1, 21.05.2002. SU 1792942 A1, 07.02.1993. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 20.01.2005 2 3 4 3 1 6 0 R U (87) Ïóáëèêàöè PCT: WO 2004/011501 (05.02.2004) C 2 C 2 (86) Çà âêà PCT: US 03/22988 (24.07.2003) Àäðåñ äë ïåðåïèñêè: 129090, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà ...

Polysaccharide derivatives, their preparation and use

Gegenstand der vorliegenden Erfindung sind Polysaccharid-Derivate, bestehend aus einem Biopolysaccharid-Grundgerüst und damit über Etherbrücken verbundenen organischen Resten mit einen Molekulargewicht < 5000. Als Biopolysaccharid-Komponente werden bevorzugt beta(1,4)- und/oder beta(1,3)-Glucan-Einheiten eingesetzt, wie z. B. Xyloglucane, Glucomannane, Galactomannane wie Guar Gum oder Locust Bean Gum, Xanthan Gum, Carrageenane, Alginate und Pektine. Von der Erfindung wird ebenfalls ein Verfahren zur Herstellung dieser Polysaccharid-Derivate umfasst, bei der die Biopolysaccharid-Komponente basenkatalysiert mit einer N-Alkylmaleamidsäure oder einem Salz davon umgesetzt wird und wobei die Maleamid-Komponente zusätzlich vor oder auch nach der Reaktion mit der Biopolysaccharid-Komponente cyclisiert werden kann. Aufgrund der insbesondere damit verbundenen Variabilität der erhältlichen Polysaccharid-Derivate eignen sich diese insbesondere zur Bindung an Cellulosefasern, was vor allem im Hinblick auf die Textilbehandlung interessant ist und was die beanspruchten Polysaccharid-Derivate als bioabbaubare Weichspüler besonders geeignet macht. The present invention relates to polysaccharide derivatives consisting of a biopolysaccharide skeleton and organic radicals linked by ether bridges with a molecular weight <5000. The preferred biopolysaccharide components are beta (1,4) - and / or beta (1,3) Glucan units used, such as. Xyloglucans, glucomannans, galactomannans such as guar gum or locust bean gum, xanthan gum, carrageenans, alginates and pectins. The invention likewise encompasses a process for the preparation of these polysaccharide derivatives, in which the biopolysaccharide component is base-catalyzed with an N-alkylmaleamic acid or a salt thereof, and wherein the maleamide component additionally before or else after the reaction with the biopolysaccharide Component can be cyclized. Due to the particular associated variability of the available polysaccharide ...

Homogeneous synthesis of cellulose ethers in ionic liquids

본 발명에서는, 셀룰로스 에터의 균질 합성을 위한 간단하고 신규한 방법이 기술된다. 이온성 액체는 용매로서 뿐만 아니라, 셀룰로스의 균질 에터화를 위한 반응 매질로서도 사용된다. 용해된 셀룰로스를, 유기 또는 무기 염기의 부재 및 적정량의 물의 존재 및/또는 부재 하에 에터화제로 처리한다. 수득된 셀룰로스 에터는, 새로운 특성 및 용도를 유발하는, 중합체 쇄 상에서의 새로운 치환 분포를 나타낸다. In the present invention, a simple and novel method for the homogeneous synthesis of cellulose ethers is described. Ionic liquids are used not only as solvents, but also as a reaction medium for homogenization of cellulose. The dissolved cellulose is treated with an etherifying agent in the presence and / or absence of an organic or inorganic base and an appropriate amount of water. The cellulose ethers obtained exhibit a new substitution distribution on the polymer chain, leading to new properties and uses.

Manufacturing method of molten cellulose derivative composition and tmolten cellulose derivative using thereof

The present invention relates to a method for producing a melted cellulose derivative and a melted cellulose derivative prepared therefrom. More specifically, the present invention relates to a method for manufacturing a melted cellulose derivative, which is capable of maximizing energy efficiency by introducing a plasticizer and an antioxidant into a cellulose ester, To a method for producing a molten cellulose derivative which is environmentally friendly and has improved mechanical properties and color characteristics without using a toxic solvent and a molten cellulose derivative produced therefrom.

METHOD OF MANUFACTURING LOW SUBSTITUTE CELLULOSE ETHERS

Methods for Preparing Alkali Cellulose and Cellulose Ether

본 발명에 따르면, 알칼리 셀룰로오스 중의 알칼리 분포가 균일한 알칼리 셀룰로오스를 효율적으로 제조하는 방법을 제공한다. According to the present invention, there is provided a method for efficiently producing alkali cellulose having a uniform alkali distribution in alkali cellulose. 또한, 본 발명은 로터리 피더형 접촉기 내에서 펄프와 알칼리 금속 수산화물 용액을 연속적으로 접촉시키는 공정과, 얻어진 접촉물을 탈액하는 탈액 공정을 포함하는 알칼리 셀룰로오스의 제조 방법을 제공한다. 또한, 상기 알칼리 셀룰로오스를 사용하는 셀룰로오스 에테르의 제조 방법을 제공한다. 또한, 투입구 및 취출구를 갖는 환상 하우징과, 하우징 내를 하우징에 따라 환상으로 회전 가능한, 둘레 방향으로 배치된 복수의 필터 셀을 갖는 환상 접촉 드럼과, 환상 접촉 드럼의 직경 방향 내부에 배치되어 필터를 통과한 여과액을 수집하는 여과액 배출관을 구비하는 로터리 피더형 접촉기와, 상기 취출된 케이크를 탈액하기 위한 탈액 수단을 구비하는 알칼리 셀룰로오스의 제조 장치를 제공한다. The present invention also provides a method for producing an alkaline cellulose comprising a step of continuously contacting a pulp and an alkali metal hydroxide solution in a rotary feeder contactor, and a step of dehydrating the obtained contact. In addition, a method for producing a cellulose ether using the alkali cellulose is provided. Further, an annular contact drum having an inlet and an outlet, an annular contact drum having a plurality of filter cells arranged in a circumferential direction rotatable in an annular manner along the housing, and disposed inside the radial direction of the annular contact drum to filter the filter. Provided is a rotary feeder-type contactor having a filtrate discharge pipe for collecting the filtrate that has passed, and an apparatus for producing alkaline cellulose, which has a dewatering means for dewatering the taken out cake. 알칼리 셀룰로오스, 알칼리 분포, 로터리 피더형 접촉기, 펄프, 알칼리 금속 수산화물 용액, 셀룰로오스 에테르 Alkali cellulose, alkali distribution, rotary feeder type contactor, pulp, alkali metal hydroxide solution, cellulose ether

Method for producing water-soluble nonionic cellulose ether excellent in storage stability

본 발명은 보존 안정성이 우수한 수용성 비이온성 셀룰로오스 에테르를 제공한다. 알칼리 셀룰로오스와 에테르화제를 반응시켜 조 셀룰로오스 에테르를 얻는 에테르화 공정과, 상기 조 셀룰로오스 에테르를 물로 세정하여 세정 완료 셀룰로오스 에테르를 얻는 세정 공정과, 상기 세정 완료 셀룰로오스 에테르를 건조하는 건조 공정과, 상기 건조 중 또는 건조 후, 상기 셀룰로오스 에테르를 분쇄하는 분쇄 공정을 포함하여 이루어지는 수용성 비이온성 셀룰로오스 에테르의 제조 방법이며, 상기 세정 공정 중 또는 상기 세정 공정 이후의 공정에 있어서, 최종 제품이 되는 수용성 비이온성 셀룰로오스 에테르의 2 질량％ 수용액의 pH가 7.0 내지 10.5가 되도록 조정하기 위해 pH 조정제를 첨가하는 것을 포함하는 수용성 비이온성 셀룰로오스 에테르의 제조 방법을 제공한다. The present invention provides a water-soluble nonionic cellulose ether having excellent storage stability. An etherification step of reacting an alkali cellulose and an etherification agent to obtain crude cellulose ether, a washing step of washing the crude cellulose ether with water to obtain a washed cellulose ether, a drying step of drying the washed cellulose ether, and the drying A method for producing a water-soluble nonionic cellulose ether comprising a pulverizing step of pulverizing the cellulose ether during or after drying, and a water-soluble nonionic cellulose ether that becomes a final product during or after the cleaning process. There is provided a method for producing a water-soluble nonionic cellulose ether comprising adding a pH adjuster to adjust the pH of a 2% by mass aqueous solution of the solution to be 7.0 to 10.5.

Method for producing polysaccharide derivative and lignin derivative

Polysaccharide derivatives and manufacturing method thereof

본 발명은 건축 재료 및 화장품 등에 사용되는 증점제의 중요 성분인 기존의 셀룰로오스 에테르류보다 저농도에서 우수한 증점성을 갖는 새로운 다당류 유도체 및 이의 제조 방법을 제공하는 것을 목적으로 한다. 본 발명은, 하기 화학식의 구조를 갖는 다당류 유도체를 제공한다. 상기 R 1 은 술폰산염이고, 상기 R 2 는 탄소 수 20 또는 24의 알킬기이다. An object of the present invention is to provide a novel polysaccharide derivative having superior thickening properties at a lower concentration than conventional cellulose ethers, which are important components of thickeners used in building materials and cosmetics, and a method for preparing the same. The present invention provides a polysaccharide derivative having a structure of the following formula. The R 1 is a sulfonic acid salt, and R 2 is an alkyl group having 20 or 24 carbon atoms.

Essentially Fibre-Free Cellulose Ether with Improved Water Retention, Method for the Production and Use Thereof

본 발명은 현저하게 탄성을 나타내는 실질적으로 섬유가 없는 카르복시메틸 셀룰로스의 제조 방법에 관한 것이다. 본 발명은 또한 이들의 초흡수성 재료로서의 용도, 및 화장품, 제약 및 식품 분야에 적합한 유동학적 성질 및 보수성을 조절하기 위한 보조 물질 및 공업 분야용 보조 물질로서, 예를 들면 도료, 케이블의 실링용 또는 터널공사 및 토목 및 지하 공학에 사용하기 위한 첨가제로서의 이들의 용도에 관한 것이다. The present invention relates to a process for the preparation of substantially fiber free carboxymethyl cellulose which is remarkably elastic. The present invention also relates to their use as superabsorbent materials and to auxiliary fluids for adjusting the rheological properties and water retention which are suitable for the cosmetic, pharmaceutical and food sectors and as auxiliary materials for industrial applications, for example for the sealing of paints, cables or And their use as additives for use in tunnel construction and civil and underground engineering.

Polymeric carrier bound ligands

A process for bonding a ligand to a carrier through the use of a pyrimidine derivative of the formula: ##STR1## in which R 1 , R 2 , R 3 and R 4 are each independently hydrogen, hydroxyl, halogen, lower alkyl, lower alkoxy, loweralkylthio, loweracylamino, nitro, cyano, carboxamido, loweralkylsulphonyl, loweralkoxycarbonyl, phenyl, trifluoromethyl or chloromethyl, the ligand or the carrier containing at least one functional group that reacts with the pyramidine derivative.

Method for the production of easily wetted, water-soluble, powdered at least alkylated non-ionic cellulose ethers

본 발명은, 함유된 모든 하이드록실기중 10% 이상이 알킬화되고 45 내지 95℃의 물에 응집될 수 있는 적어도 알킬화된 비이온성 셀룰로즈 에테르를 제조하는 방법에 관한 것이다. 본 발명은 셀룰로즈 에테르의 제조를 위해 고체, 액체 및/또는 용해된 형태의 하나 이상의 계면활성제를 셀룰로즈에 첨가하는데 그 특징이 있다. The present invention relates to a process for producing at least alkylated nonionic cellulose ethers wherein at least 10% of all hydroxyl groups contained can be alkylated and aggregate in water at 45-95 ° C. The present invention is characterized by the addition of one or more surfactants to the cellulose in solid, liquid and / or dissolved form for the preparation of cellulose ethers.

Use of special screens in the preparation of cellulose powder

The present invention refers to the use of screens comprising at least two layers of different mesh or pore size in a cellulose powder preparation method as well as to said method, wherein grinding the cellulose pulp and sieving the obtained particles can be carried out on-line.

Polysaccharide derivatives and manufacturing method thereof

본 발명은 건축 재료 및 화장품 등에 사용되는 증점제의 중요 성분인 기존의 셀룰로오스 에테르류보다 저농도에서 우수한 증점성을 갖는 새로운 다당류 유도체 및 이의 제조 방법을 제공하는 것을 목적으로 한다. 본 발명은, 하기 화학식의 구조를 갖는 다당류 유도체를 제공한다. 상기 R 1 은 술폰산염이고, 상기 R 2 는 탄소 수 20 또는 24의 알킬기이다.

Cellulose ether and method for preparing the same

(57)【要約】 本発明は、（ａ）シルケット加工及び回収されたセルロースパルプを得る工程、及び（ｂ）シルケット加工及び回収されたセルロースパルプを、セルロースエーテルに転化する工程を含むセルロースエーテルの調製方法を提供する。セルロースパルプが南方軟材クラフトである場合、シルケットセルロースパルプは１２cPよりも大なるＴＡＰＰＩ２３０ｏｍ-８９粘度を有する。シルケットセルロースパルプは、典型的には、実質的にセルロースIIIを含まない。本方法により調製されるシルケットセルロースパルプは、非シルケットセルロースパルプよりも、結晶化セルロースIIのパーセンテージが高く、結晶化領域が小さい。本発明はまた、（ａ）シルケット加工及び回収されたセルロースパルプを得る工程、及び、（ｂ）シルケット加工されたパルプを処理してセルロースフロックを形成する工程を含む、セルロースフロックの調製方法を提供する。

Treatment of polysaccarides with dialdehydes

폴리사카라이드와 물의 총 중량을 기준으로 하여, 물 10 내지 40중량%의 존재하에 폴리사카라이드를 디알데히드로 처리하는 방법은, 프루드 수 FR w 가 11을 초과함을 특징으로 하는 혼합 장치[여기서, ω w 는 각 진동수(sec -1 )이고, 2*π*RPM/60으로 정의되고; RPM은 상기 혼합 장치의 회전 속도(분당 회전수)이고; R w 는 상기 혼합 장치의 반경(m)이고; g는 중력으로 인한 가속도(㎨)이다]에서 유리하게 수행한다. A process for treating a polysaccharide with a dialdehyde in the presence of from 10 to 40% by weight, based on the total weight of the polysaccharide and water, characterized in that the Prud number FR w exceeds 11, Where w is the angular frequency (sec -1 ) and is defined as 2 * [pi] * RPM / 60; RPM is the rotation speed (revolutions per minute) of the mixing device; Rw is the radius (m) of said mixing device; g is the acceleration due to gravity ([phi]).

USE OF MODIFIED CELLULOSIC DERIVATIVES AS AN ORGANIC PHASE-ENHANCING AGENT OF AN NAIL VARNISH COMPOSITION.

Method and apparatus for collecting gas chromatographic fractions

Improvements in the treatment of cellulose derivatives

Process for the manufacture of cellulose ethers

Manufacturing process for new cellulose derivatives

PROCESS FOR THE PREPARATION OF POLYSACCHARIDES PRESENTING A HIGH DEGREE OF SUBSTITUTION

DERIVE DE POLYSACCHARIDES A DEGRES DE SUBSTITUTION ELEVES. ON PREPARE DES DERIVES DE POLYSACCHARIDES TRES SUBSTITUES, SOLUBLES DANS L'EAU ET POUVANT GONFLER DANS L'EAU, DANS DES SOLUTIONS AQUEUSES TRES CONCENTREES EN UTILISANT DES CONDITIONS DE REACTION BIEN DEFINIES ET CONTROLEES. LES DERIVES SONT OBTENUS AVEC UN BON RENDEMENT ET PEUVENT ETRE FACILEMENT ISOLES SOUS FORME SOLIDE. PREPARATION D'AGENTS DE RETENTION DE PIGMENTS DANS DES PAPIERS ET ANALOGUES. DERIVATIVES OF POLYSACCHARIDES AT HIGH DEGREES OF SUBSTITUTION. VERY SUBSTITUTE POLYSACCHARIDE DERIVATIVES, SOLUBLE IN WATER AND CAPABLE OF SWELLING IN WATER, ARE PREPARED IN HIGHLY CONCENTRATED AQUEOUS SOLUTIONS USING WELL DEFINED AND CONTROLLED REACTION CONDITIONS. THE DERIVATIVES ARE OBTAINED WITH A GOOD EFFICIENCY AND CAN BE EASILY ISOLATED IN A SOLID FORM. PREPARATION OF PIGMENT RETENTION AGENTS IN PAPERS AND THE LIKE.

Cellulose derivatives

本说明书涉及纤维素浆的衍生化方法，并涉及使用所述方法能够获得的产品。

Patent FR2304353B1

Process for the production of carbohydrate ethers

PROCESS FOR PREPARING LOW SUBSTITUTED CELLULOSIC ETHERS

Alkalization of cellulose and manufacturing of cellulose ethers

The manufacture method of alkali cellulose

本发明提供一种纤维素的聚合度的降低少、并且碱的使用量少的碱纤维素的制造方法，以及使用所得的碱纤维素的纤维素醚的制造方法。本发明提供[1]一种碱纤维素的制造方法，其具有：对含纤维素的原料(I)进行粉碎机处理而得到含有结晶度为10～55％的纤维素的含纤维素的原料(II)的工序1，以及在所得的含纤维素的原料(II)中添加相对于构成该纤维素的葡糖酐单元1摩尔为0.6～1.5摩尔的碱化合物、以及相对于该纤维素为20～100质量％的水而得到碱纤维素的工序2；并提供[2]一种纤维素醚的制造方法，其包括使利用上述制造方法制造而得的碱纤维素与醚化剂反应的工序。

Reactive cellulose and method for making same

The invention concerns reactive cellulose, i.e. having in particular a very low degree of crystallinity obtainable with a high degree of purity. Said novel reactive cellulose is particularly used as raw material for making cellulose ethers. The invention is characterised in that the reactive cellulose is substituted by organic groups according to a degree of substitution DS less than 0.2, advantageously ranging between 0.04 and 0.2.

Controlled release compositions

A B S T R A C T Title: Controlled Release Compositions Molecular coordination complexes are formed between a cellulose polymer and a non-polar solid aliphatic alcohol containing 8 to 18 carbon atoms optionally substituted with an aliphatic group containing 8 to 18 carbon atoms by solvating the polymer with a volatile polar solvent and reacting the solvated cellulose polymer directly with the aliphatic composition may be dried. This con-stitutes the complex. The composition has utility as a matrix in controlled release formu-lations since it has a uniform porosity which may be varied.

Efficient process for preparing an ester of a cellulose ether

A process for producing an esterified cellulose ether can be efficiently be produced by reacting a moist cellulose ether having a water content of at least 10 percent, based on the weight of the moist cellulose ether, with an aliphatic monocarboxylic acid anhydride, a dicarboxylic acid anhydride or a combination thereof. Further improvements in efficiency and reduction in process steps are achieved in a process for producing an esterified cellulose ether which comprises the steps of a) reacting cellulose with an alkaline material to produce alkali cellulose, b) reacting the produced alkali cellulose with one or more etherifying agents and washing the produced cellulose ether to obtain a moist cellulose ether having a water content of at least 10 weight percent, and c) reacting the moist cellulose ether with an aliphatic monocarboxylic acid anhydride and/or a dicarboxylic acid anhydride and with a depolymerizing agent.

PROCEDURE TO MANUFACTURE A CELLULOSE MOLDED OBJECT.

PARA FABRICAR UN CUERPO DE MOLDEO DE CELULOSA, SE PRESIONA UNA SOLUCION CELULOSICA DE AMINOXIDO A TRAVES DE UNA TOBERA O DE UNA RENDIJA. ESTA SOLUCION ES CONDUCIDA DESPUES POR UNA RANURA DE AIRE Y, FINALMENTE, COAGULADA EN UN BAÑO DE RELLENO. SEGUN LA INVENCION, NO SE LLEVA A CABO EL ESTIRAMIENTO EN LA RANURA DE AIRE, ES DECIR, LA RELACION ENTRE LA VELOCIDAD DE DESARROLLO Y LA VELOCIDAD DE SALIDA ES COMO MUCHO 1. EL ESTIRAMIENTO Y EL EMBUTIDO PROFUNDO DE LA CELULOSA SE LLEVA A CABO CUANDO ESTA ESTA COAGULADA. TO MANUFACTURE A CELLULOSE MOLDING BODY, A CELLULOSIC AMINOXIDE SOLUTION IS PRESSED THROUGH A NOZZLE OR RENDER. THIS SOLUTION IS THEN DRIVEN BY AN AIR SLOT AND, FINALLY, COAGULATED IN A FILLING BATH. ACCORDING TO THE INVENTION, THE STRETCHING IN THE AIR SLOT IS NOT CARRIED OUT, THAT IS, THE RELATION BETWEEN THE DEVELOPMENT SPEED AND THE OUTPUT SPEED IS LIKE A LOT 1. THE STRETCHING AND THE DEEP CELLULOSE SAUSAGE IS CARRIED OUT WHEN IS IT COAGULATED.

Process for the production of copolymers

Oxidative decomposition of cellulose ether

Chromatographic separation method and apparatus

Trimethylsilylation of cellulose

This invention provides a method for the preparation of trimethylsilyl cellulose ethers. The method comprises reacting cellulose with hexamethyldisilazane in the presence of a small amount of catalyst, wherein the catalyst is acetamide, acetamide and an ammonium halide, N,N-dimethylformamide and an ammonium halide, N,N-dimethylformamide and trimethylsilyl chloride, 2-oxazolidinone and an ammonium halide, or a mixture thereof.

METHOD FOR MODIFICATION OF POLYMERS

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 150 262 A (51) МПК C08B 11/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015150262, 26.05.2014 (71) Заявитель(и): МЕТСЯ ФИБРЕ ОИ (FI), СТОРА ЭНСО ОИЙ (FI) Приоритет(ы): (30) Конвенционный приоритет: 24.05.2013 FI 20135569 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 24.12.2015 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2014/188081 (27.11.2014) R U (54) СПОСОБ МОДИФИКАЦИИ ПОЛИМЕРОВ (57) Формула изобретения 1. Способ модификации полимера, содержащего гидроксильные группы, с получением модифицированного полимера, включающий стадию приведения указанного полимера в контакт с по меньшей мере одной солью органического фосфоната с обеспечением химической модификации указанного полимера, причем указанная соль органического фосфоната находится в жидкой фазе, и при этом указанные соли органических фосфонатов имеют Формулу III: , где R1 выбран из водородного радикала, линейного или разветвленного алкильного радикала, содержащего от 1 до 20 атомов углерода, арильного радикала, содержащего от 4 до 24 атомов углерода, и R2 представляет собой катион, выбранный из группы, состоящей из Н+, Li+, Na+, K+, Rb+, Cs+, Fr+, Cu+, Ag+, замещенного и незамещенного аммония, фосфония и сульфония, и пятичленных гетероциклов, содержащих 1, 2 или 3 гетероатома, и их смесей. 2. Способ по п. 1, отличающийся тем, что R2 представляет собой пятичленный Стр.: 1 A 2 0 1 5 1 5 0 2 6 2 A Адрес для переписки: 190000, Санкт-Петербург, Box-1125, "ПАТЕНТИКА" 2 0 1 5 1 5 0 2 6 2 FI 2014/050412 (26.05.2014) R U (43) Дата публикации заявки: 30.06.2017 Бюл. № 19 (72) Автор(ы): КИНГ Алистер В.Т. (FI), СЕЛДЖ Кристоф (FI), КАРУНЕН Пиркко (FI), МАТИКАЙНЕН Йорма (FI), КИЛПЕЛЯЙНЕН Илкка (FI) гетероцикл, выбранный из группы, состоящей из метилпирролидиния, изотиазолия, изоксазолия, оксазолия, пирролия и тиофения, пиридиния, пиридазиния, пиримидиния, пиразиния, имидазолия, пиразолия, ...

Methods and apparatus to analyze and adjust age demographic information.

Se proporciona un éter de celulosa porosa no iónico soluble en agua que tiene un tamaño de poro promedio de 36 µm o menor y un tamaño de partícula promedio de desde 30 hasta 300 µm; y un método para producir continuamente dicho éter de celulosa que comprende las etapas de: pulverizar un primer éter de celulosa no iónico soluble en agua para obtener un primer producto pulverizado, y cribar el producto pulverizado a través de una criba que tiene una abertura de desde 40 hasta 400 µm para obtener un primer un residuo en tamiz y una primera fracción pasante de tamiz, en donde una porción o todo el primer residuo en tamiz que contienen partículas que tienen tamaños de partícula más pequeños y mayores a la abertura de la criba se re-pulverizan juntos con un segundo éter de celulosa no iónico soluble en agua e la etapa de pulverización para obtener un segundo producto pulverizado que se pulveriza para obtener el éter de celulosa como una segunda fracción pasante de tamiz que contiene las partículas re-pulverizadas.

Method for preparing cellulose ethers, cellulose ethers prepared by said method and architectural finishing material comprising same

본 발명은 본 발명은 (1) 셀룰로오스를 알칼리화제와 반응시켜 알칼리화된 셀룰로오스를 얻는 단계; (2) 상기 알칼리화된 셀룰로오스를 에테르화 반응시켜 슬러리 상태의 셀룰로오스 에테르를 얻는 단계; 및 (3) 상기 에테르화 반응이 완료된 슬러리 상태의 셀룰로오스 에테르에 계면활성제를 투입하는 단계를 포함하는 셀룰로오스 에테르의 제조방법, 상기 방법에 의해 제조된 셀룰로오스 에테르 및 이를 포함하는 건축 마감재에 관한 것이다. 본 발명에 따르면, 냉수 용해성이 향상된 셀룰로오스 에테르를 제조하는 방법이 제공될 수 있고, 상기 방법에 의해 제조된 셀룰로오스 에테르를 포함함으로써 냉수와 배합시 럼프 발생량이 최소화되고 표면 작업성이 향상된 건축 마감재를 제공할 수 있다.

Preparation of molecular coordinating complex

O-alkylated cellulose and process for the preparation thereof

The invention concerns an O-alkylated cellulose I of formula I wherein n is an integer from 100 to 100,000 R is a hydrogen, a group of formula AX in which A is a bivalent bridging radical comprising from 1 to 100 carbon atoms and, optionally, from 1 to 50 heteroatoms selected among halogens, oxygen, nitrogen, sulphur, boron, phosphorus and silicon, and X is a hydrogen, a functional group selected among vinyl, aziridino, epoxy, glycidyl, halo, acyloxy, alkylsulphonate, arylsulphonate, trialkylsiloxy, sulphate, phosphate, ethynyl, amino, mono-, di- amino, trialkylammonium, carboxy, sulphonic, phosphonic, formyl, alkylsulphonylamino, arylsulphonylamino, aminosulphonyl, acylamino, imino, mono-, di(carboxyalkyl)imino, guanidino, nitro, cyano, alkoxycarbonyl, aminocarbonyl, thioureido, mercapto, aminomethylphosphonic, alkylthio groups or an O-cellulose I radical derived from formula I; provided that AX groups are present in a AX/n ratio from 0.0001 to 3. Also provided is a process for the preparation of said O-alkylated celluloses.

Method for producing polysaccharide derivative and lignin derivative

触媒、助触媒、活性化合物を使用せずに、セルロース等の多糖類を原料として、高い分子量を維持したままエステル化又はエーテル化等によって多糖類誘導体を製造する方法を提供することを目的とする。また、リグノセルロースを含むバイオマスから、直接的にセルロース誘導体を分離した状態で製造する方法を提供することを目的とする。本発明の多糖類誘導体の製造方法は、多糖類を含む原料と、アニオンの共役酸のＤＭＳＯ中におけるｐＫａが１２〜１９でありカルベンを生成可能なイオン液体と、鎖状もしくは環状エステル化合物又はエポキシ化合物とを含む混合物中で反応を行うことを特徴とする。多糖類を含む原料として、リグノセルロースを含むバイオマス原料が好ましく用いられる。 An object of the present invention is to provide a method for producing a polysaccharide derivative by using esterification or etherification while maintaining a high molecular weight from a polysaccharide such as cellulose as a raw material without using a catalyst, a cocatalyst, and an active compound. . Moreover, it aims at providing the method of manufacturing in the state which isolate | separated the cellulose derivative directly from the biomass containing lignocellulose. The method for producing a polysaccharide derivative according to the present invention includes a raw material containing a polysaccharide, an ionic liquid capable of producing a carbene having a pKa of 12 to 19 in DMSO of an anionic conjugate acid, a chain or cyclic ester compound, or an epoxy. The reaction is carried out in a mixture containing the compound. As a raw material containing a polysaccharide, a biomass raw material containing lignocellulose is preferably used.

Process of continuous mixing of alkalicellulose and etherifying agents

PROCEDURE FOR MANUFACTURING ETERES OF CELLULOSE WITH REDUCED YELLOW AND DECOLORATION.

Un procedimiento para preparar un éter de celulosa de bajo peso molecular, comprendiendo dicho procedimiento: (a) proporcionar un éter de celulosa de alto peso molecular de una viscosidad de aproximadamente 200 centipoises o más, en una solución acuosa al dos por ciento a 20oC; (b) poner en contacto el éter de celulosa de alto peso molecular con una cantidad de un ácido suficiente para despolimerizarlo parcialmente hasta un éter de celulosa de bajo peso molecular de una viscosidad de aproximadamente 100 cP o menor, a 20oC, en una solución acuosa al dos por ciento; (c) neutralizar parcial o sustancialmente el ácido por puesta en contacto del éter de celulosa de bajo peso molecular con un compuesto básico; (d) repetir las etapas (a)-(c) para producir dos o más tandas de producto discretas de éter de celulosa de bajo peso molecular, en las que al menos una tanda de producto discreta se neutraliza parcialmente a un pH de 6, 8 o menor; y (e) mezclar las dos o más tandas de producto discretas para formar una tanda de producto combinada de éter de celulosa de bajo peso molecular de un pH de 4 a 6, 8. A process for preparing a low molecular weight cellulose ether, said process comprising: (a) providing a high molecular weight cellulose ether of a viscosity of about 200 centipoise or more, in a two percent aqueous solution at 20 ° C; (b) contacting the high molecular weight cellulose ether with an amount of an acid sufficient to partially depolymerize it to a low molecular weight cellulose ether of a viscosity of about 100 cP or less, at 20 ° C, in an aqueous solution at two percent; (c) partially or substantially neutralize the acid by contacting the low molecular weight cellulose ether with a basic compound; (d) repeat steps (a) - (c) to produce two or more discrete batches of low molecular weight cellulose ether product, in which at least one batch of discrete product is partially neutralized at a pH of 6, 8 or less; and (e) mixing the two or more discrete batches of ...

Polymerizable mixed allyl carboxymethyl cellulose esters and salts thereof

Polysaccharide derivative and preparation method therefor

The objective of the present invention is to provide a novel polysaccharide derivative and a preparation method therefor, the derivative having a viscosity, at low concentration, superior to that of conventional cellulose ethers, which are an important ingredient of a thickener used in building materials, cosmetics and the like. The present invention provides a polysaccharide derivative having a structure of the following chemical formula.

Method for preparing cellulose ether having low degree of polymerization and cellulose ether prepared thereby

提供一种用于制备具有低聚合度并且经受较少黄化的纤维素醚的方法以及由其制备的纤维素醚。更具体地说，提供一种用于制备具有低聚合度的纤维素醚的方法，该方法包含：使浆料和碱金属氢氧化物溶液彼此接触或将它们混合以获得对应碱纤维素的步骤，使所述碱纤维素与氧反应以将所述碱纤维素的粘度减小百分比调整为10至95%的第一解聚步骤，使所述解聚的碱纤维素与醚化剂反应的步骤，洗涤和干燥所述反应产物以获得纤维素醚的步骤，和使所述纤维素醚与盐酸接触以将所述纤维素醚的粘度减小百分比调整为40至99.9%的第二解聚步骤。

Production of microcrystalline cellulose

Microcrystalline cellulose is produced by subjecting to a high shear treatment, at elevated temperature and pressure, a reaction mixture of a cellulose material, an active oxygen compound and water, for a time effective to depolymerize the cellulose material. The mixture may be further depolymerized after the high shear treatment by holding it without cooling. A suitable active oxygen compound is hydrogen peroxide. An extruder is a typical high shear device.

Manufacturing process for cellulose derivatives

Cellulose ethers and method of preparing the same

The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. When the cellulose pulp is southern softwood kraft, the mercerized cellulose pulp has a TAPPI 230 om-89 viscosity greater than 12 cP. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc.

