US5260052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating pigments
Assignee: Eastman Chemical Co
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Filing: 1992-07-20
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Granted: 1993-11-09
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Expires: 2012-07-20
Abstract
Abstract The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 mu m.
Inventors
- 👤 Kimberly T. Peters
- 👤 Stephen H. W. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0092; C09B67/0095; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/85; A61Q; A61Q1/00; A61Q1/02; A61Q1/08; A61Q1/10; C08; C08J; C08J3/00; C08J3/20; C08J3/205; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
239 words
A cosmetic formulation comprising (I) about 10 to about 60 weight % of an oil phase, and (II) about 40 to about 90 weight % of a water phase which comprises a pigment composition comprising: (A) about 7 to about 48 weight % of a linear, water-dispersible polyester material having an inherent viscosity of at least about 0.1 as measured in a 60/40 parts by weight solution of phenol/tetrachloroethane at 25° C. and at a concentration of 0.5 gram of polyester in 100 ml of solvent, and said polyester material having incorporated therein at least one sulfomonomer, (B) about 25 to about 73 weight % of a pigment material, and (C) about 5 to about 50 weight % of water, wherein said pigment composition comprises a continuous phase which comprises a major portion of said water and a major portion of said polyester material and a dispersed phase which comprises a major portion of said pigment material, and wherein said polyester material of said pigment composition has an average particle size of less than 1 μm; and wherein said pigment composition has a zero shear rate viscosity of greater than or equal to 500,000 poise; wherein about 1 to about 30 weight % of the formulation is said pigment composition, and wherein about 1 to about 25 weight percent of the formulation is at least one emulsifier which can be in the oil phase, the water phase or both.
Claim 2
Dependent Claim
239 words
A cosmetic formulation comprising (I) about 10 to about 60 weight % of an oil phase, and (II) about 40 to about 90 weight % of a water phase which comprises a pigment composition comprising: (A) about 7 to about 48 weight % of a linear, water-dispersible polyester material having an inherent viscosity of at least about 0.1 as measured in a 60/40 parts by weight solution of phenol/tetrachloroethane at 25° C. and at a concentration of 0.5 gram of polyester in 100 ml of solvent, and said polyester material having incorporated therein at least one sulfomonomer, (B) about 25 to about 73 weight % of a pigment material, and (C) about 5 to about 50 weight % of water, wherein said pigment composition comprises a continuous phase which comprises a major portion of said water and a major portion of said polyester material and a dispersed phase which comprises a major portion of said pigment material, and wherein said polyester material of said pigment composition has an average particle size of less than 1 μm; and wherein said pigment composition has a zero shear rate viscosity of greater than or equal to 500,000 poise; wherein about 1 to about 30 weight % of the formulation is said pigment composition, and wherein about 1 to about 25 weight percent of the formulation is at least one emulsifier which can be in the oil phase, the water phase or both.
Claim 3
Dependent Claim
37 words
The cosmetic formulation of claim 1 wherein component (I) is present in an amount of about 20 to about 30 weight %, component (II) is present in an amount of about 80 to about 70 weight %.
Claim 4
Dependent Claim
35 words
The cosmetic formulation of claim 2 wherein about 15 to about 25 weight % of the formulation is said pigment composition and about 10 to about 20 weight percent of the formulation is said emulsifier.
Claim 5
Dependent Claim
16 words
The cosmetic formulation of claim 1 in the form of a mascara or a liquid make-up.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |