Patent ID: 11874563
Assignee: ROLIC TECHNOLOGIES AG
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A photo-orientable material comprising:
at least one curable compound that does not comprise any photo-alignable moieties; and
a photoaligning polymer material having a weight average molecular weight (Mw) of 100,000 to 300,000, and comprising repeating structural units of formula (II):, wherein
M1 is a repeating methacrylate monomer unit;
m, n are each independently 0 or 1;
S1 is a spacer unit, wherein, if m and n are 0, then the spacer unit is S2 and if at least one of m or n is 1, then the spacer unit is S3,
wherein S2, S3 are each substituted or unsubstituted, straight-chain or branched: —(CH2)r—, —(CH2)r—O—, —(CH2)r—O—(CH2)s—, —(CH2)r—O—(CH2)s—O—, —(CH2)r—CO—, —(CH2)r—CO—O—, —(CH2)r—O—CO—, —(CH2)r—NR2, —(CH2)r—CO—NR2—, —(CH2)r—NR2—CO—, —(CH2)r—NR2—CO—O— or —(CH2)r—NR2—CO—NR3—, which is optionally mono- or multiply-substituted with C1-C24-alkyl, or hydroxy, fluorine, chlorine, cyano, ether, ester, amino, amido; and wherein one or more —CH2— group(s) may be replaced by at least one linking group, alicyclic and/or aromatic group; in which when r and s are both present, r and s are each a whole number of 1 to 20, with the proviso that 3≤r+s≤24 for S2; and 6≤r+s≤24 for S3; and r is 6 and 10 to 24 when S3 is —(CH2)r—O—; and R2 and R3 each independently signify hydrogen or lower alkyl;
wherein the at least one linking group is selected from —CO—, —OO—O—, —O—CO—, —NR1—, —NR1—CO—, —CO—NR1—, —NR1—CO—O—, —O—CO—NR1—, —NR1—CO—NR1—, —CH═CH—, —C≡C—, —O—CO—O—, and —Si(CH3)2—O—Si(CH3)2—, wherein R1 represents a hydrogen atom or C1-6-alkyl, with the proviso that oxygen atoms of linking groups are not directly linked to each other; and
ring A is phenylene which is unsubstituted or substituted with fluorine, chlorine, cyano, alkyl or alkoxyl or pyridine-2,5-diyl; pyrimidine-2,5-diyl; 1,3-dioxane-2,5-diyl; cyclohexane-1,4-diyl; piperidine-1,4-diyl; or piperazine-1,4-diyl;
ring B is phenylene which is unsubstituted or substituted with fluorine, chlorine, cyano, alkyl or alkoxy; or pyridine-2,5-diyl; pyrimidine-2,5-diyl; 1,4- or 2,6-naphthylene;1,3-dioxane-2,5-diyl; or cyclohexane-1,4-diyl;
Y1, Y2 each independently signify a single covalent bond, —(CH2)r—, —O—, —CO—, —CO—O—, —O—OC—, —CF2O—, —OCF2—, —NR4—, —CO—NR4—, —R4N—CO—, —(CH2)u—O—, —O—(CH2)u—, —(CH2)u—NR4— or —NR4—(CH2)u—, in which
R4 signifies hydrogen or lower alkyl;
t signifies a whole number of 1 to 4;
u signifies a whole number of 1 to 3;
ring C is phenylene which is unsubstituted or substituted with fluorine, chlorine, cyano, alkyl or alkoxy; or pyrimidine-2,5-diyl; pyridine-2,5-diyl; 2,5-thiophenylene; 2,5-furanylene; or 1,4- or 2,6-naphthylene;
Z is —O— or —NR5—, in which R5 signifies hydrogen or lower alkyl, or a second group of formula D, in which
D is a 2,2,2-trifluoro-ethyl group.