Process for the preparation of graft polymer dispersions employi

Details Process for the preparation of graft polymer dispersions employi Process for the preparation of graft polymer dispersions employi

1978-06-07

1979-07-17

Lilling, Herbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 306R, 260 308R, 260 312XA, 260 314R, 260 332R, 260 334R, 260 342, 526 78, 526 88, 526204, 526211, 526218, 526219, 525404, 525412, 526273, 525529, C08F 206, C08F 404, C08F 2044, C08L 6706

Patent

active

041614682

ABSTRACT:
Graft polymer dispersions are prepared by the in situ polymerization in the presence of a free radical catalyst of an ethylenically unsaturated monomer or mixture of monomers in a liquid polyol employing as the free radical catalyst a liquid unsymmetrically-substituted azo compound having a melting point less than 30.degree. C. and a ten hour half-life between 55.degree. C. and 100.degree. C. The dispersions are low viscous liquids which may be advantageously employed in the preparation of polyurethane foams.

REFERENCES:
patent: 3652639 (1972-03-01), Pizzini et al.
patent: 3875258 (1975-04-01), Patton et al.
patent: 3950317 (1976-04-01), Patton et al.
patent: 4007165 (1977-02-01), MacLeay et al.

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