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Patent US4963633A successfully refreshed from Google Patents.
US4963633A
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Bisacrylate monomers and polymers exhibiting nonlinear optical response
Assignee: CNA Holdings LLC
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Filing: 1989-11-13
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Granted: 1990-10-16
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Expires: 2009-11-13
Abstract
Abstract This invention provides novel bisacrylate monomers and thermoset polymers which exhibit nonlinear optical response. The polymers have utility as a transparent nonlinear optical component in optical light switch and light modulator devices. An invention bisacrylate monomer is illustrated by the following structure: ##STR1##
Inventors
- 👤 Ronald N. DeMartino
- 👤 Anthony J. East
- 👤 Gordon W. Calundann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/49; C07C255/58; C07C219/00; C07C219/02; C07C219/04; C07C219/08; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A process for producing a nonlinear optical medium which comprises heating and forming a melt phase medium of a bisacrylate composition corresponding to the formula: ##STR7## where R is a C 1 -C 4 alkyl substituent, R 1 is a divalent C 2 -C 12 alkylene radical, m is an integer with a value of 0-2, n is an integer with a value of 0-1, and X is an electron-withdrawing substituent; subjecting the melt phase to an external field to induce an orientation of aligned molecules in the medium, and forming a solid phase of the molecularly oriented medium while maintaining the external field effect to freeze the molecular orientation in the formed solid phase.
Claim 2
Dependent Claim
115 words
A process for producing a nonlinear optical medium which comprises heating and forming a melt phase medium of a bisacrylate composition corresponding to the formula: ##STR7## where R is a C 1 -C 4 alkyl substituent, R 1 is a divalent C 2 -C 12 alkylene radical, m is an integer with a value of 0-2, n is an integer with a value of 0-1, and X is an electron-withdrawing substituent; subjecting the melt phase to an external field to induce an orientation of aligned molecules in the medium, and forming a solid phase of the molecularly oriented medium while maintaining the external field effect to freeze the molecular orientation in the formed solid phase.
Claim 3
Dependent Claim
19 words
A process in accordance with claim 1, wherein the solid phase is formed by cooling of the melt phase.
Claim 4
Dependent Claim
22 words
A process in accordance with claim 1 wherein polymerization of the bisacrylate occurs in the melt phase after molecular orientation is induced.
Claim 5
Dependent Claim
19 words
A process in accordance with claim 1 wherein polymerization of the bisacrylate occurs in the molecularly oriented solid phase.
Claim 6
Dependent Claim
13 words
A nonlinear optical medium produced in accordance with the process of claim 1.
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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |