US4363667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementitious composition and cement produced therefrom
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-03-31
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Granted: 1982-12-14
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Expires: 2001-03-31
Abstract
Abstract A cementitious composition comprising (a) at least one hydraulic cement, (b) water, (c) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of the composition, and (d) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 micron, and a cement product produced therefrom.
Inventors
- 👤 James D. Birchall
- 👤 Kevin Kendall
- 👤 Anthony J. Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:49
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
100 words
A cementitious composition comprising: (a) at least one hydraulic cement, (b) water in an amount of not more than 25% by weight of said hydraulic cement, (c) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of the composition in an amount of 1 to 10% by weight of the hydraulic cement in the composition, and (d) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 micron, in an amount of 0.5 to 10% by weight of the hydraulic cement in the composition.
Claim 2
Dependent Claim
100 words
A cementitious composition comprising: (a) at least one hydraulic cement, (b) water in an amount of not more than 25% by weight of said hydraulic cement, (c) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of the composition in an amount of 1 to 10% by weight of the hydraulic cement in the composition, and (d) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 micron, in an amount of 0.5 to 10% by weight of the hydraulic cement in the composition.
Claim 3
Dependent Claim
17 words
A cementitious composition as claimed in claim 1 in which the polymeric additive comprises hydroxypropyl methyl cellulose.
Claim 4
Dependent Claim
15 words
A cementitious composition as claimed in claim 1 in which the polymeric additive comprises polyacrylamide.
Claim 5
Dependent Claim
28 words
A cementitious composition as claimed in any one of claims 1 to 3 in which the particulate material has an ultimate particle size of less than 0.05 micron.
Claim 6
Dependent Claim
14 words
A cementitious composition as claimed in claim 4 which particulate material comprises carbon black.
Claim 7
Dependent Claim
15 words
A cementitious composition as claimed in claim 4 in which the particulate material comprises silica.
Claim 8
Dependent Claim
107 words
A cement product produced by setting of a cementitious composition comprising: (a) at least one hydraulic cement, (b) water in an amount of not more than 25% by weight of said hydraulic cement, (c) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of the composition in an amount of 1 to 10% by weight of the hydraulic cement in the composition, and (d) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 micron, in an amount of 0.5 to 10% by weight of the hydraulic cement in the composition.
Claim 9
Dependent Claim
107 words
A cement product produced by setting of a cementitious composition comprising: (a) at least one hydraulic cement, (b) water in an amount of not more than 25% by weight of said hydraulic cement, (c) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of the composition in an amount of 1 to 10% by weight of the hydraulic cement in the composition, and (d) at least one particulate material insoluble in the composition and having an ultimate particle size of less than 0.1 micron, in an amount of 0.5 to 10% by weight of the hydraulic cement in the composition.
Claim 10
Dependent Claim
19 words
A cement product as claimed in claim 7 which product has a flexural strength of at least 40 MPa.
Claim 11
Dependent Claim
33 words
A cement product as claimed in claim 7 or claim 8 in which not more than 2% of the total volume of the product comprises pores having a maximum dimension exceeding 15 microns.
Claim 12
Dependent Claim
51 words
A composition comprising (a) at least one hydraulic cement, (b) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of a water-containing composition, and (c) at least one particulate material insoluble in water and having an ultimate particle size of less than 0.1 micron.
Claim 13
Dependent Claim
51 words
A composition comprising (a) at least one hydraulic cement, (b) at least one polymeric water-soluble or water-dispersible additive which is capable of aiding in the processing of a water-containing composition, and (c) at least one particulate material insoluble in water and having an ultimate particle size of less than 0.1 micron.
Claim 14
Dependent Claim
15 words
A cement product produced by setting of a cementitious composition as claimed in claim 1.
Claim 15
Dependent Claim
13 words
A cementitious product produced by a cementitious composition as claimed in claim 7.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |