Patent US4358576A successfully refreshed from Google Patents.
US4358576A
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Organometallic polymer and process for production thereof
Assignee: Krosaki Harima Corp
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Filing: 1981-04-15
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Granted: 1982-11-09
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Expires: 2001-04-15
Abstract
Abstract An organometallic polymer of which the main-chain skeleton consists of a Si-CH 2 bond and a V-O bond and which partly contains a vanadiosiloxane bond, the ratio of the number of silicon atoms to that of vanadium atoms being in the range of from 3:1 to 1000:1, the side-chain group directly bonded to the silicon atom being selected from the group consisting of hydrogen, methyl, ethyl and phenyl, and the vanadium atom being bonded to the silicon atom through an oxygen atom with substantially no side-chain organic group present which is directly bonded to the vanadium atom.
Inventors
- 👤 Seishi Yajima
- 👤 Kiyohito Okamura
- 👤 Toetsu Shishido
- 👤 Kazushige Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
C; C08; C08G; C08G79/00; C08G77/00; C08G77/48; C08G77/58; C08G77/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
An organometallic polymer of which the main-chain skeleton consists of a Si-CH 2 bond and a V-O bond and which partly contains a vanadiosiloxane bond, the ratio of the number of silicon atoms to that of vanadium atoms being in the range of from 3:1 to 1000:1, the side-chain group directly bonded to the silicon atom being selected from the group consisting of hydrogen, methyl, ethyl and phenyl, and the vanadium atom being bonded to the silicon atom through an oxygen atom with substantially no side-chain organic group present which is directly bonded to the vanadium atom.
Claim 2
Dependent Claim
97 words
An organometallic polymer of which the main-chain skeleton consists of a Si-CH 2 bond and a V-O bond and which partly contains a vanadiosiloxane bond, the ratio of the number of silicon atoms to that of vanadium atoms being in the range of from 3:1 to 1000:1, the side-chain group directly bonded to the silicon atom being selected from the group consisting of hydrogen, methyl, ethyl and phenyl, and the vanadium atom being bonded to the silicon atom through an oxygen atom with substantially no side-chain organic group present which is directly bonded to the vanadium atom.
Claim 3
Dependent Claim
15 words
The organometallic polymer of claim 1 which melts when heated to 60° to 300° C.
Claim 4
Dependent Claim
12 words
The organometallic polymer of claim 1 which is soluble in organic solvents.
Claim 5
Dependent Claim
102 words
A process for producing the organometallic polymer of claim 1 which comprises mixing polyvanadiosiloxane or a vanadium complex in which a coordination atom adjacent to the vanadium atom is oxygen, with a polysilane of the formula ##STR8## wherein R 1 and R 2 are identical or different and each represents a member selected from the group consisting of hydrogen, methyl, ethyl and phenyl, provided that R 1 and R 2 are not both hydrogen; and n is a number of not more than 500, and reacting the mixture at a temperature of from 250° C. to 500° C. in a non-oxidizing atmosphere.
References Cited (Backward Citations)
US4052430A
Cited
US4220600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |