Patent US2554773A successfully refreshed from Google Patents.
Patent US4477642A successfully refreshed from Google Patents.
US4477642A
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US
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Selfcrosslinking heat-hardenable binder
Assignee: BASF Farben und Fasern AG
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Filing: 1983-08-24
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Granted: 1984-10-16
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Expires: 2003-08-24
Abstract
Abstract The invention relates to a selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups in the form of carbalkoxymethyl ester groups and is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin.
Inventors
- 👤 Michael Geist
- 👤 Horst Diefenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4284; C08G59/50; C08G59/56; C08G59/58; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C09D5/4442; C09D5/4446; C09D5/4488; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
49 words
A selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups and which is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin, wherein the esterified carboxyl groups are carbalkoxymethyl ester groups.
Claim 2
Dependent Claim
49 words
A selfcrosslinking heat-hardenable binder, in particular for electropaints, which is based on an organic synthetic resin which contains hydroxyl groups and esterified carboxyl groups and which is water-dilutable by partial or complete acid-neutralization of amino groups present in the resin, wherein the esterified carboxyl groups are carbalkoxymethyl ester groups.
Claim 3
Dependent Claim
29 words
A binder as claimed in claim 1, wherein the synthetic resin contains 1 to 5 hydroxyl groups and 1 to 5 carbalkoxymethyl ester groups per 1,000 molecular weight units.
Claim 4
Dependent Claim
24 words
A binder as claimed in claim 2, wherein the equivalence ratio between the hydroxyl groups and the carbalkoxymethyl ester groups is 2:1 to 1:2.
Claim 5
Dependent Claim
92 words
A binder as claimed in claim 3, wherein the synthetic resin is an epoxy resin which has been prepared by reacting a polyglycidyl ester or ether with a compound which bears 2 groups which are reactive toward epoxide groups and at least one carbalkoxymethyl ester group to give an intermediate product having terminal epoxide groups and reacting these epoxide groups, by ring-opening, with a primary or secondary amine, a ketimine or aldimine which has a hydrogen atom at the nitrogen or with an amino alcohol which is blocked at the nitrogen atom.
Claim 6
Dependent Claim
87 words
A binder as claimed in claim 4, wherein the synthetic resin is a polyurethane resin which has been prepared by reacting a diisocyanate with a compound which bears groups which are reactive toward isocyanate groups and at least one carbalkoxymethyl ester group to give an intermediate product having terminal isocyanate groups and reacting these isocyanate groups with a primary or secondary amine, a ketimine or aldimine which has a hydrogen atom at the nitrogen atom or with an amino alcohol which is blocked at the nitrogen atom.
Claim 7
Dependent Claim
37 words
A process for preparing a binder, in particular for electropaints, which comprises reacting a polyglycidyl ester or ether with a compound which bears groups which are reactive toward epoxide groups and at least one carbalkoxymethyl ester group.
Claim 8
Dependent Claim
37 words
A process for preparing a binder, in particular for electropaints, which comprises reacting a polyglycidyl ester or ether with a compound which bears groups which are reactive toward epoxide groups and at least one carbalkoxymethyl ester group.
Claim 9
Dependent Claim
34 words
A process for preparing a binder, in particular for electropaints, which comprises reacting a diisocyanate with a compound which bears groups which are reactive toward isocyanate groups and at least one carbalkoxymethyl ester group.
Claim 10
Dependent Claim
34 words
A process for preparing a binder, in particular for electropaints, which comprises reacting a diisocyanate with a compound which bears groups which are reactive toward isocyanate groups and at least one carbalkoxymethyl ester group.
Claim 11
Dependent Claim
43 words
A process as claimed in claim 6, wherein the molar ratios of the starting materials used are chosen so as to produce a binder which has 1 to 5 hydroxyl groups and 1 to 5 carbalkoxymethyl ester groups per 1,000 molecular weight units.
Claim 12
Dependent Claim
44 words
A process as claimed in claim 8, wherein the molar ratios of the starting materials are chosen in such a way as to produce a binder which has an equivalence ratio between the hydroxyl groups and the carbalkoxymethyl ester groups of 2:1 to 1:2.
Claim 13
Dependent Claim
17 words
Use of a binder as claimed in claim 1, for preparing electrocoating baths for the electrocoating process.
Claim 14
Dependent Claim
90 words
A process for preparing coatings by dipping an electrically conductive substrate into an aqueous electrocoating bath which contains an at least partially acid-neutralized binder which contains hydroxyl groups, esterified carboxyl groups and amino and/or ammonium groups and is based on an organic synthetic resin, and connecting it therein as the cathode, depositing a film on the substrate by direct current, removing the substrate from the bath, and baking the film to harden it into a coating, wherein the esterified carboxyl groups of the organic synthetic resin are carbalkoxymethyl ester groups.
Claim 15
Dependent Claim
90 words
A process for preparing coatings by dipping an electrically conductive substrate into an aqueous electrocoating bath which contains an at least partially acid-neutralized binder which contains hydroxyl groups, esterified carboxyl groups and amino and/or ammonium groups and is based on an organic synthetic resin, and connecting it therein as the cathode, depositing a film on the substrate by direct current, removing the substrate from the bath, and baking the film to harden it into a coating, wherein the esterified carboxyl groups of the organic synthetic resin are carbalkoxymethyl ester groups.
Claim 16
Dependent Claim
34 words
A process as claimed in claim 11, wherein the binder used is a synthetic resin which contains 1 to 5 hydroxyl groups and 1 to 5 carbalkoxymethyl ester groups per 1,000 molecular weight units.
Claim 17
Dependent Claim
33 words
A process as claimed in claim 12, wherein the binder used is a synthetic resin which has an equivalence ratio between the hydroxyl groups and the carbalkoxymethyl ester groups of 2:1 to 1:2.
Claim 18
Dependent Claim
93 words
A process as claimed in claim 13, wherein the binder used is a synthetic resin which has been prepared by reacting a polyglycidyl ester or ether with a compound which bears 2 groups which are reactive toward epoxide groups and at least one carbalkoxymethyl ester group to give an intermediate product having terminal epoxide groups and reacting these epoxide groups, by ring-opening, with a primary or secondary amine, a ketimine or aldimine which has a hydrogen atom at the nitrogen atom or with an amino alcohol which is blocked at the nitrogen atom.
Claim 19
Dependent Claim
87 words
A process as claimed in claim 13, wherein the binder used is a synthetic resin which has been prepared by reacting a diisocyanate with a compound which bears groups which are reactive toward isocyanate groups and at least one carbalkoxymethyl ester group to give an intermediate product having terminal isocyanate groups and reacting these isocyanate groups with a primary or secondary amine, a ketimine or aldimine which has a hydrogen atom at the nitrogen atom or with an amino alcohol which is blocked at the nitrogen atom.
Claim 20
Dependent Claim
12 words
A coated substrate prepared by a process as claimed in claim 11.
References Cited (Backward Citations)
US4373072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |