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1. 发明专利

JPH1077316A POLYMER HAVING OPTICALLY ADDRESSABLE SIDE CHAIN GROUP 失效
公开(公告)号：JPH1077316A
公开(公告)日：1998-03-24
申请号：JP22442397
申请日：1997-08-07
申请人： BAYER AG
发明人： BERNETH HORST DR , CLAUSSEN UWE DR , KOSTROMINE SERGUEI DR , NEIGL RALF DR , RUEBNER JOACHIM DR , RUHMANN RALF DR
IPC分类号： C09K3/00 , C07C245/08 , C07C255/50 , C07C255/54 , C07C255/65 , C07C311/37 , C08F20/10 , C08F20/52 , C08F246/00 , C09K19/38 , G11B7/24 , G11B7/25
摘要： PROBLEM TO BE SOLVED: To obtain a polymer having an optically addressable side chain group capable of inducing a high birefringence by irradiation, and suitable for the formation of a constituent for optically storing an existing information and as a constituent capable of optically switching. SOLUTION: This polymer having optically addressable side chain group has a main chain working as a trunk and side chains branching therefrom, forming covalent bonds therewith and represented by formula I and II [S and S are each 0, S or NR (R is H or a 1-4C alkyl); T and T are each (CH2 )n ; Q and Q are each a single bond, O, COO, OCO, etc.; A is a unit capable of absorbing the irradiated electromagnetic wave; M is a mesogenic unit having anisotropic shape; (n) is 2-12] and A has >=0.2 absorptivity ▵▵E obtained by six respective measurement of the formula A-Q H and AQ T S H such as a measurement about A-Q H or AQ T S H at an available lowest concentration in a solvent having an available lowest polarity and a measurement about a standard material at an available maximum concentration in the same solvent.

2. 发明专利

DE19631864A1 未知
公开(公告)号：DE19631864A1
公开(公告)日：1998-02-12
申请号：DE19631864
申请日：1996-08-07
申请人： BAYER AG
发明人： BERNETH HORST DR , CLAUSSEN UWE DR , KOSTROMINE SERGUEI DR , NEIGL RALF DR , RUEBNER JOACHIM DR , RUHMANN RALF DR
IPC分类号： C09K3/00 , C07C245/08 , C07C255/50 , C07C255/54 , C07C255/65 , C07C311/37 , C08F20/10 , C08F20/52 , C08F246/00 , C09K19/38 , G11B7/24 , G11B7/25 , C08L101/12 , C08L33/08 , C08L33/10
摘要： Photoaddressable polymers have a main chain as backbone and covalently attached lateral groups of formula -S -T -Q -A (I) and -S -T -Q -M (II), in which S , S = O, S or NR ; R = H or 1-4C alkyl; T , T = (CH2)n, optionally with in-chain -O-, -NR - or -OSi(R )2O- and/or optionally substituted with methyl or ethyl; Q , Q = direct single bond, O, COO, OCO, CONR , NR CO or NR ; or in which S T Q or S T Q = a piperazine-1,4-diyl group; A = a unit which is able to absorb electromagnetic radiation; M = a mesogenic, dimensionally anisotropic unit; n = 2-12. A has a linear absorption coefficient DELTA DELTA E of more than 0.2, measured on a compound of formula A-Q H or A-Q T S H from 6 separate measurements, in which two measurements are made in each case at the long-wave edge of the absorption curve with (A) the compound at the lowest possible concentration in a solvent of the lowest possible polarity, (B) the standard at the highest possible concentration in the same solvent and (C) compound and standard at concentrations as above in the same solvent. One measurement is taken at the wavelength (L) at which the absorption value of curve (C) is 0.8, and one at L + 50 nm; this gives the three absorption differences DELTA E = EL - EL+50 for the constituents (A)-(C) and hence the three values DELTA EA, DELTA EB and DELTA EC, from which is obtained the required difference DELTA DELTA E = DELTA EC - ( DELTA EB + DELTA EA). Also claimed are 6 compounds of formula A-Q -T -S -R, in which R = H, -OC-CH=CH2, -OC-CMe=CH2, -(CH2)n-OH, -CH2-CHOH-CH3 or -CHMe-CH2OH, and (meth)acrylates of the last three of these compounds.

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