US4410570A
Expired / Lapsed
US
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Compositions containing liquid-crystalline phases
Assignee: Consortium fuer Elektrochemische Industrie GmbH
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Filing: 1982-02-25
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Granted: 1983-10-18
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Expires: 2002-02-25
Abstract
Abstract This invention relates to compositions containing liquid-crystalline phases which comprises a cyclic organopolysiloxane having mesogenic molecules chemically bonded thereto.
Inventors
- 👤 Franz-Heinrich Kreuzer
- 👤 Magdi E. Gawhary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:15
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/38; C09; C09K; C09K19/00; C09K19/04; C09K19/40; C09K19/406; C09K19/408; C09K2323/00; C09K2323/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
A composition having a liquid-crystalline phase containing a cyclic organopolysiloxane having at least one mesogenic group chemically bonded to the cyclic organopolysiloxane.
Claim 2
Dependent Claim
22 words
A composition having a liquid-crystalline phase containing a cyclic organopolysiloxane having at least one mesogenic group chemically bonded to the cyclic organopolysiloxane.
Claim 3
Dependent Claim
13 words
The composition of claim 1, wherein the composition contains nematic or cholesteric phases.
Claim 4
Dependent Claim
20 words
The composition of claim 1, wherein nematogenic and cholesterogenic or chiral molecules are intramolecularly chemically bonded to the cyclic organopolysiloxane.
Claim 5
Dependent Claim
47 words
A process for preparing a composition having a liquid-crystalline phase which comprises reacting a cyclic organohydrogenpolysiloxane with vinyl-substituted mesogenic molecules in about equimolar amounts, based on the siloxane hydrogen groups, in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to aliphatic multiple bonds.
Claim 6
Dependent Claim
47 words
A process for preparing a composition having a liquid-crystalline phase which comprises reacting a cyclic organohydrogenpolysiloxane with vinyl-substituted mesogenic molecules in about equimolar amounts, based on the siloxane hydrogen groups, in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to aliphatic multiple bonds.
Claim 7
Dependent Claim
16 words
The process of claim 4, wherein the reaction is conducted in the presence of a solvent.
Claim 8
Dependent Claim
33 words
A process for coating a substrate which comprises coating a substrate with a cyclic organopolysiloxane having at least one mesogenic group chemically bonded to the cyclic organopolysiloxane and thereafter cooling the coated substrate.
Claim 9
Dependent Claim
33 words
A process for coating a substrate which comprises coating a substrate with a cyclic organopolysiloxane having at least one mesogenic group chemically bonded to the cyclic organopolysiloxane and thereafter cooling the coated substrate.
Claim 10
Dependent Claim
18 words
The process of claim 6, wherein the substrate is coated at a temperature above the glass transition temperature.
References Cited (Backward Citations)
US4358391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |