Linear and cyclic polymers or oligomers having a photoreactive ethene group

Claim 1

A polymer of formula I ##STR8## wherein M a , M b , M c are monomer units for homo- or copolymers; x, y, z are mole fractions of the copolymers, whereby in each case 0<X≦1; 0≦y≦1 and 0≦z<1; S a , S b are independently of one another, methylene, 1,2-ethylene, 1,3-propylene, 1,4-butylene, 1,5-pentylene, 1,6-hexylene, 1,2-propylene, 1,3-butylene, cyclopentane-1,2-diyl, cyclopentane-1,3-diyl, cyclohexane-1,3-diyl, cyclohexane-1,4-diyl, piperidine-1,4-diyl, piperizine-1,4-diyl, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, ethyleneoxy, ethyleneoxycarbonyl, ethylenecarboxy, CONH-- or --CONR' in which R 1 is lower alkyl; Z a , Z b each independently are formula II ##STR9## wherein ring A 1 is 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and nitro, or pyridine-2,5-yl, pyrimidine-2-5-yl, 2,5-thiophenediyl, 2,5-furanylene, 1,4- or 2,6-naphthylene, in which a CH group can be replaced by nitrogen; ring A,A 2 each individually are 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano, and nitro, pyridine-2-5-yl, pyrimidine-2,5-yl, or 2,5-thiophenediyl, 2,5-furanylene, trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-yl or 1,4-piperidyl; A 3 is --COO--, --CONH--, --CO--E--, 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and nitro, or pyridine-2,5-yl, pyrimidine-2-5-yl, 2,5-thiophenediyl, 2,5-furanylene, 1,4- or 2,6-naphthylene, in which a CH group can be replaced by nitrogen; E is 1,4-phenylene, which is unsubstituted or substituted with at least one of halogen, cyano and nitro, or pyridine-2,5-yl, pyrimidine-2,5-yl, 2,5-thiophenediyl, 2,5-furanylene, 1,4- or 2,6-naphthylene, in which a CH group can be replaced by nitrogen; Z,Z 1 each independently are a single covalent bond, --CH 2 CH 2 --, COO--, --OOC--, --OCH 2 --, CH 2 O--, --C.tbd.C--, --(CH 2 ) 4 , --O(CH 2 ) 3 --, --(CH 2 ) 3 O-- or the trans form of --OCH 2 CH═CH--, --CH═CHCH 2 O--, --(CH 2 ) 2 CH═CH-- or --CH═CH(CH 2 ) 2 --; R 1 is hydrogen, halogen, cyano, nitro, NCS, alkyl with 1 to 12 carbon atoms, which is unsubstituted or substituted with fluorine and in which 1 or 2 non-adjacent --CH 2 -- groups can be replaced by oxygen, --COO--, --OOC--, --CO-- and in which a --CH 2 CH 2 -- group can be replaced by --CH═CH--; n,p each independently are 0 or 1; X,Y each independently are hydrogen, halogen, cyano, alkyl with 1 to 12 carbon atoms which is unsubstituted or substituted with fluorine and in which 1 or 2 non-adjacent --CH 2 -- groups can be replaced by oxygen, --COO--, --OOC--, --CO-- and/or --CH═CH--; with the proviso that A 3 is different from --COO--, when simultaneously n and p each are 0, A 1 is phenyl, R 1 is hydrogen or methoxy and S a and, respectively S b are a single bond; n is from 4-100 000 and m is 0 or 1.