US4452993A
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Anisotropic heat-curable acrylic-terminated monomers
Assignee: Celanese Corp
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Filing: 1982-05-24
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Granted: 1984-06-05
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Expires: 2002-05-24
Abstract
Abstract Novel heat-curable acrylic-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. The monomer may, for example, consist essentially of the reaction product of p-acryloyloxybenzoic acid and a difunctional aromatic moiety in a molar ratio of about 2:1.
Inventors
- 👤 Anthony B. Conciatori
- 👤 Eui W. Choe
- 👤 Gerald Farrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:48
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C69/84; C07C69/90; C09; C09K; C09K19/00; C09K19/04; C09K2019/0444; C09K2019/0448
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
109 words
Heat-curable acrylic-terminated monomers capable of forming an anisotropic melt phase of the formula: ##STR5## wherein Ar is a divalent radical comprising at least one aromatic ring, Ar 1 is a divalent radical selected from the group consisting of phenylene, naphthylene, biphenylene and mixtures thereof and R is selected from the group consisting of hydrogen and methyl, 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, substituted phenyl and mixtures thereof.
Claim 2
Dependent Claim
109 words
Heat-curable acrylic-terminated monomers capable of forming an anisotropic melt phase of the formula: ##STR5## wherein Ar is a divalent radical comprising at least one aromatic ring, Ar 1 is a divalent radical selected from the group consisting of phenylene, naphthylene, biphenylene and mixtures thereof and R is selected from the group consisting of hydrogen and methyl, 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, substituted 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 ##STR6##
Claim 4
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR7##
Claim 5
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR8##
Claim 6
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR9##
Claim 7
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR10##
Claim 8
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR11##
Claim 9
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR12##
Claim 10
Dependent Claim
13 words
A heat-curable monomer of claim 1 wherein R is hydrogen in each instance.
Claim 11
Dependent Claim
10 words
A heat-curable monomer of claim 1 wherein Ar is ##STR13##
Claim 12
Dependent Claim
1 words
Hydroquinone-bis-acryloyloxybenzoate.
Claim 13
Dependent Claim
1 words
Hydroquinone-bis-acryloyloxybenzoate.
Claim 14
Dependent Claim
1 words
2,6-dihydroxynapthalene-bis-acryloyloxybenzoate.
Claim 15
Dependent Claim
1 words
2,6-dihydroxynapthalene-bis-acryloyloxybenzoate.
Claim 16
Dependent Claim
1 words
4,4'-biphenol-bis-acryloyloxybenzoate.
Claim 17
Dependent Claim
1 words
4,4'-biphenol-bis-acryloyloxybenzoate.
Claim 18
Dependent Claim
1 words
Chlorohydroquinone-bis-acryloyloxybenzoate.
Claim 19
Dependent Claim
1 words
Chlorohydroquinone-bis-acryloyloxybenzoate.
Claim 20
Dependent Claim
1 words
4,4'-oxybiphenol-bis-acryloyloxybenzoate.
Claim 21
Dependent Claim
1 words
4,4'-oxybiphenol-bis-acryloyloxybenzoate.
Claim 22
Dependent Claim
1 words
Methylhydroquinone-bis-acryloyloxybenzoate.
Claim 23
Dependent Claim
1 words
Methylhydroquinone-bis-acryloyloxybenzoate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |