Patent US1651567A successfully refreshed from Google Patents.
US4007154A
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US
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Novel pigment paste for cationic electrodeposition
Assignee: PPG Industries Inc
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Filing: 1975-08-01
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Granted: 1977-02-08
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Expires: 1995-08-01
Abstract
Abstract A pigment paste suitable for use in cationic electrodeposition is disclosed. The paste contains pigment dispersed in a resinous vehicle which is the reaction product of an epoxy-containing organic material and an organic tertiary amine acid salt containing blocked isocyanate groups capable of unblocking at elevated temperature.
Inventors
- 👤 Karl F. Schimmel
- 👤 Percy E. Pierce
- 👤 James E. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8041; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/40; C08G18/58; C08G18/8061; C08G18/8064; C08G18/807; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4453; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A pigment paste suitable for cationic electrodeposition comprising: A. a resinous vehicle comprising the acidified reaction product of: 1. an organic polyepoxide material 2. an organic tertiary amine containing blocked isocyanate groups capable of unblocking at elevated temperature; B. a pigment dispersed therein; the pigment to resinous vehicle weight ratio being at least 2:1.
Claim 2
Dependent Claim
54 words
A pigment paste suitable for cationic electrodeposition comprising: A. a resinous vehicle comprising the acidified reaction product of: 1. an organic polyepoxide material 2. an organic tertiary amine containing blocked isocyanate groups capable of unblocking at elevated temperature; B. a pigment dispersed therein; the pigment to resinous vehicle weight ratio being at least 2:1.
Claim 3
Dependent Claim
19 words
The pigment paste of claim 1 in which the organic polyepoxide material is a polyglycidyl ether of a polyphenol.
Claim 4
Dependent Claim
13 words
The pigment paste of claim 2 in which the polyphenol is Bisphenol A.
Claim 5
Dependent Claim
21 words
The pigment paste of claim 1 in which (2) is the adduct of a hydroxyl-containing tertiary amine and a half-capped diisocyanate.
Claim 6
Dependent Claim
26 words
The pigment paste of claim 1 in which the isocyanate in (2) is blocked with a member selected from the class consisting of phenol or oximes.
References Cited (Backward Citations)
US3936405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |