US4337186A
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Hardenable compositions
Assignee: BTG International Ltd
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Filing: 1979-01-17
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Granted: 1982-06-29
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Expires: 1999-01-17
Abstract
Abstract PCT No. PCT/GB79/00014 Sec. 371 Date Sep. 17, 1979 Sec. 102(e) Date Aug. 9, 1979 PCT Filed Jan. 17, 1979 PCT Pub. No. WO79/00521 PCT Pub. Date Aug. 9, 1979. Compositions which are hardenable in the presence of water to form a poly(carboxylate) cement contain a metal salt which accelerates the setting of the composition.
Inventors
- 👤 Stephen Crisp
- 👤 Alan D. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:02
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/28; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; A61K6/889; A61L; A61L15/00; A61L15/07; A61L15/12; A61L27/00; A61L27/40; A61L27/44; A61L27/446; C08; C08K; C08K3/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
105 words
A hardenable composition which comprises (i) a poly(carboxylic acid) selected from the group consisting of homopolymers and copolymers of unsaturated aliphatic carboxylic acids or precursor thereof that is converted to said poly(carboxylic acid) on hydrolysis thereof; (ii) a particulate ion-leachable silicate or aluminosilicate glass reactable with (i) in the presence of water to set to a hardened composition; and (iii) an inorganic metal salt which accelerates the setting of the composition selected from the group consisting of a silver (I) salt, a barium salt and a multivalent metal salt, the cation of which has a standard electrode potential E ox o less than 2.6 volts.
Claim 2
Dependent Claim
105 words
A hardenable composition which comprises (i) a poly(carboxylic acid) selected from the group consisting of homopolymers and copolymers of unsaturated aliphatic carboxylic acids or precursor thereof that is converted to said poly(carboxylic acid) on hydrolysis thereof; (ii) a particulate ion-leachable silicate or aluminosilicate glass reactable with (i) in the presence of water to set to a hardened composition; and (iii) an inorganic metal salt which accelerates the setting of the composition selected from the group consisting of a silver (I) salt, a barium salt and a multivalent metal salt, the cation of which has a standard electrode potential E ox o less than 2.6 volts.
Claim 3
Dependent Claim
18 words
A hardenable composition according to claim 1 wherein (iii) comprises a silver (I) salt or a barium salt.
Claim 4
Dependent Claim
17 words
A hardenable composition according to claim 2 wherein (iii) comprises silver nitrate, barium chloride or barium fluoride.
Claim 5
Dependent Claim
34 words
A hardenable composition according to claim 1 wherein (i) comprises an acrylic acid homopolymer or copolymer of acrylic acid with one or more of aconitic, fumaric, itaconic, maleic, mesaconic, methacrylic, muconic, or tiglic acid.
Claim 6
Dependent Claim
30 words
A hardenable composition according to claim 1 wherein (iii) comprises a multivalent metal salt the cation of which has a standard electrode potential E ox o less than 2.6 volts.
Claim 7
Dependent Claim
22 words
A hardenable composition according to claim 5 wherein (iii) comprises a salt of aluminium, cadmium, magnesium, mercury (II), silver (II), or zirconium.
Claim 8
Dependent Claim
19 words
A hardenable composition according to claim 6 wherein (iii) comprises a salt of aluminium, magnesium, silver (II) or zirconium.
Claim 9
Dependent Claim
12 words
A hardenable composition according to claim 1 wherein (iii) comprises a fluoride.
Claim 10
Dependent Claim
21 words
A hardenable composition according to claim 8 wherein (iii) comprises aluminium fluoride, magnesium fluoride, stannous fluoride, silver difluoride or zinc fluoride.
Claim 11
Dependent Claim
17 words
A hardenable composition according to claim 1 wherein (iii) is soluble in an aqueous solution of (i).
Claim 12
Dependent Claim
20 words
A hardenable composition according to claim 1 which further comprises a complexing agent soluble in an aqueous solution of (i).
Claim 13
Dependent Claim
15 words
A hardenable composition according to claim 11 wherein the complexing agent comprises a fluoride ligand.
Claim 14
Dependent Claim
15 words
A hardenable composition according to claim 11, wherein the complexing agent comprises a chelating agent.
Claim 15
Dependent Claim
17 words
A hardenable composition according to claim 13 wherein the chelating agent comprises a plurality of carboxyl groups.
Claim 16
Dependent Claim
19 words
A hardenable composition according to claim 14 wherein the chelating agent comprises aconitic, itaconic, maleic, mellitic or tricarballic acid.
Claim 17
Dependent Claim
18 words
A hardenable composition according to claim 13 wherein the chelating agent also comprises at least one hydroxyl group.
Claim 18
Dependent Claim
17 words
A hardenable composition according to claim 16 wherein the chelating agent comprises citric, malic or tartaric acid.
Claim 19
Dependent Claim
16 words
A hardenable composition according to claim 13 wherein the chelating agent comprises a multivalent metal chelate.
Claim 20
Dependent Claim
20 words
A hardenable composition according to claim 18 wherein the chelating agent comprises a beta-diketone metal chelate or an EDTA chelate.
Claim 21
Dependent Claim
18 words
A hardenable composition according to claim 18 wherein the multivalent metal is the same as that in (iii).
Claim 22
Dependent Claim
35 words
A hardenable composition according to claim 13 wherein (iii) comprises a multivalent metal fluoride or a multivalent metal chloride the cation of which has a standard electrode potential E ox o less than 2.6 volts.
Claim 23
Dependent Claim
26 words
A hardenable composition according to claim 1 wherein (iii) is present in an amount of up to 15% by weight, based on the weight of (i).
Claim 24
Dependent Claim
22 words
A hardenable composition according to claim 13 wherein the weight ratio of (iii) to the chelating agent is from 15:1 to 1:15.
Claim 25
Dependent Claim
14 words
A hardenable composition according to claim 1 wherein (ii) comprises a (fluor)aluminosilicate glass powder.
Claim 26
Dependent Claim
32 words
A hardenable composition according to claim 1 comprising a dry mixture of the poly(carboxylic acid) or precursor thereof (i) in particulate form; particulate ion-leachable silicate or aluminosilicate (ii); and metal salt (iii).
Claim 27
Dependent Claim
21 words
A hardenable composition according to claim 1 supplied as a two-component pack, one of which components may comprise an aqueous medium.
Claim 28
Dependent Claim
12 words
A hardenable composition according to claim 1 supplied as a sheet material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |