EP0225706A2
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EP
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Cement-forming compositions
Assignee: BTG International Ltd
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Filing: 1986-10-22
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Granted: —
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Expires: 2006-10-22
Abstract
Abstract A hardenable composition which comprises (i) a poly(carboxylic acid) or precursor thereof (as herein defined); (ii) a particulate ion-leachable silicate, aluminosilicate or metal oxide reactable with (i) in the presence of water to set to a hardened composition; and (iii) a compound comprising at least one phosphorus-carbon or phosphorus-boron covalent bond, in an amount effective in service to extend the working time of the composition.
Inventors
- 👤 Alan Donald Wilson
- 👤 Havard John Prosser
- 👤 David Michael Groffman
- 👤 Gary Sydney Sayers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/28; A; A61; A61K; A61K6/00; A61K6/30; A61K6/50; A61K6/54; A61K6/80; A61K6/884; A61K6/887; A61K6/889; C04B2111/00; C04B2111/00474; C04B2111/00836
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
65 words
A hardenable composition which comprises (i) a poly(carboxylic acid) or precursor thereof (as herein defined); (ii) a particulate ion-leachable silicate, aluminosilicate or metal oxide reactable with (i) in the presence of water to set to a hardened composition; and (iii) a compound comprising at least one phosphorus-carbon or phosphorus-boron covalent bond, in an amount effective in service to extend the working time of the composition.
Claim 2
Dependent Claim
65 words
A hardenable composition which comprises (i) a poly(carboxylic acid) or precursor thereof (as herein defined); (ii) a particulate ion-leachable silicate, aluminosilicate or metal oxide reactable with (i) in the presence of water to set to a hardened composition; and (iii) a compound comprising at least one phosphorus-carbon or phosphorus-boron covalent bond, in an amount effective in service to extend the working time of the composition.
Claim 3
Dependent Claim
31 words
A hardenable composition according to Claim 1 wherein (i) comprises an acrylic acid homopolyer or copolymer acid with one or more aconitic, fumaric, itaconic, maleic, mesaconic, methacrylic, muconic or tiglic acid.
Claim 4
Dependent Claim
14 words
A hardenable composition according to Claim 1 or 2 wherein (ii) comprises zinc oxide.
Claim 5
Dependent Claim
15 words
A hardenable composition according to any preceding claim wherein (ii) comprises a (fluoro)aluminosilicate glass powder.
Claim 6
Dependent Claim
18 words
A hardenable composition according to Claim 4 wherein the glass has a composition within the following system: or
Claim 7
Dependent Claim
15 words
A hardenable composition according to any preceding claim wherein (iii) comprises a polybasic phosphonic acid.
Claim 8
Dependent Claim
16 words
A hardenable composition according to Claim 6 wherein (iii) also comprises at least one amino group.
Claim 9
Dependent Claim
16 words
A hardenable composition according to Claim 7 wherein the amino group is a tertiary amino group.
Claim 10
Dependent Claim
20 words
A hardenable composition according to any of the preceding claims wherein (iii) is soluble in an aqueous solution of (i).
Claim 11
Dependent Claim
21 words
A hardenable composition according to any preceding claim which further comprises a complexing agent soluble in an aqueous solution of (i).
Claim 12
Dependent Claim
15 words
A hardenable composition according to Claim 10 wherein the complexing agent comprises a fluoride ligand.
Claim 13
Dependent Claim
17 words
A hardenable composition according to Claim 10 or 11 wherein the complexing agent comprises a chelating agent.
Claim 14
Dependent Claim
17 words
A hardenable composition according to Claim 12 wherein the chelating agent comprises a plurality of carboxyl groups.
Claim 15
Dependent Claim
19 words
A hardenable composition according to Claim 13 wherein the chelating agent comprises aconitic, itaconic, maleic, mellitic or tricarballylic acid.
Claim 16
Dependent Claim
18 words
A hardenable composition according to Claim 12 wherein the chelating agent also comprises at least one hydroxyl group.
Claim 17
Dependent Claim
17 words
A hardenable composition according to Claim 15 wherein the chelating agent comprises citric, malic or tartaric acid.
Claim 18
Dependent Claim
16 words
A hardenable composition according to Claim 12 wherein the chelating agent comprises a multivalent metal chelate.
Claim 19
Dependent Claim
20 words
A hardenable composition according to Claim 17 wherein the chelating agent comprises a beta-diketone metal chelate or an EDTA chelate.
Claim 20
Dependent Claim
23 words
A hardenable composition according to any preceding claim wherein (iii) is present in an amount of up to 20% by weight of (i).
Claim 21
Dependent Claim
23 words
A hardenable composition according to any preceding claim wherein (iii) is present in an amount of up to 10% by weight of (i).
Claim 22
Dependent Claim
85 words
A mixture suitable for use in preparing a hardenable composition according to any preceding claim which comprises a compound (iii) as defined in any of Claims 1, 6 to 8, 19 and 20 and (a) a complexing agent as defined in any of Claims 10 to 19 or (b) a poly(carboxylic acid) or precursor thereof (i) as defined in Claim 1 or 2 or (c) a particulate ion-leachable silicate, (fluoro)aluminosilicate or metal oxide (ii) as defined in any of Claims 1, 3, 4 or 5.
Claim 23
Dependent Claim
36 words
A mixture suitable for use in preparing a hardenable composition according to any of Claims 1 to 20 which comprises a compound (iii) as defined in any of Claims 1, 6 to 8, 19 and 20.
Claim 24
Dependent Claim
9 words
An aqueous mixture according to Claim 21 or 22.
Claim 25
Dependent Claim
37 words
A hardenable composition according to any of Claims 1 to 20 comprising a dry mixture of the poly(carboxylic acid) or precursor thereof (i) in particulate form; particulate ion-leachable silicate, (fluoro)aluminosilicate or metal oxide (ii); and compound (iii).
Claim 26
Dependent Claim
27 words
A hardenable composition according to any of Claims 1 to 20 or 24 supplied as a two-component pack, one of which components may comprise an aqueous medium.
Claim 27
Dependent Claim
18 words
A hardenable composition according to any of Claims 1 to 20 or 24 supplied as a sheet material.
Claim 28
Dependent Claim
62 words
A process for preparing a poly(carboxylate) cement which comprises mixing water, a poly(carboxylic acid) or precursor thereof (i), as defined in Claim 1 or 2 and a particulate ion-leachable silicate, (fluoro)aluminosilicate or metal oxide as defined in any of Claims 1, 3, 4 or 5 with (iii) a compound as defined in any of Claims 1, 6 to 8, 19 and 20.
Claim 29
Dependent Claim
22 words
A process according to Claim 27 wherein the mixture further comprises a complexing agent defined in any of Claims 10 to 18.
Claim 30
Dependent Claim
16 words
A hardened mass of a poly(carboxylate) cement prepared by the process of Claims 27 or 28.
References Cited (Backward Citations)
No citation records indexed.
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