US4260424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing a pigment composition
Assignee: Artience Co Ltd
•
Filing: 1979-08-17
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Granted: 1981-04-07
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Expires: 1999-08-17
Abstract
Abstract A method for preparing a resinous pigment composition is disclosed which method includes charging pigment, water and water-insoluble resin which is solid at room temperature into a mill containing a dispersing medium and milling the charge at a temperature below the softening point of the resin to reduce the pigment to a fine powder and to disperse it uniformly throughout the resin.
Inventors
- 👤 Naoji Mizoguchi
- 👤 Eiichi Takama
- 👤 Kazuo Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C09; C09D; C09D17/00; C09D17/001
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
A method for preparing a resinous pigment composition comprising: charging pigment, water and water-insoluble resin which is solid at room temperature into a mill containing a dispersing medium without any additive which would cause said resin to dissolve or swell; and, milling the charge at a temperature below the softening point of the resin to reduce the pigment to a fine powder and to disperse it uniformly throughout the resin.
Claim 2
Independent Claim
70 words
A method for preparing a resinous pigment composition comprising: charging pigment, water and water-insoluble resin which is solid at room temperature into a mill containing a dispersing medium without any additive which would cause said resin to dissolve or swell; and, milling the charge at a temperature below the softening point of the resin to reduce the pigment to a fine powder and to disperse it uniformly throughout the resin.
Claim 3
Dependent Claim
23 words
The method as claimed in claim 1, wherein the pigment, water and water-insoluble resin are pre-mixed prior to being charged into the mill.
Claim 4
Dependent Claim
20 words
The method as claimed in claim 1, wherein the mill is a ball mill, sand mill, pearl mill or attritor.
Claim 5
Dependent Claim
32 words
The method as claimed in claim 3, wherein the dispersing medium is beads having a diameter of 0.1 to 10 mm and made of glass, flint stone, stainless steel, sand or ceramics.
Claim 6
Dependent Claim
17 words
The method as claimed in claim 1, further comprising removing water from the thus dispersed pigment composition.
Claim 7
Dependent Claim
25 words
The method as claimed in claim 1, wherein said resin is selected from the group consisting of rosin, modified rosins, ketone resins and xylene resins.
Claim 8
Dependent Claim
34 words
The method as claimed in claim 1, wherein said resin is selected from the group consisting of maleic acid resins modified with rosin, styrene-maleic acid resins, vinylchloride-vinylacetate copolymers and phenolic resins modified with rosin.
Claim 9
Dependent Claim
35 words
A method in accordance with claim 1, 6 or 7 further comprising: admixing the milled charge with at least one member selected from the group consisting of ammonia and amines to form a water-base paint.
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GB1224627A
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JPS46932Y1
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JPS526746A
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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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |