Patent US4337186A successfully refreshed from Google Patents.
US4337186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable compositions
Assignee: BTG International Ltd
•
Filing: 1979-01-17
•
Granted: 1982-06-29
•
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 06:51
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.
References Cited (Backward Citations)
GB115598A
Cited
US3814717A
Cited
GB1366031A
Cited
US4082722A
Cited
US3986998A
Cited
GB1407013A
Cited
US3856737A
Cited
US4209434A
Cited
GB1422337A
Cited
GB1450557A
Cited
DE2439882A1
Cited
US4016124A
Cited
GB1484454A
Cited
GB1463173A
Cited
US4107845A
Cited
GB1495255A
Cited
US3962267A
Cited
GB1504520A
Cited
US4089830A
Cited
US4154717A
Cited
US4141144A
Cited
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 |