US4869847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microdisperse polymer/liquid crystal composite
Assignee: Celanese Corp
•
Filing: 1987-03-16
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Granted: 1989-09-26
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Expires: 2007-03-16
Abstract
Abstract A novel composite of liquid crystal droplets having a diameter of no more than 0.1 micron dispersed in a synthetic resin matrix is disclosed. The novel material does not scatter light to any appreciable degree.
Inventors
- 👤 Thomas M. Leslie
- 👤 Garo Khanarian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:02
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; C09K19/542; C09K19/544; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/21; G02F1/216
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
60 words
A material which is incapable of substantially scattering visible light comprising droplets of a liquid crystal dispersed in a light-transmissive polymer matrix, said liquid crystal being soluble in the matrix-forming composition and said droplets being spontaneously formed from solution in the composition during solidification thereof wherein at least 85% of said droplets have a diameter no greater than 0.1 micron.
Claim 2
Dependent Claim
60 words
A material which is incapable of substantially scattering visible light comprising droplets of a liquid crystal dispersed in a light-transmissive polymer matrix, said liquid crystal being soluble in the matrix-forming composition and said droplets being spontaneously formed from solution in the composition during solidification thereof wherein at least 85% of said droplets have a diameter no greater than 0.1 micron.
Claim 3
Dependent Claim
19 words
The material of claim 1 wherein the liquid crystal is present in an amount of from 25-40 weight percent.
Claim 4
Dependent Claim
19 words
The material of claim 1 wherein the liquid crystal is present in an amount of from 30-35 weight percent.
Claim 5
Dependent Claim
13 words
The material of claim 2 wherein the droplet size ranges between 0.05±0.02 microns.
Claim 6
Dependent Claim
13 words
The material of claim 3 wherein the droplet size ranges between 0.05±0.02 microns.
Claim 7
Dependent Claim
12 words
The material of claim 1 wherein the polymer is a thermosetting resin.
Claim 8
Dependent Claim
12 words
The material of claim 2 wherein the polymer is a thermosetting resin.
Claim 9
Dependent Claim
12 words
The material of claim 6 wherein the polymer is an epoxy resin.
Claim 10
Dependent Claim
12 words
The material of claim 7 wherein the polymer is an epoxy resin.
Claim 11
Dependent Claim
13 words
The material of claim 8 wherein the liquid crystal material comprises a cyanobiphenyl.
Claim 12
Dependent Claim
13 words
The material of claim 9 wherein the liquid crystal material comprises a cyanobiphenyl.
Claim 13
Dependent Claim
12 words
The material of claim 1 wherein the polymer is a thermoplastic resin.
Claim 14
Dependent Claim
12 words
The material of claim 3 wherein the polymer is a thermoplastic resin.
Claim 15
Dependent Claim
11 words
The material of claim 12 wherein he polymer is an acrylate.
Claim 16
Dependent Claim
11 words
The material of claim 13 wherein the polymer is an acrylate.
Claim 17
Dependent Claim
13 words
The material of claim 14 wherein the liquid crystal material is a cyanobiphenyl.
Claim 18
Dependent Claim
13 words
The material of claim 15 wherein the liquid crystal material is a cyanobiphenyl.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |