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Patent US4242272A successfully refreshed from Google Patents.
US4242272A
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US
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Substituted phenethyldichlorosilanes and method for producing same
Assignee: JNC Corp
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Filing: 1978-06-15
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Granted: 1980-12-30
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Expires: 1998-06-15
Abstract
Abstract Substituted phenethyldichlorosilanes having a longer chain alkyl group and diphenethyldichlorosilane which are useful as compounds for improving heat-resisting property and other properties of silicone-oils, -rubbers and -varnishes which are used as electric insulating materials, lubricating oils, water-repelling agents, paintings, releasing agents, etc. are provided. A method for producing these compounds with a high yield without producing by-products is also provided.
Inventors
- 👤 Isao Koga
- 👤 Yohji Terui
- 👤 Masuhito Ohgushi
- 👤 Tohru Kitahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:53
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
A substituted phenethyldichlorosilane having the general formula ##STR4## wherein R 3 is an alkyl group having 3-20 carbon atoms or phenethyl group.
Claim 2
Dependent Claim
22 words
A substituted phenethyldichlorosilane having the general formula ##STR4## wherein R 3 is an alkyl group having 3-20 carbon atoms or phenethyl group.
Claim 3
Dependent Claim
18 words
A substituted phenethyldichlorosilane according to claim 1 wherein R 3 is an alkyl group having 3-20 carbon atoms.
Claim 4
Dependent Claim
15 words
A substituted phenethyldichlorosilane according to claim 1 wherein R 3 is phenethyl group of ##STR5##
References Cited (Backward Citations)
US3856837A
Cited
US3992427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |