公开(公告)号：US3875697A

公开(公告)日：1975-04-08

申请号：US32627973

申请日：1973-01-24

Applicant: LABOFINA SA

Inventor： BRACKE WILLIAM J I

IPC: C08K3/16 ,  C09K8/24 ,  C09K17/48 ,  C08F45/24 ,  A01G7/00

CPC classification number: C09K17/48 ,  C08K3/16 ,  C08K3/24 ,  C09K8/24 ,  Y10S106/90 ,  Y10S106/901 ,  Y10S111/917 ,  Y10S260/31 ,  Y10S524/916 ,  C08L33/26

Abstract: A process for the cross-linking of polymers of acrylamide comprising treating an aqueous solution of said polymers at a temperature of from 0.degree.C to 100.degree.C with an aqueous solution of a salt selected from the group consisting of the hypochlorite and hypobromite salts of alkali metals and alkalineearth metals.

公开(公告)号：US3912794A

公开(公告)日：1975-10-14

申请号：US41524073

申请日：1973-11-12

Applicant: LABOFINA SA

Inventor： BRACKE WILLIAM J I

IPC: C08F279/04 ,  C08L47/00

CPC classification number: C08F279/04

Abstract: A process for the production of ABS type resins consisting of styrenic compound acrylonitrile compound copolymer and polybutadiene rubber on which said styrenic compound and acrylonitrile compound are grafted, said process comprising carrying out a mass-copolymerization of a styrenic compound and an acrylonitrile compound in the presence of polybutadiene rubber, at a temperature of between 75* and 125*C, up to formation of a mass copolymer having a viscosity of between about 5,000 and 100,000 centipoises when measured at 65*C and in which the continuous phase is a styrenic compound acrylonitrile compound copolymer which contains styrenic and acrylonitrile compounds, adding to said mass copolymer an aqueous dispersion of a suspending agent and then a surfactive agent, and thereafter carrying out a suspension polymerization at a temperature of between 75* and 150*C.