Patent · US Active

Method for preparing polyurethane prepolymers containing isocyanate groups

US8835591B2 · kind B2 · utility

0Cited by

9References

8Claims

0Family size

Assignee

Bayer Intellectual Property GmbH · DE

Inventors

Hans-Georg Pirkl · Leverkusen, DE
Manfred Schmidt · Krefeld, DE
Robert Vieler · Dormagen, DE
Ursula Tracht · Leverkusen, DE
Peter Weuta · Leverkusen, DE
Sigurd Buchholz

Key dates

Filing date	Jul 11, 2011
Grant date	Sep 16, 2014
Priority date	—
Expiry date	Jul 11, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to the technical field of isocyanates. The present invention provides a method for preparing NCO prepolymers by reacting a stoichiometric excess of an organic isocyanate with an isocyanate-reactive component, the reaction components being mixed together and the mixture being introduced directly into a storage or transport vessel, where it reacts to completion.

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