Denture adhesive
AssigneeISP Investments Inc.
InventorsWilliam E. Prosise, Mahmoud Amin
Life of this patent
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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.
Claims17
An improved denture adhesive composition having extended holding time and viscosity retaining properties consisting essentially of (a) from about 10 to about 35 wt. % lower alkyl vinyl ether-maleic acid copolymer wherein from about 0 to about 90 wt. % of the carboxyl units in the polymer is converted to a mixture of metal salts, which metals are selected from the group consisting of calcium, sodium, strontium, zinc, magnesium and potassium, (b) a natural-boron crosslinked guar gum in a weight ratio of between about 0.75:1and about 5:1with respect to said copolymer of component (a) and (c) from about 30 to about 70 wt. % of an oil carrier.
Dependencies are inferred from the claim text.