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US4772331A
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Flaky colored pigments, methods for their production, and their use in cosmetic compositions
Assignee: Merck Patent GmbH
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Filing: 1986-10-24
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Granted: 1988-09-20
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Expires: 2006-10-24
Abstract
Abstract Colored flaky colored pigments are obtained by uniformly adhering a finely divided color pigment onto a flaky substrate by the use of an high molecular weight organic compound as a binder.
Inventors
- 👤 Tamio Noguchi
- 👤 Takaji Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:31
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/405; C09C3/00; C09C3/10; A; A61; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/0254; A61K8/18; A61K8/19; A61K8/26; A61K8/72; A61K8/81; A61K8/8129; A61K8/817; A61K8/8176; A61K8/84; A61K8/86; A61Q; A61Q1/00; A61Q1/02; C09B; C09B63/00; C09B67/00; C09B67/0033; C09B67/0097; C09C1/0015; C09C1/28; C09C1/32; C09C1/42; C09C3/006; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42; A61K2800/43; A61K2800/436; A61K2800/60; A61K2800/61; A61K2800/614; C01; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/20; C01P2004/60; C01P2004/61; C01P2004/62; C01P2006/00; C01P2006/60; C01P2006/90; C09C2200/00; C09C2200/10; C09C2200/102; C09C2200/30; C09C2200/301; C09C2200/40; C09C2200/409; C09C2200/50; C09C2200/507
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
26 words
Free-flowing colored flaky pigments comprising flaky substrates having a finely divided color pigment material adhered on the surfaces thereof by a high molecular weight organic binder.
Claim 2
Dependent Claim
26 words
Free-flowing colored flaky pigments comprising flaky substrates having a finely divided color pigment material adhered on the surfaces thereof by a high molecular weight organic binder.
Claim 3
Dependent Claim
27 words
Flaky pigments of claim 1 wherein said binder is a high molecular weight organic compound having an average molecular weight of from about 50 to about 160,000.
Claim 4
Dependent Claim
27 words
Flaky pigments of claim 2 wherein said binder comprises a high molecular weight organic compound having an average molecular weight of from about 3,000 to about 50,000.
Claim 5
Dependent Claim
29 words
Flaky pigments of claim 1 comprising from about 0.5 to about 30% by weight of said color pigment and about 0.1 to about 10% by weight of said binder.
Claim 6
Dependent Claim
45 words
Flaky pigments of claim 4 comprising from about 1 to about 20% by weight of said color pigment and about 1 to about 7% by weight of said binder and wherein said flaky substrate is talc, kaolin, bismuth oxychloride, mica or a synthetic pearl pigment.
Claim 7
Dependent Claim
12 words
Flaky pigments of claim 1 wherein said binder is a polyethylene glycol.
Claim 8
Dependent Claim
12 words
Flaky pigments of claim 1 wherein said binder is a polypropylene glycol.
Claim 9
Dependent Claim
12 words
Flaky pigments of claim 1 wherein said binder is a polyvinyl pyrrolidone.
Claim 10
Dependent Claim
12 words
Flaky pigments of claim 1 wherein said binder is a polyvinyl alcohol.
Claim 11
Dependent Claim
11 words
Flaky pigments of claim 1 wherein said binder is a polyacrylate.
Claim 12
Dependent Claim
11 words
Flaky pigments of claim 1 wherein said binder is a polyethylene.
Claim 13
Dependent Claim
14 words
Flaky pigments of claim 1 wherein said binder is a cellulose or cellulose derivative.
Claim 14
Dependent Claim
77 words
A process for the production of a colored flaky pigment comprising admixing (A) a suspension or solution of a color pigment and a high molecular weight organic compound in water and/or an alcohol with (B) a suspension of a flaky substrate in a solution of a high molecular weight organic compound in water and/or alcohol whereby said color material is precipitated onto the surface of said substrate and bound thereto by said high molecular weight organic compound.
Claim 15
Dependent Claim
77 words
A process for the production of a colored flaky pigment comprising admixing (A) a suspension or solution of a color pigment and a high molecular weight organic compound in water and/or an alcohol with (B) a suspension of a flaky substrate in a solution of a high molecular weight organic compound in water and/or alcohol whereby said color material is precipitated onto the surface of said substrate and bound thereto by said high molecular weight organic compound.
Claim 16
Dependent Claim
24 words
A process of claim 13 wherein said high molecular weight organic compound has an average molecular weight of from about 50 to about 160,000.
Claim 17
Dependent Claim
24 words
A process of claim 14 wherein said high molecular weight organic compound has an average molecular weight of from about 3,000 to about 50,000.
Claim 18
Dependent Claim
29 words
In a powdery cosmetic composition comprising colored flaky pigments and at least one other cosmetically compatible component, the improvement wherein said colored flaky pigments are those of claim 1.
Claim 19
Dependent Claim
29 words
In a powdery cosmetic composition comprising colored flaky pigments and at least one other cosmetically compatible component, the improvement wherein said colored flaky pigments are those of claim 2.
Claim 20
Dependent Claim
29 words
In a powdery cosmetic composition comprising colored flaky pigments and at least one other cosmetically compatible component, the improvement wherein said colored flaky pigments are those of claim 3.
Claim 21
Dependent Claim
10 words
Colored flaky pigment produced by the process of claim 13.
Claim 22
Dependent Claim
31 words
Colored flaky pigments of claim 3, wherein said binder is selected from the group consisting of polyethylene and polypropylene glycols, polyvinyl pyrrolidones, polyvinyl alcohols, polyacrylates, polyolefins and celloluse and cellulose derivatives.
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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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |