Patent · US Expired

Heat-setting mixtures of a polyisocyanate with a polyol which have a long shelf life, and their preparation

US4507456A · kind A · utility

11Cited by

7References

4Claims

0Family size

Assignee

BASF SE

Inventors

Rainer Blum · Ludwigshafen, DE
Herbert Spoor · Schifferstadt, DE
Gerhard Holtmann · Munster, DE
Rolf Osterloh · Lechenich, DE

Key dates

Filing date	Feb 21, 1984
Grant date	Mar 26, 1985
Priority date	—
Expiry date	Feb 21, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S528/902
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

In heat-setting mixtures of a polyisocyanate with a polyol which have a long shelf life at room temperature, the polyisocyanate is present, in the form of discrete particles, in the polyol, and the polyisocyanate particles are deactivated at their surface. From 0.01 to 0.499 equivalent percent of the total amount of isocyanate groups present is deactivated by a primary or secondary amine or water, or from 0.01 to 20 equivalent percent of the said isocyanate groups is deactivated with a compound containing carboxyl, phenolic hydroxyl, amide or hydrazide groups. These mixtures are useful as coating compositions, adhesives and sealant materials, particularly as undersealants for motor vehicles.

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