Low viscosity aromatic polyols and methods for their preparation

Details Low viscosity aromatic polyols and methods for their preparation Low viscosity aromatic polyols and methods for their preparation

1983-07-13

1987-10-20

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521 48, 521 485, 521172, 528274, 528275, 528288, 528297, 5283081, 5283082, 560 89, 560 91, 560 93, C08G 1814

Patent

active

047014776

ABSTRACT:
A method for preparing aromatic polyols useful for the production of polyurethane and polyisocyanurate polymers involves digesting scrap polyalkylene terephthalate polymers with a digesting agent, typically a low molecular weight polyol. The digestion product is then treated with an alkylene oxide to produce a low viscosity polyol which displays excellent stability over long term storage.

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