US4430462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathodically depositable aqueous electro-dip lacquer coating composition
Assignee: HERBERTS DEX GmbH
•
Filing: 1982-06-01
•
Granted: 1984-02-07
•
Expires: 2002-06-01
Abstract
Abstract The invention relates to a cathodically depositable aqueous electro-dip lacquer coating composition containing as synthetic resin binder (A) from 50 to 99% by weight, based on the total quantity of synthetic resin binder, of one or more amino-1,2-epoxy resins, the amino-1,2-epoxy resin or--where several amino-1,2-epoxy resins are present--the mixture of amino-1,2-epoxy resins (a) having an average molecular weight (Mn) of from 700 to 10,000, (b) containing per 1000 molecular weight units from 0.2 to 3.6 lateral or terminal ethylenic double bonds corresponding to a hydrogenation iodine number of from 5 to 90, (c) containing primary and/or secondary alcoholic hydroxyl groups corresponding to a hydroxyl number of from 30 to 450 and (d) having an amine number of from 30 to 150, (B) from 1 to 50% by weight of a substantially non-acid polyester of a polycarboxylic acid containing at least two terminal or lateral, saturated and/or unsaturated β-hydroxy ester groups per molecule and having an average molecular weight of from about 1500 to 10,000, and (C) soluble and/or insoluble transesterification catalysts for the thermal crosslinking of (A) and (B) at temperatures above 140° C. The invention also relates to the use of the coating composition for cathodic deposition from a lacquer bath onto electrically conductive surfaces.
Inventors
- 👤 Kurt E. Jaeger
- 👤 Klausjorg Klein
- 👤 Hans-Peter Patzschke
- 👤 Dietrich Saatweber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:15
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4453; C08; C08G; C08G59/00; C08G59/14; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C08G59/4276; C08G59/50; C08G59/56; C09D163/00; C09D5/4434; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
237 words
A cathodically depositable aqueous electro-dip lacquer coating composition which contains a synthetic resin binder containing amino groups that can be made soluble in water by protonation with acids, and which optionally contains pigments, fillers, corrosion inhibitors, lacquer auxiliaries, catalysts and-in a quantity of up to 20% by weight, based on the total weight of the coating composition-organic solvents, characterized in that it contains as synthetic resin binder, (A) from 50 to 99% by weight, based on the total quantity of synthetic resin binder, of one or more amino-1,2-epoxy resins, the amino-1,2-epoxy resins or--where several amino-1,2-epoxy resins are present, the mixture of amino-1,2-epoxy resins (a) having an average molecular weight (Mn) of from 700 to 10,000, (b) containing from 0.2 to 3.6 lateral or terminal ethylenic double bonds per 1000 molecular weight units, corresponding to a hydrogenation iodine number of from 5 to 90, (c) containing primary and/or secondary alcoholic hydroxyl groups corresponding to a hydroxyl number of from 30 to 450 and (d) having an amine number of from 30 to 150, (B) from 1 to 50% by weight of a substantially non-acid polyester of a polycarboxylic acid which contains at least 2 terminal or lateral, saturated and/or unsaturated β-hydroxy ester groups per molecule and which has an average molecular weight of from about 1500 to 10,000 and (C) soluble and/or insoluble transesterification catalysts for the thermal crosslinking of (A) and (B) at temperatures above 140° C.
Claim 2
Dependent Claim
237 words
A cathodically depositable aqueous electro-dip lacquer coating composition which contains a synthetic resin binder containing amino groups that can be made soluble in water by protonation with acids, and which optionally contains pigments, fillers, corrosion inhibitors, lacquer auxiliaries, catalysts and-in a quantity of up to 20% by weight, based on the total weight of the coating composition-organic solvents, characterized in that it contains as synthetic resin binder, (A) from 50 to 99% by weight, based on the total quantity of synthetic resin binder, of one or more amino-1,2-epoxy resins, the amino-1,2-epoxy resins or--where several amino-1,2-epoxy resins are present, the mixture of amino-1,2-epoxy resins (a) having an average molecular weight (Mn) of from 700 to 10,000, (b) containing from 0.2 to 3.6 lateral or terminal ethylenic double bonds per 1000 molecular weight units, corresponding to a hydrogenation iodine number of from 5 to 90, (c) containing primary and/or secondary alcoholic hydroxyl groups corresponding to a hydroxyl number of from 30 to 450 and (d) having an amine number of from 30 to 150, (B) from 1 to 50% by weight of a substantially non-acid polyester of a polycarboxylic acid which contains at least 2 terminal or lateral, saturated and/or unsaturated β-hydroxy ester groups per molecule and which has an average molecular weight of from about 1500 to 10,000 and (C) soluble and/or insoluble transesterification catalysts for the thermal crosslinking of (A) and (B) at temperatures above 140° C.
Claim 3
Dependent Claim
32 words
A coating composition as claimed in claim 1, characterized in that it contains from 60 to 80% by weight of component (A) and from 40 to 20% by weight of component (B).
Claim 4
Dependent Claim
41 words
A coating composition as claimed in claim 1 or 2, characterized in that the amino-1,2-epoxy resin present in component (A) or--where several amino-1,2-epoxy resins are present--the mixture of amino-1,2-epoxy resins has an average molecular weight (mn) of from 1500 to 5000.
Claim 5
Dependent Claim
44 words
A coating composition as claimed in claim 1, characterized in that the amino-1,2-epoxy resin present in component (A) or--where several amino-1,2-epoxy resins are present--the mixture of amino-1,2-epoxy resins has a hydrogenation iodine number of from 10 to 75 and preferably from 20 to 60.
Claim 6
Dependent Claim
43 words
A coating composition as claimed in claim 1, characterized in that the amino-1,2-epoxy resin present in component (A) or--where several amino-1,2-epoxy resins are present--the mixture of amino-1,2-epoxy resins has a hydroxyl number of from 80 to 400 and preferably from 120 to 350.
Claim 7
Dependent Claim
43 words
A coating composition as claimed in claim 1, characterized in that the amino-1,2-epoxy resin present in component (A) or--where several amino-1,2-epoxy resins are present--the mixture of amino-1,2-epoxy resins has an amine number of from 50 to 120 and preferably from 70 to 100.
Claim 8
Dependent Claim
29 words
A coating composition as claimed in claim 1, characterized in that component (B) has a hydrogenation iodine number of from 5 to 80 and preferably from 10 to 50.
Claim 9
Dependent Claim
21 words
The use of the coating composition claimed in claim 1 for cathodic deposition from a lacquer bath onto electrically conductive surfaces.
References Cited (Backward Citations)
US3367991A
Cited
DE2426996A1
Cited
GB1461823A
Cited
US4064090A
Cited
US4071428A
Cited
US4172822A
Cited
US4220568A
Cited
US4252703A
Cited
US4307153A
Cited
US4370452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |