US5116528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light modulating material including liquid crystalline material
Assignee: Individual
•
Filing: 1990-02-28
•
Granted: 1992-05-26
•
Expires: 2010-02-28
Abstract
Abstract A light modulating material including liquid crystalline materials dispersed within a polymeric material including a cross-linked isocyanate material. The isocyanate material preferably is acrylic polyisocyanate which when cross-linked, forms a complex urethane having the form: -urethane-acrylic-urethane-cross linking agent.
Inventors
- 👤 Patrick Mullen
- 👤 Frederick E. Nobile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:43
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/52; C09K19/54; C09K19/542; C09K19/544
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
26 words
A light modulating material comprising liquid crystalline material dispersed within a polymer material including an acrylic isocyanate material reacted with an active hydrogen group containing material.
Claim 2
Dependent Claim
26 words
A light modulating material comprising liquid crystalline material dispersed within a polymer material including an acrylic isocyanate material reacted with an active hydrogen group containing material.
Claim 3
Dependent Claim
21 words
The light modulating material of claim 1, wherein said acrylic isocyanate material is cross-linked with an active hydrogen group containing material.
Claim 4
Dependent Claim
30 words
The light modulating material of claim 1, wherein said acrylic isocyanate material comprises a high molecular weight isocyanate resin, said acrylic isocyanate resin having a molecular weight above about 300.
Claim 5
Dependent Claim
17 words
The light modulating material of claim 1, wherein said acrylic isocyanate material comprises an acrylate isocyanate material.
Claim 6
Dependent Claim
17 words
The light modulating material of claim 1, wherein said acrylic isocyanate material comprises an acrylate polyisocyanate resin.
Claim 7
Dependent Claim
24 words
The light modulating material of claim 1, wherein said polymer material includes a cross-linking agent selected from the group consisting of polyols and diols.
Claim 8
Dependent Claim
41 words
A light modulating material comprising liquid crystalline material dispersed within a polymer material including an acrylic isocyanate material, said acrylic isocyanate material being cross-linked with an active hydrogen group containing material to form a complex urethane having the form -acrylic urethane-polyol.
Claim 9
Dependent Claim
41 words
A light modulating material comprising liquid crystalline material dispersed within a polymer material including an acrylic isocyanate material, said acrylic isocyanate material being cross-linked with an active hydrogen group containing material to form a complex urethane having the form -acrylic urethane-polyol.
Claim 10
Dependent Claim
43 words
The light modulating material of claim 1, wherein said polymer material comprises a complex urethane resulting from the reaction of an acrylic isocyanate such as polyacrylic -polyisocyanate or polyacrylic-urethane polyisocyanate with a polyol to produce a polymer having the general form -acrylic urethane-polyol.
Claim 11
Dependent Claim
14 words
The light modulating material of claim 1, wherein said polymer material includes diisocyanate co-reactants.
Claim 12
Dependent Claim
26 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including an acrylic isocyanate material cross-linked with an active hydrogen group containing material.
Claim 13
Dependent Claim
26 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including an acrylic isocyanate material cross-linked with an active hydrogen group containing material.
Claim 14
Dependent Claim
28 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including a cross-linked acrylic isocyanate material, said cross-linked acrylic isocyanate material comprising a complex urethane.
Claim 15
Dependent Claim
28 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including a cross-linked acrylic isocyanate material, said cross-linked acrylic isocyanate material comprising a complex urethane.
Claim 16
Dependent Claim
27 words
The liquid crystal film of claim 10, wherein said cross-linked acrylic isocyanate material is cross-linked with a cross-linker selected from the group consisting of polyols and diols.
Claim 17
Dependent Claim
20 words
The liquid crystal film of claim 10, wherein said cross-linked acrylic isocyanate material comprises an acrylic with active isocyanate groups.
Claim 18
Dependent Claim
31 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including a cross-linked acrylic isocyanate material, polymer film comprises a complex urethane having the form of -acrylic urethane-polyol.
Claim 19
Dependent Claim
31 words
A liquid crystal film comprising liquid crystalline material dispersed within a polymer film including a cross-linked acrylic isocyanate material, polymer film comprises a complex urethane having the form of -acrylic urethane-polyol.
Claim 20
Dependent Claim
18 words
The liquid crystal film of claim 10, wherein said liquid crystal material includes a mixture of nematic compounds.
Claim 21
Independent Claim
56 words
A method of forming a light modulating material comprising the steps of: dissolving a polymer material including an acrylic isocyanate material using a solvent; adding liquid crystal material to said dissolved polymer material; and adding an agent having an active hydrogen group to said dissolved polymer material so that said agent reacts with said acrylic isocyanate.
Claim 22
Independent Claim
56 words
A method of forming a light modulating material comprising the steps of: dissolving a polymer material including an acrylic isocyanate material using a solvent; adding liquid crystal material to said dissolved polymer material; and adding an agent having an active hydrogen group to said dissolved polymer material so that said agent reacts with said acrylic isocyanate.
Claim 23
Dependent Claim
18 words
The method of claim 16, wherein said agent is selected from the group consisting of polyols and diols.
Claim 24
Dependent Claim
21 words
The method of claim 16, wherein said solvent is selected from the group consisting of cyclohexanone, toluene, ethyl acetate, and chloroform.
Claim 25
Dependent Claim
27 words
The method of claim 16, wherein said dissolved polymer material containing said liquid crystal material and said agent are applied to a surface to form a film.
Claim 26
Dependent Claim
21 words
The method of claim 19, further comprising the step of permitting evaporation of said solvent to allow said film to solidify.
Claim 27
Dependent Claim
38 words
An operationally smectic composition of nematic liquid crystals within a polymeric material, said material capable of reducing liquid crystal surface interactions to a sufficient degree to allow extended memory properties to be taken on by said liquid crystals.
Claim 28
Dependent Claim
38 words
An operationally smectic composition of nematic liquid crystals within a polymeric material, said material capable of reducing liquid crystal surface interactions to a sufficient degree to allow extended memory properties to be taken on by said liquid crystals.
Claim 29
Dependent Claim
21 words
The operationally smectic composition of claim 21, wherein said memory manifests itself for a period of at least about three days.
Claim 30
Dependent Claim
24 words
The operationally smectic composition of claim 21, wherein said polymeric material comprises an acrylic isocyanate material reacted with an active hydrogen group containing material.
Claim 31
Dependent Claim
40 words
The operationally smectic composition of claim 21, wherein said polymeric material comprises a structure resulting from cross-linking of an acrylic isocyanate with a cross-linker to form: --AU--C--; wherein AU represents an acrylic urethane molecule and C represents a cross-linking molecule.
Claim 32
Dependent Claim
22 words
The operationally smectic composition of claim 24, wherein said cross-linker agent is selected from the group consisting essentially of polyols and diols.
Claim 33
Dependent Claim
24 words
The operationally smectic composition of claim 23, wherein said acrylic isocyanate is selected from the group consisting essentially of polyacrylic polyisocyanate and polyacrylic-urethane polyisocyanate.
Claim 34
Dependent Claim
47 words
A light modulating material comprising a liquid crystal phase dispersed within a polymer matrix comprising a high molecular weight acrylic isocyanate resin and at least one cross-linking agent, said acrylic isocyanate resin having a molecular weight greater than 300, said cross-linking agent having an active hydrogen group.
Claim 35
Dependent Claim
47 words
A light modulating material comprising a liquid crystal phase dispersed within a polymer matrix comprising a high molecular weight acrylic isocyanate resin and at least one cross-linking agent, said acrylic isocyanate resin having a molecular weight greater than 300, said cross-linking agent having an active hydrogen group.
Claim 36
Dependent Claim
17 words
The light modulating material of claim 27, wherein said liquid crystal material comprises a nematic type material.
Claim 37
Dependent Claim
19 words
The light modulating material of claim 27, wherein said isocyanate resin comprises a high molecular weight acrylic isocyanate resin.
Claim 38
Dependent Claim
33 words
The light modulating material of claim 27, wherein said isocyanate material comprises an acrylic resin containing active isocyanate groups and said cross-linking agent is selected from the group consisting of diols or polyols.
Claim 39
Dependent Claim
15 words
The light modulating material of claim 28, wherein said polymer matrix comprises a complex urethane.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |