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1. 发明申请

US20190218312A1 CELLULOSE ACETATE AND PRODUCING METHOD THEREFOR 审中-公开
公开(公告)号：US20190218312A1
公开(公告)日：2019-07-18
申请号：US16327054
申请日：2017-08-21
申请人： DAICEL CORPORATION
发明人： Maiko TSUDA , Akihiro HIGUCHI
IPC分类号： C08B3/06 , C08B1/02 , C08B17/02
CPC分类号： C08B3/06 , B02C7/16 , B02C13/04 , C08B1/02 , C08B17/02
摘要： The purpose of the present invention is to provide a cellulose acetate which can be used to obtain an optical film having a very small amount of bright spot foreign matters, with excellent production efficiency, even when cellulose containing a small amount of hemicellulose components and having a high degree of crystallinity is used as a raw material. A cellulose acetate in which a content ratio by mole of mannose units to a sum of xylose units, mannose units and glucose units, which are sugar chain components, is 0.04 mol % or less, and a filtration index K measured by the following measurement method is 30 mL−1 or less. (Measurement method) The cellulose acetate is dissolved in a mixed solvent containing methylene chloride and methanol at a weight ratio of methylene chloride/methanol of 9/1 to obtain a solution with a solid concentration of 16% by weight. The temperature of the solution is adjusted to 25° C., and the solution is subjected to constant-pressure filtration under a pressure of 3 kg/cm2 using a cloth obtained by stacking three sheets of calico (s 618) (diameter: 15 mm, filtration area: 1.77 cm2). At this time, the filtration index k (mL−1) is calculated from the following expression, where P1 represents the amount of filtration (mL) up to 20 minutes after the start of filtration, and P2 represents the amount of filtration (mL) from 0 to 60 minutes. Filtration   index   K = 2 - P 2 / P 1 P 1 + P 2 × 10 4 [ Mathematical   Formula   1 ]

2. 发明申请

US20180312609A1 MODIFIED CELLULOSE FINE FIBERS AND METHOD FOR PRODUCING THE SAME 审中-公开
公开(公告)号：US20180312609A1
公开(公告)日：2018-11-01
申请号：US15769836
申请日：2016-10-27
申请人： KRI, Inc.
发明人： Lianzhen LIN , Ayako MARUTA
IPC分类号： C08B3/06 , C08B3/08 , C08L1/10 , C08J5/24
CPC分类号： C08B3/06 , C08B3/08 , C08B3/10 , C08B3/20
摘要： Modified fine cellulose fibers are produced by impregnating a cellulose with a reactive fibrillation solution or mixture containing a catalyst including a base catalyst or an organic acid catalyst, a monobasic carboxylic anhydride, and an aprotic solvent having a donor number of not less than 26 to esterify and chemically fibrillate the cellulose. This method provides a simple efficient process for producing modified fine cellulose fibers that have a diameter from several nano-meters to submicrometers, a large aspect ratio, a high degree of crystallinity, less damage in the shape or crystalline structure of the fine fibers, a large aspect ratio, and an excellent dispersibility in an organic solvent; The catalyst may contain a pyridine compound. The monobasic carboxylic anhydride may be a C2-4aliphatic monocarboxylic anhydride. The resulting modified fine cellulose fibers modified with a monobasic carboxylic anhydride may have a degree of crystallinity of not less than 70%, an average fiber diameter of 20 to 800 nm, and an average fiber length of 1 to 200 μm.

3. 发明申请

US20180127515A1 Molar mass controlled cellulose 审中-公开
公开(公告)号：US20180127515A1
公开(公告)日：2018-05-10
申请号：US15577787
申请日：2016-05-30
申请人： Teknologian tutkimuskeskus VTT Oy
发明人： Jarmo Ropponen , Riku Talja , Pia Willberg-Keyriläinen , Ali Harlin , Sari Asikainen , Jari Vartiainen
IPC分类号： C08B1/02 , C08B3/06 , C08B11/02 , C08B3/08 , C08B3/10 , C08B1/06 , C08J5/18 , C08J7/04
CPC分类号： C08B1/02 , C08B1/06 , C08B3/06 , C08B3/08 , C08B3/10 , C08B11/02 , C08J5/18 , C08J7/042 , C08J2301/04 , C08J2301/10 , C08J2301/12 , C08J2401/02 , C08L1/10 , C08L1/28
摘要： According to an example aspect of the present invention, there is provided a method of improving the reactivity and processability of cellulose in order to utilize cheap and easily available raw material and obtain excellent performance for biomaterial manufacturing.

4. 发明授权

US09926384B2 Regioselectively substituted cellulose esters produced in a tetraalkylammonium alkylphosphate ionic liquid process and products produced therefrom 有权
公开(公告)号：US09926384B2
公开(公告)日：2018-03-27
申请号：US14447704
申请日：2014-07-31
申请人： Eastman Chemical Company
发明人： Charles Buchanan , Norma Buchanan , Elizabeth Guzman-Morales
IPC分类号： C08B1/00 , C08B3/00 , G02B1/10 , G02B5/32 , C08B3/06 , C08B3/16 , G02B1/14 , C08B3/04 , C08B3/08 , C08B3/10
CPC分类号： C08B3/16 , C08B1/003 , C08B3/00 , C08B3/04 , C08B3/06 , C08B3/08 , C08B3/10 , G02B1/105 , G02B1/14 , G02B5/32 , Y10T428/13
摘要： This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays.

5. 发明申请

US20180037670A1 CELLULOSE ACETATE POWDER AND METHOD OF PRODUCING CELLULOSE ACETATE POWDER 审中-公开
公开(公告)号：US20180037670A1
公开(公告)日：2018-02-08
申请号：US15553669
申请日：2015-02-26
申请人： DAICEL CORPORATION
发明人： Akihiro HIGUCHI , Takehiro MATSUMOTO
IPC分类号： C08B3/06 , C08L1/12
CPC分类号： C08B3/06 , C08L1/12 , C08L2205/18
摘要： Provided is a cellulose acetate powder that makes it possible to reduce the formation of spotty patches on a formed article of the cellulose acetate and prevent lowering of the production process passability of the formed article. A cellulose acetate powder includes cellulose acetate having an acetylation degree of 53 to 56% and a 6% viscosity of 30 to 200 mPa·s. In the cellulose acetate powder, a cumulative pore volume is not less than 0.200 ml/g; a proportion of particles having a particle diameter of not less than 500 μm is not higher than 40%; and an angle of repose is not greater than 51°.

6. 发明授权

US09624311B2 Regioselectively substituted cellulose esters and efficient methods of preparing them 有权
公开(公告)号：US09624311B2
公开(公告)日：2017-04-18
申请号：US14513855
申请日：2014-10-14
申请人： Kevin Edgar , Daiqiang Xu , Xueyan Zheng
发明人： Kevin Edgar , Daiqiang Xu , Xueyan Zheng
IPC分类号： C08B3/24 , C08B3/00 , C08B3/06 , C08J5/18 , C08L1/10 , C08B3/08 , C08B3/16
CPC分类号： C08B3/24 , C08B3/00 , C08B3/06 , C08B3/08 , C08B3/16 , C08J5/18 , C08J2301/10 , C08L1/10
摘要： Embodiments of the invention provide regioselectively substituted carbohydrate and polysaccharide derivatives, such as cellulose esters, and methods for preparing them. Particular methods of the invention include deacylation of esters using tetrabutylammonium fluoride to obtain selective substitution at desired hydroxyl position(s) of the ester. Preferred is deacylation of an ester, which shows selectivity for removal of acyl groups from the ester of the secondary alcohols at C-2 and C-3, and which affords cellulose-6-O-esters with high regioselectivity by a simple one-step process employing no protective groups. Inventive regioselectively substituted cellulose esters can be prepared by such methods to obtain esters with the following anhydroglucose repeating units: wherein R1, R2, and R3 are each independently chosen from a hydrogen atom, and, whether substituted or unsubstituted, branched or unbranched, an alkanoyl group, an aroyl group, and a heteroaroyl group. In embodiments, the alkanoyl, aroyl and heteroaroyl groups can comprise from 1-20 carbon atoms.

7. 发明授权

US09507202B2 Polarization plate and liquid crystal display 有权
标题翻译：极化板和液晶显示屏
公开(公告)号：US09507202B2
公开(公告)日：2016-11-29
申请号：US14532561
申请日：2014-11-04
申请人： FUJIFILM Corporation
发明人： Ryuji Saneto , Humitake Mitobe , Jun Noguchi
IPC分类号： G02F1/1335 , G02B1/10 , G02B5/30 , C08B3/06 , B32B23/08
CPC分类号： G02F1/133528 , B32B23/08 , B32B2457/202 , C08B3/06 , G02B1/10 , G02B1/105 , G02B1/14 , G02B1/16 , G02B1/18 , G02B5/3033 , Y10T428/1041 , Y10T428/105
摘要： A polarization plate includes a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a (meth)acryl-based resin, a thickness of the first protective film is in a range of 20 μm to 30 μm, a thickness of the second protective film is in a range of 1.5 times to 1.8 times of the thickness of the first protective film, and a humidity dimensional change ratio of the second protective film in the direction orthogonal to an absorption axis of the polarizer is in a range of 0.45% to 0.8%.
摘要翻译：偏振板依次包括第一保护膜，偏振片和第二保护膜，其中第一保护膜是包含（甲基）丙烯酸类树脂的膜，第一保护膜的厚度为范围为20μm至30μm，第二保护膜的厚度在第一保护膜的厚度的1.5倍至1.8倍的范围内，并且第二保护膜在垂直于第二保护膜的方向上的湿度尺寸变化率偏振器的吸收轴在0.45％至0.8％的范围内。

8. 发明申请

US20160200835A1 METHOD FOR PRODUCING POROUS CELLULOSE PARTICLES, AND POROUS CELLULOSE PARTICLES 审中-公开
标题翻译：生产多孔纤维素颗粒的方法和多孔纤维素颗粒
公开(公告)号：US20160200835A1
公开(公告)日：2016-07-14
申请号：US14913374
申请日：2014-08-13
申请人： JNC CORPORATION
发明人： Toru KURABAYASHI , Shigeyuki AOYAMA , Akihiro UCHIDA
IPC分类号： C08B3/06 , B01J20/30 , B01J20/24
CPC分类号： C08B3/06 , B01J20/24 , B01J20/285 , B01J20/3085 , B01J39/05 , B01J39/22 , B01J39/26 , C08J3/14 , C08J2301/12 , C08L1/12
摘要： One embodiment shows a method for producing porous cellulose particles, including: (a) dissolving cellulose diacetate into a solvent to prepare a cellulose diacetate solution; (b) dispersing the cellulose diacetate solution into a medium immiscible with the cellulose diacetate solution to obtain a dispersed system; (c) cooling the dispersed system; (d) adding a poor solvent to the cooled dispersed system to precipitate cellulose diacetate particles; and (e) saponifying the cellulose diacetate particles.
摘要翻译：一个实施方案示出了多孔纤维素颗粒的制造方法，其包括：（a）将二乙酸纤维素溶解在溶剂中以制备二乙酸纤维素溶液; （b）将纤维素二乙酸酯溶液分散到与二乙酸纤维素溶液不混溶的介质中以获得分散体系; （c）冷却分散体系; （d）向冷却的分散体系中加入不良溶剂以沉淀纤维素二乙酸酯颗粒; 和（e）皂化纤维素二乙酸酯颗粒。

9. 发明授权

US09243072B2 Cellulose interpolymers and method of oxidation 有权
公开(公告)号：US09243072B2
公开(公告)日：2016-01-26
申请号：US13728258
申请日：2012-12-27
申请人： Eastman Chemical Company
发明人： Charles Michael Buchanan , Norma Lindsey Buchanan , Susan Northrop Carty , Chung-Ming Kuo , Juanelle Little Lambert , Michael Orlando Malcolm , Jessica Dee Posey-Dowty , Thelma Lee Watterson , Matthew Davie Wood , Margaretha Soderqvist Lindblad
IPC分类号： C08B3/16 , C08B3/04 , C08B3/22 , C08B3/24 , C08L1/14 , C08B3/06 , A61K9/20 , A61K9/48 , A61K47/38 , C08L1/10 , C08L1/12 , C09D17/00 , C08B15/02 , C08B15/04 , C08B3/08 , A61K9/19 , A61K9/28
CPC分类号： C08B3/06 , A61K9/19 , A61K9/2054 , A61K9/2866 , A61K9/4891 , A61K47/38 , C08B3/04 , C08B3/08 , C08B3/16 , C08B3/22 , C08B3/24 , C08B15/02 , C08B15/04 , C08L1/10 , C08L1/12 , C08L1/14 , C09D17/00
摘要： This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents.

10. 发明授权

US09167830B2 Substituted cellulose acetates and uses thereof 有权
标题翻译：取代的乙酸纤维素及其用途
公开(公告)号：US09167830B2
公开(公告)日：2015-10-27
申请号：US13359568
申请日：2012-01-27
申请人： Michael T. Combs , Thomas S. Garrett
发明人： Michael T. Combs , Thomas S. Garrett
IPC分类号： A61K9/14 , A23G3/36 , C08B5/00 , A23L1/39 , A23L1/0534 , A23L1/06 , C09K8/035 , C09D101/12 , C08B3/06 , C08B3/22 , C08B5/14 , C08B7/00 , C09D101/16 , C09D101/20 , C09J101/12 , C08L1/12 , C08L1/16 , C08L1/20 , C09J101/16 , C09J101/20 , C09K17/40 , A23G3/42 , A61K8/73 , A61Q19/00
CPC分类号： A23G3/36 , A23G3/42 , A23L21/10 , A23L23/00 , A23L29/262 , A61K8/731 , A61K2800/10 , A61Q19/00 , C08B3/06 , C08B3/22 , C08B5/00 , C08B5/14 , C08B7/00 , C08L1/12 , C08L1/16 , C08L1/20 , C09D101/12 , C09D101/16 , C09D101/20 , C09J101/12 , C09J101/16 , C09J101/20 , C09K8/035 , C09K17/40
摘要： The present invention relates to substituted cellulose acetates and methods of use thereof. One embodiment of the present invention provides a drilling fluid having a base fluid and a viscosifier having a substituted cellulose acetate having a polar substituent that comprises an oxygen atom covalently bonded to a nonmetal selected from the group of sulfur, phosphorus, boron, and chlorine; where the nonmetal is present in at least about 0.01% by weight of the substituted cellulose acetate.
摘要翻译：本发明涉及取代的乙酸纤维素及其使用方法。本发明的一个实施方案提供了一种具有基础流体和增粘剂的钻井液，其具有包含与选自硫，磷，硼和氯的非金属共价结合的氧原子的极性取代基的取代的乙酸纤维素; 其中非金属以至少约0.01重量％的取代的乙酸纤维素存在。

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