Patent US2986549A successfully refreshed from Google Patents.
US2986549A
Expired / Lapsed
US
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Organopolysiloxane resins
Assignee: General Electric Co
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Filing: 1959-08-20
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Granted: 1961-05-30
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Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Mcloughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08K5/16; C08K5/17; C08K5/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A RESINOUS COMPOSITION OF MATTER OF IMPROVED STABILITY AGAINST INCREASE IN VISCOSITY AT TEMPERATURES OF FROM 25* TO 50*C. COMPRISING (1) A METHYL PHENYLPOLYSILOXANE RESIN SOLUTION CONTAINING AN AVERAGE OF FROM 1.1 TO 1.85 TOTAL METHYL AND PHENYL GROUPS PER SILICON ATOM IN THE METHYL PHENYLPOLYSILOXANE, (2) A QUATERNARY COMPOUND CURING CATALYST SELECTED FROM THE CLASS CONSISTING OF QUATERNARY COMPOUNDS HAVING THE FORMULA (R'')4NOR" AND QUATERNARY PHOSPHONIUM COMPOUNDS HAVING THE FORMULA (R'')4POR" WHERE R'' REPRESENTS MEMBERS SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALKYL, ARYL, ALKARYL, AND ARALKYL RADICALS AND R" IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND ALKYL RADICALS, AND (3) ACETIC ACID, THE SAID ACETIC ACID BEING PRESENT IN AN AMOUNT EQUAL TO FROM 2 TO 50 MOLS PER MOL OF THE QUATERNARY COMPOUND CURING CATALYST.
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |