发明授权
- 专利标题： Fire-retardant polyamides from naphthalene dicarboxylic reactant and halogenated carboxylic reactant
- 专利标题（中）： 萘二羧酸反应物和卤代羧酸反应物的阻燃聚酰胺
-
申请号： US495417申请日： 1974-08-07
-
公开(公告)号： US4042571A公开(公告)日： 1977-08-16
- 发明人: Shoji Kawase , Takeo Shima , Keiichi Moriyama
- 申请人： Shoji Kawase , Takeo Shima , Keiichi Moriyama
- 申请人地址： JA Osaka
- 专利权人： Teijin Limited
- 当前专利权人： Teijin Limited
- 当前专利权人地址： JA Osaka
- 优先权： JA48-89205 19730810; JA48-95115 19730827; JA49-81677 19740718
- 主分类号： C08G69/42
- IPC分类号： C08G69/42 ; C08G69/26
摘要：
A process for preparing a fired-retardant polyamide, which comprises polymerizing a carboxylic acid component consisting essentially of at least one naphthalene-dicarboxylic acid selected from the group consisting of naphthalene-2,7-dicarboxylic acid and naphthalene-2,6-dicarboxylic acid and/or its amide-forming derivative, and a halogen substituted-carboxylic acid and/or its amide-forming derivative, and an aliphatic diamine, the amount of said naphthalene dicarboxylic acid and/or its derivative being at least 40 mol% of the total acid component, and the amount of said halogen-substituted carboxylic acid being such that the halogen atom content of the polyamide is at least 0.13% by weight.