US5231140A
Expired / Lapsed
US
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Preparation of polymers with side groups with nlo activity, and the use thereof
Assignee: BASF SE
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Filing: 1992-05-22
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Granted: 1993-07-27
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Expires: 2012-05-22
Abstract
Abstract The invention relates to a process for the preparation of (meth)acrylate polymers with side-chain, non-linear optical chromophores and molecular weights of from 5000 to 5000000, which comprises reacting polymers of (meth)acryloyl chloride in solution with D-ω-hydroxyalkyl chromophores of the formula (I) or the alcoholates thereof ##STR1## where D is an electron donor, A is an electron acceptor, X is CH and/or N, and m is from 2 to 11. The polymers can be used in optical components.
Inventors
- 👤 Heike Kilburg
- 👤 Karl-Heinz Etzbach
- 👤 Karin H. Beck
- 👤 Peter Strohriegl
- 👤 Harry Mueller
- 👤 Oskar Nuyken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:38
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/04; C08F20/06; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; C08F8/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
171 words
A process for the preparation of (meth)acrylate polymers with side-chain, non-linear optical chromophores and molecular weights M n of from 5000 to 5000000, which comprises reacting polymers of (meth)acryloyl chloride in solution wint D-ω-hydrozyalkyl chromophores of the formula (I) or the alcholates thereof ##STR15## where D is an electron donor, A is an electron acceptor, R 2 and R 3 can be identical or different and are H, alkyl of 1 to 6 carbons, cycloalkyl of 5 or 6 carbons, or R 3 and R 4 are CN, NO 2 or CHO, or R 1 and R 2 and R 4 , together form a fused-on ring, X is CH and/or N, m is an integer from 2 to 11, and wherein the reaction of the alcohols of the formula (I) or of the alcoholates thereof with the (meth)acryloyl chloride polymers is carried out in such a way that chloroformyl groups are still present in the polymer after the reaction and can subsequently be hydrolyzed to carboxyl groups or otherwise functionalized.
Claim 2
Dependent Claim
171 words
A process for the preparation of (meth)acrylate polymers with side-chain, non-linear optical chromophores and molecular weights M n of from 5000 to 5000000, which comprises reacting polymers of (meth)acryloyl chloride in solution wint D-ω-hydrozyalkyl chromophores of the formula (I) or the alcholates thereof ##STR15## where D is an electron donor, A is an electron acceptor, R 2 and R 3 can be identical or different and are H, alkyl of 1 to 6 carbons, cycloalkyl of 5 or 6 carbons, or R 3 and R 4 are CN, NO 2 or CHO, or R 1 and R 2 and R 4 , together form a fused-on ring, X is CH and/or N, m is an integer from 2 to 11, and wherein the reaction of the alcohols of the formula (I) or of the alcoholates thereof with the (meth)acryloyl chloride polymers is carried out in such a way that chloroformyl groups are still present in the polymer after the reaction and can subsequently be hydrolyzed to carboxyl groups or otherwise functionalized.
Claim 3
Dependent Claim
34 words
The process of claim 1, wherein the non-linear optical D-ω-hydroxyalkyl cromophores of the formula (I), or the alcoholates thereof, which are employed are thsoe in which m is an integer from 2 to 8.
Claim 4
Dependent Claim
27 words
The process of claim 1, wherein the alkali metal alcoholates of the non-linear optical D-ω-hydroxyalkyl chromophores of the formula (I) are employed as alcoholates in the reaction.
Claim 5
Dependent Claim
18 words
The process of claim 3, wherein the lithium alcoholates are employed as alkali metal alcoholates in the reaction.
Claim 6
Dependent Claim
23 words
The process of claim 1, wherein non-linear optical D-ω-hydroxyalkyl chromophores of the formula (I) or the alcoholates thereof are reacted with polyacryloyl chloride.
Claim 7
Dependent Claim
23 words
The process of claim 1, wherein non-linear optical D-ω-hydroxyalkyl chromophores of the formula (I) or the alcoholates thereof are reacted with polymethacryloyl chloride.
Claim 8
Dependent Claim
25 words
The process of claim 1, wherein the chloroformyl groups still present in the polymer after the reaction are reacted with crosslinkable alcohols or crosslinkable alcoholates.
Claim 9
Dependent Claim
31 words
The process of claim 7, wherein the crosslinkable alcohols or crosslinkable alcoholates are those which contain the following groups bonded to the oxygen: ##STR16## where n is from 1 to 12.
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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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |