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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 12624125 B1

PDFFull Text
Date of Patent:
May. 12, 2026

Filed:

Sep. 11, 2020

Phosphorus-containing cellulose esters, methods for their preparation, their use, and flame retardants

Applicant:

Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;

Inventors:

Michael Ciesielski, Darmstadt, DE;

Elias Chalwatzis, Darmstadt, DE;

Robin Nezami, Darmstadt, DE;

Benedikt Sperlich, Darmstadt, DE;

Assignee:

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V., Munich, DE;

Attorney:

Leydig, Voit & Mayer, Ltd.

Primary Examiner:

Joseph D Anthony

Int. Cl.
CPC ...
C08B 3/14 (2006.01); C08B 3/00 (2006.01); C08B 5/00 (2006.01); C08L 1/00 (2006.01); C08L 1/10 (2006.01); C08L 1/16 (2006.01); C09K 21/12 (2006.01);
U.S. Cl.
CPC ...
C08B 3/14 (2013.01); C08B 5/00 (2013.01); C08L 1/10 (2013.01); C08L 1/16 (2013.01); C09K 21/12 (2013.01); C08L 2201/02 (2013.01);
Abstract

The invention relates to cellulose esters, the ester groups of which are at least partially containing phosphorus and are based on unsaturated carboxylic acids and reactive phosphorus components, wherein the latter are preferably phosphorus derivatives of sugar alcohols or of tartaric acid derivatives. The invention also relates to methods for preparing novel phosphorus-containing cellulose esters and to their use as flame retardants for plastics.

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Ciesielski, Michael. (2026). Phosphorus-containing cellulose esters, methods for their preparation, their use, and flame retardants (U.S. Patent No. 12624125). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12624125

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

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