US3919344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silanol-free resins
Assignee: General Electric Co
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Filing: 1974-05-02
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Granted: 1975-11-11
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Expires: 1994-05-02
Abstract
Abstract A silicone resin comprising chemically combined RSiO3/2 units and R2SiO units where the R to Si ratio may vary from 1.0 to 1.9 and the ratio of RSiO3/2 units to R2SiO units may vary from 1:2.5 to 1:5.0 and containing less than 0.5 weight per cent of silanol groups and preferably being substantially free of silanol groups where R is a monovalent hydrocarbon radical. Such silanol-free resins are useful plasticizers for painting compositions and molding compositions having therein silicone resins as the base material.
Inventors
- 👤 Duane F Merrill
- 👤 Jr Richard C Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:32
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C09; C09D; C09D183/00; C09D183/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
A PROCESS FOR MAKING A SILICONE PAINT HAVING ENHANCED RESISTANCE TO THERMAL SHOCK WHEREIN SAID SILICONE PAINT IS COMPOSED OF A SILICONE POLYESTER RESIN, A SOLVENT, AND A PIGMENT COMPRISING INCORPORATING IN SAID SILICONE PAINT 10 O 30 PERCENT BY WEIGHT OF THE TOTAL RESIN CONTENT IN THE PAINT, A PLASTICIZING SILICONE RESIN WHICH IS A RANDOM COPOLYMER AND HAVING A SILANOL CONTENT OF LESS HAN 0.5 WEIGHT PERCENT WHERE THE R TO SI RATIO MAY VARY FROM 1.1:1 TO 1.5:1 AND COMPOSED OF CHEMICALLY COMBINED RSIO3/2 UNITS AND R2SIO, AND THE RATIO OF THE RSIO3/2 UNITS TO R2SIO UNITS MAY VARY FROM 1:2.5 TO 1:5.0 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF 1 TO 8 CARBON ATOMS, ALKENYL RADICALS OF 2 TO 8 CABON ATOMS, CYCLOALKYL RADICALS OF 5 TO 7 CARBON ATOMS, MONONUCLEAR ARYL RADICALS, MONONUCLEAR ARYL LOWER ALKYL RADICALS WHERE THE ALKYL RADICAL HAS 1 TO 6 CARBON ATOMS, AND HALOGENATED DERIVATIVES OF THE FOREGOING RADICALS.
Claim 2
Dependent Claim
164 words
A PROCESS FOR MAKING A SILICONE PAINT HAVING ENHANCED RESISTANCE TO THERMAL SHOCK WHEREIN SAID SILICONE PAINT IS COMPOSED OF A SILICONE POLYESTER RESIN, A SOLVENT, AND A PIGMENT COMPRISING INCORPORATING IN SAID SILICONE PAINT 10 O 30 PERCENT BY WEIGHT OF THE TOTAL RESIN CONTENT IN THE PAINT, A PLASTICIZING SILICONE RESIN WHICH IS A RANDOM COPOLYMER AND HAVING A SILANOL CONTENT OF LESS HAN 0.5 WEIGHT PERCENT WHERE THE R TO SI RATIO MAY VARY FROM 1.1:1 TO 1.5:1 AND COMPOSED OF CHEMICALLY COMBINED RSIO3/2 UNITS AND R2SIO, AND THE RATIO OF THE RSIO3/2 UNITS TO R2SIO UNITS MAY VARY FROM 1:2.5 TO 1:5.0 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF 1 TO 8 CARBON ATOMS, ALKENYL RADICALS OF 2 TO 8 CABON ATOMS, CYCLOALKYL RADICALS OF 5 TO 7 CARBON ATOMS, MONONUCLEAR ARYL RADICALS, MONONUCLEAR ARYL LOWER ALKYL RADICALS WHERE THE ALKYL RADICAL HAS 1 TO 6 CARBON ATOMS, AND HALOGENATED DERIVATIVES OF THE FOREGOING RADICALS.
Claim 3
Dependent Claim
14 words
The process of claim 1 where the plasticizing silicone resin is substantially silanol free.
Claim 4
Dependent Claim
13 words
The process of claim 1 where R is selected from methyl and phenyl.
References Cited (Backward Citations)
US3328481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |