Patent · US Expired

Process for the production of mercapto group-containing oligourethanes, oligourethanes obtainable by this process and their use in various polymer systems

US4742125A · kind A · utility

4Cited by

3References

16Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Manfred Schmidt · Krefeld, DE
Wolfgang Wellner · Bensberg, DE
Josef Pedain · Cologne, DE
Hermann Gruber · Leverkusen, DE

Key dates

Filing date	Feb 20, 1986
Grant date	May 3, 1988
Priority date	—
Expiry date	Feb 20, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2190/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention is directed to a process for the production of oligourethanes having terminal mercapto groups by reacting organic polyisocyanates with sub-equivalent quantities of organic polyhydroxyl compounds and a mercapto-alkanol in the presence of at least one ester of phosphoric acid containing at least one hydroxyl group bound to phosphorus. The present invention is also directed to the mercapto group-containing oligourethanes obtainable by this process and their use as binders for oxidatively-hardenable coating and sealing compositions, additives for epoxide resins and cross-linking agents for plastics materials and plastics crude products containing olefinic double bonds.

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