US3043790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butadiene-styrene copolymer-cement composition and method of preparation
Assignee: EIDP Inc
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Filing: 1957-09-20
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Granted: 1962-07-10
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Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Philip F Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:12
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A METHGOD FOR MAKING A CEMENT COMPOSITION WHICH COMPRISES INTIMATELY MIXING PORTLAND CEMENT, MINERAL AGGREGATE, A DISPERSION OF STYRENE-BUTADIENE-1,3 COPOLYMER HAVING A STYRENE TO BUTADIENE RATIO OF ABOUT 30:70 TO 70:30, WATER IN AN AMOUNT NOT IN EXCESS OF ABOUT 40% BASED ON THE WEIGHT OF SAID PORTLAND CEMENT, AND, BASED ON THE WEIGHT OF SAID COPOLYMER, (A) 2-10% OF NON-IONIC SURFACTANT, (B) 1-7.5% OF ANIONIC SURFACTANT, AT LEAST 15% OF WHICH IS A SODIUM ALKYL SULFATE IN WHICH THE ALKY GROUP CONTAINS 9-17 CARBON ATOMS, AND (C) 1-5% OF POLYORGANOSILOXANE FLUID SURFACTANT, THE SUM OF (A) AND (B) NOT EXCEEDING ABOUT 11% BY WEIGHT OF SAID COPOLYMER AND THE WEIGHT RATIO OF (A) TO (B) BEING WITHIN THE RANGE OF ABOUT 0.7:1 TO 10:1.
References Cited (Backward Citations)
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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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |