Patent US4293960A successfully refreshed from Google Patents.
Patent US4808684A successfully refreshed from Google Patents.
US4808684A
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US
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Thermoset resin produced from anisotropic heat-curable acrylic terminated monomers
Assignee: CNA Holdings LLC
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Filing: 1986-10-23
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Granted: 1989-02-28
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Expires: 2006-10-23
Abstract
Abstract A novel heat-curable acrylic-terminated monomer is provided which exhibits an optically anisotropic melt phase at a temperature which enables it to undergo melt processing in the formation of molded articles, etc. Subsequent to melt processing articles prepared from the monomer are capable of being cured to produce a thermoset self-reinforced composite which is soft and flexible relative to prior art monomers. The monomer may, for example, consist essentially of the reaction product of a methacrylic-substituted phenol and terephthalic acid.
Inventors
- 👤 Robert W. Stackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:42
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C69/80; C07C69/82; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
156 words
A molded article formed from a heat-curable acrylic-terminated monomer capable of forming an anisotropic melt phase of the formula: ##STR16## 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, naphthalene, biphenylene and mixtures thereof, R is selected from the group consisting of an alkylene group having from one to four carbon atoms and an oxyalkylene group having from one to four carbon atoms, and R 1 is selected from the group consisting of hydrogen and methyl, wherein hydrogen atoms present on the aromatic rings in said divalent radicals Ar and Ar 1 may be replaced by substitution selected from the group consisting of an alkyl group having one to four carbon atoms, an alkoxy group having one to four atoms, halogen, phenyl, and mixtures thereof, which has been subjected to curing conditions for a time sufficient to accomplish substantial crosslinking.
Claim 2
Dependent Claim
156 words
A molded article formed from a heat-curable acrylic-terminated monomer capable of forming an anisotropic melt phase of the formula: ##STR16## 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, naphthalene, biphenylene and mixtures thereof, R is selected from the group consisting of an alkylene group having from one to four carbon atoms and an oxyalkylene group having from one to four carbon atoms, and R 1 is selected from the group consisting of hydrogen and methyl, wherein hydrogen atoms present on the aromatic rings in said divalent radicals Ar and Ar 1 may be replaced by substitution selected from the group consisting of an alkyl group having one to four carbon atoms, an alkoxy group having one to four atoms, halogen, phenyl, and mixtures thereof, which has been subjected to curing conditions for a time sufficient to accomplish substantial crosslinking.
Claim 3
Dependent Claim
17 words
A molded article according to claim 1, wherein Ar is selected from the group consisting of ##STR17##
Claim 4
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR18##
Claim 5
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR19##
Claim 6
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR20##
Claim 7
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR21##
Claim 8
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR22##
Claim 9
Dependent Claim
11 words
A molded article according to claim 1, wherein Ar is ##STR23##
Claim 10
Dependent Claim
12 words
A molded article according to claim 1, wherein Ar 1 is ##STR24##
Claim 11
Dependent Claim
11 words
A molded article according to claim 1, wherein R is ethylene.
Claim 12
Dependent Claim
11 words
A molded article according to claim 1, wherein R is oxyethylene.
Claim 13
Dependent Claim
12 words
A molded article according to claim 1, wherein R 1 is hydrogen.
Claim 14
Dependent Claim
12 words
A molded article according to claim 1, wherein R 1 is methyl.
Claim 15
Dependent Claim
15 words
A molded article according to claim 1, wherein said heat-curable acrylic terminated monomer is terephthaloyl-bis-methacryloyloxyethylenephenolate.
Claim 16
Dependent Claim
16 words
A molded article according to claim 1, wherein said heat curable acrylic terminated monomer is terephthaloyl-bis-methacryloylethylenephenolate.
Claim 17
Dependent Claim
16 words
A molded article according to claim 1, wherein said heat curable acrylic terminated monomer is terephthaloyl-bis-acryloyloxyethylenephenolate.
Claim 18
Dependent Claim
16 words
A molded article according to claim 1, wherein said heat curable acrylic terminated monomer is terephthaloyl-bis-acryloylethylenephenolate.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |