| 摘要 |
1. Photosensitive polycondensation product comprising recurring units of the formulae A1 and A2 see diagramm : EP0135616,P9,F1 and see diagramm : EP0135616,P9,F2 which are connected to one another by divalent members R5 , where R1 and R2 are identical or different and denote alkyl groups having 1-2 carbon atoms, alkoxy groups having 1-4 carbon atoms, halogen atoms or dimethylamino groups, R3 denotes a hydrogen or chlorine atom, or a methyl or alkoxy group having 1-2 carbon atoms, R4 denotes a hydrogen atom, a methyl group or a chlorine atom, R5 denotes one of the groups -CH2 -, > CHCH3 and see diagramm : EP0135616,P9,F3 in which R is CH2 or C(CH3 )2 , M is the radical of an aromatic hydrocarbon, of a diaryl ether, of a diaryl sulphide, of a diaryl disulphide, of a diaryl sulphone, of a diarylamine, of a diaryl ketone or of a diaryl diketone, D is -CH2 - or -CH2 -O- CH2 -, b is zero or a number from 1 to 9, and T is a connecting member with the meaning of R, a hydrogen atom or one of the end groups 2-hydroxyprop-2-yl, hydroxymethyl, (C1 -C4 -alkoxy)-methyl, acetoxymethyl, chloromethyl and bromomethyl when D is -CH2 , and is a hydrogen atom when D is -CH2 -O-CH2 -, X is the anion of the diazonium salt, Y is -NH-, -SO2 - or -O-, and Z is -S-, -O- or -NHCO-, the total number of units A1 + A2 being on average 2 to 160 and the ratio between the units A1 : A2 being 0.125 - 8 : 1. |
