US5294664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions of fluorescent pigments
Assignee: DAY-GLO(TM) COLOR CORP
•
Filing: 1992-09-29
•
Granted: 1994-03-15
•
Expires: 2012-09-29
Abstract
Abstract An aqueous dispersion of a fluorescent pigment comprising: a water insoluble polymer; fluorescent dye; emulsifiers; and water. The polymer comprises: a water insoluble vinyl monomer free of polar groups; vinyl nitrile; a vinyl monomer containing sulfonate groups; and a polar vinyl monomer from the group consisting of: polar acrylate esters; vinyl acetate; polar methacrylate esters and a substituted acrylamide containing hydroxyl or carboxylic ester groups. The invention also relates to a fluorescent pigment and method for preparing the dispersion and pigment.
Inventors
- 👤 Robert G. Morrison, Jr.
- 👤 Steven G. Streitel
- 👤 Jeffrey R. Cramm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:54
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; C08; C08F; C08F2/00; C08F2/44; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K9/00; C08K9/10; C09B; C09B69/00; C09B69/10; C09B69/103; C09B69/109; C09D; C09D11/00; C09D11/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
An aqueous dispersion of a fluorescent pigment comprising: A. a fluorescent pigment comprising: 1. water insoluble polymer comprising at least four monomers, at least one monomer selected from each of the following groups (1) through (4): a. from about 40% to about 78.5% total polymer weight of water insoluble vinyl monomer free of polar groups; b. from about 15% to about 35% by total polymer weight of vinyl nitrile; c. from about 1.5% to about 5% by total polymer weight of vinyl monomer containing at least one sulfonate group; and d. from about 5% to about 20% total polymer weight of polar vinyl monomer selected from the group consisting of: (1) polar acrylate esters; (2) polar methacrylate esters; (3) vinyl acetate; (4) a substituted acrylamide containing hydroxyl or carboxylic ester groups; and (5) mixtures thereof; 2. fluorescent dye in an amount sufficient to impart fluorescent color to the pigment; B. water in an amount to provide a total solids content of from about 0.5% to less than 100%.
Claim 2
Dependent Claim
168 words
An aqueous dispersion of a fluorescent pigment comprising: A. a fluorescent pigment comprising: 1. water insoluble polymer comprising at least four monomers, at least one monomer selected from each of the following groups (1) through (4): a. from about 40% to about 78.5% total polymer weight of water insoluble vinyl monomer free of polar groups; b. from about 15% to about 35% by total polymer weight of vinyl nitrile; c. from about 1.5% to about 5% by total polymer weight of vinyl monomer containing at least one sulfonate group; and d. from about 5% to about 20% total polymer weight of polar vinyl monomer selected from the group consisting of: (1) polar acrylate esters; (2) polar methacrylate esters; (3) vinyl acetate; (4) a substituted acrylamide containing hydroxyl or carboxylic ester groups; and (5) mixtures thereof; 2. fluorescent dye in an amount sufficient to impart fluorescent color to the pigment; B. water in an amount to provide a total solids content of from about 0.5% to less than 100%.
Claim 3
Dependent Claim
37 words
The invention of claim 1, wherein the water insoluble non polar vinyl monomer is styrene, the vinyl monomer containing sulfonate groups is sodium 2-acrylamido-2-methylpropane-sulfonate, the polar vinyl monomer is hydroxypropyl methacrylate, and the vinyl nitrile is acrylonitrile.
Claim 4
Dependent Claim
17 words
The invention of claim 1, wherein the pigment has a particle size not greater than one micron.
Claim 5
Dependent Claim
17 words
The invention of claim 1, wherein the pigment has a particle size not greater than 10 microns.
Claim 6
Dependent Claim
9 words
The invention of claim 1, further comprising anionic surfactant.
Claim 7
Dependent Claim
9 words
The invention of claim 1, further comprising nonionic surfactant.
Claim 8
Dependent Claim
8 words
The invention of claim 1, further comprising dispersant.
Claim 9
Dependent Claim
169 words
An aqueous dispersion of a fluorescent pigment comprising: A. a fluorescent pigment comprising: 1. water insoluble polymer comprising at least four monomers, at least one monomer selected from each of the following groups (1) through (4): a. from about 40% to about 78.5% total polymer weight of water insoluble vinyl monomer free of polar groups; b. from about 15% to about 35% by total polymer weight of vinyl nitrile; c. from about 1.5% to about 5% by total polymer weight of vinyl monomer containing at least one sulfonate group; and d. from about 5% to about 20% total polymer weight of a polar vinyl monomer selected from the group consisting of: (1) polar acrylate esters; (2) polar methacrylate esters; (3) vinyl acetate; (4) a substituted acrylamide containing hydroxyl or carboxylic ester groups; and (5) mixture thereof; 2. fluorescent dye in an amount sufficient to impart fluorescent color to the pigment; B. water in an amount to provide a total solids content of from about 0.5% to less than 100%.
Claim 10
Dependent Claim
169 words
An aqueous dispersion of a fluorescent pigment comprising: A. a fluorescent pigment comprising: 1. water insoluble polymer comprising at least four monomers, at least one monomer selected from each of the following groups (1) through (4): a. from about 40% to about 78.5% total polymer weight of water insoluble vinyl monomer free of polar groups; b. from about 15% to about 35% by total polymer weight of vinyl nitrile; c. from about 1.5% to about 5% by total polymer weight of vinyl monomer containing at least one sulfonate group; and d. from about 5% to about 20% total polymer weight of a polar vinyl monomer selected from the group consisting of: (1) polar acrylate esters; (2) polar methacrylate esters; (3) vinyl acetate; (4) a substituted acrylamide containing hydroxyl or carboxylic ester groups; and (5) mixture thereof; 2. fluorescent dye in an amount sufficient to impart fluorescent color to the pigment; B. water in an amount to provide a total solids content of from about 0.5% to less than 100%.
Claim 11
Dependent Claim
37 words
The invention of claim 8, wherein the water insoluble non polar vinyl monomer is styrene, the vinyl monomer containing sulfonate groups is sodium 2-acrylamido-2-methylpropane-sulfonate, the polar vinyl monomer is hydroxypropyl methacrylate, and the vinyl nitrile is acrylonitrile.
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) | 1997-03-14 | 1997-09-13 | 1998-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-14 | 2001-09-13 | 2002-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-14 | 2005-09-13 | 2006-03-15 | $7700.00 | Window Closed / Lapsed |