US4440945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anisotropic heat-curable acetylene-terminated monomers and thermoset resins produced therefrom
Assignee: Celanese Corp
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Filing: 1982-07-19
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Granted: 1984-04-03
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Expires: 2002-07-19
Abstract
Abstract Novel heat-curable acetylene-terminated monomers are provided which exhibit an optically anisotropic melt phase at a temperature which enables it to undergo melt processing in the formation of molded articles, etc. The monomers are capable of being heat-cured at temperatures in excess of the melt processing temperatures to produce a thermoset self-reinforced composite.
Inventors
- 👤 Anthony B. Conciatori
- 👤 Eui W. Choe
- 👤 Gerald Farrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:43
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C69/84; C07C69/86
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
Heat-curable acetylene-terminated monomers capable of forming an anisotropic melt phase of the formula: ##STR4## wherein Ar is a divalent radical comprising at least one aromatic ring and Ar 1 is a divalent radical selected from the group consisting of phenylene, naphthylene, biphenylene and mixtures thereof with at least some of the hydrogen atoms present upon the aromatic rings in said divalent radicals optionally being replaced by substitution selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, halogen, phenyl and mixtures thereof.
Claim 2
Dependent Claim
96 words
Heat-curable acetylene-terminated monomers capable of forming an anisotropic melt phase of the formula: ##STR4## wherein Ar is a divalent radical comprising at least one aromatic ring and Ar 1 is a divalent radical selected from the group consisting of phenylene, naphthylene, biphenylene and mixtures thereof with at least some of the hydrogen atoms present upon the aromatic rings in said divalent radicals optionally being replaced by substitution selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, halogen, phenyl and mixtures thereof.
Claim 3
Dependent Claim
16 words
A heat-curable monomer of claim 1 wherein Ar is selected from the group consisting of ##STR5##
Claim 4
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR6##
Claim 5
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR7##
Claim 6
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR8##
Claim 7
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR9##
Claim 8
Dependent Claim
11 words
A heat curable monomer of claim 1 wherein Ar is ##STR10##
Claim 9
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR11##
Claim 10
Dependent Claim
11 words
A heat-curable monomer of claim 1 wherein Ar 1 is ##STR12##
Claim 11
Dependent Claim
1 words
Bis(p-carbepropynoxyphenyl)terephthalate.
Claim 12
Dependent Claim
1 words
Bis(p-carbepropynoxyphenyl)terephthalate.
Claim 13
Dependent Claim
10 words
A thermoset resin comprised of a monomer of claim 1.
Claim 14
Dependent Claim
10 words
A thermoset resin comprised of a monomer of claim 10.
References Cited (Backward Citations)
US4068082A
Cited
US4283551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |