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

1985-05-03

1990-08-07

Kight, III, 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, 528 69, 528 75, C08L 7500

Patent

active

RE0332917

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 reparation of these polymer dispersions employ either isomerized maleate containing polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol, a polycarboxylic acid anhydride and an alkylene oxide in the presence of salts and oxides of divalent metals.

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