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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

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.

3. 发明申请

US20160200836A1 METHOD FOR PRODUCING CELLULOSE DERIVATIVE, AND CELLULOSE DERIVATIVE 审中-公开
标题翻译：生产纤维素衍生物和纤维素衍生物的方法
公开(公告)号：US20160200836A1
公开(公告)日：2016-07-14
申请号：US14910130
申请日：2014-08-11
申请人： NEC CORPORATION
发明人： Shukichi TANAKA , Kiyohiko TOYAMA , Masatoshi IJI
IPC分类号： C08B3/16 , C08B1/02
CPC分类号： C08B3/16 , C08B1/02 , C08L1/14
摘要： A method for producing a cellulose derivative, including reacting a mixed acid anhydride having two particular types of acyl groups with cellulose in the presence of a base catalyst in an organic solvent having an electron pair-donating property to form a cellulose derivative with the two types of acyl groups derived from the mixed acid anhydride, the acyl groups being introduced at hydroxy groups in the cellulose.
摘要翻译：一种纤维素衍生物的制造方法，其特征在于，在碱催化剂存在下，使具有两种特定类型酰基的混合酸酐与具有电子配对性的有机溶剂反应形成纤维素衍生物的衍生自混合酸酐的酰基，酰基被引入纤维素中的羟基。

4. 发明授权

US4385172A Prevention of hornification of dissolving pulp 失效
标题翻译：防止溶解纸浆的角质化
公开(公告)号：US4385172A
公开(公告)日：1983-05-24
申请号：US132912
申请日：1980-03-24
申请人： V. M. Yasnovsky , Donald M. MacDonald
发明人： V. M. Yasnovsky , Donald M. MacDonald
IPC分类号： C08B1/02 , C08B3/06 , C08B3/00
CPC分类号： C08B3/06 , C08B1/02
摘要： Heat treatment of never-dried dissolving pulps prior to drying prevents or retards the hornification and consequent decrease in esterification reactivity which normally occurs on drying of untreated pulps.
摘要翻译：在干燥之前对未干燥的溶解纸浆进行热处理防止或延迟通常在未处理的纸浆干燥时发生的酯化反应性的恶化和延迟。

5. 发明授权

US3785775A Plant for continuous production of cellulose triacetate in a heterogeneous phase 失效
标题翻译：在异质相中连续生产三乙酸纤维素的工厂
公开(公告)号：US3785775A
公开(公告)日：1974-01-15
申请号：US3785775D
申请日：1971-07-19
申请人： MIKHALSKY F , LEVI M , LEVI Y , RYABTSEV A , RUDENKO P , KULESH P , PURLOV J , GASPARIANTS A
发明人： MIKHALSKY F , GASPARIANTS A , PURLOV J , KULESH P , RUDENKO P , RYABTSEV A , LEVI Y , LEVI M
IPC分类号： C08B1/02 , C08B3/06 , C08B3/22 , C08B17/02 , B01J3/02 , B01J4/00
CPC分类号： C08B3/22 , C08B1/02 , C08B3/06 , C08B17/02
摘要： A plant for continuous production of cellulose triacetate in a heterogeneous phase, comprising consecutively arranged apparatus for activating, acetylation and benzene washings, benzene stripping, partial saponification, water washings and final product drying. The apparatus for activating, the apparatus for acetylation and benzene washings, the apparatus for benzene stripping and the partial saponification apparatus are interconnected by connecting adaptors for conveying the fibrous reaction mass from one apparatus to another and provided with means for creating therein a sealing plug from the conveyed reaction mass. Said means for the creation of the sealing plug is in the form of a screw conveyer with a valve arranged at its discharge orifice and spring-loaded in the direction opposite to the direction of the fibrous reaction mass conveying.
摘要翻译：一种用于连续生产不均一相的三醋酸纤维素的设备，包括用于活化，乙酰化和苯洗涤的连续排列的装置，苯汽提，部分皂化，水洗和最后的产品干燥。用于激活的装置，用于乙酰化和苯洗涤的装置，用于苯汽提的装置和部分皂化装置通过用于将纤维反应物料从一个装置输送到另一装置的连接适配器相互连接并且设置有用于在其中形成密封塞的装置传达的反应物质。用于产生密封塞的所述装置是螺旋输送机的形式，其中阀设置在其排放孔处，并且沿与纤维反应物质输送方向相反的方向弹簧加载。

6. 发明授权

US3671516A Reverse-osmosis membranes 失效
标题翻译：反向 - OSMOSIS膜
公开(公告)号：US3671516A
公开(公告)日：1972-06-20
申请号：US3671516D
申请日：1971-03-02
申请人： US INTERIOR
发明人： HILLMAN JUANITA J , HOROWITZ RAYMOND H
IPC分类号： C08B1/02 , C08B3/06 , C08B3/00
CPC分类号： C08B3/06 , B01D67/0093 , B01D71/10 , C08B1/02
摘要： Reverse-osmosis membranes are prepared by surface acetylation of cellulose film. A pre-treatment consisting of exposure of the film to high relative humidity, prior to acetylation, is employed to provide superior salt rejection.
摘要翻译：反渗透膜通过纤维素膜的表面乙酰化制备。采用在乙酰化之前将膜暴露于高相对湿度的预处理，以提供优异的拒盐性。

7. 发明授权

US2671778A Organic acid esters of cellulose 失效
标题翻译：纤维素有机酸酯
公开(公告)号：US2671778A
公开(公告)日：1954-03-09
申请号：US22407351
申请日：1951-05-01
申请人： CELANESE CORP
发明人： MARK PLUNGUIAN
IPC分类号： C08B1/02
CPC分类号： C08B1/02

8. 发明授权

US2671777A Preparation of organic carboxylic acid esters of cellulose 失效
标题翻译：纤维素的有机羧酸酯的制备
公开(公告)号：US2671777A
公开(公告)日：1954-03-09
申请号：US20169450
申请日：1950-12-19
申请人： CELANESE CORP
发明人： MARK PLUNGUIAN
IPC分类号： C08B1/02
CPC分类号： C08B1/02

9. 发明授权

US2663907A Converting fibrous cellulose into an easily powderable form 失效
标题翻译：将纤维状纤维素转化为易粉化形式
公开(公告)号：US2663907A
公开(公告)日：1953-12-29
申请号：US13870250
申请日：1950-01-14
申请人： BRITISH CELANESE
发明人： JOHN DOWNING , NAPIER DREWITT JAMES GORDON
IPC分类号： C08B1/00 , C08B1/02 , C08B1/06
CPC分类号： C08B1/02 , C08B1/00 , C08B1/06

10. 发明授权

US2546749A Treatment of pulp 失效
标题翻译：纸浆处理
公开(公告)号：US2546749A
公开(公告)日：1951-03-27
申请号：US66652346
申请日：1946-05-01
申请人： RAYONIER INC
发明人： HOLLOWAY JUDSON H , TABKE ROBERT S , PARRETT ARTHUR N
IPC分类号： C08B1/02
CPC分类号： C08B1/02

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