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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.:

US 11161938 B1

PDFFull Text
Date of Patent:
Nov. 02, 2021

Filed:

Dec. 19, 2017

Production of siloxane-containing block copolycarbonates by means of compatibilizers

Applicant:

Covestro Deutschland Ag, Leverkusen, DE;

Inventors:

Alexander Meyer, Düsseldorf, DE;

Klaus Horn, Dormagen, DE;

John Huggins, Leverkusen, DE;

Assignee:

Covestro Deutschland AG, Leverkusen, DE;

Attorney:

Faegre Drinker Biddle & Reath LLP

Primary Examiner:

David J Buttner

Int. Cl.
CPC ...
C08L 69/00 (2006.01); C08G 64/18 (2006.01); C08G 77/448 (2006.01); C08G 77/06 (2006.01); C08L 83/04 (2006.01); C08G 77/16 (2006.01);
U.S. Cl.
CPC ...
C08G 77/448 (2013.01); C08G 64/186 (2013.01); C08G 77/06 (2013.01); C08L 69/00 (2013.01); C08L 83/04 (2013.01); C08G 77/16 (2013.01);
Abstract

The subject of the present invention is a process for the production of polysiloxane-polycarbonate block cocondensates, wherein A) at least one polycarbonate is reacted in the melt with B) at least one hydroxyaryl-terminated polysiloxane with use C) of an additive which is selected from at least one from the group consisting of a siloxane containing aromatic substituents (component C1) and a polysiloxane-polycarbonate block cocondensate A) or polysiloxane-polycarbonate block cocondensate, which can also be different from A) (component C2).

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Meyer, Alexander. (2021). Production of siloxane-containing block copolycarbonates by means of compatibilizers (U.S. Patent No. 11161938). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11161938

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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