Denture adhesives and methods for preparing same
US4980391A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1988 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention pertains to denture adhesive compositions comprising a substantially anhydrous mixture, in percentages by weight, of an adhesive component comprised of a mixture of (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer, and (b) from about 22 to about 26% sodium carboxymethylcellulose; a vehicle component comprises of a mixture of (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; and a hydration and tackifier component comprised of (d) from about 0.5 to about 2% silicon dioxide and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer. The present invention also pertains to methods by which these denture adhesive compositions may be prepared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.