US4172193A
Expired / Lapsed
US
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Cathodic electrocoating binders
Assignee: BASF SE
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Filing: 1978-09-26
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Granted: 1979-10-23
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Expires: 1998-09-26
Abstract
Abstract Cathodic electrocoating binders based on polycondensation products which contain amino groups and which are, at least partially, in the form of their ammonium salts or quaternary ammonium salts. The polycondensation products containing amino groups are obtained by adduct formation of p-hydroxyacetophenone with polymers containing epoxide groups, followed by reaction of these adducts with formaldehyde and a secondary amine. The electrocoating binders of the invention may be used for coating metallic substrates and give coatings which are particularly corrosion-resistant and adhere particularly firmly.
Inventors
- 👤 Matthias Marx
- 👤 Erich Gulbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C08; C08G; C08G14/00; C08G14/14; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
A cathodic electrocoating binder based on polycondensation products which contain amino groups and which, at least partially, are in the form of their ammonium salts or quaternary ammonium salts, wherein the polycondensation products containing amino groups have been obtained by adduct formation of p-hydroxyacetophenone with polymers containing epoxide groups, followed by reaction of these adducts with formaldehyde and a secondary amine.
Claim 2
Dependent Claim
61 words
A cathodic electrocoating binder based on polycondensation products which contain amino groups and which, at least partially, are in the form of their ammonium salts or quaternary ammonium salts, wherein the polycondensation products containing amino groups have been obtained by adduct formation of p-hydroxyacetophenone with polymers containing epoxide groups, followed by reaction of these adducts with formaldehyde and a secondary amine.
Claim 3
Dependent Claim
25 words
A cathodic electrocoating binder as claimed in claim 1, wherein the polycondensation product has a nitrogen content of from 0.1 to 15 percent by weight.
Claim 4
Dependent Claim
83 words
A cathodic electrocoating binder as claimed in claim 1, wherein the polycondensation product containing amino groups has been obtained by adduct formation of p-hydroxyacetophenone with polymers containing epoxide groups, in the molar ratio of from 0.5:1 to 1:1 (p-hydroxyacetophenone:epoxide group) and reaction of the adduct with a secondary amine and formaldehyde in the molar ratio of from 0.5 to 1 mole of secondary amine, and from 0.5 to 1.2 moles of formaldehyde, in each case per mole of p-hydroxyacetophenone contained in the adduct.
Claim 5
Dependent Claim
18 words
A cathodic electrocoating binder as claimed in claim 1, which contains an added aminoplast resin or phenoplast resin.
Claim 6
Dependent Claim
15 words
A cathodic electrocoating binder as claimed in claim 1, which contains an added epoxy resin.
Claim 7
Dependent Claim
30 words
A cathodic electrocoating binder as claimed in claim 1, wherein the polycondensation product has a nitrogen content of from 0.5 to 10 percent by weight, based on the polycondensation product.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |