US4808332A
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Acrylic copolymers exhibiting nonlinear optical response
Assignee: Hoechst Celanese Chemical Co
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Filing: 1987-10-09
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Granted: 1989-02-28
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Expires: 2007-10-09
Abstract
Abstract This invention provides novel isotropic acrylic copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch and light modulator devices. An invention isotropic acrylic copolymer is illustrated by the following structure: ##STR1##
Inventors
- 👤 Ronald N. DeMartino
- 👤 Hyun-Nam Yoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR9## where m and m 1 are integers which total at least 10, and the m monomer comprises between about 10-90 mole percent of the total m+m 1 monomer units; R is hydrogen or C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; R 2 is hydrogen or a C 1 -C 4 alkyl substituent; and Z is a nitro or cyano substituent.
Claim 2
Dependent Claim
100 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR9## where m and m 1 are integers which total at least 10, and the m monomer comprises between about 10-90 mole percent of the total m+m 1 monomer units; R is hydrogen or C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; R 2 is hydrogen or a C 1 -C 4 alkyl substituent; and Z is a nitro or cyano substituent.
Claim 3
Dependent Claim
21 words
An acrylic copolymer in accordance with claim 1 which has a weight average molecular weight in the range between about 5000-200,000.
Claim 4
Dependent Claim
21 words
An acrylic copolymer in accordance with claim 1 which has a glass transition temperature in the range between about 40°-150° C.
Claim 5
Dependent Claim
13 words
A transparent nonlinear optical medium comprising a copolymer in accordance with claim 1.
Claim 6
Dependent Claim
24 words
A transparent nonlinear optical medium in accordance with claim 4 which is characterized by an external field-induced orientation of aligned m monomer side chains.
Claim 7
Dependent Claim
82 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR10## where m and m 1 are integers which total at least 20, and the m monomer comprises between about 20-80 mole percent of the total m+m 1 monomer units; R' is hydrogen or a methyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; and R 2 is hydrogen or a C 1 -C 4 alkyl substituent.
Claim 8
Dependent Claim
82 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR10## where m and m 1 are integers which total at least 20, and the m monomer comprises between about 20-80 mole percent of the total m+m 1 monomer units; R' is hydrogen or a methyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; and R 2 is hydrogen or a C 1 -C 4 alkyl substituent.
Claim 9
Dependent Claim
14 words
A transparent nonlinear optical medium comprising an acrylic copolymer in accordance with claim 6.
Claim 10
Dependent Claim
24 words
A transparent nonlinear optical medium in accordance with claim 7 which is characterized by an external field-induced orientation of aligned m monomer side chains.
Claim 11
Dependent Claim
82 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR11## where m and m 1 are integers which total at least 20, and the m monomer comprises between about 20-80 mole percent of the total m+m 1 monomer units; R' is hydrogen or a methyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; and R 2 is hydrogen or a C 1 -C 4 alkyl substituent.
Claim 12
Dependent Claim
82 words
An isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR11## where m and m 1 are integers which total at least 20, and the m monomer comprises between about 20-80 mole percent of the total m+m 1 monomer units; R' is hydrogen or a methyl substituent; n is an integer between about 1-12; R 1 is a C 1 -C 6 alkyl substituent; and R 2 is hydrogen or a C 1 -C 4 alkyl substituent.
Claim 13
Dependent Claim
14 words
A transparent nonlinear optical medium comprising an acrylic copolymer in accordance with claim 9.
Claim 14
Dependent Claim
24 words
A transparent nonlinear optical medium in accordance with claim 10 which is characterized by an external field-induced orientation of aligned m monomer side chains.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 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 |