Denture adhesive
US5763554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Oct 11, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an improved denture adhesive composition having extended holding power accompanied by adhesion building properties during use and having increased gel adhesion, which composition consists essentially of (a) from about 10 to about 35 wt. % lower alkyl vinyl ether-maleic acid copolymer wherein from 0 to about 90 wt. % of the copolymer carboxyl units are converted to a mixture of salts selected from the group of calcium, sodium, strontium, aluminum, zinc, magnesium and potassium; (b) 10-35 wt. % of a crosslinked terpolymer of alkyl vinyl ether, maleic anhydride and a C.sub.16 -C.sub.20 alkyl acrylate or methacrylate, or vinyl ether; crosslinked with a C.sub.6 -C.sub.14 diene, e.g. 9-decadiene, and their salts; (c) 10-35 wt. % of a cohesive agent; in a weight ratio of between about 2:1 and about 1:2 with respect to the copolymer; and (d) from about 30 to about 70 wt. % of an oil base as a carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.