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US 4,735,986 AGranted
Vinyl acetate/ethylene copolymer emulsions useful as carpet adhesives
AssigneeAir Products and Chemicals, Inc.
InventorJohn G. Iacoviello
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AssigneeAir Products and Chemicals, Inc.
InventorJohn G. Iacoviello
Estimating the term…
A vinyl acetate-ethylene copolymer emulsion comprising an aqueous colloidal dispersion of a copolymer containing 65 to 90 wt % vinyl acetate and 10 to 35 wt % ethylene prepared by the emulsion polymerization of the monomers in the presence of a stabilizing system consisting essentially of an 86 to 90 mole % partially hydrolyzed polyvinyl alcohol, a 98 to 99+ mole % fully hydrolyzed polyvinyl alcohol, in a partially hydrolyzed polyvinyl alcohol:fully hydrolyzed polyvinyl alcohol weight ratio from 3:1 to 1:3, and a nonionic polyalkoxylated surfactant. Also disclosed is a carpet backing adhesive composition comprising such a vinyl acetate-ethylene copolymer emulsion, about 0.1 to 3 parts by weight dispersant, about 0.1 to 10 parts by weight thickening agent and between 300 and about 1000 parts by weight filler, all of the components being per 100 parts of the copolymer.
A carpet backing adhesive polymeric composition consisting essentially of 100 parts by weight of a vinyl acetate-ethylene copolymer emulsion, about 0.1 to 3 parts by weight dispersant, about 0.1 to 10 parts by weight thickening agent and between 400 and about 1000 parts by weight calcium carbonate, the vinyl acetate-ethylene copolymer emulsion comprising an aqueous colloidal dispersion of a copolymer containing 65 to 90 wt % vinyl acetate and 10 to 35 wt % ethylene prepared by the emulsion polymerization of the monomers in the presence of 4 to 8 wt %, based on vinyl acetate, of a stabilizing system consisting essentially of a fully (98 to 99+ mole %) hydrolyzed polyvinyl alcohol, a partially (86 to 90 mole %) hydrolyzed polyvinyl alcohol, the polyvinyl alcohols present at 3 to 5 wt % and in a weight ratio ranging from 3:1 to 1:3, and 1 to 3 wt % of an alkyl phenoxy (polyethyleneoxy) ethanol.
In a carpet backing adhesive polymeric composition comprising a vinyl acetate-ethylene copolymer emulsion, dispersant, thickening agent and calcium carbonate filler, the improvement which comprises a vinyl acetate-ethylene copolymer emulsion consisting essentially of an aqueous colloidal dispersion of a copolymer containing 85 to 90 wt % vinyl acetate and 10 to 15 wt % ethylene prepared by the emulsion polymerization of the monomers in the presence of 4 to 8 wt %, based on vinyl acetate, of a stabilizing system consisting essentially of a fully (98 to 99+ mole %) hydrolyzed polyvinyl alcohol, a partially (86 to 88 mole %) hydrolyzed polyvinyl alcohol, the polyvinyl alcohols present at 3 to 5 wt % and in a 3:1 to 1:3 weight ratio, and 1 to 3 wt % of a nonylphenoxy (polyethyleneoxy) ethanol.
Dependencies are inferred from the claim text.