The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
May. 20, 1993
Hanns-Peter Muller, Odenthal, DE;
Hans-Joachim Scholl, Cologne, DE;
Manfred Kapps, Bergisch Gladbach, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
A new process for the standardization and stabilization with simultaneous increase of reactivity of organic polyisocyanates and the polyisocyanates produced by this process. A polyisocyanate is mixed with compounds having at least one epoxide group which are represented by a specified formula. This mixture is then stabilized with a silylating agent and/or alkylating agent represented by specified formula. The polyisocyanate/epoxide mixture may optionally be heated before the stabilizing agents are added. These polyisocyanates are useful in the production of polyisocyanate addition products.