Denture adhesive composition
AssigneeWarner-Lambert Company
InventorsLori D. Kumar, Alexander M. Schobel
Life of this patent
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Abstract
A denture adhesive base composition comprising a substantially anhydrous mixture of a mixed Na/Ca salt of methyl vinyl ether-maleic acid, sodium carboxymethylcellulose, and a trivalent cation. A denture adhesive composition including this base composition is provided, as well as a method for formulating the novel adhesives of the invention.
Claims34
A denture adhesive base composition comprising an adhesive copolymer matrix comprising a substantially anhydrous mixture of a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer, sodium carboxymethylcellulose and a water soluble material which provides an amount of trivalent cations in water sufficient to crosslink said sodium carboxymethylcellulose and render said sodium carboxymethylcellulose insoluble in said adhesive copolymer matrix.
A denture adhesive composition which comprises a substantially anhydrous mixture of from about 40 to about 65 percent by weight, based on the total weight of the denture adhesive composition, of a denture adhesive base composition containing an adhesive copolymer matrix comprising a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer, sodium carboxymethylcellulose and a water soluble material which provides an amount of trivalent cations in water sufficient to crosslink said sodium carboxymethylcellulose and render said sodium carboxymethylcellulose insoluble in said adhesive copolymer matrix.
A denture adhesive composition comprising a substantially anhydrous mixture of:
- (a) from about 40 to about 65 percent by weight, based on the total weight of the denture adhesive composition, of a denture adhesive base composition containing an adhesive copolymer matrix comprising a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer, sodium carboxymethylcellulose, and a water soluble material which provides an amount of trivalent cations in water sufficient to crosslink said sodium carboxymethylcellulose and render said sodium carboxymethylcellulose insoluble in said adhesive copolymer matrix;
- and
- (b) from about 35 to about 60 percent by weight, based on the total weight of the denture adhesive composition, of additional materials selected from the group consisting of waxes, oils, preservatives, flavoring agents, colorants, sweetening agents, viscosity modifiers and mixtures thereof.
A denture adhesive composition comprising a substantially anhydrous mixture of:
- (a) a water soluble material which in water provides from about 0.1 to about 5.0 percent by weight, based on the total mixture, of a trivalent action which serves to crosslink sodium carboxymethyl cellulose and to render said sodium carboxymethyl cellulose insoluble in an adhesive copolymer matrix of component (b) below;
- (b) from about 20 to about 45 percent by weight, based on the total weight of the denture adhesive composition, of a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer;
- (c) from about 12 to about 35 percent by weight, based on the total weight of the denture adhesive composition, of sodium carboxymethylcellulose;
- and
- (d) additional materials in an amount sufficient to yield a denture adhesive composition having a total weight equal to 100 percent by weight of the total denture adhesive composition.
A method for preparing a denture adhesive base composition comprising:
- (a) preparing an adhesive copolymer matrix comprising a substantially anhydrous mixture of a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer, sodium carboxymethylcellulose, and a water soluble material which provides an amount of trivalent cations in water sufficient to crosslink said sodium carboxymethylcellulose and render said sodium carboxymethylcellulose insoluble in said adhesive copolymer matrix;
- (b) forming a denture adhesive base composition including said mixture;
- and
- (c) recovering said denture adhesive base composition.
A method for preparing a denture adhesive composition comprising:
- (a) preparing a substantially anhydrous mixture of from about 40 to about 65 percent by weight, based on the total weight of the denture adhesive composition, of a denture adhesive base composition containing an adhesive copolymer matrix comprising a mixed Na/Ca salt of methyl vinyl ether-maleic acid copolymer, sodium carboxymethylcellulose, and a water soluble material which provides an amount of trivalent cations in water sufficient to crosslink said sodium carboxymethylcellulose and render said sodium carboxymethylcellulose insoluble in said adhesive copolymer matrix;
- (b) mixing the denture adhesive base with from about 35 to about 60 percent by weight, based on the total weight of the denture adhesive composition, of additional materials selected from the group consisting of waxes, oils, preservatives, flavoring agents, colorants, sweetening agents, viscosity modifiers and mixtures thereof;
- (c) forming a denture adhesive composition including said denture adhesive base composition;
- and
- (d) recovering said denture adhesive composition.
Dependencies are inferred from the claim text.