Process for the preparation of white graft polymer dispersions a

Details Process for the preparation of white graft polymer dispersions a Process for the preparation of white graft polymer dispersions a

1985-10-23

1987-08-25

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

525 41, 525 43, 525450, C08K 506, C08K 510, C08L 2902, C08L 5108

Patent

active

046893547

ABSTRACT:
White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the preparation of these polymer dispersions employ either maleate or fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol in the presence of a chain transfer agent with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkyklene oxide in the presence of salts and oxides of divalent metals.

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