Maturation of polyester compositions for viscosity index control

Details Maturation of polyester compositions for viscosity index control Maturation of polyester compositions for viscosity index control

1975-12-08

1978-01-10

Person, Sandra M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 40TN, 260858, 260863, 260865, 260864, C08K 322, C08K 520

Patent

active

040678458

ABSTRACT:
The invention relates to improving the viscosity temperature dependence of a maturated moldable unsaturated polyester resin system, by utilizing a dual thickening system consisting of an oxide or hydroxide of magnesium or calcium and a polyisocyanate, which dual thickening system provides a greatly improved viscosity index, i.e., less viscosity decrease with increase in temperature, thereby providing substantial advantages upon being subjected to temperature increases such as are encountered in molding.

REFERENCES:
patent: 2568331 (1951-09-01), Frilette
patent: 3007894 (1961-11-01), Bunge et al.
patent: 3079364 (1963-02-01), Schmidt
patent: 3219604 (1965-11-01), Fischer
patent: 3288735 (1966-11-01), Watanake et al.
patent: 3431320 (1969-03-01), Baum et al.
patent: 3789030 (1974-01-01), Valgstadt et al.
patent: 3789037 (1974-01-01), Miller
patent: 3824201 (1974-07-01), McGranaghan et al.
patent: 3882189 (1975-05-01), Hudak

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