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    • 20. 发明授权
    • Highly branched polyamide graft copolymers
    • 高分支聚酰胺接枝共聚物
    • US06391982B1
    • 2002-05-21
    • US09605874
    • 2000-06-29
    • Harald HaegerRalf RichterGeorg Oenbrink
    • Harald HaegerRalf RichterGeorg Oenbrink
    • C08G7304
    • C08G69/26C08G69/02C08G69/48Y10S424/16
    • A graft copolymer is prepared by a process comprising: graft polymerizing a polyamide-forming monomer selected from the group consisting of lactams and &ohgr;-aminocarboxylic acids and an oligocarboxylic acid selected from the group consisting of from 0.015 to about 3 mol. % of dicarboxylic acid and from 0.01 to about 1.2 mol. % of tricarboxylic acid, in each case the stated amounts of oligocarboxylic acid based on a molar amount of lactam, &ohgr;-aminocarboxylic acid or combination thereof, onto from 0.5 to 25% by weight, based on the graft copolymer, of a polyamine having at least 11 nitrogen atoms and a number-average molecular weight Mn of at least 500 g/mol., wherein the amino group concentration in the graft copolymer ranges from 100 to 2500 mmol./kg.
    • 接枝共聚物通过以下方法制备,该方法包括:将选自内酰胺和ω-氨基羧酸的聚酰胺形成单体和选自0.015至约3mol的寡羧酸接枝聚合。 %的二羧酸和0.01至约1.2mol。 %的三羧酸,在每种情况下,所述量的基于内酰胺,ω-氨基羧酸或其组合的摩尔量的寡羧酸的量为基于接枝共聚物的0.5至25重量%的多胺,其具有 至少11个氮原子和数均分子量Mn为至少500g / mol,其中接枝共聚物中的氨基浓度范围为100-2500mmol / kg。