Patent RU2019136162A3

ВУ“? 2019136162” АЗ Дата публикации: 23.11.2021 Форма № 18 ИЗПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2019136162/05(071348) 04.05.2018 РСТ/Е12018/050328 04.05.2018 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 20175394 05.05.2017 В Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ПРОИЗВОДНЫЕ ЦЕЛЛЮЛОЗЫ Заявитель: БЕТУЛИУМ ОЙ, Е 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты см. п см. Примечания [ ] приняты во внимание следующие пункты: р [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) СОЗВ 3/00 (2006.01) СОЗВ 5/00 (2006.01) СОЗВ 5/14 (2006.01) СОЗВ 15/00 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) СОЗВ 3/00-3/30, 5/00-5/14, 7/00, 15/00-15/06 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): РУ\У/Р1, Ебрасепес, Рабеагсь, КОРТО, ИЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к предмету ...

Dialysis membrane composed of modified cellulose with improved biocompatibility

Dialysis membrane for haemodialysis in the form of flat sheets, tubular sheets or hollow fibres composed of cellulose modified by substitution, in which the effects of complement activation and leucopenia are distinctly reduced, is characterised in that the average degree of substitution of the modified cellulose is 0.02 to 0.07. The dialysis membranes which have proved successful for the purpose of the invention contain modified cellulose which has a structure represented by the formula cellulose-R'-X-Y where X is -NR''- and/or <IMAGE> and/or -S- and/or -SO- and/or -SO2- and/or <IMAGE> and/or -CO-O- and/or -O- Y is -R and/or -NR2 and/or -Si(OR'')3 and/or -SO3H and/or -COOH and/or -PO3H2 and/or -@HR2 or the salts thereof R' is an alkylene group and/or cycloalkylene group and/or arylene group with a total of 1 to 25 C atoms R'' is a hydrogen atom or R and R is an alkyl group with 1 to 5 C atoms and/or a cycloalkyl group and/or aryl group.

Efficient process for preparing an ester of a cellulose ether

The method of producing an esterified cellulose ether is such that a wet cellulosic ether having a water content of at least 10 percent based on the weight of the wet cellulose ether is reacted with an aliphatic monocarboxylic acid anhydride, a dicarboxylic acid anhydride, Can be produced effectively. Further improvements in efficiency and in the reduction of process steps can be achieved in a process for producing esterified cellulose ethers, the process comprising the steps of: a) reacting cellulose with an alkaline substance to produce alkali cellulose B) reacting the produced alkali cellulose with at least one etherifying agent and washing the produced cellulose ether to obtain a wet cellulosic ether having a water content of at least 10 weight percent, and c) Reacting the ether with an aliphatic monocarboxylic acid anhydride and / or a dicarboxylic acid anhydride and with a depolymerization agent.

Bioresistant cellulose ethers

BIORESISTANT CELLULOSE ETHERS ABSTRACT OF THE DISCLOSURE . Cellulose ethers which are resistant to enzyme catalyzed hydrolysis can be prepared by using a mixture of sodium and lithium hydroxides as the catalysts in conjunction with etherification re-agents, such as, epoxides or alkyl halides. S P E C I F I C A T I O N

Cementitious composition

Methods for preparing alkali cellulose and cellulose ether

Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.

Method for producing cellulose derivatives

Pulp is treated with a hemicellulase, e.g. a xylanase such as that derived from Bacillus sp. SD902, prior to being chemically modified. This results in excellent cellulose derivatives that could not be obtained by any conventional methods. Specifically, the cellulose derivatives produced by this method have improved filterability and increased water-solubility. In addition, according to this method, the formation of microgel is minimized, and the distribution of the substituents in the cellulose derivatives through the intramolecular substitution in the method is made more uniform.

Cellulose ether composition for the extrusion of inorganic moldings

Die vorliegende Erfindung betrifft Additive, die eine Celluloseetherzusammensetzung zum Einsatz als Wasserretentions-, Plastifizierungs- und Gleitmittel bei der Extrusion anorganischer Massen enthalten. Ferner betrifft sie die Verwendung dieser Celluloseetherzusammensetzung in Baustoffen und anderen Mischungen mit einem Größtkorn von 2 mm sowie ein Verfahren zur Extrusion anorganischer Massen unter Einsatz dieser Additive. Der Einsatz dieser Methylcellulosezusammensetzung führt beim Extrusionsprozess zu verbesserten Prozesseigenschaften, zu einer höheren Oberflächenqualität des extrudierten Körpers sowie zu verbesserten Produkteigenschaften des extrudierten Körpers.

Molecular coordination complexes comprising cellulose polymers and alcohol and controlled release compositions containing them

Coated paper substrate suitable for metallization

The present invention is directed to a coated paper substrate that is particularly suitable for metallization and other nano-coatings that provide barrier properties and are applied using vacuum deposition techniques. The invention is also directed to a process for preparing the coated paper substrate. The invention is also directed to a packaging material comprising the coated paper substrate.

Method of producing carrier of pharmaceutical substances

Patent RU2019102489A3

ВИ“? 2019102489” АЗ Дата публикации: 01.09.2020 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2019102489/04(00442 1) 22.06.2017 РСТ/КК2017/006573 22.06.2017 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 19-2016-0088560 13.07.2016 КК Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) Способ получения простого эфира целлюлозы, полученный этим способом простой эфир целлюлозы и отделочные материалы для строительства, содержащие простой эфир целлюлозы Заявитель: ЛОТТЕ ФАЙН КЕМИКАЛ КО., ЛТД., КК 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) СОЗВ 1/08 (2006.01) СОЗВ 11/00 (2006.01) СОЗВ 11/02 (2006.01) С05В 11/08 (2006.01) СОФТ, 1/28 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) СОЗВ 1/08,С08В 11/00,СО08В 11/02,СО8В 11/08,СО8ВТ, 1/28 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): ...

Patent FR2331569B1

Process for producing cellulose derivatives

Disclosed is a method for producing cellulose derivatives wherein cellulose is impregnated with an alkali solution, the impregnated cellulose is selectably pressed out, and the cellulose undergoes a substitution or addition reaction, whereby the cellulose derivative is obtained with a degree of substitution DS. The applied cellulose is an ammonia activated cellulose. The molar ratio of the alkali to the AHG (anhydro glucose unit) in the cellulose at the beginning of the substitution or addition reaction does not exceed twice the valve of the desired DS. For the swelling of cellulose, no excess of alkali is required, which does not react to produce alkali cellulose but only adheres to the cellulose as a loose association product. Reagent consumption in the substitution or addition reaction is lower. Fewer secondary products are formed.

Methods for preparing alkali cellulose and cellulose ether

본 발명은 알칼리의 분포가 균일한 알칼리셀룰로오스를 효율적으로 제조하는 방법을 제공한다. 구체적으로는, 이동하는 여과면 상에서 펄프와 알칼리 금속 수산화물 용액을 접촉시키면서 진공 여과를 행하여, 여과면 상에 남은 접촉물을 취출하는 접촉 여과 공정과, 얻어진 접촉물을 탈액하는 탈액 공정을 포함하는 알칼리셀룰로오스의 제조 방법, 및 이 알칼리셀룰로오스를 이용하는 셀룰로오스에테르의 제조 방법을 제공한다. 또한, 수평 방향으로 이동하는 수평인 여과면과, 여과면 상에 펄프를 투입하기 위한 펄프의 투입구와, 투입된 펄프에 알칼리 금속 수산화물 용액을 산포하는 산포구와, 여과면의 진공 흡인을 가능하게 하는 진공 펌프와, 이동하는 여과면 상에서 펄프와 알칼리 금속 수산화물 용액을 접촉시키면서 진공 여과를 행하여, 여과면 상에 남은 접촉물을 취출하기 위한 취출구를 구비하는 연속식 수평 진공 여과기형 접촉 장치 등을 구비하는 알칼리셀룰로오스의 제조 장치를 제공한다. The present invention provides a method for efficiently producing alkaline cellulose having a uniform distribution of alkali. Specifically, there are a contact filtration step of vacuum filtration while contacting the pulp with an alkali metal hydroxide solution on the moving filtration surface to take out the remaining contact material on the filtration surface, and a desalting step of desorbing the obtained contact product A method for producing cellulose, and a method for producing cellulose ether using the alkali cellulose. In addition, it is also possible to provide an apparatus and a method for purifying a pulp, which comprises a horizontal filtration surface moving in the horizontal direction, an inlet for pulp to feed the pulp on the filtration surface, an acid trap for spraying the alkali metal hydroxide solution on the pulp fed, And a continuous horizontal vacuum filter type contact device having a vacuum pump and an outlet for vacuum filtration while contacting the pulp with the alkali metal hydroxide solution on the moving filtration surface to take out the remaining contact on the filtration surface An apparatus for producing an alkali cellulose is provided.

Cellulose ethers and method of preparing the same

Method for producing alkali cellulose and cellulose ether

PROCESS FOR THE PREPARATION OF CELLULOSE ETHERS.

Cellulose-ether composition for extruding inorganic shaped bodies

본 발명은 무기질 재료를 압출할 시에 보수제, 가소제 및 윤활제로서 이용하기 위한 셀룰로스 에테르 조성물을 함유하는 첨가제에 관한 것이다. 또한, 본 발명은 건축 자재에, 그리고 2mm의 최대 입자 크기를 갖는 기타 혼합물에 적용되는 상기 셀룰로스 에테르 조성물의 이용에 관한 것일 뿐 아니라, 상기 첨가제를 이용하면서 무기질 재료를 압출하기 위한 방법에 관한 것이다. 상기 메틸셀룰로스 조성물을 이용함으로써, 압출 공정에서 공정 특성이 개선되고, 압출 성형체의 표면 품질이 상승할 뿐 아니라, 압출 성형체의 제품 특성도 개선된다. 셀룰로스 에테르 조성물을 함유하는 상기 첨가제는, 용매(예: 카르복실레이트 에테르, 또는 카르복실산) 및 소포제(예: 알킬렌 글리콜)를 또한 포함한다. The present invention relates to additives containing cellulose ether compositions for use as repairing agents, plasticizers and lubricants in extruding inorganic materials. The present invention also relates to the use of the cellulose ether composition applied to building materials and to other mixtures having a maximum particle size of 2 mm, as well as to a method for extruding inorganic materials using the additive. By using the methyl cellulose composition, the process characteristics are improved in the extrusion process, not only the surface quality of the extruded body is increased, but also the product properties of the extruded body are improved. The additives containing the cellulose ether composition also include a solvent (eg carboxylate ether, or carboxylic acid) and an antifoaming agent (eg alkylene glycol). 셀룰로스 에테르 조성물, 압출 성형체, 무기질 재료 Cellulose ether compositions, extruded bodies, inorganic materials

Aminoalkyltrialkylsilylcellulose and a process for coating surfaces

Improvements in ester processing

Methods for preparing alkali cellulose and cellulose ether

Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.