US4434009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer-coated metallic pigments
Assignee: Toyo Aluminum KK
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Filing: 1981-12-03
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Granted: 1984-02-28
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Expires: 2001-12-03
Abstract
Abstract Polymer-coated metallic pigments for paints are proposed which comprise metallic pigment particles coated with a polymer. They are particularly suitable for use with paints for electrostatic painting, water-based paints, and paints for plastics. They may comprise a silicone compound.
Inventors
- 👤 Toshiaki Banba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:31
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/44; C09; C09C; C09C1/00; C09C1/62; C09C1/64; C09C1/644; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
70 words
A metallic pigment for paints comprising metallic pigment particles directly coated with a polymer obtained by polymerizing a monomer having a polymerizable double bond and at least one epoxy radical or a mixture of said monomer and a comonomer having a polymerizable double bond in the amount of 0.1 to 30 parts by weight in relation to 100 parts by weight of the metallic component in the metallic pigment particles.
Claim 2
Dependent Claim
70 words
A metallic pigment for paints comprising metallic pigment particles directly coated with a polymer obtained by polymerizing a monomer having a polymerizable double bond and at least one epoxy radical or a mixture of said monomer and a comonomer having a polymerizable double bond in the amount of 0.1 to 30 parts by weight in relation to 100 parts by weight of the metallic component in the metallic pigment particles.
Claim 3
Dependent Claim
16 words
The metallic pigment as claimed in claim 1 wherein said metallic pigment particles are aluminum flakes.
Claim 4
Dependent Claim
39 words
The metallic pigment as claimed in claim 1 or 2 wherein the amount of said polymer coated is 0.5 to 15 parts by weight in relation to 100 parts by weight of the metallic component in the metallic pigment.
Claim 5
Dependent Claim
39 words
The metallic pigment for paints as claimed in claim 1 wherein said metallic pigment further comprises 0.5-5.4 parts by weight of a silicone compound in relation to 100 parts by weight of non-volatile component in the polymer-coated metallic pigment.
Claim 6
Dependent Claim
16 words
The metallic pigment as claimed in claim 4 wherein said metallic pigment particles are aluminum flakes.
Claim 7
Dependent Claim
39 words
The metallic pigment as claimed in claim 4 or 5 wherein the amount of said polymer coated is 0.5 to 3 parts by weight in relation to 100 parts by weight of the metallic component in the metallic pigment.
Claim 8
Dependent Claim
86 words
A process for producing a metallic pigment for paints comprising the steps of: dissolving in an organic solvent a monomer having a polymerizable double bond and at least one epoxy radical or a mixture of said monomer and a comonomer having a polymerizable double bond, dispersing metallic pigment particles in said solution, and polymerizing said monomer or said mixture at a temperature of 60°-200° C. in the presence of a polymerization initiator so that the polymer produced will be directly deposited on said metallic pigment particles.
Claim 9
Dependent Claim
86 words
A process for producing a metallic pigment for paints comprising the steps of: dissolving in an organic solvent a monomer having a polymerizable double bond and at least one epoxy radical or a mixture of said monomer and a comonomer having a polymerizable double bond, dispersing metallic pigment particles in said solution, and polymerizing said monomer or said mixture at a temperature of 60°-200° C. in the presence of a polymerization initiator so that the polymer produced will be directly deposited on said metallic pigment particles.
Claim 10
Dependent Claim
22 words
The process as claimed in claim 7 wherein the ratio by weight of said monomer to said comonomer is 3:10 to 10:10.
Claim 11
Dependent Claim
23 words
The process as claimed in claim 7 or 8 wherein said monomer is epoxidated polybutadiene and said comonomers are 1,6-hexanedioldiacrylate and acrylic acid.
Claim 12
Dependent Claim
15 words
The process as claimed in claim 7 wherein said metallic pigment particles are aluminum flakes.
Claim 13
Dependent Claim
44 words
The process as claimed in claim 7 further comprising the step of adding to the polymer-coated metallic pigment 0.5 to 5.4 parts by weight of a silicone compound in relation to 100 parts by weight of the non-volatile component in the polymer-coated metallic pigment.
Claim 14
Dependent Claim
14 words
The process as claimed in claim 11 wherein said silicone compound is silicone oil.
Claim 15
Dependent Claim
14 words
The process as claimed in claim 11 wherein said silicone compound is silicone resin.
Claim 16
Dependent Claim
17 words
The metallic pigment for paints as claimed in claim 4, wherein said silicone compound is silicone oil.
Claim 17
Dependent Claim
15 words
The metallic pigment as claimed in claim 4, wherein said silicone compound is silicone resin.
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) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |