US3868340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture adhesive preparation
Assignee: Warner Lambert Co LLC
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Filing: 1974-06-05
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Granted: 1975-02-25
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Expires: 1994-06-05
Abstract
Abstract An improved anhydrous denture adhesive is prepared to contain a mixture of a cationic polymeric material and a natural anionic gum material as the adhesive ingredient. The mixture may be formulated as a powder or anhydrous paste, which, when applied to dentures and exposed to moisture, develops superior adhesive properties. Suitable cationic materials include at least one of the following: copolymers of substituted or unsubstituted acrylamide with vinyl quaternary ammonium salts and copolymers of substituted or unsubstituted acrylamide with vinyl and alkyl substituted vinyl pyridinium salts. As the anionic component there may be used at least one natural gum, such as gum karaya, gum arabic, gum Shiraz, gum tragacanth, pectin, pectinates, algin, and alginates.
Inventors
- 👤 James J Keegan
- 👤 Howard Rubin
- 👤 Ram N Gidwani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:33
CPC Classifications
C; C09; C09J; C09J105/00; C09J133/00; C09J133/24; C09J133/26; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
8 words
A COPOLYMER OF AN ACRYLAMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
A COPOLYMER OF AN ACRYLAMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
40 words
A DENTURE ADHESIVE COMPRISING A SUBSTANTIALLY ANHYDROUS MIXTURE OF: A. FROM ABOUT 1.0% TO ABOUT 80% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DENTURE ADHESIVE, OF AT LEAST ONE CATONIC POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
Claim 4
Dependent Claim
40 words
A DENTURE ADHESIVE COMPRISING A SUBSTANTIALLY ANHYDROUS MIXTURE OF: A. FROM ABOUT 1.0% TO ABOUT 80% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DENTURE ADHESIVE, OF AT LEAST ONE CATONIC POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
Claim 5
Dependent Claim
49 words
A denture adhesive according to claim 1 wherein the cationic polymeric material is a copolymer of acrylamide with a vinyl quaternary ammonium salt selected from the group consisting of trialkylaminoalkyl acrylate salts, trialkylaminoalkyl methacrylate salts, and vinyloxyalkyltrialkylammonium salts wherein the alkyl group contains from 1 to 3 carbon atoms.
Claim 6
Dependent Claim
73 words
a copolymer of an acrylamide havinG the formula (I) above with a vinyl or alkyl-substituted vinyl pyridinum salt, wherein the alkyl group is 1 to 7 carbon lower alkyl; and B. from about 20% to about 99% by weight, based on the total weight of the denture adhesive, of at least one anionic gum selected from the group consisting of gum karaya, gum arabic, gum Shiraz, gum tragacanth, pectin, pectinates, algin and alginates.
Claim 7
Dependent Claim
73 words
a copolymer of an acrylamide havinG the formula (I) above with a vinyl or alkyl-substituted vinyl pyridinum salt, wherein the alkyl group is 1 to 7 carbon lower alkyl; and B. from about 20% to about 99% by weight, based on the total weight of the denture adhesive, of at least one anionic gum selected from the group consisting of gum karaya, gum arabic, gum Shiraz, gum tragacanth, pectin, pectinates, algin and alginates.
Claim 8
Dependent Claim
73 words
A COPOLYMER OF AN ACRYLAMIDE HAVING THE FORMULA (I) ABOVE WITH A VINYL OR ALKYL-SUBSTITUTED VINYL PYRIDINUM SALT, WHEREIN THE ALKYL GROUP IS 1 TO 7 CARBON LOWER ALKYL; AND B. FROM ABOUT 20% TO ABOUT 99% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DENTURE ADHESIVE, OF AT LEAST ONE ANIONIC GUM SELECTED FROM THE GROUP CONSISTING OF GUM KARAYA, GUM ARABIC, GUM SHIRAZ, GUM TRAGACANTH, PECTIN PECTINES, ALGIN AND ALGINATES.
Claim 9
Dependent Claim
73 words
A COPOLYMER OF AN ACRYLAMIDE HAVING THE FORMULA (I) ABOVE WITH A VINYL OR ALKYL-SUBSTITUTED VINYL PYRIDINUM SALT, WHEREIN THE ALKYL GROUP IS 1 TO 7 CARBON LOWER ALKYL; AND B. FROM ABOUT 20% TO ABOUT 99% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DENTURE ADHESIVE, OF AT LEAST ONE ANIONIC GUM SELECTED FROM THE GROUP CONSISTING OF GUM KARAYA, GUM ARABIC, GUM SHIRAZ, GUM TRAGACANTH, PECTIN PECTINES, ALGIN AND ALGINATES.
Claim 10
Dependent Claim
39 words
A denture adhesive according to claim 2 comprising a substantially anhydrous mixture of from about 3.0% to about 50% by weight of the cationic polymeric material, and from about 30% to about 90% by weight of the anionic gum.
Claim 11
Dependent Claim
23 words
A denture adhesive according to claim 3 wherein the anionic gum is selected from the group consisting of gum karaya and gum arabic.
Claim 12
Dependent Claim
33 words
A denture adhesive according to claim 3 wherein the cationic polymeric material is a copolymer of acrylamide with a trialkylaminoalkyl methacrylate salt having from 1 to 3 carbon atoms in the alkyl group.
Claim 13
Dependent Claim
14 words
A denture adhesive according to claim 4 wherein the anionic gum is gum arabic.
Claim 14
Dependent Claim
33 words
A denture adhesive according to claim 1 which additionally contains from about 10% to about 75% by weight, based on the weight of the total denture adhesive compositions of non-toxic, powdered, excipient materials.
Claim 15
Dependent Claim
46 words
A denture adhesive according to claim 1 which additionally contains from about 30% to about 75% by weight, based on the weight of the total denture adhesive composition of at least one cream base material selected from the group consisting of petrolatum, natural and synthetic oils.
Claim 16
Dependent Claim
56 words
A denture adhesive according to claim 1 which additionally contains from about 30% to about 75% by weight, based on the weight of the total denture adhesive composition, of a cream base material which is a combination of mineral oil with a minor amount of a polyethylene wax having a molecular weight of 1000 to 20,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |