Flame retardant polymer compositions and methods for making the same
CA 2546934 C · Owner: Warren, Leslie F. Jr. · Inventors: Liao, Ten-Luen; Warren, Leslie F. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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A fire retardant polymer composition is provided. The fire retardant polymer composition is formed of a polymer material and a polycondensation product of a plurality of monomers of an at least partially hydrolyzed phosphinatechelated metal oxide precursor. A process for making a flame retardant polymer composition is also presented. The process includes contacting a metal oxide precursor with a source of organophosphinate anions to form a phosphinatechelated metal oxide precursor. The phosphinate-chelated metal oxide precursor is at least partially hydrolyzed and then condenses to form a phosphorouscontaining metal oxide sol. The sol may be contacted with a polymer material which is …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 24, 2004 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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