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. 07, 1979
Filed:
Mar. 13, 1978
Applicant:
Inventors:
Erwin Windemuth, Bad Sooden-Allendorf, DE;
Manfred Dahm, Leverkusen, DE;
Manfred Dietrich, Leverkusen, DE;
Peter Muller, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521111 ; 2604 / ; 521155 ; 521159 ; 521163 ; 521172 ;
Abstract
The invention relates to a method of making branched polysiloxane-polyoxyalkylene copolymers and to their use as stabilizers in the production of polyurethane foam plastics. The copolymers are made by reacting specified organopolysiloxanes with polyisocyanates, heat treating the NCO--containing addition products to cause branching and reacting the branched NCO--containing addition products with monofunctional polyethers. The copolymers can be used to stabilize polyurethane foam reaction mixtures.