US3931083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-reducing admixtures for ceramic pastes
Assignee: Resonac Holdings Corp
•
Filing: 1974-01-30
•
Granted: 1976-01-06
•
Expires: 1994-01-30
Abstract
Abstract Water-reducing additives for ceramic material, and especially for cement paste, mortar or concrete, which comprise a phenolic compound having a sulfo radical or a sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said phenolic compound molecules are substituted by atoms of sodium, potassium or calcium.
Inventors
- 👤 Isamu Sasaki
- 👤 Iwao Kojima
- 👤 Fujio Namigata
- 👤 Yoku Ashigame
- 👤 Hiroshi Mihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:38
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B24/20; C04B24/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A ceramic paste comprising a hydraulic cement, water and as a water-reducing additive between about 0.1 to 2.0% by weight based on the weight of said cement, of phenol substituted with at least one member selected from the group consisting of sulfo radical and sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said phenol compound are substituted by atoms selected from the group consisting of sodium, potassium and calcium.
Claim 2
Dependent Claim
73 words
A ceramic paste comprising a hydraulic cement, water and as a water-reducing additive between about 0.1 to 2.0% by weight based on the weight of said cement, of phenol substituted with at least one member selected from the group consisting of sulfo radical and sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said phenol compound are substituted by atoms selected from the group consisting of sodium, potassium and calcium.
Claim 3
Dependent Claim
16 words
The ceramic paste of claim 1 which is concrete comprising portland cement, sand, gravel and water.
Claim 4
Dependent Claim
15 words
The ceramic paste of claim 1 which is mortar comprising portland cement, sand and water.
Claim 5
Dependent Claim
81 words
A ceramic paste comprising hydraulic cement, water and as a water-reducing additive between about 0.1 to 2.0% by weight based on the weight of said cement of a water-soluble primary condensation product of formaldehyde and a phenol derivative having at least one member selected from the group consisting of sulfo radical and sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said condensation product are substituted by atoms selected from the group consisting of sodium, potassium and calcium.
Claim 6
Dependent Claim
81 words
A ceramic paste comprising hydraulic cement, water and as a water-reducing additive between about 0.1 to 2.0% by weight based on the weight of said cement of a water-soluble primary condensation product of formaldehyde and a phenol derivative having at least one member selected from the group consisting of sulfo radical and sulfomethyl radical, wherein the hydrogen atoms of acidic radicals in part of said condensation product are substituted by atoms selected from the group consisting of sodium, potassium and calcium.
Claim 7
Dependent Claim
28 words
The ceramic paste of claim 4 wherein the amount of additive is between about 0.5 to 1% by weight based on the weight of cement in the paste.
Claim 8
Dependent Claim
16 words
The Ceramic paste of claim 7 which is concrete comprising portland cement, sand gravel and water.
Claim 9
Dependent Claim
15 words
The ceramic paste of claim 4 which is mortar comprising portland cement, sand and water.
References Cited (Backward Citations)
US3687603A
Cited
US3677979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |