US4801670A
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Acrylic copolymers exhibiting nonlinear optical response
Assignee: Hoechst Celanese Chemical Co
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Filing: 1987-11-16
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Granted: 1989-01-31
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Expires: 2007-11-16
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
2026-10-30 21:31
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/34; C08F220/36
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
82 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 a C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; R 1 is a C 1 -C 6 alkyl substituent; and Z is a nitro or cyano substituent.
Claim 2
Dependent Claim
82 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 a C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; R 1 is a C 1 -C 6 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°-180° 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
63 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; and R 1 is a C 1 -C 6 alkyl substituent.
Claim 8
Dependent Claim
63 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; and R 1 is a C 1 -C 6 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
63 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; and R 1 is a C 1 -C 6 alkyl substituent.
Claim 12
Dependent Claim
63 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; and R 1 is a C 1 -C 6 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.
Claim 15
Dependent Claim
102 words
An optical light switch or light modulator device with a polymeric nonlinear optical component comprising a transparent solid medium of an isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR12## 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 a C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; R 1 is a C 1 -C 6 alkyl substituent; and Z is a nitro or cyano substituent.
Claim 16
Dependent Claim
102 words
An optical light switch or light modulator device with a polymeric nonlinear optical component comprising a transparent solid medium of an isotropic acrylic copolymer which is characterized by recurring monomeric units corresponding to the formula: ##STR12## 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 a C 1 -C 4 alkyl, C 6 -C 10 aryl, halo or haloalkyl substituent; R 1 is a C 1 -C 6 alkyl substituent; and Z is a nitro or cyano substituent.
Claim 17
Dependent Claim
19 words
An optical device in accordance with claim 12 wherein the polymer medium exhibits second order nonlinear optical susceptibility χ.sup.(2).
Claim 18
Dependent Claim
19 words
An optical device in accordance with claim 12 wherein the polymer medium exhibits third order nonlinear optical susceptibility χ.sup.(3).
Claim 19
Dependent Claim
26 words
An optical device in accordance with claim 12 wherein the polymer medium has a stable orientation of an external field-induced alignment of m monomer side chains.
Claim 20
Dependent Claim
24 words
An optical device in accordance with claim 12 wherein the polymeric component is an acrylic copolymer corresponding to the formula represented in claim 6.
Claim 21
Dependent Claim
24 words
An optical device in accordance with claim 12 wehrein the polymeric component is an acrylic copolymer corresponding to the formula represented in claim 9.
Claim 22
Dependent Claim
25 words
An optical device in accordance with claim 12 wherein the polymeric nonlinear optical component exhibits less than about 5 percent scattering of transmitted incident light.
References Cited (Backward Citations)
No citation records indexed.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |