US4444634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyadduct/polycondensate which contains basic nitrogen groups, and its use as electrodepositable coating
Assignee: BASF SE
•
Filing: 1982-06-15
•
Granted: 1984-04-24
•
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 20:09
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.
References Cited (Backward Citations)
US2989534A
Cited
US3839252A
Cited
US3984299A
Cited
US4001155A
Cited
US3994989A
Cited
US4036795A
Cited
US4210506A
Cited
US4189450A
Cited
US4269742A
Cited
US4336116A
Cited
US4340714A
Cited
US4340455A
Cited
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 |