Patent US4411955A successfully refreshed from Google Patents.
US4411955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactive hardenable binder mixture, process for preparing hardened products and use of the mixture for the preparation of coatings
Assignee: Hoechst AG
•
Filing: 1981-11-02
•
Granted: 1983-10-25
•
Expires: 2001-11-02
Abstract
Abstract A reactive hardenable binder composition based on (A) at least one aliphatic, cycloaliphatic or aliphatic-cycloaliphatic polyepoxide wherein at least 2 epoxidized cycloaliphatic radicals are bound via an aliphatic bridge, (B) at least one polycarboxylic acid unit of formula ##STR1## having an acid number between 30 and 400 wherein R 1 is a radical of an at least oligomer product selected from the group consisting of polyesters and polymers having initially free OH-groups, R 2 is a radical of a dicarboxylic carbocyclic acid having a COOH-group in ortho-position to its ester bond and (C) a catalyst component of the formula ##STR2## wherein R 3 is a radical of a homo- or copolymer or combination of both of an unsaturated carboxylic acid with a statistically distributed number of COOH side groups or the radical of a polyester having initially free COOH-groups and Me is one equivalent of an alkaline or an alkaline earth metal, thus being present in its salt form, a process for the preparation of hardened products from said composition and a coated article having a coating based on said composition.
Inventors
- 👤 Josef Mondt
- 👤 Gerd Walz
- 👤 Thaddaus Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/40; C08G59/42; C08G59/4246; C08G59/68; C08G59/681; C08G59/685; C09; C09D; C09D163/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
222 words
A reactive hardenable binder composition based on (A) at least one aliphatic, cycloaliphatic or aliphatic-cycloaliphatic polyepoxide with a total epoxy equivalent weight between 80 and 500, wherein at least 2 epoxidized cycloaliphatic radicals are bound via an aliphatic bridge, (B) at least one polycarboxylic acid unit of formula ##STR6## having an acid number between 30 and 400 wherein R 1 is a radical of an at least oligomer product selected from the group consisting of polyesters and polymers having initially free OH-groups, R 2 is a radical of a dicarboxylic carbocyclic acid having a COOH-group in ortho-position to its ester bond and (C) a catalyst component of the formula ##STR7## wherein R 3 is a radical of a homo- or copolymer or combination of both of an unsaturated carboxylic acid with a statistically distributed number of COOH side groups having an acid number between 10 and 500, or the radical of a polyester having initially free COOH groups, Me is one equivalent of an alkali or an alkaline earth metal, thus being present in its salts form, said component (C) is present in such an amount that the metal content is between 0.02 and 0.2 equivalent-%, referred to component (B), the ratio of the total epoxy equivalents of component (A) to the free COOH-groups of component (B) is between 1:5 and 5:1.
Claim 2
Dependent Claim
222 words
A reactive hardenable binder composition based on (A) at least one aliphatic, cycloaliphatic or aliphatic-cycloaliphatic polyepoxide with a total epoxy equivalent weight between 80 and 500, wherein at least 2 epoxidized cycloaliphatic radicals are bound via an aliphatic bridge, (B) at least one polycarboxylic acid unit of formula ##STR6## having an acid number between 30 and 400 wherein R 1 is a radical of an at least oligomer product selected from the group consisting of polyesters and polymers having initially free OH-groups, R 2 is a radical of a dicarboxylic carbocyclic acid having a COOH-group in ortho-position to its ester bond and (C) a catalyst component of the formula ##STR7## wherein R 3 is a radical of a homo- or copolymer or combination of both of an unsaturated carboxylic acid with a statistically distributed number of COOH side groups having an acid number between 10 and 500, or the radical of a polyester having initially free COOH groups, Me is one equivalent of an alkali or an alkaline earth metal, thus being present in its salts form, said component (C) is present in such an amount that the metal content is between 0.02 and 0.2 equivalent-%, referred to component (B), the ratio of the total epoxy equivalents of component (A) to the free COOH-groups of component (B) is between 1:5 and 5:1.
Claim 3
Dependent Claim
40 words
A composition as claimed in claim 1 wherein in component (A) at least 2 epoxidized cycloaliphatic radicals are bound via an aliphatic bridge containing at least one group selected from the group consisting of ester groups or ether oxygen atoms.
Claim 4
Dependent Claim
21 words
A composition as claimed in claim 1 containing aliphatic and cycloaliphatic epoxy compounds in a weight ratio between 1:10 and 10:1.
Claim 5
Dependent Claim
39 words
A composition as claimed in claim 1 wherein in component (C) of formula II R 3 is a homo- or copolymer, based on an at least dicarboxylic acid having between 3 and 5 C-atoms, or a combination of both.
Claim 6
Dependent Claim
17 words
A composition as claimed in claim 1 wherein component (C) contains lithium as a salt forming metal.
Claim 7
Dependent Claim
30 words
A process for the preparation of hardened products based on a composition as claimed in claim 1 wherein the composition is hardened at a temperature between -30° and 350° C.
Claim 8
Dependent Claim
21 words
A process as claimed in claim 6 wherein the hardened products are in the form of a coating on a substrate.
Claim 9
Dependent Claim
18 words
A coating on a substrate wherein the coating is based on a composition as claimed in claim 1.
Claim 10
Dependent Claim
28 words
A coating on a substrate wherein the coating is an undercoat for further coatings or a top coating layer derived from the composition as claimed in claim 1.
Claim 11
Dependent Claim
19 words
A coating on a substrate as claimed in claim 9 wherein the undercoat is a metal effect coating layer.
References Cited (Backward Citations)
US4131715A
Cited
US4240938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |