公开(公告)号：US5319030A

公开(公告)日：1994-06-07

申请号：US919342

申请日：1992-07-23

Applicant: James J. Harrison ,  William R. Ruhe, Jr.

Inventor： James J. Harrison ,  William R. Ruhe, Jr.

IPC: C08F8/46 ,  C08F10/00 ,  C08F210/16 ,  C08F255/02 ,  C08F255/10 ,  C10M145/16

CPC classification number: C08F255/02 ,  C08F255/10

Abstract: A process for the preparation of an alkenyl-substituted succinic anhydride wherein the alkenyl substituent has a number average molecular weight of from about 500 to 5000 and the average number of succinic groups per alkenyl group is greater than 1.2 which comprises reacting a polyolefin having an alkylvinylidene isomer content of less than about 10 percent and a number average molecular weight of about 500 to 5000 with maleic anhydride in the presence of a free radical initiator at a temperature in the range of about 80.degree. C. to 220.degree. C. for a period of less than 20 hours, wherein the molar ratio of maleic anhydride to polyolefin is about 1.0:1 to 9:1, and wherein the half-life of the decomposition of the free radical initiator is about 5 minutes to 10 hours at the reaction temperature.

Abstract translation: 一种烯基取代的琥珀酸酐的制备方法，其中链烯基取代基的数均分子量为约500至5000，每个烯基的琥珀酸基平均数大于1.2，其包括使具有烷基亚乙烯基 异构体含量小于约10％，数均分子量为约500至5000的马来酸酐在自由基引发剂存在下，在约80℃至220℃的温度下进行一段时间 小于20小时，其中马来酸酐与聚烯烃的摩尔比为约1.0:1至9:1，并且其中自由基引发剂的分解的半衰期在反应温度下为约5分钟至10小时 。