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    • 11. 发明申请
    • PROCESS FOR PREPARING A HIGH MOLECULAR POLYCONDENSATE
    • 制备高分子量聚碳酸酯的方法
    • WO2005068532A1
    • 2005-07-28
    • PCT/EP2004/014886
    • 2004-12-29
    • DSM IP ASSETS B.V.LOONTJENS, Jacobus, AntoniusSCHOLTENS, Boudewijn, Jan, Robert
    • LOONTJENS, Jacobus, AntoniusSCHOLTENS, Boudewijn, Jan, Robert
    • C08G63/91
    • C08G69/04C08G63/91C08G64/42C08G69/28C08G69/44C08G69/48
    • The invention relates to a process for preparing a high-molecular polycondensate, i.e. a polyester, a polyamide, a polyester-amide, a polycarbonate, a polyether or a block copolymer by melt-mixing a polyester, a polyamide, a polycarbonate, a polyether or a mixture of at least two of these said polycondensates with a carbonyl bislactam according to formula (I) in which formula n is an integer of between 3 and 15, and a diepoxide. Preferably said diepoxide is a compound containing epoxy radicals of formula (II), which radicals are linked direct to carbon, oxygen, nitrogen or sulfur atoms, wherein R 1 and R 3 are both hydrogen, R 2 is hydrogen or methyl, and m=0, or wherein R 1 and R 3 , taken together, are - CH 2 -CH 2 - or -CH 2 -CH 2 -CH 2 -, in which case R 2 is hydrogen and m=0 or 1. The present invention results in a more stable process for the production of a polycondensate with a high molecular mass. Furthermore the polycondensate obtained with the process according to the invention has, even under extreme process conditions such as high temperature, less discoloration. With the process according to the invention a permanent increase in the molecular weight of a polycondensate is obtained in an even faster way than with processes according to the state of the art.
    • 本发明涉及通过熔融混合聚酯,聚酰胺,聚碳酸酯,聚醚等制备高分子缩聚物,即聚酯,聚酰胺,聚酯 - 酰胺,聚碳酸酯,聚醚或嵌段共聚物的方法 或这些所述缩聚物中的至少两种与根据式(I)的羰基双内酰胺的混合物,其中式n为3至15的整数,和二环氧化物。 优选地,所述二环氧化物是含有式(II)的环氧基的化合物,其基团直接连接到碳,氧,氮或硫原子上,其中R 1和R 3都是氢,R 2是氢或甲基,m = 0,或 其中R 1和R 3一起是-CH 2 -CH 2 - 或-CH 2 -CH 2 -CH 2 - ,在这种情况下,R 2是氢并且m = 0或1.本发明导致更稳定的 具有高分子量的缩聚物。 此外,通过本发明的方法获得的缩聚物即使在极端的工艺条件下,例如高温,较少变色。 通过根据本发明的方法,以比根据现有技术的方法更快的方式获得缩聚物的分子量的永久增加。