US4065425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of non-aqueous dispersion coatings
Assignee: BASF Corp
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Filing: 1975-10-30
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Granted: 1977-12-27
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Expires: 1995-10-30
Abstract
Abstract Pigmented non-aqueous dispersed polymer compositions containing melamine-formaldehyde resin are disclosed. The dispersed polymer and the soluble stabilizer polymer are both cross-linkable with the malamine resin to give improved thermosetting paints, especially for metal surfaces such as automobile bodies.
Inventors
- 👤 George W. Bussell
- 👤 Martin W. Kisel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:51
CPC Classifications
C; C09; C09D; C09D151/00; C09D151/003
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
184 words
The method of preparing a storage stable, pigmented, non-aqueous dispersed polymer coating composition comprising: a. preparing a volatile organic solvent solution containing 40 to 60% by weight of a stabilizer copolymer consisting essentially of A. 40 to 70% of at least one solubilizing monomer of the group consisting of alkyl and cycloalkyl esters of acrylic and methacrylic acids and alcohols wherein the alkyl or cycloalkyl groups contain 4 or more carbon atoms, B. 15 to 20% by weight of a reactive group containing monomer of the group consisting of hydroxyethyl, hydroxypropyl and glycidyl esters of acrylic and methacrylic acids, C. 0.5 to 1.5% by weight of an α, β-unsaturated carboxylic acid and D. 15 to 20% by weight of styrene or a derivative of styrene and by copolymerizing (A), (B), (C) and (D) in a volatile solvent comprised predominantly of aliphatic hydrocarbons having a boiling point in the range of 130° to 140° C. b. forming a composition comprising a dispersion of copolymer in the solution of stabilizer copolymer of (a) by copolymerizing a monomer mixture in said solution, said monomer mixture consisting of
Claim 2
Independent Claim
184 words
The method of preparing a storage stable, pigmented, non-aqueous dispersed polymer coating composition comprising: a. preparing a volatile organic solvent solution containing 40 to 60% by weight of a stabilizer copolymer consisting essentially of A. 40 to 70% of at least one solubilizing monomer of the group consisting of alkyl and cycloalkyl esters of acrylic and methacrylic acids and alcohols wherein the alkyl or cycloalkyl groups contain 4 or more carbon atoms, B. 15 to 20% by weight of a reactive group containing monomer of the group consisting of hydroxyethyl, hydroxypropyl and glycidyl esters of acrylic and methacrylic acids, C. 0.5 to 1.5% by weight of an α, β-unsaturated carboxylic acid and D. 15 to 20% by weight of styrene or a derivative of styrene and by copolymerizing (A), (B), (C) and (D) in a volatile solvent comprised predominantly of aliphatic hydrocarbons having a boiling point in the range of 130° to 140° C. b. forming a composition comprising a dispersion of copolymer in the solution of stabilizer copolymer of (a) by copolymerizing a monomer mixture in said solution, said monomer mixture consisting of
Claim 3
Dependent Claim
132 words
10 to 30% by weight of a reactive group containing monomer of the group consisting of hydroxyethyl, hydroxypropyl and glycidyl esters of acrylic and methacrylic acids, 2. 0 to 3% by weight of an α, β-unsaturated carboxylic acid, 3. 30 to 80% by weight of a lower alkyl ester of acrylic or methacrylic acid and 4. 0 to 50% by weight of styrene or a derivative of styrene, and the total solids in said composition consists of 50-90% by weight of dispersed copolymer and 10 to 50% by weight of dissolved polymer and c. mixing the dispersion obtained in (b) with pigment and aminoplast resin to obtain paint composition containing 30 to 50 % solids with a resin to pigment ratio of from about 50 to 1 to about 3.5 to 1.
Claim 4
Dependent Claim
132 words
10 to 30% by weight of a reactive group containing monomer of the group consisting of hydroxyethyl, hydroxypropyl and glycidyl esters of acrylic and methacrylic acids, 2. 0 to 3% by weight of an α, β-unsaturated carboxylic acid, 3. 30 to 80% by weight of a lower alkyl ester of acrylic or methacrylic acid and 4. 0 to 50% by weight of styrene or a derivative of styrene, and the total solids in said composition consists of 50-90% by weight of dispersed copolymer and 10 to 50% by weight of dissolved polymer and c. mixing the dispersion obtained in (b) with pigment and aminoplast resin to obtain paint composition containing 30 to 50 % solids with a resin to pigment ratio of from about 50 to 1 to about 3.5 to 1.
Claim 5
Dependent Claim
53 words
A method as in claim 1 wherein (A) of the stabilizer copolymer consists of: 40 to 70% by weight of at least one solubilizing monomer of the group consisting of acrylic acid and methacrylic acid ester of C 4 or higher aliphatic and cyclo aliphatic alcohols, at least 50% which is lauryl methacrylate.
Claim 6
Dependent Claim
15 words
A method as in claim 2 wherein (B) of the stabilizers copolymer is hydroxypropyl methacrylate.
Claim 7
Dependent Claim
35 words
A method as in claim 1 wherein the aminoplast resin added in step (C) is melamine-formaldehyde resin, and the pigment is added as a dispersion in an organic solvent solution of a thermosetting acrylic copolymer.
Claim 8
Dependent Claim
39 words
A method as in claim 4 wherein the resin content of the coating consists of: i. 10 to 50% by weight of dispersed polymer ii. 30 to 35% melamine-formaldehyde resin and iii. dissolved thermosetting acrylic resin to total 100%.
Claim 9
Dependent Claim
82 words
A method as in claim 5 wherein the dispersed polymer consists of a copolymer of (1) 10 to 30% by weight of a reactive group containing monomer of the group consisting of hydroxyethyl, hydroxypropyl and glycidyl esters of acrylic and methacrylic acids, (2) 0 to 3% of an α, β-unsaturated carboxylic acid (3) 30 to 80% by weight of a lower alkyl ester of acrylic or methacrylic acid and (4) 0 to 50% by weight of styrene or a derivative of styrene.
Claim 10
Dependent Claim
17 words
A method as in claim 6 wherein the reactive group containing monomer of (1) is hydroxypropyl methacrylate.
Claim 11
Dependent Claim
17 words
A method as in claim 6 wherein the reactive group containing monomer of (1) is hydroxyethyl acrylate.
Claim 12
Dependent Claim
47 words
A method as in claim 6 14 wherein the dissolved thermosetting acrylic resin is a copolymer wherein (A) is at least 50% lauryl methacrylate, (B) is hydroxypropyl methacrylate, (C) is 0.5 to 1.5% by weight of acrylic acid, and (D) is 15 to 20% weight of styrene.
Claim 13
Dependent Claim
48 words
A method as in claim 9 wherein the dispersed polymer consists of (1) 10 to 30% hydroxypropyl methacrylate, (2) 0.5 to 2.5% by weight of acrylic acid (3) 40 to 60% by weight of lower alkyl ester of acrylic or methacrylic acid and (4) 0 to 50% styrene.
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |