US4730904A
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Organosilicon compounds
Assignee: Merck Patent GmbH
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Filing: 1986-06-13
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Granted: 1988-03-15
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Expires: 2006-06-13
Abstract
Abstract Organosilicon compounds of the formula I R.sup.1 --A.sup.1 --A.sup.2 --O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z c I wherein R 1 , A 1 , A 2 , X, Y, Z, n, a, b and c have the meaning given can be used for producing a homotropic orientation of liquid crystal phases on surfaces.
Inventors
- 👤 Detlef Pauluth
- 👤 Klaus Bofinger
- 👤 Michael Romer
- 👤 Bernhard Scheuble
- 👤 Georg Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:09
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C07F7/12; C07F7/18; C07F7/1804; C09; C09K; C09K19/00; C09K19/04; C09K19/40; C09K19/406; C09K2323/00; C09K2323/03; C09K2323/033; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; G02F1/133719
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
158 words
An organosilicon compound of the formula R.sup.1 --A.sup.1 --A.sup.2 --O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c wherein R 1 is H, alkyl of 1-10 C atoms, alkyl of 1-10 C atoms wherein one or two non-adjacent CH 2 groups are replaced by 0 atoms, F, Cl, Br or CN, A 1 and A 2 are each independently 1, 4-phenylene (Phe) or 1,4cyclohexylene (Cy), X, Y and Z are each independently H, F, Cl, Br, I, CN, NC, OCN, NCO, SCN, NCS, N 3 , alkoxy of 1 to 15 C atoms, 1-methyl-3-oxobut-1-enyloxy or alkoxy of 1-15 C atoms wherein one or more non-adjacent CH 2 groups are replaced by an oxo --O-- atom or --CH═CH--, a, b and c are 0, 1, 2 or 3 and n is 2, 3, 4, 5 or 6, with the provisos that a+b+c+3, at least one of X, Y and Z is other than H and X, Y and Z are not all Cl.
Claim 2
Dependent Claim
158 words
An organosilicon compound of the formula R.sup.1 --A.sup.1 --A.sup.2 --O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c wherein R 1 is H, alkyl of 1-10 C atoms, alkyl of 1-10 C atoms wherein one or two non-adjacent CH 2 groups are replaced by 0 atoms, F, Cl, Br or CN, A 1 and A 2 are each independently 1, 4-phenylene (Phe) or 1,4cyclohexylene (Cy), X, Y and Z are each independently H, F, Cl, Br, I, CN, NC, OCN, NCO, SCN, NCS, N 3 , alkoxy of 1 to 15 C atoms, 1-methyl-3-oxobut-1-enyloxy or alkoxy of 1-15 C atoms wherein one or more non-adjacent CH 2 groups are replaced by an oxo --O-- atom or --CH═CH--, a, b and c are 0, 1, 2 or 3 and n is 2, 3, 4, 5 or 6, with the provisos that a+b+c+3, at least one of X, Y and Z is other than H and X, Y and Z are not all Cl.
Claim 3
Dependent Claim
13 words
A compound of claim 1 of formula R.sup.1 --Phe--Phe--O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c.
Claim 4
Dependent Claim
14 words
A compound of claim 1 of the formula R.sup.1 --Cy--Phe--O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c.
Claim 5
Dependent Claim
14 words
A compound of claim 1 of the formula R.sup.1 Phe--Phe--O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c.
Claim 6
Dependent Claim
14 words
A compound of claim 1 of the formula R.sup.1 --Cy--Cy--O--C.sub.n H.sub.2n --SiX.sub.a Y.sub.b Z.sub.c.
Claim 7
Dependent Claim
10 words
A compound of claim 1 wherein R 1 is alkyl.
Claim 8
Dependent Claim
10 words
A compound of claim 1 wherein R 1 is alkoxy.
Claim 9
Dependent Claim
13 words
A compound of claim 1 wherein X, Y and Z are the same.
Claim 10
Dependent Claim
14 words
A compound of claim 1 wherein X, Y and Z are halogen or alkoxy.
Claim 11
Dependent Claim
17 words
A compound of claim 8 wherein X, Y and Z are methoxy, ethoxy, propyloxy, isopropyloxy or 1-methyl-3-oxobut-1-enyloxy.
Claim 12
Dependent Claim
9 words
A compound of claim 1 wherein n is 3.
Claim 13
Dependent Claim
17 words
A compound of claim 1 wherein at least one of A 1 and A 2 is trans-Cy.
Claim 14
Dependent Claim
17 words
A compound of claim 1 wherein C n H 2 n is --(CH 2 ) 3 --.
Claim 15
Dependent Claim
29 words
In a liquid crystal dielectric useful for electrooptical display elements and comprising at least two liquid crystal components, the improvement wherein the dielectric comprises a compound of claim 1.
Claim 16
Dependent Claim
15 words
A dielectric of claim 14 wherein the amount of said compound is 0.01 to 1%.
Claim 17
Dependent Claim
22 words
In an electrooptical display element comprising a liquid crystal phase, the improvement wherein the phase is a dielectric according to claim 14.
Claim 18
Dependent Claim
9 words
A surface coated with a compound of claim 1.
Claim 19
Dependent Claim
28 words
In an electrooptical display element comprising a liquid crystalline dielectric in contact with a surface, the improvement wherein the surface is coated with a compound of claim 1.
Claim 20
Dependent Claim
6 words
1-triethoxysilyl-3-(p-trans-4-propylcyclohexylphenoxy)-propane, a compound of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |