Thixotropic cross-linkable unsaturated polyester compositions an

Details Thixotropic cross-linkable unsaturated polyester compositions an Thixotropic cross-linkable unsaturated polyester compositions an

1983-02-01

1984-09-25

Griffin, Ronald W.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

252193, C08L 6700, C08L 6708, C08L 6706, C09K 300

Patent

active

044736754

ABSTRACT:
A thixotropic cross-linkable unsaturated polyester composition is provided. The composition comprises an aromatic unsaturated monomer having an amount of an organoclay dispersed therein. The organoclay comprises the reaction product of a smectite type clay and quaternary ammonium compounds. The latter are an admixture of (a) a dimethyl di(hydrogenated tallow) ammonium compound and (b) a dimethyl benzyl(hydrogenated tallow) ammonium compound. The organoclay has a quaternary ammonium compound to clay milliequivalent ratio, by weight, of at least 95, and more generally can be up to at least as high as 140, expressed on a 100% active clay basis. The cross-linkable unsaturated polyester further comprises a liquid unsaturated polyester mixed with the monomer. The amount of organoclay in the monomer and the amount of (a) and (b) are amounts sufficient to produce a cross-linkable polyester composition having a thixotropic index of at least about 2.5, and preferably of at least about 3.0. This invention also provides for the aromatic unsaturated monomer, and for processes for producing the crosslinkable polyester and the aromatic unsaturated monomer.

REFERENCES:
patent: 3974125 (1976-08-01), Oswald et al.
patent: 4081496 (1978-03-01), Finlayson
patent: 4216135 (1980-08-01), Finlayson
patent: 4240951 (1980-12-01), Moll et al.
patent: 4365030 (1982-12-01), Oswald et al.

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