US4136070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodic electrodeposition of paints
Assignee: Morton Coatings Inc
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Filing: 1977-11-21
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Granted: 1979-01-23
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Expires: 1997-11-21
Abstract
Abstract A process for cathodic electrodeposition of paints wherein a layer of protective phosphate salt is initially deposited on a metal substrate followed by an amine-group-containing hydrophobic polymer which is preferably an acrylic-epoxy resin. The amounts of water and phosphoric acid in the deposited paint are very small.
Inventors
- 👤 Isidor Hazan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:28
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/04; C25D13/06; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
126 words
As a composition of matter, a graft copolymer comprising an epoxide grafted onto an acrylic backbone portion and consisting essentially of, by weight based on the graft copolymer, about: a. in the acrylic backbone portion: 15 to 25% of a polymer or copolymer of at least one unit selected from alkyl, aminoalkyl, and hydroxyalkyl acrylates and methacrylates, said copolymer containing 0.02 to 0.1 equivalent of secondary and/or tertiary amine functionality; and b. in the graft: 75 to 85% of a copolymer contributing: 3 to 7% of a glycidyl ester of a tertiary carboxylic acid containing 7 to 9 carbon atoms, and 72 to 80% of a blend of a 55 to 60% condensation polymer of epichlorohydrin and bisphenol-A with 15 to 20% tall oil fatty acids.
Claim 2
Dependent Claim
126 words
As a composition of matter, a graft copolymer comprising an epoxide grafted onto an acrylic backbone portion and consisting essentially of, by weight based on the graft copolymer, about: a. in the acrylic backbone portion: 15 to 25% of a polymer or copolymer of at least one unit selected from alkyl, aminoalkyl, and hydroxyalkyl acrylates and methacrylates, said copolymer containing 0.02 to 0.1 equivalent of secondary and/or tertiary amine functionality; and b. in the graft: 75 to 85% of a copolymer contributing: 3 to 7% of a glycidyl ester of a tertiary carboxylic acid containing 7 to 9 carbon atoms, and 72 to 80% of a blend of a 55 to 60% condensation polymer of epichlorohydrin and bisphenol-A with 15 to 20% tall oil fatty acids.
Claim 3
Dependent Claim
22 words
A graft copolymer of claim 1 also containing in said acrylic backbone portion about 0.01 to 0.05 equivalent of quaternary ammonium functionality.
Claim 4
Dependent Claim
31 words
A graft copolymer of claim 1 containing in said acrylic backbone portion about 0.02 to 0.06 equivalent of secondary and/or tertiary amine and 0.01 to 0.02 equivalent of quaternary ammonium functionality.
Claim 5
Dependent Claim
140 words
A graft copolymer of claim 1 consisting essentially of, by weight based on the graft copolymer, about: a. 17 to 21% of a copolymer contributing: 3 to 5% methyl methacrylate, 4 to 6% butyl acrylate, 1to 4% hydroxyethyl methacrylate, 1 to 3% dimethylamino ethyl methacrylate, and 4 to 6% t-butylamino ethyl methacrylate, graft polymerized with b. 83 to 79% of mixture of about 5% of ##STR5## wherein the R 1 , R 2 and R 3 groups are saturated aliphatic chains which contain a total of 7 to 9 carbon atoms, and at least one of R 1 , R 2 and R 3 is a methyl group, and 74to 78% of a blend of 57 to 60% of a condensation polymer of 27 to 31% epichlorohydrin and 27 to 31% bisphenol-A with 16 to 19% tall oil fatty acids.
Claim 6
Dependent Claim
118 words
A graft copolymer of claim 4 consisting essentially of, by weight based on the graft copolymer, about: a. 19% of a copolymer contributing: 4% methyl methacrylate, 5% butyl acrylate, 3% hydroxyethyl methacrylate, 2% dimethylamino ethyl methacrylate, and 5% t-butylamino ethyl methacrylate, graft polymerized with b. 81% of mixture of about 5% of ##STR6## wherein the R 1 , R 2 and R 3 groups are saturated aliphatic chains which contain a total of 7 to 9 carbon atoms, and at least one of R 1 , R 2 and R 3 is a methyl group, and 76% of a blend of 58.5% of a condensation polymer of 29.25% epichlorohydrin and 29.25% bisphenol-A with 17.5% tall oil fatty acids.
Claim 7
Dependent Claim
39 words
An aqueous coating composition comprising a graft copolymer of claim 1 which has been dissolved in organic solvents, phosphoric acid reacted with the amine groups of the graft copolymer, and a crosslinking agent, said composition being dispersed in water.
Claim 8
Dependent Claim
16 words
An aqueous coating composition of claim 6 containing about 2-3% by weight of the graft copolymer.
Claim 9
Dependent Claim
22 words
An aqueous coating composition of claim 6 which has been adjusted to a pH of 2.0-4.0 by the addition of phosphoric acid.
Claim 10
Dependent Claim
17 words
An aqueous coating composition of claim 6 in which the crosslinking agent is a benzoguanamine formaldehyde resin.
Claim 11
Dependent Claim
25 words
An aqueous coating composition of claim 6 which also contains dissolved dihydrogen phosphate salts of one or more of zinc, iron, calcium, aluminum and magnesium.
Claim 12
Dependent Claim
26 words
An aqueous coating composition of claim 6 which also contains titania pigments which have been added to the graft copolymer before it is dispersed in water.
Claim 13
Dependent Claim
95 words
As a composition of matter, a graft copolymer comprising an epoxide grafted onto an acrylic backbone portion and consisting essentially of, by weight based on the graft copolymer, about: a. in the acrylic backbone portion: 80 to 92% of a polymer or copolymer of at least one unit selected from alkyl, aminoalkyl and hydroxyalkyl acrylates and methacrylates with 0.02 to 0.1 equivalent of secondary and/or tertiary amine functionality; and b. in the graft: 20 to 8% of a graft comonomer which is a glycidyl ester of a tertiary carboxylic acid containing 7 to 9 atoms.
Claim 14
Dependent Claim
95 words
As a composition of matter, a graft copolymer comprising an epoxide grafted onto an acrylic backbone portion and consisting essentially of, by weight based on the graft copolymer, about: a. in the acrylic backbone portion: 80 to 92% of a polymer or copolymer of at least one unit selected from alkyl, aminoalkyl and hydroxyalkyl acrylates and methacrylates with 0.02 to 0.1 equivalent of secondary and/or tertiary amine functionality; and b. in the graft: 20 to 8% of a graft comonomer which is a glycidyl ester of a tertiary carboxylic acid containing 7 to 9 atoms.
Claim 15
Dependent Claim
102 words
A graft copolymer of claim 12 consisting essentially of, by weight based on the graft copolymer, about: a. 85 to 91% of a copolymer contributing: 9 to 11% methyl methacrylate, 42to 46% 2-ethyl hexyl acrylate, 6.5 to 8.5% t-butylaminoethyl methacrylate, 2 to 3% dimethylaminoethyl methacrylate, and 23 to 27% hydroxyethyl methacrylate, graft polymerized with b. 15 to 9% of ##STR7## wherein the R 1 , R 2 and R 3 groups are saturated aliphatic chains which contain a total of 7 to 9 carbon atoms, and at least one of R 1 , R 2 and R 3 is a methyl group.
Claim 16
Dependent Claim
91 words
A graft copolymer of claim 13 consisting essentially of, by weight based on the graft copolymer, about: a. 89% of a copolymer consisting essentially of: 10% methyl methacrylate, 44% 2-ethyl hexyl acrylate, 7.5% t-butylaminoethyl methacrylate, 2.5% dimethylaminoethyl methacrylate, and 25% hydroxyethyl methacrylate, graft copolymerized with b. 11% of ##STR8## wherein the R 1 , R 2 and R 3 groups are saturated aliphatic chains which contain a total of 7 to 9 carbon atoms, and at least one of R 1 , R 2 and R 3 is a methyl group.
Claim 17
Dependent Claim
22 words
A graft copolymer of claim 12 also containing in said acrylic backbone portion about 0.01 to 0.05 equivalent of quaternary ammonium functionality.
Claim 18
Dependent Claim
32 words
A graft copolymer of claim 12 containing in said acrylic backbone portion about 0.02 to 0.08 equivalent of secondary and/or tertiary amine functionality and 0.01 to 0.03 equivalent of quaternary ammonium functionality.
Claim 19
Dependent Claim
39 words
An aqueous coating composition comprising a graft copolymer of claim 12 which has been dissolved in organic solvents, phosphoric acid reacted with the amine groups of the graft copolymer, and a crosslinking agent, said composition being dispersed in water.
Claim 20
Dependent Claim
16 words
An aqueous coating composition of claim 17 containing about 2-3% by weight of the graft copolymer.
Claim 21
Dependent Claim
22 words
An aqueous coating composition of claim 17 which has been adjusted to a pH of 2.0-4.0 by the addition of phosphoric acid.
Claim 22
Dependent Claim
17 words
An aqueous coating composition of claim 17 in which the crosslinking agent is a benzoguanamine formaldehyde resin.
Claim 23
Dependent Claim
25 words
An aqueous coating composition of claim 17 which also contains dissolved dihydrogen phosphate salts of one or more of zinc, iron, calcium, aluminum and magnesium.
Claim 24
Dependent Claim
26 words
An aqueous coating composition of claim 17 which also contains titania pigments which have been added to the graft copolymer before it is dispersed in water.
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |