US4828888A
Expired / Lapsed
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Liquid crystalline polymer composites
Assignee: Celanese Corp
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Filing: 1987-04-10
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Granted: 1989-05-09
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Expires: 2007-04-10
Abstract
Abstract This invention provides an optical medium which consists of a composite of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline polymer component. In one embodiment this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline polymer.
Inventors
- 👤 Alan Buckley
- 👤 Tessie M. Che
- 👤 Thomas M. Leslie
- 👤 James B. Stamatoff
- 👤 Dagobert E. Stuetz
- 👤 Doanld R. Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:09
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
An optical medium comprising a composite composition of a homogeneous inorganic oxide glass monolith prepared by a sol-gel process, with a microporous structure containing a liquid crystalline polymer component; wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pores in the microporous structure have diameters within about a 100 angstrom diameter variation range.
Claim 2
Dependent Claim
65 words
An optical medium comprising a composite composition of a homogeneous inorganic oxide glass monolith prepared by a sol-gel process, with a microporous structure containing a liquid crystalline polymer component; wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pores in the microporous structure have diameters within about a 100 angstrom diameter variation range.
Claim 3
Dependent Claim
14 words
An optical medium in accordance with claim 1 wherein the inorganic oxide comprises silica.
Claim 4
Dependent Claim
24 words
An optical medium in accordance with claim 1 wherein the inorganic oxide comprises a mixture of silica and at least one additional inorganic oxide.
Claim 5
Dependent Claim
33 words
An optical medium in accordance with claim 1 wherein the liquid crystalline polymer component is concentrated in a zone of the microporous structure which is adjacent to a surface of the glass monolith.
Claim 6
Dependent Claim
29 words
An optical medium in accordance with claim 1 wherein the content of the liquid crystalline polymer component has a gradient distribution in the microporous structure of the glass monolith.
Claim 7
Dependent Claim
18 words
An optical medium in accordance with claim 1 which has a thickness dimension less than about 5 millimeters.
Claim 8
Dependent Claim
28 words
An optical medium in accordance with claim 1 wherein between about 5-95 percent of the glass monolith microporous structure volume is filled with the liquid crystalline polymer component.
Claim 9
Dependent Claim
26 words
An optical medium in accordance with claim 1 wherein the liquid crystalline polymer component is in the mesophase state at a temperature above about 40° C.
Claim 10
Dependent Claim
21 words
An optical medium in accordance with claim 1 wherein the liquid crystalline polymer component is in combination with an organic dye.
Claim 11
Dependent Claim
22 words
An optical medium in accordance with claim 1 wherein the liquid crystalline polymer component is a wholly aromatic thermotropic liquid crystalline polymer.
Claim 12
Dependent Claim
21 words
An optical medium in accordance with claim 1 wherein the liquid crystalline polymer component is a side chain liquid crystalline polymer.
Claim 13
Dependent Claim
92 words
An optical medium comprising a composite composition of an inorganic oxide glass prepared by a sol-gel process, monolith with a microporous structure containing a liquid crystalline polymer component which is characterized by a recurring wholly aromatic structural unit corresponding to the formula: --Ar--X--Ar-- where X is a divalent radical selected from estero, amido, azomethino, azo, azoxy, etheno and ethyno groups, and Ar is a divalent aromatic radical selected from phenylene, naphthylene and diphenylene groups, and aromatic radicals corresponding to the formula ##STR3## where Y is a carbonyl, sulfono, oxy or thio group.
Claim 14
Dependent Claim
92 words
An optical medium comprising a composite composition of an inorganic oxide glass prepared by a sol-gel process, monolith with a microporous structure containing a liquid crystalline polymer component which is characterized by a recurring wholly aromatic structural unit corresponding to the formula: --Ar--X--Ar-- where X is a divalent radical selected from estero, amido, azomethino, azo, azoxy, etheno and ethyno groups, and Ar is a divalent aromatic radical selected from phenylene, naphthylene and diphenylene groups, and aromatic radicals corresponding to the formula ##STR3## where Y is a carbonyl, sulfono, oxy or thio group.
Claim 15
Dependent Claim
136 words
An optical medium comprising a composite composition of an inorganic oxide glass monolith prepared by a sol gel process, with a microporous structure containing a side chain liquid crystalline polymer component which is characterized by a recurring structural unit corresponding to the formula: ##STR4## where P is a polymer main chain unit, S is a flexible spacer group having a linear chain length of between about 1-20 atoms, M is a pendant mesogen, and where the pendant mesogens comprise at least about 10 weight percent of the polymer and the polymer has a glass transition temperature above about 40°C.; and wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pores in the microporous structure have diameters within about a 100 angstrom diameter variation range.
Claim 16
Dependent Claim
136 words
An optical medium comprising a composite composition of an inorganic oxide glass monolith prepared by a sol gel process, with a microporous structure containing a side chain liquid crystalline polymer component which is characterized by a recurring structural unit corresponding to the formula: ##STR4## where P is a polymer main chain unit, S is a flexible spacer group having a linear chain length of between about 1-20 atoms, M is a pendant mesogen, and where the pendant mesogens comprise at least about 10 weight percent of the polymer and the polymer has a glass transition temperature above about 40°C.; and wherein the glass monolith microporous structure has pore diameters in the range between about 15-2000 angstroms, and substantially all of the pores in the microporous structure have diameters within about a 100 angstrom diameter variation range.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |