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Patent US4444634A successfully refreshed from Google Patents.
US4444634A
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Polyadduct/polycondensate which contains basic nitrogen groups, and its use as electrodepositable coating
Assignee: BASF SE
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Filing: 1982-06-15
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Granted: 1984-04-24
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Expires: 2002-06-15
Abstract
Abstract Polyadducts/polycondensates which can be diluted with water when protonated with an acid and which contain basic nitrogen groups are obtained by the polyaddition reaction of (A) a Mannich base obtained from (a) a monophenol and/or a polyphenol, (b) one or more dialkylamines of the formula ##STR1## where R 1 and R 2 are each alkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and (c) formaldehyde with (B) an epoxy resin and contain groups, which are bonded to aromatic rings, of the general formula ##STR2## and may or may not contain groups of the general formula ##STR3## where R 3 and R 4 are each alkyl, hydroxyalkyl or alkoxyalkyl, or are linked to one another to form a 5-membered or 6-membered ring, and R 5 and R 6 are each hydrogen or methyl. These products are useful as binders for the cathodic electrocoating of metallic articles.
Inventors
- 👤 Fritz E. Kempter
- 👤 Eberhard Schupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:26
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/623
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
A polyadduct/polycondensate which can be diluted with water when protonated with an acid, contains basic nitrogen groups, and has been obtained by the polyaddition reaction of (A) from 5 to 90% by weight of a Mannich base obtained from (a) a monophenol or polyphenol or a mixture of a monophenol and a polyphenol, (b) one or more dialkylamines of the formula ##STR24## where R 1 and R 2 are identical or different and are each alkyl or alkoxyalkyl of 1 to 9 carbon atoms, or are linked to one another to form a 5-membered or 6-membered ring, and (c) formaldehyde or a formaldehyde donor, with (B) from 10 to 95% by weight of one or more epoxy resins, wherein the polyadduct/polycondensate of (A) with (B) contains groups, which are bonded to aromatic rings, of the formula (I) ##STR25## and may or may not contain groups of the formula (II) ##STR26## where R 3 and R 4 are identical or different and are each alkyl of 1 to 9 carbon atoms, or hydroxyalkyl or alkoxyalkyl, each of 2 to 10 carbon atoms, or are linked to one another to form a 5-membered or 6-membered ring, and R 5 and R 6 are identical or different and are each hydrogen or methyl.
Claim 2
Dependent Claim
210 words
A polyadduct/polycondensate which can be diluted with water when protonated with an acid, contains basic nitrogen groups, and has been obtained by the polyaddition reaction of (A) from 5 to 90% by weight of a Mannich base obtained from (a) a monophenol or polyphenol or a mixture of a monophenol and a polyphenol, (b) one or more dialkylamines of the formula ##STR24## where R 1 and R 2 are identical or different and are each alkyl or alkoxyalkyl of 1 to 9 carbon atoms, or are linked to one another to form a 5-membered or 6-membered ring, and (c) formaldehyde or a formaldehyde donor, with (B) from 10 to 95% by weight of one or more epoxy resins, wherein the polyadduct/polycondensate of (A) with (B) contains groups, which are bonded to aromatic rings, of the formula (I) ##STR25## and may or may not contain groups of the formula (II) ##STR26## where R 3 and R 4 are identical or different and are each alkyl of 1 to 9 carbon atoms, or hydroxyalkyl or alkoxyalkyl, each of 2 to 10 carbon atoms, or are linked to one another to form a 5-membered or 6-membered ring, and R 5 and R 6 are identical or different and are each hydrogen or methyl.
Claim 3
Dependent Claim
31 words
A polyadduct/polycondensate as claimed in claim 1, wherein the component (b) used to prepare the Mannich base (A) is either di-n-butylamine or a mixture of di-n-butylamine and another secondary amine (b).
Claim 4
Dependent Claim
115 words
A polyadduct/polycondensate as claimed in claim 1 or 2, wherein the monophenols or polyphenols, or mixture of monophenols and polyphenols, (a) used to prepare the Mannich base (A) are (a 1 ) one or more mononuclear or polynuclear monophenols or polyphenols, or a mixture of such monophenols and polyphenols, some or all of which are replaced by (a 2 ) a mononuclear or polynuclear monophenol or polyphenol, or a mixture of a monophenol and a polyphenol of this type, which contains groups of the formula (I) ##STR27## and may or may not contain groups of the formula (II) ##STR28## where R 3 , R 4 , R 5 and R 6 have the above meanings.
Claim 5
Dependent Claim
41 words
A polyadduct/polycondensate as claimed in claim 1 or 2 or 3, wherein a reaction product of a polyepoxide compound with less than the equivalent amount of a mononuclear or polynuclear monophenol and/or polyphenol (a 2 ) is used as component (B).
Claim 6
Dependent Claim
19 words
A polyadduct/polycondensate as claimed in claim 3, wherein R 3 and R 4 in the formula (I) are hydroxyethyl.
Claim 7
Dependent Claim
23 words
A process for the cathodic electrocoating of metallic articles, wherein the binder used is the polyadduct/polycondensate as claimed in claim 1 or 2.
Claim 8
Dependent Claim
21 words
A process for the cathodic electrocoating of metallic articles, wherein the binder used is the polyadduct/polycondensate as claimed in claim 3.
Claim 9
Dependent Claim
21 words
A process for the cathodic electrocoating of metallic articles, wherein the binder used is the polyadduct/polycondensate as claimed in claim 4.
Claim 10
Dependent Claim
21 words
A process for the cathodic electrocoating of metallic articles, wherein the binder used is the polyadduct/polycondensate as claimed in claim 5.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |