US3121069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of styrene-butadiene copolymer and polyorganosiloxane
Assignee: Delaware Research and Development Corp
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Filing: 1956-04-25
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Granted: 1964-02-11
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Expires: 1976-04-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:08
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/248; C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/10; C08L57/00; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/18; C08G77/22; C08G77/24; C08G77/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A WATER REPELLENT COMPOSITION COMPRISING A HOMOGENEOUS MECHANICAL MIXTURE OBTAINED BY MILLING TOGETHER: (1) A FUSIBLE CROSS-LINKD THERMOPLASTIC POLYMERIZATION PRODUCT OF ETHYLENICALLY UNSATURATED MONOMERS HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT EXCEEDING 5,000,000 MEASURED BY SEDIMENTATION-DIFFUSION TECHNIQUES, THE POLYMERIZATION PRODUCT BEING A STYRENE-BUTADIENE COPOLYMER, AND (2) A MILLABLE POLYORGANOSILOXANE GUM WHICH IS POLYDIMETHYL SILOXANE GUM, SAID POLYORGANOSILOXANE HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT EXCEEDING 150,000, THE COMPONENTS OF SAID MIXTURE BEING IN A WEIGHT RATIO RANGE FROM BETWEEN 50 AND 99.5 PARTS OF THE THERMOPLASTIC POLYMERIZATION PRODUCT TO BETWEEN ABOUT 50 AND 1/2 PARTS OF THE POLYORGANOSILOXANE.
Claim 2
Dependent Claim
96 words
A WATER REPELLENT COMPOSITION COMPRISING A HOMOGENEOUS MECHANICAL MIXTURE OBTAINED BY MILLING TOGETHER: (1) A FUSIBLE CROSS-LINKD THERMOPLASTIC POLYMERIZATION PRODUCT OF ETHYLENICALLY UNSATURATED MONOMERS HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT EXCEEDING 5,000,000 MEASURED BY SEDIMENTATION-DIFFUSION TECHNIQUES, THE POLYMERIZATION PRODUCT BEING A STYRENE-BUTADIENE COPOLYMER, AND (2) A MILLABLE POLYORGANOSILOXANE GUM WHICH IS POLYDIMETHYL SILOXANE GUM, SAID POLYORGANOSILOXANE HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT EXCEEDING 150,000, THE COMPONENTS OF SAID MIXTURE BEING IN A WEIGHT RATIO RANGE FROM BETWEEN 50 AND 99.5 PARTS OF THE THERMOPLASTIC POLYMERIZATION PRODUCT TO BETWEEN ABOUT 50 AND 1/2 PARTS OF THE POLYORGANOSILOXANE.
References Cited (Backward Citations)
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US2356128A
Cited
US2442059A
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US2494329A
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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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |