Cyanurate based fire retardant concentrates

Details Cyanurate based fire retardant concentrates Cyanurate based fire retardant concentrates

1991-09-23

1992-08-04

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 86, C08J 510, C08K 534, C08L 2336

Patent

active

051359740

ABSTRACT:
A method of preparing fire retardant concentrates wherein a base soluble cyanurate is dissolved in base and mixed with a fluid thermoplastic polymer. An amino-s-triazine is then reacted in-situ with the solubulized cyanurate to precipitate very fine insoluble cyanurate-amino-s-triazine adduct evenly distributed in the polymer. The mixture is cooled below its solidification point, binding the film particles of the insoluble adduct together by a matrix of solid thermoplastic polymer. The solidified matrix bound adduct is comminuted to form particulate thermoplastic fire retardant concentrate. The fluid thermplastic polymer may be a melt or an aqueous dispersion of a stable polymer such as nylon, polyolefin, polycarbonate, polyester, polystyrene, and polybutadiene. The particulate granules may contain concentrations as high as 65 to 95 percent of the adducts produced from soluble cyanurates such as sodium isocyanurate, and base solubulized isocyanuric acid and chlorocyanuric acid. Effective amino-s-triazines include melamine, melamine phosphate, and methylol melamine.

REFERENCES:
patent: 3660344 (1972-05-01), Dietrich et al.
patent: 4001177 (1977-01-01), Tsutsami
patent: 4317766 (1982-03-01), Kawasaki et al.
patent: 4363890 (1982-12-01), Oshita et al.

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