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Patent US3900619A successfully refreshed from Google Patents.
US3900619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting the staining of latex paints on wood
Assignee: Dow Chemical Co
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Filing: 1973-07-26
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Granted: 1975-08-19
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Expires: 1993-07-26
Abstract
Abstract The staining of latex paints on wood due to bleeding of watersoluble tannin into the paint film is inhibited by the application to the wood of a water-soluble S-aryl cycloaliphatic sulfonium compound prior to or concurrently with the application of the latex paint.
Inventors
- 👤 Robert H Lalk
- 👤 Donald L Schmidt
- 👤 Mary R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/06; B05D7/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
43 words
THE PROCESS OF INHIBITING THE STAINING OF LATEX PAINT APPLIED TO A WOOD SURFACE CONTAINING A WATERSOLUBLE TANNIN COMPRISING APPLYING TO THE WOOD SURFACE, PRIOR TO OR CONCURRENTLY WITH THE LATEX PAINT, AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CYCLIC SULFONIUM COMPOUND OFTHE FORMULA
Claim 2
Dependent Claim
43 words
THE PROCESS OF INHIBITING THE STAINING OF LATEX PAINT APPLIED TO A WOOD SURFACE CONTAINING A WATERSOLUBLE TANNIN COMPRISING APPLYING TO THE WOOD SURFACE, PRIOR TO OR CONCURRENTLY WITH THE LATEX PAINT, AN AQUEOUS SOLUTION OF A WATER-SOLUBLE CYCLIC SULFONIUM COMPOUND OFTHE FORMULA
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the sulfonium compound is dissolved in the paint.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein n is 1 and r is 0.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein p is 2 and R'' is H.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein m is 1 and R is (CH3)3.
Claim 7
Dependent Claim
14 words
Latex paint containing a stain-inhibiting amount of the sulfonium compound defined in claim 1.
Claim 8
Dependent Claim
14 words
Latex paint containing a stain-inhibiting amount of the sulfonium compound defined in claim 3.
Claim 9
Dependent Claim
14 words
Latex paint containing a stain-inhibiting amount of the sulfonium compound defined in claim 4.
Claim 10
Dependent Claim
14 words
Latex paint containing a stain-inhibiting amount of the sulfonium compound defined in claim 5.
Claim 11
Dependent Claim
15 words
The process of claim 2 wherein the paint is an acrylic or polyvinyl acetate latex.
Claim 12
Dependent Claim
14 words
The process of claim 1 wherein X is Cl, HSO4, C6H5SO3, CH3C6H4SO3 or HCO3.
Claim 13
Dependent Claim
14 words
Latex paint containing a stain-inhibiting amount of the sulfonium compound defined in claim 11.
Claim 14
Dependent Claim
17 words
The latex paint of claim 12 wherein the paint is an acrylic or a polyvinyl acetate latex.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |