Low viscosity polymer polyols via dilution

Details Low viscosity polymer polyols via dilution Low viscosity polymer polyols via dilution

1982-03-01

1984-02-14

Lee, Lester L.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

524565, 524566, 524567, 524568, 524569, 524575, 524762, 528 75, C08G 1814, C08G 1863

Patent

active

044317549

ABSTRACT:
A low viscosity copolymer polyahl dispersion is prepared by polymerizing polymer particles in a polyahl medium, to a first solids concentration and thereafter diluting the dispersion to a second lower solids concentration. The resulting diluted dispersion has a lower viscosity than if the dispersion were prepared directly at the lower solids level. The invention has particular advantage when used with "all acrylonitrile" dispersions. The copolymer polyahl dispersions are useful in the manufacture of urethane and isocyanurate foams.

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