Composition for improved adhesion of vinylidene chloride latex to ionomer films
AssigneeUnion Oil Company of California
InventorJohn Biale
Life of this patent
Estimating the term…
Abstract
An adhesive composition, particularly useful for laminating carboxylate-containing films, comprises an aqueous dispersion of a film-forming vinylidene chloride copolymer wherein the vinylidene chloride copolymer includes on a comonomer weight basis: (a) from about 45 to about 90 percent vinylidene chloride, (b) from about 5 to about 25 percent of a polar comonomer having one or more hydroxyl groups, and (c) from about 0 to about 30 percent of a plasticizing monomer for vinylidene chloride in combination with: (d) a cross-linking agent dissolved in the continuous aqueous phase of the vinylidene chloride copolymer.
Claims30
An aqueous dispersion of a film-forming vinylidene chloride copolymer comprising on a comonomer weight basis:
- (a) from about 45 to 90 percent vinylidene chloride,
- (b) from about 5 to about 25 percent of a polar comonomer having one or more hydroxyl groups, and
- (c) a cross-linking agent for hydroxyl groups selected from the group consisting of boric acid and water soluble metal salts of boric acid dissolved in the aqueous dispersion of the vinylidene chloride copolymer.
A film-forming aqueous dispersion of a vinylidene chloride copolymer comprising on a comonomer weight basis:
- (a) from about 70 to about 82 percent vinylidene chloride, and
- (b) from about 7 to about 12 percent of a polar comonomer having one more more hydroxyl groups
- (c) from about 5 to about 23 percent of a plasticizing comonomer for vinylidene chloride and
- (d) from about 0.07 to about 1.0 equivalents per equivalent of hydroxyl group contained in said polar comonomer of a cross-linking agent for hydroxyl groups selected from the group consisting of boric acid and water soluble salts of boric acid dissolved in the aqueous dispersion of the vinylidene chloride copolymer.
The dispersion of claim 24 wherein said nonionic surfactant is selected from the group consisting of compounds having the general formula:
- ##STR2## wherein R.sub.1 is selected from the group consisting of C.sub.8 to C.sub.10 alkyl radicals, R.sub.2 is a hydrogen radical, and n ranges from about 20 to about 40, and said anionic surfactant comprises a mixture of sodium dicyclohexylsulfosuccinate and an ammonium neutralized alkylphenoxy (polyethyleneoxy) ethylphosphate.
A dispersion of a film-forming vinylidene chloride copolymer comprising on a comonomer weight basis:
- (a) from about 70 to about 82 percent vinylidene chloride,
- (b) from about 7 to about 12 percent of a polar comonomer selected from the group consisting of 2-hydroxyethylacrylate and 2-hydroxypropylacrylate,
- (c) from about 6 to about 23 percent of a plasticizing agent for vinylidene chloride chosen from the group consisting of ethylhexylacrylate and methyl, ethyl and butyl acrylates and methacrylates and
- (d) from about 0.07 to about 1.0 equivalents per equivalent of hydroxyl group contained in said polar comonomer of a cross-linking agent for hydroxyl groups selected from the group consisting of boric acid, and water-soluble metal salts of boric acid.
An adhesive composition comprising a vinylidene chloride copolymer, said copolymer comprising on a comonomer weight basis:
- (a) from about 45 to about 90 percent vinylidene chloride,
- (b) from about 5 to about 25 percent of a polar comonomer having one or more hydroxyl groups, and
- (c) from about 0.1 to about 30 percent of a plasticizing comonomer for vinylidene chloride reacted to cross-link with:
- (d) a cross-linking agent for hydroxyl groups selected from the group consisting of boric acid and water soluble metal salts of boric acid.
An adhesive composition comprising the reaction product of:
- (a) a vinylidene chloride copolymer comprising:
- (1) from about 45 to about 90 percent vinylidene chloride, and
- (2) from about 5 to about 25 percent of a polar comonomer having one or more hydroxyl groups,
- (3) from about 0.1 to about 30 percent of a plasticizing monomer for vinylidene chloride, and
- (b) a cross-linking agent for hydroxyl groups selected from the group consisting of boric acid and water soluble metal salts of boric acid.
Dependencies are inferred from the claim text.