US4381947A
Expired / Lapsed
US
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Settable alginate compositions
Assignee: LACLEDE PROFESSIONAL PRODUCTS Inc A CORP OF NY
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Filing: 1982-05-17
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Granted: 1983-05-03
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Expires: 2002-05-17
Abstract
Abstract An oral, settable, dental composition is prepared by interacting Component A containing an alkali metal alginate in an aqueous paste with Component B containing a divalent metal salt such as calcium sulfate and a reaction rate retarder such as tetrasodium pyrophosphate in a fluid plasticizer paste that is substantially free of unbound water.
Inventors
- 👤 Michael A. Pellico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
C; C08; C08L; C08L5/00; C08L5/04; A; A61; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
246 words
A two-component system interactable to form an oral, settable, dental composition comprising: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of unbound water, said Component B being so formulated that a pre-selected quantity thereof contains from about 0.5 to about 1.2 parts by weight of divalent metal salt per 1.0 part by weight of alkali metal alginate in Component A, said reaction rate retarder being present in an amount from about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt, and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulfate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
Claim 2
Dependent Claim
246 words
A two-component system interactable to form an oral, settable, dental composition comprising: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of unbound water, said Component B being so formulated that a pre-selected quantity thereof contains from about 0.5 to about 1.2 parts by weight of divalent metal salt per 1.0 part by weight of alkali metal alginate in Component A, said reaction rate retarder being present in an amount from about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt, and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulfate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
Claim 3
Dependent Claim
43 words
The two-component system of claim 1 wherein Component B is so formulated that a pre-selected quantity thereof contains from about 0.75 to about 1.0 part by weight of divalent metal salt per 1.0 part by weight of alkali metal alginate in Component A.
Claim 4
Dependent Claim
38 words
The two-component system of claim 1 wherein the reaction rate retarder is present in Component B in an amount from about 0.04 to about 0.08 part by weight per 1.0 part by weight of said divalent metal salt.
Claim 5
Dependent Claim
36 words
The two-component system of claim 1 wherein the fluid plasticizer is present in Component B in an amount from about 0.9 to about 1.5 parts by weight per 1.0 part by weight of divalent metal salt.
Claim 6
Dependent Claim
28 words
The two-component system of claim 1 wherein the divalent metal salt of fatty acid is selected from the group consisting of calcium oleate, zinc laurate, and ferrous stearate.
Claim 7
Dependent Claim
14 words
The two-component system of claim 1 wherein the divalent metal salt is calcium sulfate.
Claim 8
Dependent Claim
13 words
The two-component system of claim 1 wherein the fluid plasticizer is vegetable oil.
Claim 9
Dependent Claim
19 words
The two-component system of claim 1 wherein the fluid plasticizer is a mixture of vegetable oil and polyether glycol.
Claim 10
Dependent Claim
12 words
The two-component system of claim 1 wherein the fluid plasticizer is glycerol.
Claim 11
Dependent Claim
44 words
The two-component system of claim 1 wherein Component B includes from about 0.02 to about 1.0 part by weight of metal oxide selected from the group consisting of zinc oxide, magnesium oxide and mixtures thereof per 1.0 part by weight of divalent metal salt.
Claim 12
Dependent Claim
56 words
The two-component system of claim 1 wherein Component A includes a filler in an amount from about 3 to about 10 parts by weight per 1.0 part by weight of alkali metal alginate, and water in an amount from about 13 to about 25 parts by weight per 1.0 part by weight of alkali metal alginate.
Claim 13
Dependent Claim
53 words
The two-component system of claim 11 wherein Component A includes a reaction rate retarder selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof in an amount from about 0.02 to about 0.08 part by weight per 1.0 part by weight of alkali metal alginate.
Claim 14
Dependent Claim
33 words
The two-component system of claim 12 wherein Component A includes a humectant in an amount from about 0.1 to about 1.0 part by weight per 1.0 part by weight of alkali metal alginate.
Claim 15
Independent Claim
236 words
A method for preparing an oral, settable, dental composition which comprises interacting: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of bound water, said divalent metal salt being present in an amount from about 0.5 to about 1.2 parts by weight per 1.0 part by weight of alkali metal alginate, said reaction rate retarder being present in an amount of about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt, and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulfate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
Claim 16
Independent Claim
236 words
A method for preparing an oral, settable, dental composition which comprises interacting: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of bound water, said divalent metal salt being present in an amount from about 0.5 to about 1.2 parts by weight per 1.0 part by weight of alkali metal alginate, said reaction rate retarder being present in an amount of about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt, and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulfate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
Claim 17
Dependent Claim
27 words
The method of claim 14 wherein the divalent metal salt of fatty acid is selected from the group consisting of calcium oleate, zinc laurate, and ferrous stearate.
Claim 18
Dependent Claim
13 words
The method of claim 14 wherein the divalent metal salt is calcium sulfate.
Claim 19
Dependent Claim
12 words
The method of claim 14 wherein the fluid plasticizer is vegetable oil.
Claim 20
Dependent Claim
18 words
The method of claim 14 wherein the fluid plasticizer is a mixture of vegetable oil and polyether glycol.
Claim 21
Dependent Claim
11 words
The method of claim 14 wherein the fluid plasticizer is glycerol.
Claim 22
Dependent Claim
46 words
The method of claim 14 wherein Component B includes a metal oxide selected from the group consisting of zinz oxide, magnesium oxide and mixtures thereof in an amount from about 0.02 to about 1.0 part by weight per 1.0 part by weight of divalent metal salt.
Claim 23
Dependent Claim
55 words
The method of claim 14 wherein Component A includes a filler in an amount from about 3 to about 10 parts by weight per 1.0 part by weight of alkali metal alginate, and water in an amount from about 13 to about 25 parts by weight per 1.0 part by weight of alkali metal alginate.
Claim 24
Dependent Claim
52 words
The method of claim 21 wherein Component A includes a reaction rate retarder selected from the group consisting of phosphate, pyrophosphate, citrate, and silicate salts of sodium, potassium and mixtures thereof, in an amount from about 0.02 to about 0.08 part by weight per 1.0 part by weight of alkali metal alginate.
Claim 25
Dependent Claim
32 words
The method of claim 22 wherein Component A includes a humectant in an amount from about 0.1 to about 1.0 part by weight per 1.0 part by weight of alkali metal alginate.
Claim 26
Dependent Claim
232 words
A solid, coherent, dental composition prepared by interacting: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of bound water, said divalent metal salt being present in an amount from about 0.5 to about 1.2 parts by weight per 1.0 part by weight of alkali metal alginate, said reaction rate retarder being present in an amount from about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulphate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
Claim 27
Dependent Claim
232 words
A solid, coherent, dental composition prepared by interacting: (i) Component A consisting essentially of an alkali metal alginate selected from the group consisting of sodium alginate, potassium alginate and mixtures thereof in an aqueous paste; and (ii) Component B consisting essentially of a slightly water soluble, divalent metal salt and a reaction rate retarder in a fluid plasticizer paste that is substantially free of bound water, said divalent metal salt being present in an amount from about 0.5 to about 1.2 parts by weight per 1.0 part by weight of alkali metal alginate, said reaction rate retarder being present in an amount from about 0.02 to about 0.13 part by weight per 1.0 part by weight of said divalent metal salt and said fluid plasticizer being present in an amount from about 0.75 to about 2 parts by weight per 1.0 part by weight of said divalent metal salt, wherein: said divalent metal salt is a member selected from the group consisting of calcium sulfate, ferrous sulphate, zinc sulfate, divalent metal salt of fatty acid and mixtures thereof, said reaction rate retarder is a member selected from the group consisting of phosphate, pyrophosphate, citrate and silicate salts of sodium, potassium and mixtures thereof, and said fluid plasticizer is a member selected from the group consisting of glycerol, propylene glycol, polyether glycol, oleyl alcohol, silicone oil, mineral oil, vegetable oil and mixtures thereof.
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) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |