US3975250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition with reactive modifier for amine group-containing, acid-solubilized resins
Assignee: PPG Industries Inc
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Filing: 1975-02-05
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Granted: 1976-08-17
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Expires: 1995-02-05
Abstract
Abstract Long chain compounds containing both mono-substituted urea linkages, as well as urethane linkages, have been prepared which serve as reactive plasticizers with resins containing epoxy, amine and hydroxyl groups. These materials are particularly useful as reactive plasticizers with cationic electrodepositable compositions containing acid solubilized base groups.
Inventors
- 👤 Joseph R. Marchetti
- 👤 Robert D. Jerabek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4465; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08G18/64; C08G18/6415; C08G18/643; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8038; C09D5/443; C09D5/4453
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
A method of electrocoating an electrically-conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode and an aqueous electrodepositable composition, which electrodepositable composition comprises: A. an acid-solubilized polyamine group containing resin; B. an adduct containing a plurality of capped isocyanate groups, stable at ordinary room temperature but reactive with said polyamine resin at elevated temperatures, said adduct having been formed by the reaction of: 1. a diamine containing an acrylic chain of greater than 5 members between its amine groups and 2. a semi-capped organic polyisocyanate containing an average of about one free isocyanate group.
Claim 2
Independent Claim
100 words
A method of electrocoating an electrically-conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode and an aqueous electrodepositable composition, which electrodepositable composition comprises: A. an acid-solubilized polyamine group containing resin; B. an adduct containing a plurality of capped isocyanate groups, stable at ordinary room temperature but reactive with said polyamine resin at elevated temperatures, said adduct having been formed by the reaction of: 1. a diamine containing an acrylic chain of greater than 5 members between its amine groups and 2. a semi-capped organic polyisocyanate containing an average of about one free isocyanate group.
Claim 3
Dependent Claim
16 words
A method as in claim 1, wherein the diamine is alkylene diamine or a polyoxyalkylene diamine.
Claim 4
Dependent Claim
13 words
A method as in claim 1, wherein the polyamine resin contains hydroxyl groups.
Claim 5
Dependent Claim
16 words
A method as in claim 3, wherein the diamine is alkylene diamine or a polyoxyalkylene diamine.
Claim 6
Dependent Claim
45 words
A method as in claim 1, wherein resin (A) is an acid-solubilized, self-curing, synthetic organic resin containing amino groups, hydroxyl groups and capped isocyanate groups stable at room temperature in the presence of hydroxyl or amino groups and reactive with hydroxyl groups at elevated temperatures.
Claim 7
Dependent Claim
30 words
A method as in claim 5, wherein the isocyanate groups in (A) are capped by an aliphatic alkyl, alkoxyalkyl, cycloaliphatic alkyl or aromatic alkyl monoalcohol, a phenol, or an oxime.
Claim 8
Dependent Claim
30 words
A method as in claim 5, wherein the isocyanate groups and hydroxyl groups are present in a ratio of about 0.5 to about 2.0 latent isocyanate groups per hydroxyl group.
Claim 9
Dependent Claim
18 words
A method as in claim 1 in which the electrodepositable composition additionally comprises a catalyst for urethane formation.
References Cited (Backward Citations)
US3617367A
Cited
US3799854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |