US4093790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphenylene resins
Assignee: Labofina SA
•
Filing: 1972-01-05
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Granted: 1978-06-06
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Expires: 1992-01-05
Abstract
Abstract A high molecular weight polymer characterized by chains of benzene rings comprising alternatively di-substituted rings and tri-substituted rings, wherein the di-substituted rings comprise a major part of 1,3 (meta)- and a minor part of 1,4 (para)- di-substituted rings, and the tri-substituted rings are members of the group consisting of 1,3,5-, 1,2,4- and mixtures of 1,3,5- and 1,2,4- tri-substituted rings, these tri-substituted rings being substituted by 1 to 3 chains of benzene rings, each of the other substituents being a benzene ring which is unsubstituted or is substituted by a radical of the group consisting of alkyl, aryl and halogen radicals.
Inventors
- 👤 William J. I. Bracke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:08
CPC Classifications
C; C08; C08F; C08F38/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A normally solid, aromatic hydrocarbon soluble polyphenylene polymer prepared by polymerizing a mixture consisting essentially of phenyl acetylene and meta-diethynyl benzene, the mixture containing between 50 and 60 mol percent of meta-diethynyl benzene and 40-50 mol percent of phenyl acetylene, with a catalyst solution prepared from Al, AlCl 3 , chlorobenzene and TiCl 4 , in an inert solvent and under inert atmosphere at a temperature of from - 80° to 150° C.
Claim 2
Dependent Claim
73 words
A normally solid, aromatic hydrocarbon soluble polyphenylene polymer prepared by polymerizing a mixture consisting essentially of phenyl acetylene and meta-diethynyl benzene, the mixture containing between 50 and 60 mol percent of meta-diethynyl benzene and 40-50 mol percent of phenyl acetylene, with a catalyst solution prepared from Al, AlCl 3 , chlorobenzene and TiCl 4 , in an inert solvent and under inert atmosphere at a temperature of from - 80° to 150° C.
References Cited (Backward Citations)
US3066119A
Cited
SU129330A1
Cited
SU136552A1
Cited
US3316233A
Cited
US3313787A
Cited
US3578626A
Cited
DE2043494A1
Cited
US3756982A
Cited
US3705131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |