US3673155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(organosilyl)hydrocarbon modified polyamides and methods for making them
Assignee: General Electric Co
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Filing: 1969-12-03
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Granted: 1972-06-27
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Expires: 1989-12-03
Abstract
Abstract Bis(aminoorganosilyl)hydrocarbons are employed in combination with organic diacids or organic dianhydrides to provide for the production of bis(organosilyl)hydrocarbon modified polyamides including polyamide acids. The bis(organosilyl)hydrocarbon modified polyamides also can contain chemically combined polydiorganosiloxane. The bis(organosilyl)hydrocarbon modified polyamides can be employed to make molding compounds, and polyamide and polyimide insulating films.
Inventors
- 👤 Fred F Holub
- 👤 Abe Berger
- 👤 Terry G Selin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:19
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/307; C; C08; C08G; C08G69/00; C08G69/42; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/106
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A polyamide consisting essentially of combined units of the formula, where W is a polyamide acid unit of the formula, R is selected from the group consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals, R'' and R'''' are selected from the group consisting of divalent hydrocarbon radicals and halogenated divalent hydrocarbon radicals, and R'''''' is selected from
Claim 2
Dependent Claim
22 words
A polyamide acid having recurring units of the formula, where W is a polyamide acid unit selected from the group consisting of,
Claim 3
Dependent Claim
11 words
A polyamide acid in accordance with claim 3, where W is
Claim 4
Dependent Claim
10 words
A polyamide in accordance with claim 3, where W is
Claim 5
Dependent Claim
11 words
A polyamide acid in accordance with claim 2, where W is
Claim 6
Dependent Claim
11 words
A polyamide acid in accordance with claim 3, where W is
References Cited (Backward Citations)
US3392144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |