Patent · US Expired

Process for the production of graft polymers

US4426499A · kind A · utility

3Cited by

2References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Siegfried Korte · Odenthal, DE
Christian Lindner · Bensheim, DE
Carlhans Suling · Odenthal, DE
Karl-Heinz Ott

Key dates

Filing date	Feb 1, 1982
Grant date	Jan 17, 1984
Priority date	—
Expiry date	Feb 1, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F279/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This invention relates to a process for the graft polymerization of (A) from 95 to 40 parts, by weight, of at least one ethylenically unsaturated monomer in the presence of (B) from 5 to 60 parts, by weight, of a partially or completely cross-linked rubber, in which the one or more than one monomer (A) and rubber (B) in the form of a latex or of a dispersion in an organic solvent are polymerized in an aliphatic hydrocarbon as reaction medium at from 30.degree. to 100.degree. C., using a radical forming initiator, and the graft polymerization product obtained as a sedimenting suspension of particles having an average diameter of from 5 to 1,000 .mu.m is isolated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.