| 摘要 |
<p>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 quarternary 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 cross-linkable polyester and the aromatic unsaturated monomer. </p> |
