US5964935A
Expired / Lapsed
US
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Initiator-treated pigment particles and method for preparing same
Assignee: AUO Corp
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Filing: 1997-08-22
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Granted: 1999-10-12
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Expires: 2017-08-22
Abstract
Abstract Initiator-treated pigment particles for use in making polymer coated pigment particles, are made up of a plurality of pigment particles. Each of the pigment particles has an outer surface that is covered with a coating of initiator material. The initiator material operates as a nucleus for initiating polymerization on the surface of the particle. The initiator-treated pigment particles are made by providing a plurality of pigment particles and applying a coating of initiator material to the outer surface of each pigment particle.
Inventors
- 👤 Jing Hong Chen
- 👤 Frederic E. Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:14
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0013; G; G02; G02F; G02F1/00; G02F1/01; G02F1/165; G02F1/1675; G02F2001/1678; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
44 words
Initiator-treated pigment particles for use in manufacturing polymer-coated pigment particles, comprising: a plurality of pigment particles each having an outer surface which is covered with a coating of initiator material that operates as a nucleus for initiating polymerization on said surface of said particle.
Claim 2
Dependent Claim
44 words
Initiator-treated pigment particles for use in manufacturing polymer-coated pigment particles, comprising: a plurality of pigment particles each having an outer surface which is covered with a coating of initiator material that operates as a nucleus for initiating polymerization on said surface of said particle.
Claim 3
Dependent Claim
33 words
The initiator-treated pigment particles of claim 1, wherein said plurality of pigment particles are selected from the group consisting of inorganic pigment particles, organic pigment particles, polymer pigment particles, and dye pigment particles.
Claim 4
Dependent Claim
23 words
The initiator-treated pigment particles of claim 1, wherein said coating initiator-material is selected from the group consisting of azo-initiators, photo-initiators, and organic peroxides.
Claim 5
Dependent Claim
16 words
The initiator-treated pigment particles of claim 1, wherein said polymer-coated pigment particles comprise dielectric electrophoretic particles.
Claim 6
Independent Claim
71 words
A method of making initiator-treated pigment particles for use in manufacturing polymer-coated pigment particles, said method comprising the steps of: providing a plurality of pigment particles, each of said particles having an outer surface and applying a coating of initiator material to said outer surface of each of said plurality of pigment particles, said coating of initiator material operating as a nucleus for initiating polymerization on said surface of said particle.
Claim 7
Independent Claim
71 words
A method of making initiator-treated pigment particles for use in manufacturing polymer-coated pigment particles, said method comprising the steps of: providing a plurality of pigment particles, each of said particles having an outer surface and applying a coating of initiator material to said outer surface of each of said plurality of pigment particles, said coating of initiator material operating as a nucleus for initiating polymerization on said surface of said particle.
Claim 8
Dependent Claim
26 words
The method of making initiator-treated pigment particles according to claim 5, wherein said initiator-material is selected from the group consisting of azo-initiators, photo-initiators, and organic peroxides.
Claim 9
Dependent Claim
37 words
The method of making initiator-treated pigment particles according to claim 5, wherein said plurality of pigment particles are selected from the group consisting of inorganic pigment particles, organic pigment particles, polymer pigment particles, and dye pigment particles.
Claim 10
Dependent Claim
33 words
The method of making initiator-treated pigment particles according to claim 5, wherein said step of applying includes the step of dispersing said plurality of pigment particles in a solvent to form a mixture.
Claim 11
Dependent Claim
28 words
The method of making initiator-treated pigment particles according to claim 8, wherein said solvent is selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons, dioxane and dichloromethane.
Claim 12
Dependent Claim
28 words
The method of making initiator-treated pigment particles according to claim 8, wherein said solvent includes a dispersing agent for dispersing said plurality of pigment particles in said solvent.
Claim 13
Dependent Claim
19 words
The method of making initiator-treated pigment particles according to claim 10, wherein said dispersing agent comprises an alkyl hydrocarbon.
Claim 14
Dependent Claim
33 words
The method of making initiator-treated pigment particles according to claim 11, wherein said alkyl hydrocarbon has a functional group selected from the group consisting of --OH functional groups and --NH 2 functional groups.
Claim 15
Dependent Claim
17 words
The method of making initiator-treated pigment particles according to claim 8, wherein said solvent includes said initiator-material.
Claim 16
Dependent Claim
24 words
The method of making initiator-treated pigment particles according to claim 8, wherein said step of applying further includes the step of sonicating said mixture.
Claim 17
Dependent Claim
32 words
The method of making initiator-treated pigment particles according to claim 14, wherein said step of applying further includes the step of evaporating said solvent from said mixture after said step of sonicating.
Claim 18
Dependent Claim
27 words
The method of making initiator-treated pigment particles according to claim 8, wherein said step of applying further includes the step of evaporating said solvent from said mixture.
Claim 19
Dependent Claim
46 words
A formulation for initiator-treated pigment particles that are used for manufacturing polymer-coated pigment particles, comprising: a solvent; a wetting agent for pigment; a polymerization initiator dissolved in said solvent; and a plurality of pigment particles dispersed in said solvent with the assistance of said wetting agent.
Claim 20
Dependent Claim
46 words
A formulation for initiator-treated pigment particles that are used for manufacturing polymer-coated pigment particles, comprising: a solvent; a wetting agent for pigment; a polymerization initiator dissolved in said solvent; and a plurality of pigment particles dispersed in said solvent with the assistance of said wetting agent.
Claim 21
Dependent Claim
22 words
The formulation of claim 17, wherein said solvent is selected from the group consisting of aromatic hydrocarbons, aliphatic hydrocarbons, dioxane and dichloromethane.
Claim 22
Dependent Claim
20 words
The formulation of claim 17, wherein said initiator-material is selected from the group consisting of azo-initiators, photo-initiators, and organic peroxides.
Claim 23
Dependent Claim
31 words
The formulation of claim 17, wherein said plurality of pigment particles are selected from the group consisting of inorganic pigment particles, organic pigment particles, polymer pigment particles, and dye pigment particles.
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| 3.5 Years (Year 4) | 2002-10-11 | 2003-04-12 | 2003-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-11 | 2007-04-12 | 2007-10-12 | $3760.00 | Window Closed / Lapsed |
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