US3231532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane system
Assignee: General Electric Co
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Filing: 1963-02-18
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Granted: 1966-01-25
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Frank J Modic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:41
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
AN ORGANOPOLYSILOXANE COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT, (1) 100 PARTS BY WEIGHT OF A METHYLPHENYLPOLYSILOXANE RESIN CONTAINING AN AVERAGE OF FROM ABOUT 1.1 TO 1.5 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH FROM ABOUT 30 TO 70 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING PHENYL RADICALS, (2) FROM 0.5 TO 6 PARTS OF A METHYLPHENYLPOLYSILOXANE FLUID COMPRISING PRINCIPALLY DIMETHYLSILOXANE UNITS AND DIPHENYLSILOXANE UNITS AND HAVING A VISCOSITY OF FROM ABOUT 5,000 TO 500,000 CENTISTOKES AT 25*C. AND CONTAINING AN AVERAGE OF AT LEAST 2.0 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH ABOUT 5 TO 20 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING HPENYL RADICALS, (3) FROM ABOUT .01 TO 0.10 PART BY WEIGHT OF A TRIMETHYLSILYL CHAIN-STOPPED METHYLPOLYSILOXANE FLUID HAVING A VISCOSITY OF FROM ABOUT 100 TO 10,000 CENTISTOKES AT 25*C. AND (4) UP TO ABOUT 6 PARTS BY WEIGHT AND NO MORE THAN THE AMOUNT OF COMPONENT (2) OF A METHYLPHENYLPOLYSILOXANE FLUID COMPRISING PRINCIPALLY DIMETHYLSILOXANE UNITS AND METHYLPHENYLSILOXANE UNITS AND HAVING A VISCOSITY OF FROM ABOUT 100 TO 50,000 CENTISTOKES AT 25*C. AND CONTAINING AN AVERAGE OF AT LEAST 2.0 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH FROM ABOUT 2.0 TO 6.0 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING PHENYL RADICALS.
Claim 2
Dependent Claim
215 words
AN ORGANOPOLYSILOXANE COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT, (1) 100 PARTS BY WEIGHT OF A METHYLPHENYLPOLYSILOXANE RESIN CONTAINING AN AVERAGE OF FROM ABOUT 1.1 TO 1.5 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH FROM ABOUT 30 TO 70 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING PHENYL RADICALS, (2) FROM 0.5 TO 6 PARTS OF A METHYLPHENYLPOLYSILOXANE FLUID COMPRISING PRINCIPALLY DIMETHYLSILOXANE UNITS AND DIPHENYLSILOXANE UNITS AND HAVING A VISCOSITY OF FROM ABOUT 5,000 TO 500,000 CENTISTOKES AT 25*C. AND CONTAINING AN AVERAGE OF AT LEAST 2.0 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH ABOUT 5 TO 20 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING HPENYL RADICALS, (3) FROM ABOUT .01 TO 0.10 PART BY WEIGHT OF A TRIMETHYLSILYL CHAIN-STOPPED METHYLPOLYSILOXANE FLUID HAVING A VISCOSITY OF FROM ABOUT 100 TO 10,000 CENTISTOKES AT 25*C. AND (4) UP TO ABOUT 6 PARTS BY WEIGHT AND NO MORE THAN THE AMOUNT OF COMPONENT (2) OF A METHYLPHENYLPOLYSILOXANE FLUID COMPRISING PRINCIPALLY DIMETHYLSILOXANE UNITS AND METHYLPHENYLSILOXANE UNITS AND HAVING A VISCOSITY OF FROM ABOUT 100 TO 50,000 CENTISTOKES AT 25*C. AND CONTAINING AN AVERAGE OF AT LEAST 2.0 TOTAL METHYL AND PHENYL RADICALS PER SILICON ATOM WITH FROM ABOUT 2.0 TO 6.0 PERCENT OF THE TOTAL METHYL AND PHENYL RADICALS BEING PHENYL RADICALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |