Method of thickening liquid polyester system with clay

Details Method of thickening liquid polyester system with clay Method of thickening liquid polyester system with clay

1980-03-12

1982-02-09

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 40R, C08L 9100

Patent

active

043149197

ABSTRACT:
Liquid unsaturated polyester resins may be thickened and made thixotropic by addition of a colloidal, gelling grade clay such as attapulgite and a quaternary ammonium surfactant under moderate shear. This thixotropic polyester composition is formed without making provision for first chemically reacting clay and surfactant. For enhanced long-term stability a tertiary amine surfactant having an alkyl group and two polyoxyethylene groups attached to the nitrogen may be added to the above composition. For polyester resins having a styrene monomer content greater than 35%, the clay and surfactant are mixed with styrene first, to form a pregel, prior to addition of the polyester resin to be thickened.

REFERENCES:
patent: 2909740 (1959-10-01), Seidel et al.
patent: 2969337 (1961-01-01), Goodwin et al.
patent: 3014001 (1961-12-01), Murray
patent: 3328231 (1967-06-01), Sergovic
patent: 3974125 (1976-08-01), Oswald et al.
patent: 4081496 (1978-03-01), Finlayson
patent: 4216135 (1980-08-01), Finlayson

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