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US4155824A
Expired / Lapsed
US
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Cathodic electrodeposition process employing fatty acid derivatives
Assignee: Wyandotte Paint Products Co
•
Filing: 1977-12-12
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Granted: 1979-05-22
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Expires: 1997-12-12
Abstract
Abstract Described is an organic coating composition particularly useful in cathodic electrodeposition comprising a dispersion, solution or suspension of a coating composition containing an acrylic polymer; the coating composition characterized by being the product of a reaction with a fatty acid and also containing Formula A within said polymer molecule, and said Formula A group being derived from an oxirane ring wherein the coating composition has substantially no oxirane rings therein: Formula A: --CH.sub.2 --C (Z)--CH.sub.2 --N═ wherein Z is hydrogen, hydroxyl, alkyl ether of 1 to 6 carbon atoms; acyloxy of from 1 to 6 carbon atoms; (═O, as in a ketone) --OR'].sub.n H; --OR'].sub.n OH, and --O--R'(CH.sub.2 OH)].sub.n OH where R' is saturated alkylene of from 2 to 4 carbon atoms and n is from 1 to 6.
Inventors
- 👤 Ivan H. Tsou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:05
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C09D5/4411
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
A method of electrodepositing a film forming substance onto a substrate by employing an anode, a cathode, and an electrolyte therebetween comprising the steps: (a) Providing an aqueous electrolyte containing an organic coating composition comprising a dispersion, solution or suspension of a coating composition containing an acrylic polymer; the coating composition characterized as containing (a) an ester resulting from reacting the acrylic polymer with a fatty acid, and (b) Formula A within said polymer molecule, and said Formula A group being derived from an oxirane ring, wherein the coating composition has substantially no oxirane rings therein: Formula A: --CH.sub.2 --C (Z)--CH.sub.2 --N═ wherein Z is independently selected from the group hydrogen, hydroxyl, alkyl ether having from 1 to 6 carbon atoms; acyloxy having from 1 to 6 carbon atoms; ##STR9## wherein R' is a saturated alkylene group of from 2 to 4 carbon atoms and n is a number from 1 to 6; (b) Closing the circuit between the anode and the cathode; and (Depositing the film forming composition onto the cathodic substrate.
Claim 2
Independent Claim
173 words
A method of electrodepositing a film forming substance onto a substrate by employing an anode, a cathode, and an electrolyte therebetween comprising the steps: (a) Providing an aqueous electrolyte containing an organic coating composition comprising a dispersion, solution or suspension of a coating composition containing an acrylic polymer; the coating composition characterized as containing (a) an ester resulting from reacting the acrylic polymer with a fatty acid, and (b) Formula A within said polymer molecule, and said Formula A group being derived from an oxirane ring, wherein the coating composition has substantially no oxirane rings therein: Formula A: --CH.sub.2 --C (Z)--CH.sub.2 --N═ wherein Z is independently selected from the group hydrogen, hydroxyl, alkyl ether having from 1 to 6 carbon atoms; acyloxy having from 1 to 6 carbon atoms; ##STR9## wherein R' is a saturated alkylene group of from 2 to 4 carbon atoms and n is a number from 1 to 6; (b) Closing the circuit between the anode and the cathode; and (Depositing the film forming composition onto the cathodic substrate.
Claim 3
Dependent Claim
10 words
An article produced according to the process of claim 1.
Claim 4
Dependent Claim
70 words
The method of claim 1 wherein the coating composition is comprised of a resin portion characterized as follows: ______________________________________
Components Parts by Weight
______________________________________
(a) total monomer portion
used to produce polymer
about 60 to about 80
(b) fatty acid portion about 5 to about 25
(c) Formula A producing amine portion
balance
wherein the total resin components equals 100 parts on a
pigment, filler and catalyst free basis.
______________________________________
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the monomer containing the oxirane ring comprises about 20% to about 50% by weight of the total monomer used to produce the acrylic polymer.
Claim 6
Dependent Claim
9 words
The method of claim 1 wherein Z is hydroxyl.
Claim 7
Dependent Claim
36 words
The method of claim 1 wherein the composition is comprised of a resin wherein the number of equivalents of reactant carboxylic acid employed is no greater than the number of equivalents of reactant oxirane ring employed.
Claim 8
Dependent Claim
30 words
The method of claim 6 wherein the coating composition is comprised of a resin having carboxylic acid equivalents and oxirane ring equivalents in a ratio of 0.1 to 0.7::acid:oxirane ring.
Claim 9
Dependent Claim
44 words
The method of claim 1 wherein the acrylic polymer is characterized as the reaction product resulting from reacting an acrylic polymer containing more than one oxirane ring with a fatty acid and reacting the product of that reaction with a primary or secondary amine.
References Cited (Backward Citations)
US4093594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |