Denture adhesives with mixed salt copolymers of terpolymers
US6355706B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/35
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a denture adhesive composition comprising mixed salts of an alkyl vinyl ether-maleic acid copolymer wherein the mixed salt contains a cationic salt function comprising from about 5% to about 50% zinc cations; from 0% to about 2.5% of a cation selected from the group consisting of iron, boron, aluminum, vanadium, chromium, manganese, nickel, copper, yttrium, titanium, and mixtures thereof; from about 30% to about 60% free acid component; an effective adhesive amount of magnesium cations; and an effective adhesive amount of a cation selected from the group consisting of calcium, strontium, and mixtures thereof; wherein the total level of magnesium, calcium and strontium is from about 5% to about 65%. In addition the present invention relates to denture adhesive compositions comprising the above composition and at least one non-adhesive self-supporting layer. The present invention further relates to a method of increasing the adhesion of dentures to the oral cavity by applying the above compositions to dentures, directly to the oral cavity, palate or ridge of the oral cavity, or applying it to both, and thereafter securing the dentures to the ridge or …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.