公开(公告)号：US3893983A

公开(公告)日：1975-07-08

申请号：US43508274

申请日：1974-01-21

Applicant: SNAM PROGETTI

Inventor： BRANCACCIO ALDO ,  GHETTI GIUSEPPE ,  BRUZZONE MARIO

IPC: C08F8/00 ,  C08C19/00 ,  C08C19/28 ,  C08F8/46 ,  C08F27/00

CPC classification number: C08C19/28

Abstract: Polyisoprene of improved green strength is prepared by reacting maleic acid with polyisoprene of a high cis 1,4 content and containing at least 3% imbibition water by feeding moist polyisoprene and maleic acid to an extruder-desiccator at a temperature in the range of 140* to 200*C and at a rate such that 0.01 to 5 parts by weight of maleic acid are fed per 100 parts of polyisoprene, whereby the reaction of the maleic acid with the polyisoprene and the desiccation thereof occur at the same time.

Abstract translation: 通过将马来酸与高顺式1,4-含量的聚异戊二烯反应并通过将湿聚异戊二烯和马来酸加入到挤出机 - 干燥器中，在140℃的温度范围内将含有至少3％吸水的马来酸反应来制备改善生坯强度的聚异戊二烯 以每100份聚异戊二烯加入0.01至5重量份马来酸的速率，由此马来酸与聚异戊二烯的反应和干燥同时发生。