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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 11608472 B1

PDFFull Text
Date of Patent:
Mar. 21, 2023

Filed:

Apr. 01, 2022

Method for imparting flame retardancy to a substrate material

Applicant:

Chestnut Springs Llc, Ridgefield, CT (US);

Inventors:

Randall Cher Liang Cha, Singapore, SG;

Sufan Siauw, Shatin, HK;

Ralph T. Webdale, Redding, CT (US);

Assignee:

CHESTNUT SPRINGS LLC, Ridgefield, CT (US);

Attorney:

Ohlandt, Greeley, Ruggiero and Perle, LLP

Primary Examiner:

Lynda Salvatore

Int. Cl.
CPC ...
C09K 21/04 (2006.01); C09K 21/10 (2006.01); C09K 21/02 (2006.01); C09K 21/14 (2006.01); C08K 3/32 (2006.01); C08L 1/02 (2006.01); C08L 3/02 (2006.01);
U.S. Cl.
CPC ...
C09K 21/04 (2013.01); C08K 3/32 (2013.01); C09K 21/02 (2013.01); C09K 21/10 (2013.01); C09K 21/14 (2013.01); C08K 2003/322 (2013.01); C08K 2003/323 (2013.01); C08L 1/02 (2013.01); C08L 3/02 (2013.01);
Abstract

A method for imparting flame retardancy to a substrate material. The method comprises adding to a substrate material a flame retardant composition. The flame retardant composition comprises at least one flame retardant salt, a nitrogen-containing compound, and optionally water. The at least one flame retardant salt comprises an ammonium salt of phosphoric acid. The ammonium salt of phosphoric acid comprises water soluble ammonium polyphosphate (APP). The water soluble ammonium polyphosphate has a total nitrogen as N from about 5 to about 15 weight percent, and a total phosphorus as POfrom about 30 to about 40 weight percent, based on the total weight of the ammonium polyphosphate (APP).

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