Denture adhesive
AssigneeISP Investments Inc.
InventorWilliam E. Prosise
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) an excess, with respect to said copolymer, of a non-crosslinked, non-ionic natural guar gum; 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 building properties comprising (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 are converted to a mixture of metal salts, which metals are selected from the group consisting of calcium, sodium, strontium, zinc, magnesium, potassium and aluminum, (b) an excess, with respect to the total said polymer, of a non-ionic, natural guar gum in a non-crosslinked or hydrolyzed form and (c) from about 30 to about 70 wt. % based on total composition of an oil carrier.
An improved denture adhesive composition having extended holding time and viscosity building properties comprising (a) from about 10 to about 35 wt. % lower alkyl vinyl ether-maleic acid copolymer having a number average molecular weight of between about 500,000 and about 3,000,000 wherein from about 0 to about 90 wt. % of the carboxyl units in the polymer are converted to a mixture of metal salts, which metals are selected from the group consisting of calcium, sodium, strontium, zinc, magnesium, potassium and aluminum, (b) an excess, with respect to the total said polymer, of a non-ionic, natural guar gum in a non-crosslinked or hydrolyzed form and (c) from about 30 to about 70 wt. %, based on total composition, of an oil carrier.
Dependencies are inferred from the claim text.