Claims
- 1. A reactive liquid crystal compound of formula IIR′—G′—R″ II wherein at least one of terminal groups R′ and R″ is a reactive group exhibiting one reaction site selected from HOW′2C—, HSW′2C—, UW′N—, a carboxyl group, and O═C—N—, or is a polymerizable reactive group exhibiting two or more reactive sites selected from W′2C═CW′—, and wherein W′ is in each case independently, H or an alkyl group with 1-5 C atoms, and one of terminal groups R′ and R″ is optionally an alkyl group of tip 15 C atoms which is unsubstituted or substituted by one or more halogens and in which one or more CH2 groups is in each case independently replaced by —O—, —S—, —CO—, —OCO—, —CO—O—, or —O—CO—O— wherein O atoms are not directly linked to one another, G′ is a rod-like diyl group of the formula —S1—(A5—Z3)m—A6—S2— wherein S1 and S2 are each alkylene groups with 0-20 C atoms which can be linear or branched, it also being possible for one or more CH2 groups to be replaced, in each case independently from each other, by —O—, —CO—, —S— or —NW′— with the proviso that O atoms are not linked directly to one another, A5 and A6 are, independently from each other, a) a cyclohexylene group, wherein one or two non-adjacent CH2 groups may be replaced by O or S atoms, b) an unsubstituted 1,4-phenylene group wherein one to three CH groups may be replaced by —N— or a 1,4-phenylene group which is mono- or polysubstituted by F, Cl and/or CH3, c) a bicyclo(2,2,2)octylene group, a naphthalene-2,6-diyl group, a decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydro-naphthalene group, Z3 is, independently from each other, —CO—O—, —O—CO—, —CH2CH2—, —CH2O—, —OCH2—, —C≡C— or a single bond, and m is 1, 2, 3, or 4; wherein at least one of group Z3 is C≡C—.
- 2. A compound of claim 1, wherein R′ and R″ are both reactive groups.
- 3. A compound of claim 1, wherein one of R′ and R″ is a reactive group and the other is an alkyl group of up 15 C atoms which is unsubstituted or substituted by one or more halogens and in which one or more CH2 groups is in each case independently replaced by —O—, —S—, —CO—, —OCO—, —CO—O—, or —O—CO—O— wherein O atoms are not directly linked to one another.
- 4. A compound according to claim 1, wherein R′ and R″ are each selected from (meth)acrylate, epoxid, vinyl and styryl.
- 5. A compound of claim 1, where at least one of R′ and R″ is (meth)acrylate, epoxid, vinyl or styryl.
- 6. A compound of claim 1, wherein —(A5—Z3)m—A6— is selected from formulae (1) to (4):—A5—Z3—A6— (1) —A5—Z3—A5—Z3—A6— (2) —A5—Z3—A5—Z3−—A5—Z3A6— (3) —A5—Z3—A5—Z3−A5—Z3—A5—Z3—A6 (4)
- 7. A compound of claim 6, wherein —(A5—Z3)m—A6— is selected from formulae 2(a)-2(f), 3(a)-3(f), and 4(a)-4(f):-Phe-Z3-Phe- (2)a -Cyc-Z3-Cyc- (2)b -Phe-Z3-Cyc- (2)c -Pyr-Z3-Phe- (2)d -Pyd-Z3-Phe- (2)e -Dio-Z3-Cyc- (2)f -Phe-Z3-Phe-Z3-Phe- (3)a -Cyc-Z3-Phe-Z3-Phe- (3)b -Cyc-Z3-Cyc-Z3-Phe- (3)c -Cyc-Z3-Cyc-Z3-Cyc- (3)d -Pyr-Z3-Phe-Z3-Phe- (3)e-Pyd-Z3-Phe-Z3-Phe- (3)f -Cyc-Z3-Phe-Z3-Phe-Z3-Phe- (4)a -Cyc-Z3-Cyc-Z3-Phe-Z3-Phe- (4)b -Cyc-Z3-Cyc-Z3-Cyc-Z3-Phe- (4)c -Cyc-Z3-Phe-Z3-Phe-Z3-Cyc- (4)d -Phe-Z3-Phe-Z3-Phe-Z3-Phe- (4)e -Cyc-Z3-Cyc-Z3-Cyc-Z3-Cyc- (4)f wherein Cyc is 1,4-cyclohexylene, Phe is 1,4-phenylene which is unsubstituted or mono-, di- or trifluorinated, Dio is 1,3-doixane-2,5-diyl, Pyd is pyridine-2,5-diyl, and Pyr is pyrimidine-2,5-diyl.
- 8. A compound of claim 1, wherein S1 and S2 are not identical.
- 9. A compound of claim 1, wherein at least one of S1 and S2 is a single bond.
- 10. A compound of claim 1, wherein other Z3 groups are selected from —COO—, —OCO—, —CH2CH2— and a single bond.
- 11. A compound according to claim 1, wherein R′ and R″ are each selected from (meth)acrylate, epoxid, vinyl and styryl, and wherein —(A5—Z3)m—A6— is selected from formulae 2(a)-2(f), 3(a)-3(f), and 4(a)-4(f):-Phe-Z3-Phe- (2)a -Cyc-Z3-Cyc- (2)b -Phe-Z3-Cyc- (2)c -Pyr-Z3-Phe- (2)d -Pyd-Z3-Phe- (2)e-Dio-Z3-Cyc- (2)f -Phe-Z3-Phe-Z3-Phe- (3)a -Cyc-Z3-Phe-Z3-Phe- (3)b -Cyc-Z3-Cyc-Z3-Phe- (3)c -Cyc-Z3-Cyc-Z3-Cyc- (3)d -Pyr-Z3-Phe-Z3-Phe- (3)e -Pyd-Z3-Phe-Z3-Phe- (3)f -Cyc-Z3-Phe-Z3-Phe-Z3-Phe- (4)a -Cyc-Z3-Cyc-Z3-Phe-Z3-Phe- (4)b -Cyc-Z3-Cyc-Z3-Cyc-Z3-Phe- (4)c -Cyc-Z3-Phe-Z3-Phe-Z3-Cyc- (4)d -Phe-Z3-Phe-Z3-Phe-Z3-Phe- (4)e -Cyc-Z3-Cyc-Z3-Cyc-Z3-Cyc- (4)f wherein Cyc is 1,4-cyclohexylene, Phe is 1,4-phenylene which is unsubstituted or mono-, di- or trifluorinated. Dio is 1,3-doixane-2,5-diyl, Pyd is pyridine-2,5-diyl, and Pyr is pyrimidine-2,5-diyl.
- 12. A compound of claim 1, wherein one of R′ and R″ is at least one of R′ and R″ is (meth)acrylate, epoxid, vinyl or styryl and the other is an alkyl group of up 15 C atoms which is unsubstituted or substituted by one or more halogens and in which one or more CH2 groups is in each case independently replaced by —O—, —S—, —CO—, —OCO—, —CO—O—, or —O—CO—O—wherein O atoms are not directly linked to one another; andwherein —(A5—Z3)m−A6— is selected from formulae 2(a)-2(f), 3(a)-3(f), and 4(a)-4(f): -Phe-Z3-Phe- (2)a-Cyc-Z3-Cyc- (2)b -Phe-Z3-Cyc- (2)c -Pyr-Z3-Phe- (2)d -Pyd-Z3-Phe- (2)e -Dio-Z3-Cyc- (2)f -Phe-Z3-Phe-Z3-Phe- (3)a -Cyc-Z3-Phe-Z3-Phe- (3)b -Cyc-Z3-Cyc-Z3-Phe- (3)c -Cyc-Z3-Cyc-Z3-Cyc- (3)d -Pyr-Z3-Phe-Z3-Phe- (3)e -Pyd-Z3-Phe-Z3-Phe- (3)f -Cyc-Z3-Phe-Z3-Phe-Z3-Phe- (4)a -Cyc-Z3-Cyc-Z3-Phe-Z3-Phe- (4)b -Cyc-Z3-Cyc-Z3-Cyc-Z3-Phe- (4)c -Cyc-Z3-Phe-Z3-Phe-Z3-Cyc- (4)d -Phe-Z3-Phe-Z3-Phe-Z3-Phe- (4)e -Cyc-Z3-Cyc-Z3-Cyc-Z3-Cyc- (4)f wherein Cyc is 1,4-cyclohexylene, Phe is 1,4-phenylene which is unsubstituted or mono-, di- or trifluorinated, Dio is 1,3-doixane-2,5-diyl, Pyd is pyridine-2,5-diyl, and Pyr is pyrimidine-2,5-diyl.
- 13. A liquid crystalline mixture comprising at least two liquid crystalline compounds, at least one of which is a compound of claim 1.
- 14. A mixture according to claim 13, wherein said mixture contains at least one reactive liquid crystalline compound having one reactive group and at least one reactive liquid crystalline compound having two reactive groups.
- 15. A mixture of claim 13, further comprising one or more compounds of formula I wherein Z1 and Z2 independently of one another, are each a single bond, —CH2CH2—, —COO—, —OCO— or independently of one another, are each trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, and one of can also be pyrimidine-2,5-diyl, pyridine-2,5-diyl or trans-1,3-dioxane-, X1 and X2 independently from one another, are each H or F, Q is CF2, OCF2, C2F4 or a single bond, Y is H,F,Cl or CN, n is 0, 1 or 2, and R is alkyl having up to 13 C atoms, in which one or two non-adjacent CH2 groups are, optionally, replaced by —O—and/or —CH═CH—.
- 16. A mixture according to claim 15, wherein said mixture contains one or more compounds of formula I2, I3 and I4: and wherein R, in each case, is alkyl or alkoxy having 1-10.
- 17. A mixture according to claim 16, wherein in formulas I2, I3 and I4, R is n- alkyl or n-alkoxy having 1-10 C atoms.
Priority Claims (1)
Number |
Date |
Country |
Kind |
92107137 |
Apr 1992 |
EP |
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Parent Case Info
The instant application is a divisional of Ser. No. 09/750,102 filed Dec. 29, 2000, which is a divisional of patent application Ser. No. 09/506,815, filed Feb. 18, 2000 now U.S. Pat. No. 6,187,222, which in turn is a divisional of patent application Ser. No. 09/008,587, filed Jan. 16, 1998 now U.S. Pat. No. 6,042,745, which in turn is a divisional of Ser. No. 08/081,280, filed Jun. 25, 1993 now U.S. Pat. No. 5,871,665, which is the U.S. national phase of PCT application PCT/EP93/00989, filed Apr. 23, 1993, which claims priority to EP application 92 107 137.9, filed Apr. 27, 1992. There are also two other related cases. Ser. No. 08/474,765 U.S. Pat. No. 5,746,938 is a continuation of Ser. No. 08/081,280, and Ser. No. 08/474,895 U.S. Pat. No. 5,723,066 is another divisional of Ser. No. 08/081,280.
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