Patent · US Expired

Graft polymer dispersions

US5238977A · kind A · utility

7Cited by

6References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Karl-Erwin Piejko · Bensberg, DE
Christian Lindner · Bensheim, DE
Siegfried Korte · Odenthal, DE

Key dates

Filing date	Jun 19, 1992
Grant date	Aug 24, 1993
Priority date	—
Expiry date	Jun 19, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S525/902
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Free-flowing, stable dispersions of crosslinked rubbers in the form of discrete particles having an average diameter of 0.1 to 3 .mu.m in organic liquids, containing PA0 I) up to 60% by weight (based on the dispersion as a whole) of a crosslinked, rubber-like, particulate graft polymer of a) a crosslinked silicone rubber as core and crosslinked acrylate rubber b) graft polymerized thereon as the rubber and PA0 II) a liquid, organic N,N-substituted amide as the continuous organic phase, and a process for their production.

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