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    • 12. 发明公开
    • PROCESS FOR MAKING DAPBI-CONTAINING ARAMID CRUMBS
    • 制备含有包含达帕比的ARAMID碎片的方法
    • EP1689805A1
    • 2006-08-16
    • EP04797801.0
    • 2004-11-11
    • Teijin Twaron B.V.
    • BOS, Johannes
    • C08G69/32C08G69/46C08G69/04C08G73/18
    • C08G69/26C08G69/32C08G69/48C08G73/18
    • The invention pertains to a method for obtaining a composition comprising an aromatic polyamide containing para-phenylene terephthalamide and 2-(p-phenylene)-benzimidazole terephthalamide units by copolymerizing: i) a mole % of para-phenylenediamine; ii) b mole % of 5(6)-amino-2-(p-aminophenyl)benzimidazole; and iii) 90-110 mole % of terephthaloyl dichloride in a mixture of N-methyl pyrrolidone and containing c wt.% of calcium chloride, wherein c is within the range from 1 to 20, and wherein the ratio a: b ranges from 1:20 to 20:1, a+b is 100 mole %, and i), ii), and iii) together comprise 1-20 wt.% of the mixture, characterized in that the product b.c. is less than 215 and that the composition is a crumb with a relative viscosity ηrel of at least 4, wherein the crumb is defined as non-sticky particles at least 95% of which having an average diameter of 0.7-15 mm.
    • 本发明涉及一种获得包含含对苯二甲酰对苯二胺和2-(对亚苯基) - 苯并咪唑对苯二酰胺单元的芳族聚酰胺的组合物的方法,该方法通过共聚合:i)对苯二胺摩尔% ii)b摩尔%的5(6) - 氨基-2-(对氨基苯基)苯并咪唑; 和iii)90-110摩尔%的对苯二酰氯在N-甲基吡咯烷酮的混合物中并且含有c重量%的氯化钙,其中c在1至20的范围内,并且其中比例a:b的范围为1 :20至20:1,a + b为100摩尔%,且i),ii)和iii)一起构成混合物的1-20重量%,其特征在于产物bc 小于215,并且该组合物是具有至少4的相对粘度ηrel的碎屑,其中该碎屑被定义为其中至少95%的平均直径为0.7-15mm的非粘性颗粒。