US4755229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored micaceous pigments
Assignee: BASF Catalysts LLC
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Filing: 1987-02-09
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Granted: 1988-07-05
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Expires: 2007-02-09
Abstract
Abstract Dispersed insoluble colored pigments are coated on the surface of mica and oxide-coated mica pigments by deposition in a precipitate of a polyvalent cation and an anionic polymeric substance. The resulting combination pigments have more than one color, depending on the angle of viewing.
Inventors
- 👤 Louis Armanini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
C; C09; C09B; C09B63/00; C09C; C09C1/00; C09C1/0015; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/80; C01P2004/82; C01P2004/84; C09C2200/00; C09C2200/10; C09C2200/102; C09C2200/30; C09C2200/301; C09C2200/302; C09C2200/303; C09C2200/40; C09C2200/402; C09C2200/403; C09C2200/404; C09C2200/405; C09C2220/00; C09C2220/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
56 words
A colored micaceous pigment comprising micaceous platelets coated with a layer comprising hydrous oxide or hydroxide of a polyvalent cation, precipitate of said polyvalent cation and an anionic polymeric substance, and water-insoluble colored pigment, the percentages of said cation, substance and pigment based on the weight of said micaceous pigment being 0.01-20, 0.01-20, and 0.01-30, respectively.
Claim 2
Dependent Claim
56 words
A colored micaceous pigment comprising micaceous platelets coated with a layer comprising hydrous oxide or hydroxide of a polyvalent cation, precipitate of said polyvalent cation and an anionic polymeric substance, and water-insoluble colored pigment, the percentages of said cation, substance and pigment based on the weight of said micaceous pigment being 0.01-20, 0.01-20, and 0.01-30, respectively.
Claim 3
Dependent Claim
26 words
The pigment of claim 1, wherein said cation is at least one member of the group of Al, Cr, Ti, Zn, Mg, Zr, Fe and Sn.
Claim 4
Dependent Claim
10 words
The pigment of claim 1, wherein said cation is chromium.
Claim 5
Dependent Claim
10 words
The pigment of claim 1, wherein said cation is aluminum.
Claim 6
Dependent Claim
12 words
The pigment of claim 1, wherein said mica platelets are oxide coated.
Claim 7
Dependent Claim
13 words
The pigment of claim 1, wherein said platelets are TiO 2 -coated mica.
Claim 8
Dependent Claim
15 words
The pigment of claim 1, wherein said platelets are Fe 2 O 3 -coated mica.
Claim 9
Dependent Claim
24 words
The pigment of claim 1, wherein said substance is at least one member of the group of albumin, gelatin, polyacrylic acid, alginate and polysaccharide.
Claim 10
Dependent Claim
16 words
The pigment of claim 1, wherein said water-insoluble pigment is a phthalocyanine, quinacridioxazine or carbon black.
Claim 11
Dependent Claim
42 words
The pigment of claim 1, wherein said cation is at least one member of the group of Al, Cr, Ti, Zn, Mg, Zr, Fe and Sn and said platelets are mica, TiO 2 -coated mica or Fe 2 O 3 -coated mica.
Claim 12
Dependent Claim
12 words
The pigment of claim 10, wherein said cation is Al or Cr.
Claim 13
Dependent Claim
14 words
A paint comprising a paint vehicle and the colored micaceous pigment of claim 1.
Claim 14
Dependent Claim
14 words
A paint comprising a paint vehicle and the colored micaceous pigment of claim 10.
Claim 15
Dependent Claim
84 words
A method of preparing the colored micaceous pigment of claim 1, which comprises combining an aqueous suspension of micaceous platelets with an aqueous suspension of water-insoluble colored pigment containing an anionic polymeric substance, combining the resulting suspension with an aqueous acidic solution of a polyvalent cation which forms a hydrous oxide or hydroxide precipitate and a precipitate with said substance at a given pH and a quantity of a pH adjustment agent to provide said given pH, and recovering the resulting colored micaceous pigment.
Claim 16
Dependent Claim
11 words
The method of claim 14, wherein said agent is a base.
Claim 17
Dependent Claim
34 words
The method of claim 15, wherein said cation is at least one member of the group of Al, Cr, Ti, Zn, Mg, Zr, Fe and Sn and said platelets are mica or oxide-coated mica.
Claim 18
Dependent Claim
36 words
The method of claim 16, wherein said substance is at least one member of the group of albumin, gelatin, polyacrylic acid, alginate and polysaccharide and said water-insoluble pigment is a phthalocyanine, quinacridone, dioxazine or carbon black.
Claim 19
Dependent Claim
34 words
The method of claim 17, wherein said cation is Al or Cr, said platelets are mica, TiO 2 -coated mica or Fe 2 O 3 -coated mica, and said given pH is about 4-8.
Claim 20
Dependent Claim
18 words
The method of claim 18, wherein said base and acidic solution are simultaneously added to said resulting suspension.
Claim 21
Dependent Claim
45 words
The method of claim 19, wherein said base is NaOH, the amount of insoluble pigment is about 0.01%-30%, the amount of said substance is about 0.01%-20% and the amount of said cation is about 0.01%-20%, each percentage being based on the weight of said platelets.
Claim 22
Dependent Claim
8 words
The product of the method of claim 14.
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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) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |