Patent US4563515A successfully refreshed from Google Patents.
US4563515A
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Cathodically depositable paint binders based on the reaction product of epoxy resins and secondary amines carrying carboxylic acid amide groups
Assignee: Allnex Austria GmbH
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Filing: 1985-03-04
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Granted: 1986-01-07
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Expires: 2005-03-04
Abstract
Abstract Cationic synthetic resin binders free of epoxy groups for the formulation of electrodeposition paints are described. The binders are the reaction product of an epoxy resin carrying at least two epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group of a secondary amine carrying carboxylic acid amide groups. Upon being crosslinked on stoving with a suitable hardening component, the binders have improved water dilutability, permitting a reduction of the degree of neutralization necessary for electrodeposition application and improved intercoat adhesion to addition coats. These improved characteristics are significant with respect to an increase of current yield and in adhering additional coatings of a paint system.
Inventors
- 👤 Rudolf Schipfer
- 👤 Wolfgang Daimer
- 👤 Gerhard Schmolzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:22
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/54; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
105 words
Cationic synthetic resin binders free of epoxy groups which are particularly suited for the formulation of electrodepositable-paints comprising the reaction product at about 20° to 150° C. of an epoxy resin carrying at least 2 epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group on said epoxy resin of a secondary amine of the general formula ##STR5## wherein n is 2 through 4, m is 1 through 5, and R 1 is --0H or ##STR6## R 2 is --H or ##STR7## and R 3 is an aromatic, cycloaliphatic or aliphatic hydrocarbon radical.
Claim 2
Dependent Claim
105 words
Cationic synthetic resin binders free of epoxy groups which are particularly suited for the formulation of electrodepositable-paints comprising the reaction product at about 20° to 150° C. of an epoxy resin carrying at least 2 epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group on said epoxy resin of a secondary amine of the general formula ##STR5## wherein n is 2 through 4, m is 1 through 5, and R 1 is --0H or ##STR6## R 2 is --H or ##STR7## and R 3 is an aromatic, cycloaliphatic or aliphatic hydrocarbon radical.
Claim 3
Dependent Claim
31 words
Binders according to claim 1 wherein said secondary amine has general formula (I) and is the reaction product of a dialkylene triamine or alkylamino-alkanol amine with a hydroxy carboxylic acid ester.
Claim 4
Dependent Claim
19 words
Binders according to claim 2 wherein said hydroxy carboxylic acid ester is an inner ester (lactone) of the acid.
Claim 5
Dependent Claim
28 words
Binders according to claim 2 wherein said hydroxy carboxylic acid ester is the reaction product of 1 mole of a diisocyanate with 2 moles of glycolic acid ester.
Claim 6
Dependent Claim
26 words
Binders according to claim 4 wherein said secondary amine is a transamidation product of the ester product according to claim 4, with 2 moles of amino-ethylethanolamine.
Claim 7
Dependent Claim
21 words
Binders according to claim 1 wherein an additional active hydrogen compound is reacted with the epoxy groups of said epoxy resin.
Claim 8
Dependent Claim
16 words
Binders according to claim 6 wherein said active hydrogen compound contains hydroxy, carboxy, or amino groups.
Claim 9
Dependent Claim
16 words
Binders according to claim 7 wherein said active hydrogen compound is an oligomeric or polymeric compound.
Claim 10
Dependent Claim
26 words
Binders according to claim 6 wherein said active hydrogen compound is reacted with said epoxy resin before said secondary amine is reacted with said epoxy resin.
Claim 11
Dependent Claim
16 words
Binders according to claim 6 wherein said active hydrogen compound is a primary or secondary amine.
Claim 12
Dependent Claim
20 words
Binders according to claim 10 wherein said active hydrogen compound is a primary amine which includes a tertiary amine group.
Claim 13
Dependent Claim
106 words
Process of producing cationic synthetic resin binders free of epoxy groups which are particularly suited for the formulation of electrodepositable-paints comprising reacting at from about 20° to 150° C. an epoxy resin carrying at least 2 epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group on said epoxy resin of a secondary amine of the general formula ##STR8## wherein n is 2 through 4, m is 1 through 5, and R 1 is --OH or ##STR9## R 2 is --H or ##STR10## and R 3 is an aromatic, cycloaliphatic or aliphatic hydrocarbon radical.
Claim 14
Dependent Claim
106 words
Process of producing cationic synthetic resin binders free of epoxy groups which are particularly suited for the formulation of electrodepositable-paints comprising reacting at from about 20° to 150° C. an epoxy resin carrying at least 2 epoxy groups and having an epoxy equivalent of 190 to 1000, with from 0.1 to 1.0 amino groups per available epoxy group on said epoxy resin of a secondary amine of the general formula ##STR8## wherein n is 2 through 4, m is 1 through 5, and R 1 is --OH or ##STR9## R 2 is --H or ##STR10## and R 3 is an aromatic, cycloaliphatic or aliphatic hydrocarbon radical.
Claim 15
Dependent Claim
15 words
Process according to claim 12 wherein said reaction is carried out in an inert solvent.
Claim 16
Dependent Claim
31 words
Process according to claim 12 wherein said secondary amine has general formula (I) and is the reaction product of a dialkylene triamine or alkylamino-alkanol amine with a hydroxy carboxylic acid ester.
Claim 17
Dependent Claim
19 words
Process according to claim 14 wherein said hydroxy carboxylic acid ester is an inner ester (lactone) of the acid.
Claim 18
Dependent Claim
28 words
Process according to claim 14 wherein said hydroxy carboxylic acid ester is the reaction product of 1 mole of a diisocyanate with 2 moles of glycolic acid ester.
Claim 19
Dependent Claim
26 words
Process according to claim 16 wherein said secondary amine is a transamidation product of the ester product according to claim 4, with 2 moles of amino-ethylethanolamine.
Claim 20
Dependent Claim
21 words
Process according to claim 12 wherein an additional active hydrogen compound is reacted with the epoxy groups of said epoxy resin.
Claim 21
Dependent Claim
16 words
Process according to claim 18 wherein said active hydrogen compound contains hydroxy, carboxy, or amino groups.
Claim 22
Dependent Claim
16 words
Process according to claim 19 wherein said active hydrogen compound is an oligomeric or polymeric compound.
Claim 23
Dependent Claim
26 words
Process according to claim 18 wherein said active hydrogen compound is reacted with said epoxy resin before said secondary amine is reacted with said epoxy resin.
Claim 24
Dependent Claim
16 words
Process according to claim 18 wherein said active hydrogen compound is a primary or secondary amine.
Claim 25
Dependent Claim
20 words
Process according to claim 22 wherein said active hydrogen compound is a primary amine which includes a tertiary amine group.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |