Patent · US Expired

Stabilized filler suspensions in polyols

US4240950A · kind A · utility

16Cited by

1References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wulf von Bonin · Leverkusen, DE
Peter Vehlewald · Leichlingen, DE
Hans-Walter Illger · Rösrath, DE

Key dates

Filing date	Jul 30, 1979
Grant date	Dec 23, 1980
Priority date	—
Expiry date	Jul 30, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2375/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The instant invention is directed to a process for the production of non-disintegrating suspensions of inorganic fillers in polyhydroxyl compounds of the type used for the production of polyurethanes, comprising reacting a suspension of an inorganic filler in a polyhydroxyl compound with from 0.1 to 2%, by weight, of a polyisocyanate, based on the weight of the suspension, at a temperature of from 30.degree. to 200.degree. C. The invention is also directed to the use of the suspension as the polyol component in the production of cellular polyurethane plastics.

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