US5384378A
Expired / Lapsed
US
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Copolymers with non-linear optical properties and the use thereof
Assignee: BASF SE
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Filing: 1993-09-21
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Granted: 1995-01-24
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Expires: 2013-09-21
Abstract
Abstract Copolymers with non-linear optical properties, which contain or are composed of repeating units of the formula (I) ##STR1## where D is an electron donor, A is an electron acceptor, R 1 , R 2 , R 3 and R 4 can be the same as or different from one another, and are each H, alkyl, cycloalkyl, or R 3 and R 4 are each CN, NO 2 or CHO, or R 1 forms with R 2 , or R 3 forms with R 4 , a fused-on ring, X is CH and/or N, m is an integer from 2 to 11, and R is hydrogen or methyl, and repeating units of at least one of the formulae (II), (III) and (IV) ##STR2## are suitable for the production of optical components.
Inventors
- 👤 Karl-Heinz Etzbach
- 👤 Stefan Beckmann
- 👤 Oskar Nuyken
- 👤 Peter Strohriegl
- 👤 Harry Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:28
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: 9
Claim 1
Independent Claim
130 words
A copolymer with non-linear optical properties, comprising repeating units of the formula (I) ##STR10## where D is an electron donor, A is an electron acceptor, R 1 , R 2 , R 3 and R 4 can be the same as or different from one another, and are each H, alkyl of 1-6 carbons, cycloalkyl of 5 or 6 carbons, or R 3 and R 4 are each CN, NO 2 , SO 3 CH 3 or CHO, or R 1 forms with R 2 , or R 3 forms with R 4 , a fused-on ring, X is CH and/or N, m is an integer from 2 to 11, and R is hydrogen or methyl, and repeating units of at least one of the formulae (III) and (IV) ##STR11##
Claim 2
Dependent Claim
130 words
A copolymer with non-linear optical properties, comprising repeating units of the formula (I) ##STR10## where D is an electron donor, A is an electron acceptor, R 1 , R 2 , R 3 and R 4 can be the same as or different from one another, and are each H, alkyl of 1-6 carbons, cycloalkyl of 5 or 6 carbons, or R 3 and R 4 are each CN, NO 2 , SO 3 CH 3 or CHO, or R 1 forms with R 2 , or R 3 forms with R 4 , a fused-on ring, X is CH and/or N, m is an integer from 2 to 11, and R is hydrogen or methyl, and repeating units of at least one of the formulae (III) and (IV) ##STR11##
Claim 3
Dependent Claim
73 words
A copolymer as claimed in claim 1, wherein in formula (I) D is NR 5 or O --X═X-- is --N═N--, --N═CH--, --CH═N-- or --CH═CH-- A is H, NO 2 , CN, CHO, SO 3 CH 3 , ##STR12## R 5 is C 1 -C 6 -alkyl, C 5 -C 7 -cycloalkyl, phenyl, benzyl, tolyl or a crosslinkable group and R 6 is H, NO 2 , CN, SO 3 CH 3 or CHO.
Claim 4
Dependent Claim
41 words
A copolymer as claimed in claim 2, wherein the crosslinkable group R 5 is vinyl, allyl, methallyl, methacryl, acryl, --(CH 2 ) n --O--CO--CH═CH 2 , --(CH 2 ) n --O--CO--C(CH 3 )═CH 2 with n-1 to 8, oxiranyl or thiiranyl.
Claim 5
Dependent Claim
40 words
A copolymer as claimed in claim 3, which, besides the repeating units of the formulae (I), (III) or (IV), contains at least one other (meth)acrylate unit which is different from the formulae (I) to (IV) and may contain crosslinkable groups.
Claim 6
Dependent Claim
40 words
A copolymer as claimed in claim 2, which, besides the repeating units of the formulae (I), (III) or (IV), contains at least one other (meth)acrylate unit which is different from the formulae (I) to (IV) and may contain crosslinkable groups.
Claim 7
Dependent Claim
14 words
The copolymer of claim 2, wherein R 5 is C 1 -C 6 -alkenyl.
Claim 8
Dependent Claim
40 words
A copolymer as claimed in claim 1, which, besides the repeating units of the formulae (I), (III) or (IV), contains at least one other (meth)acrylate unit which is different from the formulae (I) to (IV) and may contain crosslinkable groups.
Claim 9
Dependent Claim
33 words
A copolymer as claimed in claim 1, which is composed of 5-80 mol % of units of the formula (I) and of 20-95 mol % of units of the formulae (III) or (Iv).
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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) | 1998-01-23 | 1998-07-25 | 1999-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-23 | 2002-07-25 | 2003-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-23 | 2006-07-25 | 2007-01-24 | $7700.00 | Window Closed / Lapsed |