US3919145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemistry and process for a stain resistant aqueous house paint free of heavy metals
Assignee: Individual
•
Filing: 1973-07-23
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Granted: 1975-11-11
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Expires: 1993-07-23
Abstract
Abstract Coating compositions suitable for use as house paints resistant to stains extractable from redwood, cedar and other wood substrates are prepared by a process characterized by the essential stages of (1) emulsifying under alkaline conditions a film-forming oxidatively curable oil or alkyd modified polyurethane, (2) blending therewith a copolymeric or homopolymeric vinyl acetate or acylic latex and (3) incorporating into the mixture aluminum chlorhydrate in the proportion of 1020% by weight of the polyurethane polymer.
Inventors
- 👤 Paul S Eckhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/06; B05D7/08; C; C08; C08K; C08K3/00; C08K3/18; C08L; C08L31/00; C08L31/02; C08L31/04; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L75/00; C08L75/04; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/08; C09D175/00; C09D175/04; C08L75/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
A COMPOSITION FOR THE PAINTING OR REPAINTING OF STAINING WOODS, SAID COMPOSITION CONTAINING AN AQUEOUS RESIN BINDER FORMED BY BLENDING (1) AN AQUEOUS ALKALINE EMULSION OF A POLYURETHANE RESIN BASED ON A DRYING OIL AND (2) AN AQUEOUS DISPERSION OF A FILM-FORMING INTERPOLYMER USEFUL AS A PAINT VEHICLE, SAID COMPOSITION BEING FURTHER CHARACTERIZED BY THE INCORPORATION OF ALUMINUM CHLORHYDRATE INTO SAID MIXED RESIN BINDER.
Claim 2
Dependent Claim
64 words
A COMPOSITION FOR THE PAINTING OR REPAINTING OF STAINING WOODS, SAID COMPOSITION CONTAINING AN AQUEOUS RESIN BINDER FORMED BY BLENDING (1) AN AQUEOUS ALKALINE EMULSION OF A POLYURETHANE RESIN BASED ON A DRYING OIL AND (2) AN AQUEOUS DISPERSION OF A FILM-FORMING INTERPOLYMER USEFUL AS A PAINT VEHICLE, SAID COMPOSITION BEING FURTHER CHARACTERIZED BY THE INCORPORATION OF ALUMINUM CHLORHYDRATE INTO SAID MIXED RESIN BINDER.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the oil-based polyurethane resin comprises 10-20% of the total resinous binder.
Claim 4
Dependent Claim
28 words
The composition of claim 2 wherein the oil-based polyurethane is a reaction product of toluene diisocyanate with the alcoholysis product of a drying oil and an polyhydric alcohol.
Claim 5
Dependent Claim
23 words
The composition of claim 3 in which the drying oil is selected from the group consisting of linseed, safflower, walnut and soybean oil.
Claim 6
Dependent Claim
39 words
The composition of claim 2 wherein the oil-based polyurethane is a reaction product of toluene diisocyanate and a hydroxyl group-containing alkyd resin containing an oxidatively drying oil selected from the group consisting of linseed, safflower, walnut and soybean oils.
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein the film-forming interpolymer is a homopolymeric or copolymeric vinyl acetate latex.
Claim 8
Dependent Claim
52 words
The composition of claim 6 wherein the film-forming interpolymer is the copolymer of vinyl acetate with one or more copolymerizable monomers chosen from the group consisting of butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, dibutyl maleate, di-isobutyl maleate, di-2-ethylhexyl maleate, dibutyl fumarate, diisobutyl fumarate, di-2-ethylhexyl fumarate, vinyl ester of versatic acid, and ethylene.
Claim 9
Dependent Claim
13 words
The composition of claim 1 wherein the film-forming interpolymer is a 100%-acrylic latex.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein the polyurethane resin is dissolved in a maximum of 25% its weight of hydrocarbon solvent.
Claim 11
Dependent Claim
20 words
The composition of claim 9 wherein the hydrocarbon solvent is selected from the group consisting of xylene and mineral spirits.
Claim 12
Dependent Claim
27 words
A composition of claim 9 wherein the aluminum chlorohydrate is incorporated as a composition formed by blending with surface active agents, a glycol and a defoaming agent.
Claim 13
Dependent Claim
16 words
The composition of claim 1 wherein the aluminum chlorohydrate comprises 8-10% of the total vehicle solids.
Claim 14
Dependent Claim
19 words
A composition of claim 1 in which the pH of the finished paint is maintained between 9.5 and 10.5.
Claim 15
Dependent Claim
36 words
A composition for painting wood surfaces containing an aluminum chlorhydrate compound, in an amount up to 10% of the total vehicle solids, and an alkaline emulsion of a polyurethane resin or solution of a polyurethane resin.
Claim 16
Dependent Claim
36 words
A composition for painting wood surfaces containing an aluminum chlorhydrate compound, in an amount up to 10% of the total vehicle solids, and an alkaline emulsion of a polyurethane resin or solution of a polyurethane resin.
Claim 17
Dependent Claim
79 words
The process of preparing a bleed resistant paint containing the essential steps of (1) blending an alkaline emulsion of a polyurethane resin or solution thereof in a hydrocarbon solvent with an aqueous dispersion of a filogenic interpolymer suitable as a paint vehicle and (2) incorporating into said blend a composition containing aluminum chlorhydrate in an amount up to 10% of total vehicle solids, surface active agents and defoamers dispersed in a medium consisting of ethylene glycol or propylene glycol.
Claim 18
Dependent Claim
79 words
The process of preparing a bleed resistant paint containing the essential steps of (1) blending an alkaline emulsion of a polyurethane resin or solution thereof in a hydrocarbon solvent with an aqueous dispersion of a filogenic interpolymer suitable as a paint vehicle and (2) incorporating into said blend a composition containing aluminum chlorhydrate in an amount up to 10% of total vehicle solids, surface active agents and defoamers dispersed in a medium consisting of ethylene glycol or propylene glycol.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |