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    • 1. 发明授权
    • Polyurea compounds which improve the light stability of polymers
    • 提高聚合物光稳定性的聚脲化合物
    • US4086207A
    • 1978-04-25
    • US699161
    • 1976-06-23
    • Paolo CassandriniAntonio Tozzi
    • Paolo CassandriniAntonio Tozzi
    • C07D211/58C08G18/32C08G71/02C08K5/21C08K5/3435C08L101/00C08K5/34C07D211/98
    • C08K5/3435C07D211/58C08G18/3225C08G18/3246C08G71/02C08K5/21C08L101/00
    • Novel polyurea compounds having the general formula ##STR1## where R.sub.1 is hydrogen, alkyl, cycloalkyl, aryl, substituted aryl, aralkyl, or a piperidine radical of the formula ##STR2## where R.sub.5, R.sub.6, R.sub.8 and R.sub.9 are alkyl and R.sub.7 is hydrogen, oxygen, alkyl, alkenyl, alkinyl or aralkyl, R.sub.2 is alkylene, cycloalkylene, arylene or aralkylene, R.sub.3 is a piperidine radical as set forth above, R.sub.4 is alkylene, cycloalkylene, arylene or aralkylene, X is zero or one, y is an integer from 2 to 200 and A and B each represent a terminal group. In some of the y units and in B the ##STR3## can be replaced in part by ##STR4## where R.sub.10 R.sub.11 and R.sub.12 are hydrogen, alkyl, cycloalkyl, aryl, aralkyl or R.sub.10 and R.sub.11, are linked together so that ##STR5## forms a 6 to 8 member heterocyclic ringAre produced by reacting a diamine with carbonyl chloride or a diisocyanate. The compounds are valuable light stabilizers for synthetic polymers, particularly polypropylene and polyethelene.
    • 具有通式的新型聚脲化合物,其中R 1是氢,烷基,环烷基,芳基,取代的芳基,芳烷基或下式的哌啶基,其中R 5,R 6,R 8和R 9是烷基,R 7是氢 ,氧,烷基,烯基,炔基或芳烷基,R2是亚烷基,亚环烷基,亚芳基或亚芳基,R3是如上所述的哌啶基,R 4是亚烷基,亚环烷基,亚芳基或亚芳烷基,X是0或1,y是 2〜200的整数,A和B各自表示末端基。 在一些y单元和B中,可以部分地被替换,其中R10 + L,R11和R12是氢,烷基,环烷基,芳基,芳烷基或R10和R11连接在一起,使得 形成6至8个杂环,通过用氯化亚铜或二异氰酸酯反应二胺来制备。 这些化合物是合成聚合物,特别是聚丙烯和聚乙烯的有价值的光稳定剂。