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US4148704A
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Method for cathodic electrodeposition of coating compositions containing Diels-Alder adducts
Assignee: Wyandotte Paint Products Co
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Filing: 1977-12-12
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Granted: 1979-04-10
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Expires: 1997-12-12
Abstract
Abstract Described herein is an organic coating composition particularly useful in cathodic electrodeposition comprising a dispersion, solution or suspension of a coating composition characterized by (a) a reaction product of a conjugated fatty acid ester and an acrylic containing monomer, preferably containing oxirane rings; and (b) Formula A within the molecule, being the reaction product of reacting an oxirane ring and an amine; wherein Formula A is: --CH.sub.2 --C(Z)--CH.sub.2 --N═ wherein Z is hydrogen, hydroxyl, alkoxy of 1 to 6 carbon atoms; acyloxy of from 1 to 6 carbon atoms; (═O, as in a ketone), --OR'-- n H; --OR'-- n OH, and --OR' (CH 2 OH)-- n OH, wherein R' is a saturated alkylene group of from 2 to 4 carbon atoms and n is a number from 1 to 6. Also described is a method of electrodepositing coating compositions containing said adducts onto a cathode.
Inventors
- 👤 Ivan H. Tsou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
A method of electrocoating a film forming substance onto a substrate by employing an anode, a cathode and an electrolyte therebetween comprising the steps: (1) Providing an aqueous electrolyte containing an organic coating composition comprising a dispersion, solution or suspension of a coating composition characterized by: (a) the reaction product of a conjugated fatty acid ester and an acrylic containing monomer; and (b) Formula A within the molecule and being the reaction product of reacting an amine with an oxirane ring; wherein Formula A is: --CH.sub.2 --C(Z)--CH.sub.2 --N═ wherein Z is independently selected from the group consisting of hydrogen, hydroxyl, alkoxy of from one to 6 carbon atoms; acyloxy of from one to 6 carbon atoms; (═O),--OR'-- n H, --OR'-- n OH, and --OR'(CH 2 OH)-- n OH; wherein R' is a saturated alkylene of from 2 to 4 carbon atoms and n is a number from 1 to 6; (2) Closing the circuit between the anode and the cathode; and (3) Depositing the film forming composition onto the cathodic substrate.
Claim 2
Independent Claim
171 words
A method of electrocoating a film forming substance onto a substrate by employing an anode, a cathode and an electrolyte therebetween comprising the steps: (1) Providing an aqueous electrolyte containing an organic coating composition comprising a dispersion, solution or suspension of a coating composition characterized by: (a) the reaction product of a conjugated fatty acid ester and an acrylic containing monomer; and (b) Formula A within the molecule and being the reaction product of reacting an amine with an oxirane ring; wherein Formula A is: --CH.sub.2 --C(Z)--CH.sub.2 --N═ wherein Z is independently selected from the group consisting of hydrogen, hydroxyl, alkoxy of from one to 6 carbon atoms; acyloxy of from one to 6 carbon atoms; (═O),--OR'-- n H, --OR'-- n OH, and --OR'(CH 2 OH)-- n OH; wherein R' is a saturated alkylene of from 2 to 4 carbon atoms and n is a number from 1 to 6; (2) Closing the circuit between the anode and the cathode; and (3) Depositing the film forming composition onto the cathodic substrate.
Claim 3
Dependent Claim
22 words
The method of claim 2 wherein the fatty acid ester is obtained by the reaction between a fatty acid and a polyol.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the composition is substantially free of oxirane rings.
Claim 5
Dependent Claim
9 words
The method of claim 3 wherein Z is hydroxyl.
Claim 6
Dependent Claim
15 words
The method of claim 1 further comprising an effective amount of a nitrogenous cross-linking composition.
Claim 7
Dependent Claim
71 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 30 to about 60
b) fatty acid ester portion
about 30 to about 50
c) Formula A producing amine
portion balance
______________________________________ wherein the total resin components equals 100 parts (on a pigment, filler and catalyst free basis).
Claim 8
Dependent Claim
24 words
The method of claim 1 wherein the acrylic monomer comprises about 10 to about 40% of the total resin portion of the coating composition.
Claim 9
Dependent Claim
9 words
The method of claim 1 wherein Z is hydroxyl.
Claim 10
Dependent Claim
10 words
An article produced according to the process of claim 1.
Claim 11
Dependent Claim
45 words
The method of claim 1 wherein the reaction between the fatty acid ester and the acrylic containing monomer is a Diels-Alder reaction as the first step for preparing the coating composition and the second step is reacting said Diels-Alder reaction product with an alkanol amine.
References Cited (Backward Citations)
US3799854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |