US4002582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of coatings
Assignee: BASF Farben und Fasern AG
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Filing: 1974-08-22
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Granted: 1977-01-11
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Expires: 1994-08-22
Abstract
Abstract Improved film-forming organic resin plant aqueous binder replenishment concentrated compositions adapted for dispersing in an aqueous electrocoating bath containing sufficient additional water-soluble amino compound to impart anionic polyelectrolyte behavior in the bath to the resin in the binder concentrate compositions, the binder concentrate compositions comprising: 40-70 percent by weight of cyclized rubber in 60-30 percent by weight of a binder mixture wherein the binder mixture comprises: I. about 10-50 percent by weight of a non-heat reactive phenol-aldehyde resin; and Ii. about 50-90 percent by weight of a copolymer, said copolymer comprising: A. about 50-85 percent by weight of an ester of methacrylic acid or acrylic acid with an alcohol having 1-10 carbon atoms; B. about 5-20 percent by weight of drying oils or drying oil fatty acids containing olefinically unsaturated fatty acids; C. about 5-15 percent by weight of an α,β-olefinically unsaturated carboxylic acid having 3-5 carbon atoms; D. about 3-20 percent by weight of methacrylamide, acrylamide, methylol methacrylamide, methylol acrylamide, an ether of methylol methacrylamide with an alcohol having 1-8 carbon atoms, an ether of methylol acrylamide having 1-8 carbon atoms or a mixture thereof, and optionally E. up to 20 percent by weight of further copolymerizable olefinically unsaturated compounds.
Inventors
- 👤 Peter Fritsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:51
CPC Classifications
C; C09; C09D; C09D115/00; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C09D5/00; C09D5/44; C09D5/4473; C08; C08L; C08L15/00; C08L61/00; C08L61/04; C08L61/06; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
335 words
An aqueous coating composition for the production of electrodepositable coatings followed by air drying or baking at a temperature below 85° C consisting of an aqueous dispersion of a water-insoluble synthetic resin in a mixture dissolved or dispersed in water partly in the form of a salt with ammonia or a water-soluble organic amine, said mixture consisting essentially of: I. about 10 to 50 percent by weight of a non-heat reactive phenolic aldehyde resin; and Ii. about 50 to 90 percent by weight of a copolymer of: A. about 50 to 85 percent by weight of an ester of acrylic or methacrylic acid with an alcohol having one to 10 carbon atoms; B. about 5 to 20 percent by weight of at least one oil containing at least one olefinically unsaturated fatty acid; C. about 5 to 15 percent by weight of a copolymerizable α,β-olefinically unsaturated carboxylic acid having 3 to 5 carbon atoms; and D. about 3 to 20 percent by weight of at least one compound selected from the group consisting of acrylamide, methacrylamide, methylolacrylamide and methylolmethacrylamide and ethers of methyllolacrylamide and methylolmethacrylamide with alcohols having 1 to 8 carbon atoms; wherein the sum of the percentages given under A to D being 100 percent, the improvement comprising said water-insoluble synthetic resin being cyclized rubber and dispersed in the aqueous solution or dispersion of said mixture from I and II, the dispersion being made by dispersing a solution of cyclized rubber in organic solvents in the aqueous solution or dispersion of said mixture from I and II, the ratio of weight between cyclized rubber and the sum of I and II being from about 40-70 percent cyclized rubber to about 0-30 percent of the sum of I and II, said cyclized rubber having a specific gravity of about 0.97-1.02, a melting point of about 135°-150° C and a viscosity of about 700-1050 seconds running time as measured in a viscosimeter at 50 percent solution of analytical benzene according to German Industrial Standard 53,211.
Claim 2
Dependent Claim
335 words
An aqueous coating composition for the production of electrodepositable coatings followed by air drying or baking at a temperature below 85° C consisting of an aqueous dispersion of a water-insoluble synthetic resin in a mixture dissolved or dispersed in water partly in the form of a salt with ammonia or a water-soluble organic amine, said mixture consisting essentially of: I. about 10 to 50 percent by weight of a non-heat reactive phenolic aldehyde resin; and Ii. about 50 to 90 percent by weight of a copolymer of: A. about 50 to 85 percent by weight of an ester of acrylic or methacrylic acid with an alcohol having one to 10 carbon atoms; B. about 5 to 20 percent by weight of at least one oil containing at least one olefinically unsaturated fatty acid; C. about 5 to 15 percent by weight of a copolymerizable α,β-olefinically unsaturated carboxylic acid having 3 to 5 carbon atoms; and D. about 3 to 20 percent by weight of at least one compound selected from the group consisting of acrylamide, methacrylamide, methylolacrylamide and methylolmethacrylamide and ethers of methyllolacrylamide and methylolmethacrylamide with alcohols having 1 to 8 carbon atoms; wherein the sum of the percentages given under A to D being 100 percent, the improvement comprising said water-insoluble synthetic resin being cyclized rubber and dispersed in the aqueous solution or dispersion of said mixture from I and II, the dispersion being made by dispersing a solution of cyclized rubber in organic solvents in the aqueous solution or dispersion of said mixture from I and II, the ratio of weight between cyclized rubber and the sum of I and II being from about 40-70 percent cyclized rubber to about 0-30 percent of the sum of I and II, said cyclized rubber having a specific gravity of about 0.97-1.02, a melting point of about 135°-150° C and a viscosity of about 700-1050 seconds running time as measured in a viscosimeter at 50 percent solution of analytical benzene according to German Industrial Standard 53,211.
Claim 3
Dependent Claim
27 words
The compositions of claim 1, further comprising in said copolymer 0.1 to 20 percent by weight of copolymerizable olefinically unsaturated compounds having 1 to 7 carbon atoms.
Claim 4
Dependent Claim
28 words
The compositions of claim 1, wherein said cyclized rubber and said components I and II have a solids content of about 8 to 16 percent dispersed in water.
Claim 5
Dependent Claim
50 words
A coating material as claimed in claim 1, wherein the copolymer (II) contains: 50-70 percent by weight of (A); 7-15 percent by weight of (B); 5-15 percent by weight of (C); and 5-15 percent by weight of (D); the sum of the percentages given under (A) to (D) being 100.
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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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |