发明公开
EP0769500A1 CELLULOSE ACETATE HAVING EXCELLENT PHYSICAL STRENGTH AND PROCESS FOR PREPARING THE SAME
失效
纤维素食品麻醉大肠杆菌FERTIGKEIT UND VERFAHREN ZUR HERSTELLUNG
- 专利标题： CELLULOSE ACETATE HAVING EXCELLENT PHYSICAL STRENGTH AND PROCESS FOR PREPARING THE SAME
- 专利标题（中）： 纤维素食品麻醉大肠杆菌FERTIGKEIT UND VERFAHREN ZUR HERSTELLUNG
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申请号： EP96907721.3申请日： 1996-03-29
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公开(公告)号： EP0769500A1公开(公告)日： 1997-04-23
- 发明人: KIYOSE, Atsunobu , SHIMAMOTO, Shu , SHUTO, Yuichiro , TANIGUCHI, Hiroki
- 申请人： DAICEL CHEMICAL INDUSTRIES, LTD.
- 申请人地址： 1, Teppo-cho Sakai-shi, Osaka 590 JP
- 专利权人： DAICEL CHEMICAL INDUSTRIES, LTD.
- 当前专利权人： DAICEL CHEMICAL INDUSTRIES, LTD.
- 当前专利权人地址： 1, Teppo-cho Sakai-shi, Osaka 590 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP100710/95 19950331; JP85551/95 19950411; JP292668/95 19951110
- 国际公布： WO9630412 19961003
- 主分类号： C08B3/06
- IPC分类号： C08B3/06
摘要：
An object of the invention is to obtain cellulose acetate with improved physical properties, particularly film strength and improved flexibility of the molded product.
Cellulose acetate wherein average degree of acetylation is not less than 59 %, viscosity average degree of polymerization (DP) is not less than 290, and concentrated solution viscosity (η) according to falling ball viscosity method for viscosity average degree of polymerization (DP) is expressed by the following formula (1): 2.814 × ln(DP) - 11.753 ≦ ln(η) ≦ 7.28 × ln(DP) - 37.059 and a process for production thereof.
Cellulose acetate wherein average degree of acetylation is not less than 59 %, viscosity average degree of polymerization (DP) is not less than 290, and concentrated solution viscosity (η) according to falling ball viscosity method for viscosity average degree of polymerization (DP) is expressed by the following formula (1): 2.814 × ln(DP) - 11.753 ≦ ln(η) ≦ 7.28 × ln(DP) - 37.059 and a process for production thereof.
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