Mineral filler fire retardant composition and method

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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428407, 521 76, 521 92, 521138, 521906, 521907, 523179, 523200, 523205, 524157, 524159, 524169, 524392, C08K 900, C08J 904

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048762911

ABSTRACT:
An improved mineral filler fire retardant composition and method are provided wherein the filler is surface treated with a polyfunctional isocyanate. This surface treatment reacts to form a polymeric coating thereby reducing both the free moisture and soluble soda level. This improved filler results in superior physical properties in polymer resins and improved processing characteristics in urethane foams.

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