Patent US4980391A successfully refreshed from Google Patents.
US4980391A
Expired / Lapsed
US
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Denture adhesives and methods for preparing same
Assignee: Kenvue Brands LLC
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Filing: 1988-10-27
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Granted: 1990-12-25
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Expires: 2008-10-27
Abstract
Abstract The present invention pertains to denture adhesive compositions comprising a substantially anhydrous mixture, in percentages by weight, of an adhesive component comprised of a mixture of (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer, and (b) from about 22 to about 26% sodium carboxymethylcellulose; a vehicle component comprises of a mixture of (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; and a hydration and tackifier component comprised of (d) from about 0.5 to about 2% silicon dioxide and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer. The present invention also pertains to methods by which these denture adhesive compositions may be prepared.
Inventors
- 👤 Lori D. Kumar
- 👤 Alexander M. Schobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:53
CPC Classifications
C; C09; C09J; C09J135/00; C09J135/08; A; A61; A61K; A61K6/00; A61K6/70; A61K6/71; A61K6/76; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
113 words
A denture adhesive composition comprising a substantially anhydrous mixture, in percentages by weight, of: (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type compolymer, wherein said salt has a calcium content in the range of from about 9.6 to about 13% by weight and a calcium to sodium mole ratio of from about 2.5:1 to about 4:1; (b) from about 22 to about 26% sodium carboxymethylcellulose; (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; (d) from about 0.5 to about 2% silicon dioxide; and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer.
Claim 2
Dependent Claim
113 words
A denture adhesive composition comprising a substantially anhydrous mixture, in percentages by weight, of: (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type compolymer, wherein said salt has a calcium content in the range of from about 9.6 to about 13% by weight and a calcium to sodium mole ratio of from about 2.5:1 to about 4:1; (b) from about 22 to about 26% sodium carboxymethylcellulose; (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; (d) from about 0.5 to about 2% silicon dioxide; and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer.
Claim 3
Dependent Claim
52 words
The denture adhesive composition according to claim 1 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer is present in an amount from about 29 to about 33% and sodium carboxymethylcellulose is present in an amount from about 23 to about 26%, by weight of the total composition.
Claim 4
Dependent Claim
52 words
The denture adhesive composition according to claim 2 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer is present in an amount from about 29 to about 30% and sodium carboxymethylcellulose is present in an amount from about 25 to about 26%, by weight of the total composition.
Claim 5
Dependent Claim
41 words
The denture adhesive composition according to claim 1 wherein petrolatum is present in an amount from about 22 to about 26% and mineral oil is present in an amount from about 16 to about 22%, by weight of the total composition.
Claim 6
Dependent Claim
41 words
The denture adhesive composition according to claim 4 wherein petrolatum is present in an amount from about 25 to about 26% and mineral oil is present in an amount from about 16 to about 20%, by weight of the total composition.
Claim 7
Dependent Claim
43 words
The denture adhesive composition according to claim 1 wherein silicon dioxide is present in an amount from about 0.75 to about 1.75% and poly(ethylene oxide) homopolymer is present in an amount from about 1 to about 2.75%, by weight of the total composition.
Claim 8
Dependent Claim
43 words
The denture adhesive composition according to claim 6 wherein silicon dioxide is present in an amount from about 1 to about 1.5% and poly(ethylene oxide) homopolymer is present in an amount from about 1.5 to about 2%, by weight of the total composition.
Claim 9
Dependent Claim
38 words
The denture adhesive composition according to claim 1 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer and sodium carboxymethylcellulose are present in a weight ratio of from about 2.75:1 to about 1:1, respectively.
Claim 10
Dependent Claim
38 words
The denture adhesive composition according to claim 8 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer and sodium carboxymethylcellulose are present in a weight ratio of from about 2:1 to about 1:1, respectively.
Claim 11
Dependent Claim
38 words
The denture adhesive composition according to claim 9 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer and sodium carboxymethylcellulose are present in a weight ratio of from about 1.2:1 to about 1:1, respectively.
Claim 12
Dependent Claim
27 words
The denture adhesive composition according to claim 1 wherein petrolatum and mineral oil are present in a weight ratio of from about 1.7:1 to about 1:1, respectively.
Claim 13
Dependent Claim
27 words
The denture adhesive composition according to claim 11 wherein petrolatum and mineral oil are present in a weight ratio of from about 1.5:1 to about 1:1, respectively.
Claim 14
Dependent Claim
27 words
The denture adhesive composition according to claim 12 wherein petrolatum and mineral oil are present in a weight ratio of from about 1.2:1 to about 1:1, respectively.
Claim 15
Dependent Claim
30 words
The denture adhesive composition according to claim 1 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer has a calcium content of about 12%, by weight.
Claim 16
Dependent Claim
29 words
The denture adhesive composition according to claim 1 wherein the mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer has a particle size of about 30-45 microns.
Claim 17
Dependent Claim
59 words
A denture adhesive composition of claim 1 comprising a substantially anhydrous mixture, in percentages by weight, of: (a) about 29.6% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer; (b) about 24.7% sodium carboxymethylcellulose; (c) about 21% petrolatum and about 21% mineral oil; (d) about 1.5% silicon dioxide; and (e) about 2% poly(ethylene oxide) homopolymer.
Claim 18
Dependent Claim
59 words
A denture adhesive composition of claim 1 comprising a substantially anhydrous mixture, in percentages by weight, of: (a) about 29.6% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer; (b) about 24.7% sodium carboxymethylcellulose; (c) about 22% petrolatum and about 20% mineral oil; (d) about 1.5% silicon dioxide; and (e) about 2% poly(ethylene oxide) homopolymer.
Claim 19
Dependent Claim
59 words
A denture adhesive composition of claim 1 comprising a substantially anhydrous mixture, in percentages by weight, of: (a) about 29.6% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer; (b) about 24.7% sodium carboxymethylcellulose; (c) about 25.5% petrolatum and about 16.5% mineral oil; (d) about 1.5% silicon dioxide; and (e) about 2% poly(ethylene oxide) homopolymer.
Claim 20
Independent Claim
146 words
A method for preparing a denture adhesive composition comprising a substantially anhydrous mixture comprising the steps of: A. providing the following ingredients, in percentages by weight, of: (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer wherein said salt has a calcium content in the range of about 9.6 to about 13% by weight and a calcium to sodium mole ratio of from about 2.5:1 to about 4:1; (b) from about 22 to about 26% sodium carboxymethylcellulose; (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; (d) from about 0.5 to about 2% silicon dioxide; and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer; B. preparing a mixture by admixing the ingredients in steps (a), (b), (d) and (e) with the ingredients in step (c).
Claim 21
Independent Claim
146 words
A method for preparing a denture adhesive composition comprising a substantially anhydrous mixture comprising the steps of: A. providing the following ingredients, in percentages by weight, of: (a) from about 29 to about 34% of a mixed, partial calcium/sodium salt of a methyl vinyl ether-maleic anhydride-type copolymer wherein said salt has a calcium content in the range of about 9.6 to about 13% by weight and a calcium to sodium mole ratio of from about 2.5:1 to about 4:1; (b) from about 22 to about 26% sodium carboxymethylcellulose; (c) from about 20 to about 26% petrolatum and from about 15 to about 24% mineral oil; (d) from about 0.5 to about 2% silicon dioxide; and (e) from about 1 to about 3% poly(ethylene oxide) homopolymer; B. preparing a mixture by admixing the ingredients in steps (a), (b), (d) and (e) with the ingredients in step (c).
References Cited (Backward Citations)
US4514528A
Cited
US4521551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |