US4292155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic electrodeposition employing novel mercapto chain extended products
Assignee: PPG Industries Inc
•
Filing: 1980-10-15
•
Granted: 1981-09-29
•
Expires: 2000-10-15
Abstract
Abstract Cationic electrodeposition employing novel chain-extended cationic resinous products is disclosed. The products are formed by chain extending polyepoxides with polymercapto compounds and reacting with amines to provide cationic groups.
Inventors
- 👤 Joseph F. Bosso
- 👤 Richard M. Nugent
- 👤 Joseph E. Plasynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:54
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/182; C08G59/40; C08G59/50; C08G59/56; C08G59/62; C08G59/64; C08G59/66; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A method for coating a conductive substrate serving as a cathode which method comprises passing electric current between an anode and a cathode in electrical contact with an aqueous resinous dispersion in which the resin comprises the reaction product of: (A) a polyepoxide having a 1,2-epoxy equivalency greater than one, (B) a polymercapto compound, and (C) an amine; the equivalent ratio of mercapto groups in (B) to epoxide groups in (A) being less than one; said reaction product containing cationic groups which are derived from the organic amine.
Claim 2
Independent Claim
88 words
A method for coating a conductive substrate serving as a cathode which method comprises passing electric current between an anode and a cathode in electrical contact with an aqueous resinous dispersion in which the resin comprises the reaction product of: (A) a polyepoxide having a 1,2-epoxy equivalency greater than one, (B) a polymercapto compound, and (C) an amine; the equivalent ratio of mercapto groups in (B) to epoxide groups in (A) being less than one; said reaction product containing cationic groups which are derived from the organic amine.
Claim 3
Dependent Claim
17 words
The method of claim 1 in which the polyepoxide is a polyglycidyl ether of a cyclic polyol.
Claim 4
Dependent Claim
13 words
The method of claim 2 in which the cyclic polyol is a polyphenol.
Claim 5
Dependent Claim
16 words
The method of claim 1 in which the polyepoxide has a molecular weight greater than 350.
Claim 6
Dependent Claim
15 words
The method of claim 1 in which the polymercapto compound is a polymeric polymercapto compound.
Claim 7
Dependent Claim
16 words
The method of claim 1 or 5 in which the polymercapto compound is a dimercapto compound.
Claim 8
Dependent Claim
23 words
The method of claim 5 in which the polymeric polymercapto compound is the reaction product of a polymeric polyol with a mercaptocarboxylic acid.
Claim 9
Dependent Claim
22 words
The method of claim 7 in which the polymeric polyol is selected from the class consisting of polyester diols and polyether diols.
Claim 10
Dependent Claim
20 words
The method of claim 1 in which the polymeric polymercapto compound has a molecular weight of from 200 to 3000.
Claim 11
Dependent Claim
16 words
The method of claim 1 in which the organic amine is a primary and/or secondary amine.
Claim 12
Dependent Claim
19 words
The method of claim 1 in which a portion of the organic amine is a ketimine of a polyamine.
Claim 13
Dependent Claim
13 words
The method of claim 1 in which the amine is a tertiary amine.
Claim 14
Dependent Claim
26 words
The method of claim 1 in which the equivalent ratio of mercapto groups in (B) to polyepoxide groups in (A) is about 0.1 to about 0.8:1.
Claim 15
Dependent Claim
11 words
The method of claim 1 in combination with a curing agent.
Claim 16
Dependent Claim
14 words
The method of claim 14 in which the curing agent is a capped polyisocyanate.
References Cited (Backward Citations)
US3732309A
Cited
US3803089A
Cited
US4035272A
Cited
US4029621A
Cited
US4104147A
Cited
US4035274A
Cited
US4092293A
Cited
US4136086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |