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:
Jan. 07, 2020
Filed:
Dec. 20, 2017
Covestro Llc, Pittsburgh, PA (US);
Covestro Deutschland Ag, Leverkusen, DE;
Rick L. Adkins, Canonsburg, PA (US);
Jack R. Reese, Coraopolis, PA (US);
Thomas Ernst Müller, Aachen, DE;
Christoph Gürtler, Köln, DE;
Urs Rauwald, Düsseldorf, DE;
Muhammad Afzal Subhani, Aachen, DE;
Verena Jakoby, Laufenburg, DE;
Burkhard Köhler, Zierenberg, DE;
Walter Leitner, Aachen, DE;
Covestro LLC, Pittsburgh, PA (US);
Covestro Deutschland AG, Leverkusen, DE;
Abstract
This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.