US4169086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersion paint having a high wet adhesion and process for preparing same
Assignee: Hoechst AG
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Filing: 1977-11-07
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Granted: 1979-09-25
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Expires: 1997-11-07
Abstract
Abstract Emulsifier-containing plastics dispersions which serve as a binder for dispersion paints, should contain polymers forming a film at room temperature and having a high wet adhesion. Suitable polymers are prepared by polymerization of olefinically unsaturated monomers initiated by free radical-forming agents, especially in the presence of an emulsifier. As emulsifier there is used a salt of an acyl ester of the hydroxymethane-phosphonic acid. The emulsifier may remain in the dispersion ready-for-use without involving disadvantages for the wet adhesion.
Inventors
- 👤 Ernst Nolken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:46
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
An aqueous dispersion paint having relatively high wet adhesion, said paint comprising an aqueous dispersion of a film-forming polymer which is a homopolymer or copolymer of one or more monomers selected from vinyl esters, acrylic and methacrylic acid esters, styrene, vinyl halides, vinyl ethers, diolefins, α-olefins and monomers containing nitrile groups; an emulsifier; and a pigment dispersed in said aqueous dispersion; said emulsifier being a salt of an acyl ester of hydroxymethane phosphonic acid having the formula: ##STR2## in which R is a hydrocarbon radical having 5 to 23 carbon atoms and being present to the extent of 0.1 to 5% by weight of said monomers.
Claim 2
Dependent Claim
106 words
An aqueous dispersion paint having relatively high wet adhesion, said paint comprising an aqueous dispersion of a film-forming polymer which is a homopolymer or copolymer of one or more monomers selected from vinyl esters, acrylic and methacrylic acid esters, styrene, vinyl halides, vinyl ethers, diolefins, α-olefins and monomers containing nitrile groups; an emulsifier; and a pigment dispersed in said aqueous dispersion; said emulsifier being a salt of an acyl ester of hydroxymethane phosphonic acid having the formula: ##STR2## in which R is a hydrocarbon radical having 5 to 23 carbon atoms and being present to the extent of 0.1 to 5% by weight of said monomers.
Claim 3
Dependent Claim
18 words
An aqueous dispersion paint according to claim 1 wherein R in the formula for the emulsifier is lauryl.
Claim 4
Dependent Claim
122 words
A process for preparing an aqueous dispersion paint having improved wet adhesion which comprises preparing an aqueous dispersion of a homopolymer or copolymer of one or more monomers selected from vinyl esters, acrylic acid esters, methacrylic acid esters, styrene, vinyl halides, vinyl ethers, diolefins, α-olefins, and monomers containing nitrile groups, in the presence of a free radical-forming initiator and an emulsifier which is a salt of an acyl ester of the hydroxymethane phosphonic acid of the formula ##STR3## in which R is a hydrocarbon radical having from 5 to 23 carbon atoms, said emulsifier being present to the extent of 0.1 to 5% by weight of said monomers, and incorporating a pigment in the resulting dispersion to form said aqueous dispersion paint.
Claim 5
Dependent Claim
122 words
A process for preparing an aqueous dispersion paint having improved wet adhesion which comprises preparing an aqueous dispersion of a homopolymer or copolymer of one or more monomers selected from vinyl esters, acrylic acid esters, methacrylic acid esters, styrene, vinyl halides, vinyl ethers, diolefins, α-olefins, and monomers containing nitrile groups, in the presence of a free radical-forming initiator and an emulsifier which is a salt of an acyl ester of the hydroxymethane phosphonic acid of the formula ##STR3## in which R is a hydrocarbon radical having from 5 to 23 carbon atoms, said emulsifier being present to the extent of 0.1 to 5% by weight of said monomers, and incorporating a pigment in the resulting dispersion to form said aqueous dispersion paint.
Claim 6
Dependent Claim
30 words
Process as claimed in claim 3, which comprises using the emulsifier in an amount of from 0.1 to 5% by weight, calculated on the total amount of the monomers used.
Claim 7
Dependent Claim
24 words
Process as claimed in claim 23, which comprises using as emulsifier the ammonium, lithium, sodium, potassium or tetramethylammonium salt of the acylated hydroxymethanephosphonic acid.
Claim 8
Dependent Claim
40 words
Process as claimed in claim 3, which comprises using as emulsifier a salt of the acylated hydroxymethane-phosphonic acid, which has been prepared by neutralization of the acid to obtain a pH of the aqueous solution of from 5 to 6.8.
Claim 9
Dependent Claim
41 words
Process as claimed in claim 3, which comprises adding the emulsifier in an amount of from 0.1 to 0.3% by weight, calculated on the total quantity of the monomers used, at the beginning of the polymerization and adding the rest lateron.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |