Vinyl acetate/ethylene copolymer emulsions for paper coating compositions
First Claim
1. A copolymer emulsion comprising a vinyl ester/ethylene copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) a vinyl ester of a C1 -C12 alkanoic acid, (b) about 0.5 to 15 wt% ethylene, (c) 0.1 to 10 wt% of an ethylenically unsaturated C3 -C10 mono- or dicarboxylic acid or half ester of such dicarboxylic acid with a C1 -C18 alkanol, (d) 0.05 to 10 wt% of a dicyclopentadienyl acrylate, and (e) 0-50 wt% of an alkyl acrylate.
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Abstract
Aqueous vinyl ester/ethylene copolymer emulsions possessing good dry pick and wet pick strengths in paper coating compositions comprise a vinyl ester/ethylene copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) a vinyl ester of a C1 -C12 alkanoic acid, (b) about 0.5 to 15 wt % ethylene, (c) about 0.1 to 10 wt % of an ethylenically unsaturated mono- or dicarboxylic acid or half ester thereof, (d) about 0.05 to 10 wt % of a dicyclopentadienyl acrylate, and (e) 0-50 wt % of an alkyl acrylate.
23 Citations
24 Claims
- 1. A copolymer emulsion comprising a vinyl ester/ethylene copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) a vinyl ester of a C1 -C12 alkanoic acid, (b) about 0.5 to 15 wt% ethylene, (c) 0.1 to 10 wt% of an ethylenically unsaturated C3 -C10 mono- or dicarboxylic acid or half ester of such dicarboxylic acid with a C1 -C18 alkanol, (d) 0.05 to 10 wt% of a dicyclopentadienyl acrylate, and (e) 0-50 wt% of an alkyl acrylate.
- 11. A copolymer emulsion comprising a vinyl acetate copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) vinyl acetate, (b) 0.5 to 15 wt% ethylene, (c) 0.1 to 10 wt% of an ethylenically unsaturated C3 -C10 mono- or dicarboxylic acid or half ester of such dicarboxylic acid with a C1 -C18 alkanol, (d) 0.05 to 10 wt% of dicyclopentadienyl acrylate or dicyclopentadienyl methacrylate, and, optionally, (e) less than about 20 wt% of a C1 -C8 alkyl acrylate or methacrylate.
- 22. A copolymer emulsion comprising 40 to 60 wt% of a vinyl acetate copolymer colloidally dispersed in an aqueous medium, the copolymer consisting essentially of (a) vinyl acetate, (b) 2 to 8 wt% ethylene, (c) 0.3 to 3 wt% maleic acid, and (d) 0.25 to 3 wt% of dicyclopentadienyl acrylate or dicyclopentadienyl methacrylate.
Specification