发明授权
US08436131B2 Solid state polymerization process for polyester with phosphinic acid compounds 失效
具有次膦酸化合物的聚酯的固态聚合方法

Solid state polymerization process for polyester with phosphinic acid compounds
摘要:
Disclosed are phosphinic acid compounds of formula I, II or III where R1 and R1′ are for instance straight or branched C1-C50alkyl, R2 is for instance straight or branched C22-C50alkyl, R3 and R3′ are for instance straight or branched C1-C50alkyl, R4 is for instance straight or branched C1-C50alkylene and m is from 2 t 100. Also disclosed are polyester compositions comprising the compounds of formula I, II and III.
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