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.

Date of Patent:
Oct. 27, 2026

Filed:

Dec. 18, 2019
Applicant:

Lanxess Corporation, Pittsburgh, PA (US);

Inventors:

Julia Yue Lee, Naugatuck, CT (US);

Simon J. Bonyhady, Waterbury, CT (US);

Qingliang He, Cheshire, CT (US);

Ramesh Sharma, Cheshire, CT (US);

Assignee:

LANXESS Corporation, Pittsburgh, PA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 21/12 (2006.01); C07F 9/38 (2006.01); C08K 3/105 (2018.01); C08K 3/16 (2006.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C08K 5/5333 (2006.01);
U.S. Cl.
CPC ...
C09K 21/12 (2013.01); C07F 9/3808 (2013.01); C08K 3/105 (2018.01); C08K 3/16 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 5/5333 (2013.01); C08K 2003/2265 (2013.01);
Abstract

A phosphorus-containing flame retardant is produced by preparing a reaction mixture, the reaction mixture including a phosphonic acid, a solvent for the phosphonic acid, and a metal or suitable metal compound, and reacting the phosphonic acid and the metal or suitable metal compound under conditions as described herein. The chemical composition of the resulting flame retardant product leads to excellent flame retardancy and exhibits high thermal stability. The presently disclosed flame retardants are useful, for example, in polymer compositions, particularly thermoplastics processed at high temperatures, over a wide range of applications.


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Lee, Julia. (2026). Method of preparing phosphorus-containing flame retardants and their use in polymer compositions (U.S. Patent No. 12774414). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774414

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