US4191674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zwitterion-containing compositions
Assignee: PPG Industries Inc
•
Filing: 1977-10-25
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Granted: 1980-03-04
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Expires: 1997-10-25
Abstract
Abstract Synthetic resins which are water-dispersible Zwitterion-containing resins and containing chemically-bound quaternary ammonium base groups can be dissolved or dispersed in water to provide aqueous coating compositions. Such compositions in which these resins are the major resinous component can be applied by electrodeposition and deposit on the cathode to provide coatings of improved properties including a high degree of resistance to corrosion or staining.
Inventors
- 👤 Marco Wismer
- 👤 Joseph F. Bosso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
An ungelled, inherently water-dispersible, substantially epoxy group-free, synthetic organic resin containing Zwitterions, said Zwitterions consisting of a quaternary ammonium base group and an acid anion, said organic resin being derived from an epoxy resinous material.
Claim 2
Dependent Claim
35 words
An ungelled, inherently water-dispersible, substantially epoxy group-free, synthetic organic resin containing Zwitterions, said Zwitterions consisting of a quaternary ammonium base group and an acid anion, said organic resin being derived from an epoxy resinous material.
Claim 3
Dependent Claim
15 words
A resin as in claim 1 in which the acid anion is a carboxyl group.
Claim 4
Dependent Claim
24 words
A resin as in claim 1 wherein the resin is selected from the group consisting of vinyl addition polymers, polyethers, polyurethanes, polyesters and polyamides.
Claim 5
Dependent Claim
17 words
A resin as in claim 1 which contains about 0.05 percent to about 16 percent quaternary nitrogen.
Claim 6
Dependent Claim
24 words
The ungelled, inherently water-dispersible, substantially epoxy group-free, synthetic organic resin containing Zwitterions of claim 1 in which the epoxy resinous material is a polyepoxide.
Claim 7
Dependent Claim
35 words
An ungelled, inherently water-dispersible, substantially epoxy group-free, synthetic organic resin containing Zwitterions, said Zwitterions consisting of a quaternary ammonium base group and a carboxyl group, said organic resin being derived from an epoxy resinous material.
Claim 8
Dependent Claim
35 words
An ungelled, inherently water-dispersible, substantially epoxy group-free, synthetic organic resin containing Zwitterions, said Zwitterions consisting of a quaternary ammonium base group and a carboxyl group, said organic resin being derived from an epoxy resinous material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |