申请人:Pavlin S. Mark
公开号:US20060052576A1
公开(公告)日:2006-03-09
Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.25; and c) the reaction mixture contains either no co-diacid, or comprises a small amount of co-diacid, wherein, if the reaction mixture comprises a small amount of co-diacid, then acid equivalents from co-diacid contribute less than 25% of the total acid equivalents present in the reaction mixture.
具有连接的内部聚醚块和内部聚酰胺块的共聚物具有有利的物理性能和溶剂凝胶能力。该共聚物可以从包含1,4-环己烷二甲酸(CHDA)和聚(烷氧基)二胺(PAODA)的反应混合物中制备。可选地,反应混合物不含与胺或羧酸基反应的单官能化合物,但其中一些单官能化合物可能存在。二聚胺和/或二聚酸可以存在于反应混合物中。还可以从包含二聚酸和至少两种二胺化合物(包括PAODA和具有2-6个碳的短链脂肪族二胺(SDA))的反应混合物中制备共聚物,其中:a)反应混合物包含x克PAODA和y克SDA,且x/(x+y)为0.8-0.98;b)反应混合物重z克,且x/z至少为0.25;c)反应混合物不含共二酸,或包含少量共二酸,其中,如果反应混合物包含少量共二酸,则共二酸的酸当量贡献的总酸当量不超过反应混合物中总酸当量的25%。