US 12,104,102 B2 · Aqueous-based release coating compositions

Abstract

Aqueous-based release coating compositions are disclosed. The disclosed aqueous-based release coating compositions are particularly suitable for use with pressure sensitive adhesives. In some embodiments, the aqueous-based release coating compositions include (A) a vinyl-based emulsion copolymer comprising a copolymerizable acid monomer, (B) a silicone-based emulsion comprising a mixture of amine-, polyol-functional siloxane and epoxy-, glycol-functional siloxane, and (C) a polymeric dispersant comprising an acid functional group. In some embodiments, the weight ratio of silicone-based emulsion (B) to polymeric dispersant (C) in the aqueous-based release coating compositions is from 2:1 to 3:1. The disclosed release coating compositions are suitable for use in, inter alia, tape applications.

Claims12

Dependent claims

An aqueous-based release coating composition, comprising:

(A) a vinyl-based emulsion copolymer comprising a copolymerizable acid monomer comprising maleic anhydride;
(B) from 0.5 wt % to 8 wt % of a silicone-based emulsion comprising a mixture of amine-, polyol-functional siloxane and epoxy-, glycol-functional siloxane, based on the total dry weight of the release coating composition;
and
(C) a polymeric dispersant comprising an acid functional group comprising maleic anhydride or a sodium salt thereof,
wherein the dry weight ratio of silicone-based emulsion (B) to polymeric dispersant (C) in the aqueous-based release coating composition is from 2:1 to 3:1.

2 more elements

Dependencies are inferred from the claim text.

Aqueous-based release coating compositions

Life of this patent

Aqueous-based release coating compositions

Life of this patent

Abstract

Claims12