Denture adhesive
US5298534A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Mar 1, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/26
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to an improved 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, zinc, magnesium and potassium; (b) a crosslinked non-ionic natural guar gum in a mole ratio of between about 0.75:1 and about 5:1 with respect to the copolymer; and (c) from about 30 to about 70 wt. % oil base as a carrier. The invention also relates to the preparation and use of said adhesive for affixing dentures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.