Patent US3579467A successfully refreshed from Google Patents.
US3579467A
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Organopolysiloxanes having hydroxyaryl substituents
Assignee: General Electric Co
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Filing: 1968-11-27
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Granted: 1971-05-18
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Expires: 1988-11-27
Overview & Biblio
Claims (0)
Citations (0)
Maintenance Schedule (3)
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Abstract
Abstract ORGANOPOLYSILOXANES USEFUL AS HYDRAULIC FLUIDS COMPRISE ORGANOPOLYSILOXANES IN WHICH A MAJORITY OF THE SILOXANE GROUPS CONTAIN METHYL RADICALS AND HIGHER ALKYL RADICALS, AND A MINOR PROPORTION OF THE SILOXANE GROUPS CONTAIN SILICON-BONDED TERTIARY BUTYL-SUBSTITUTED HYDROXYARYL RADICALS ATTACHED TO SILICON THROUGH A DIVALENT PROPYLENE RADICAL. OPTIONALLY, A MINOR AMOUNT OF ARYL AND ARALKYL RADICALS CAN ALSO BE PRESENT ON THE SILOXANE GROUPS. THESE COMPOUNDS ARE PREPARED BY REACTING POLYSILOXANES CONTAINING METHYLHYDROGEN UNITS AND PHENYLHYDROGEN UNITS WITH HIGHER ALKENES AND HYDROXYARYL COMPOUNDS CONTAINING BOTH NUCLEAR SUBSTITUTED ALLYL RADICALS AND NUCLEAR SUBSTITUTED TERTIARY BUTYL RADICALS.
Inventors
Bibliographic Details
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Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:43
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/06; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C08G; C08G77/00; C08G77/04; C08G77/38; C09; C09K; C09K15/00; C09K15/04; C09K15/32; C09K15/328; C10; C10M; C10M169/00; C10M169/04; C10M3/00; C10M7/00; C10M2201/00; C10M2201/06; C10M2201/063; C10M2201/10; C10M2201/105; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2229/00; C10M2229/02; C10M2229/025; C10M2229/04; C10M2229/0405; C10M2229/041; C10M2229/0415; C10M2229/042; C10M2229/0425; C10M2229/043; C10M2229/0435; C10M2229/044; C10M2229/0445; C10M2229/045; C10M2229/0455; C10M2229/046; C10M2229/0465; C10M2229/047; C10M2229/0475; C10M2229/048; C10M2229/0485; C10M2229/05; C10M2229/0505; C10M2229/051; C10M2229/0515; C10M2229/052; C10M2229/0525; C10M2229/053; C10M2229/0535; C10M2229/054; C10M2229/0545; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
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Surcharge Period Until
Estimated Fee
Status
3.5 Years (Year 4) 1974-05-17
1974-11-16 1975-05-18
$2000.00
Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-17
1978-11-16 1979-05-18
$3760.00
Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-17
1982-11-16 1983-05-18
$7700.00
Window Closed / Lapsed