EP0090282B1
Expired / Lapsed
EP
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Polymers having mesogen groups and colouring matter in the side chain
Assignee: BASF SE
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Filing: 1983-03-18
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Granted: 1986-02-05
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Expires: 2003-03-18
Abstract
No abstract record available.
Inventors
- 👤 Helmut Dr. Ringsdorf
- 👤 Michael Dr. Portugall
- 👤 Hans-Werner Schmidt
- 👤 Karl-Heinz Dr. Etzbach
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 15:12
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852; C08; C08F; C08F246/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A polymer containing mesogenic groups and dye radicals, wherein the polymer chain comprises a) one or more monomers possessing a nematogenic, a chiral or a smectogenic group, or a mixture of monomers possessing a nematogenic group with those possessing a chiral group, an b) one or more monomers possessing a radical of a pleochroic dye, and the nematogenic, the chiral and the smectogenic groups are bonded to the polymerizable group either directly or, like the dye radicals, via a spacer.
Claim 2
Dependent Claim
80 words
A polymer containing mesogenic groups and dye radicals, wherein the polymer chain comprises a) one or more monomers possessing a nematogenic, a chiral or a smectogenic group, or a mixture of monomers possessing a nematogenic group with those possessing a chiral group, an b) one or more monomers possessing a radical of a pleochroic dye, and the nematogenic, the chiral and the smectogenic groups are bonded to the polymerizable group either directly or, like the dye radicals, via a spacer.
Claim 3
Dependent Claim
65 words
A polvmer as claimed in claim 1. of the aeneral formula where R 1 is hydrogen or methyl, X is -0- or FIG36/10 is a spacer or a chemical bond, R 2 is a mesogenic group, R 3 is a dye radical and R 4 is hydrogen or unsubstituted or substituted C 1 -C 4 -alkyl, and the mesogenic group may also possess dye properties.
Claim 4
Dependent Claim
35 words
A polymer as claimed in claim 1 or 2, wherein R is a chemical bond or linear or branched C 2 -C 12 -alkylene which may or may not be interrupted by -O-, -S- or
Claim 5
Dependent Claim
70 words
A polymer as claimed in claim 1 or 2, wherein R is -(CE 2 ) 2 , -(CH 2 ) 3 , -(CE 2 ) 4 , -(CE 2 ) 5 , -(CE 2 ) 6 , -(CE 2 ) 8 , -(CE 2 ) 10 , -(CE 2 ) 12 , -(CE 2 ) 2 O-(CE 2 ) 2 , -(CE 2 ) 2 S-(CH 2 ) 2 ,
Claim 6
Dependent Claim
91 words
A polymer as claimed in claim 1, 2, 3 or 4, wherein R 2 is a radical of the formula or where Y is -D-, or -S-, Z is a chemical bond, -N=CH- or -CH=N-, R 5 is hydrogen, C 1 -C 12 -alkyl, C 5 -C 7 -cycloalkyl, C 1 -C 12 -alkoxy, C 1 -C 12 -alkoxycarbonyl, C 2 -C 12 alkanoyloxy, fluorine, chlorine, bromine, cyano or nitro, and R 6 is hydrogen, C 1 -C 12 -alkyl, C 1 -C 12 -alkoxy or C 1 -C 12 -alkoxycarbonyl.
Claim 7
Dependent Claim
50 words
A polymer as claimed in claim 1, 2, 3, 4 or 5, wherein R is the radical of a pleochroic dye selected from the group consisting of the anthraquinone, the stilbene, the monoazo, the bisazo and the trisazo dyes, and the dye radical is bonded to the spacer R via
Claim 8
Dependent Claim
29 words
A polymer as claimed in claims 1 to 6, wherein the polymer contains from 0 . 1 to 40 % by weight, based on the polymer, of dye radicals.
Claim 9
Dependent Claim
15 words
The use of a polymer as claimed in claims 1 to 7 for electrooptical displays.
References Cited (Backward Citations)
No citation records indexed.
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