发明公开
EP0572002A3 Para-aramide dope of low degree of polymerization, para-aramide fiber and para-aramide pulp produced therefrom and processes for producing the same
失效
低聚合度的对位芳族聚酰胺掺杂物，由其制造的对位芳族聚酰胺纤维和对位芳族聚酰胺纸浆及其制造方法
- 专利标题： Para-aramide dope of low degree of polymerization, para-aramide fiber and para-aramide pulp produced therefrom and processes for producing the same
- 专利标题（中）： 低聚合度的对位芳族聚酰胺掺杂物，由其制造的对位芳族聚酰胺纤维和对位芳族聚酰胺纸浆及其制造方法
-
申请号： EP93108581.5申请日： 1993-05-27
-
公开(公告)号： EP0572002A3公开(公告)日： 1994-02-16
- 发明人: Takahashi, Tsutomu , Sato, Hiroyuki
- 申请人： SUMITOMO CHEMICAL COMPANY, LIMITED , Akzo Nobel N.V.
- 申请人地址： Kitahama 4-chome 5-33 Chuo-ku Osaka 541 JP
- 专利权人： SUMITOMO CHEMICAL COMPANY, LIMITED,Akzo Nobel N.V.
- 当前专利权人： SUMITOMO CHEMICAL COMPANY, LIMITED,Akzo Nobel N.V.
- 当前专利权人地址： Kitahama 4-chome 5-33 Chuo-ku Osaka 541 JP
- 代理机构： VOSSIUS & PARTNER
- 优先权： JP136733/92 19920528
- 主分类号： D01F6/60
- IPC分类号： D01F6/60 ; D01F1/02 ; D01F1/10 ; C08L77/10
摘要：
A para-aramide dope of low degree of polymerisation exhibiting an optical anisotropy containing 4-10% by weight of a para-aramide having an intrinsic viscosity of 1.0-2.5 dl/g and 2-10% by weight of an alkali metal chloride or an alkaline earth metal chloride in a polar amide solvent;
a process for producing a para-aramide fiber which comprises adding 0.94-0.99 mole of a para-oriented aromatic dicarboxylic acid halide per 1.00 mole of a para-oriented aromatic diamine in a polar amide solvent in which 2-10% by weight of an alkali metal chloride or an alkaline earth metal chloride is dissloved, carrying out a polymerization at a temperature of -20°C to 50°C to form a para-aramide dope of low degree of polymerization exhibiting an optical anisotropy and having a para-aramide concentration of 4-10% by weight, and spinning the dope; and
a process for producing a para-aramide pulp which comprises cutting the above-mentioned para-aramide fiber into a short fiber, mechanically fibrillating the short fiber with a high shearing force, and thereafter drying the fibrillated short fiber.
a process for producing a para-aramide fiber which comprises adding 0.94-0.99 mole of a para-oriented aromatic dicarboxylic acid halide per 1.00 mole of a para-oriented aromatic diamine in a polar amide solvent in which 2-10% by weight of an alkali metal chloride or an alkaline earth metal chloride is dissloved, carrying out a polymerization at a temperature of -20°C to 50°C to form a para-aramide dope of low degree of polymerization exhibiting an optical anisotropy and having a para-aramide concentration of 4-10% by weight, and spinning the dope; and
a process for producing a para-aramide pulp which comprises cutting the above-mentioned para-aramide fiber into a short fiber, mechanically fibrillating the short fiber with a high shearing force, and thereafter drying the fibrillated short fiber.
公开/授权文献
信息查询
