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1. 发明公开

EP1619209A4 CELLULOSE ESTER HAVING IMPROVED STABILITY TO WET HEAT 有权转让
标题翻译：具有改进的湿热稳定性纤维素酯
公开(公告)号：EP1619209A4
公开(公告)日：2007-07-18
申请号：EP04714483
申请日：2004-02-25
申请人： DAICEL CHEM
发明人： OZAKI TORU , SHIBATA TORU , SHIMAMOTO SHU
IPC分类号： C08B3/06 , C08B3/16 , C08J5/18 , C08K3/22 , C08K3/30 , C08L1/10 , G02B5/30
CPC分类号： C08J5/18 , C08B3/06 , C08B3/16 , C08J2301/10 , C08L1/10 , Y10T428/31971
摘要： A cellulose ester which reconciles stability to wet heat with both of the ability to be released from a substrate in film formation by solution casting even when the amount of the residual solvent is small and spinnability. It is a cellulose ester in which the molar ratio determined from the total amount of sulfuric acid remaining in 1 g of the cellulose ester (A) [unit; mol] and the total amount of calcium contained in 1 g of the cellulose ester (B) [unit; mol] satisfies the following relationship. 0.5

2. 发明公开

EP0769500A4 CELLULOSE ACETATE HAVING EXCELLENT PHYSICAL STRENGTH AND PROCESS FOR PREPARING THE SAME 失效
标题翻译：根据上述制造出色的球技和方法纤维素
公开(公告)号：EP0769500A4
公开(公告)日：2001-08-16
申请号：EP96907721
申请日：1996-03-29
申请人： DAICEL CHEM
发明人： KIYOSE ATSUNOBU , SHIMAMOTO SHU , SHUTO YUICHIRO , TANIGUCHI HIROKI
IPC分类号： C08B3/06
CPC分类号： C08B3/06
摘要： Cellulose acetate which can provide moldings improved in the properties, particularly film strength and pliability. The cellulose acetate has an average degree of acetylation of not less than 59 %, a viscosity-average degree of polymerization (DP) of not less than 290, and a viscosity ( eta ), as measured in the form of a concentrated solution thereof by the falling-ball method, satisfying a requirement for the relationship with the viscosity-average degree of polymerization (DP) represented by the following formula (1): 2.814 x 1n(DP) - 11.753

3. 发明公开

EP0763544A4 CELLULOSE ACETATE HAVING HIGH MOLDABILITY AND PROCESS FOR PREPARING THE SAME 失效
标题翻译：细胞培养基麻醉师HOHER VERFORMBARKEIT UND VERFAHREN ZU DESSEN HERSTELLUNG
公开(公告)号：EP0763544A4
公开(公告)日：2001-02-28
申请号：EP96907722
申请日：1996-03-29
申请人： DAICEL CHEM
发明人： MURAKAMI KO , OKANO TOSHINORI , TANIGUCHI HIROKI , KIYOSE ATSUNOBU , SHIMAMOTO SHU
IPC分类号： C08B3/06 , C08B3/22 , C08L1/12
CPC分类号： C08L1/12 , C08B3/06 , C08B3/22 , C08L2666/02
摘要： A cellulose acetate which, despite the high average degree of polymerization, has a low solution viscosity and a high moldability.The low-molecular-weight fraction of cellulose acetate (such as CTA having an average degree of acetylation of 59.0 to 62.5 %) is eluted with a washing solvent to prepare cellulose acetate having a molecular weight distribution Mw/Mn of 1 to 1.7. The washing solvent may be any solvent capable of swellling or partially dissolving cellulose acetate, for example, a solvent capable of dissolving 0.1 to 30 % by weight of celllulose acetate. Examples of such solvents include ones having a solubility parameter δ of 7 to 12.5 (such as ketones, ethers, organic acids, and esters).
摘要翻译：获得具有高成型性的乙酸纤维素，尽管具有高的平均聚合度，但溶液粘度低。乙酸纤维素的低分子量成分（例如平均乙酰化度为59.0〜62.5％的CTA）用洗涤溶剂洗脱，得到分子量分布Mw / Mn为1〜1.7的乙酸纤维素。作为洗涤溶剂，可以使用溶解或部分溶解乙酸纤维素的溶剂，例如溶解0.1〜30重量％醋酸纤维素的纤维素。这种溶剂包括例如溶度参数δ为7至12.5（酮，醚，有机酸，酯等）的溶剂。

4. 发明公开

EP2472296A4 CELLULOSE DIACETATE FOR RETARDATION FILM 有权转让
标题翻译：纤维素DIAZ ETAT的时滞电影
公开(公告)号：EP2472296A4
公开(公告)日：2013-01-16
申请号：EP11736929
申请日：2011-01-21
申请人： DAICEL CHEM
发明人： SHIMAMOTO SHU , ASUMI YUYA
IPC分类号： G02B5/30 , C08B3/06 , C08J5/18 , C08L1/12 , G02F1/13363
CPC分类号： C08B3/06 , C08B15/02 , C08J5/18 , C08J2301/12 , C08L1/12 , G02B5/3083 , C08L2666/26

5. 发明公开

EP1792918A4 CELLULOSE ESTER AND PROCESS FOR PRODUCTION THEREOF 有权转让
标题翻译： CELLULOSEESTER UND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP1792918A4
公开(公告)日：2008-07-30
申请号：EP05785929
申请日：2005-09-21
申请人： DAICEL CHEM
发明人： SHIMAMOTO SHU , HIGUCHI AKIHIRO
IPC分类号： C08B3/06 , C08B3/00 , C08B3/02 , C08J5/18 , G02B5/30
CPC分类号： G02B1/14 , C08B3/00 , C08B3/06 , C08J5/18 , C08J2301/12 , G02B1/105 , G02B5/3033 , G02B5/3083
摘要： The invention provides a cellulose ester and a film which are useful in enhancing optical characteristics such as optical isotropy remarkably. A cellulose ester which has a total mean degree of substitution of 2.90 to 2.965, a sum total of mean degrees of substitution at the 2- and 3-positions of glucose units of 1.97 or above and a half width of compositional distribution of 0.09 or below in degree of substitution. This cellulose ester can be produced by a process for the production of cellulose ester which comprises the acylation step (i) of acylating cellulose with an acylating agent in the presence of a sulfuric acid catalyst and the aging step (ii) of aging the obtained product in the presence of a sulfuric acid catalyst, wherein the acylation in the acylation step (i) is conducted in the presence of 6.5 to 9.5 parts by weight of a sulfuric acid per 100 parts by weight of cellulose by the use of 1.40 to 2.0 molar equivalents of an acylating agent per mol of cellulosic hydroxyl.
摘要翻译：提供了用于显着改善光学性质如光学各向同性的纤维素酯及其膜。调节纤维素酯使得取代度为2.90〜2.965，2-和3-位置的取代度合计不小于1.97，化学组成的半高度宽度以取代度表示为不超过0.09。这样的纤维素酯可以通过纤维素酯的制造方法来制造，该方法包括：（ⅰ）在硫酸催化剂存在下用酰化剂酰化纤维素的酰化步骤，和（ⅱ）水解步骤酰化产物在硫酸催化剂存在下，其中酰化作用相对于纤维素中的1摩尔羟基，在6.5至9.5份的存在下，用1.40-2.0摩尔当量的酰化剂进行酰化硫酸催化剂相对于酰化步骤（i）中的100重量份纤维素的重量。

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