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.:
Date of Patent:
Dec. 29, 1992
Filed:
May. 11, 1992
Robert W Ward, Greensboro, NC (US);
Rogelio Tornero, Greensboro, NC (US);
Freeman J Henderson, High Point, NC (US);
Triad-Fabco, Inc., Greensboro, NC (US);
Abstract
A flame retardant composition and process which is particularly useful for rebonded foam products. The composition of the present invention includes a solid component of magnesium sulfate, boric acid, decabromodiphenylethylene oxide (DECA) and antimony trioxide and a liquid component of halogenated phosphorous. The present invention is based upon the discovery of the synergism between boric acid and DECA. The process, according to the present invention, includes the steps of forming a dispersion of the solid portion of the flame retardant composition along with a small amount of water based adhesive to a mass of foam chips. The treated chips are then dried to permit handling and storage. The dried foam chips subsequently are mixed with a conventional urethane prepolymer binder and the liquid halogenated phosphorous flame retardant compound. After mixing the foam mass is transferred to molds and steamed to allow the binder to cure. Rebonded foam manufactured by this process displays excellent physical properties while, at the same time, exhibits a Flame Spread Index I.sub.s value of less than about 25.