Patent US4558090A successfully refreshed from Google Patents.
US4558090A
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Water-dilutable coating agent for preparing the base layer of a multilayer coating
Assignee: BASF Farben und Fasern AG
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Filing: 1984-10-02
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Granted: 1985-12-10
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Expires: 2004-10-02
Abstract
Abstract A water-dilutable coating agent for preparing the base layer of a multilayer coating. The coating agent contains pigments and optionally flow-control agents, thixotroping agents, fillers, organic solvents and other customary auxiliaries. The coating agent contains as a binder an aqueous polyuretane dispersion which has a polyuertane resin acid number of 5 to 70 and which as been prepared by reacting: (A) a linear polyether diol and/or polyester diol having terminal hydroxyl groups and a molecular weight of 400 to 3,000 with (B) a diisocyanate in such a molar ratio that an intermediate product is formed which has terminal isocyanate groups, (C) and reacting the intermediate product with a compound which has two groups which are reactive toward isocyanate groups and at least one group which is capable of forming an anion and which has been neutralized with a tertiary amine before the reaction, converting the second intermediate product, obtained from (A), (B) and (C) into a predominantly aqueous phase and (D) reacting the isocyanate groups which are still present with a diamine and/or polyamine having primary and/or secondary amino groups.
Inventors
- 👤 Hermann-Josef Drexler
- 👤 Franz Ebner
- 👤 Hans-Dieter Hille
- 👤 Ulrich Poth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/53; B05D7/534; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/10; C09; C09D; C09D175/00; C09D175/04; C09D5/00; C09D5/44; C09D5/4419; C09D5/4465; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31605
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
A water-dilutable coating agent for preparing the base layer of a multilayer coating and which contains pigments and as a binder an aqueous polyurethane dispersion which has a polyurethane resin acid number of 5 to 70 and which has been prepared by reacting: (A) a linear polyether diol and/or polyester diol having terminal hydroxyl groups and a molecular weight of 400 to 3,000 with (B) a diisocyanate to form a first intermediate product in such a molar ratio that said first intermediate product is formed which has terminal isocyanate groups; (C) and reacting said first intermediate product with a compound which has two groups which are reactive toward isocyanate groups and at least one group which is capable of forming an anion, said compound neutralized with a tertiary amine before the reaction and forming a second intermediate product, converting said second intermediate product, obtained from (A), (B) and (C), into a predominantly aqueous phase; and (D) reacting isocyanate groups which are still present with a diamine and/or polyamine having primary and/or secondary amino groups.
Claim 2
Dependent Claim
174 words
A water-dilutable coating agent for preparing the base layer of a multilayer coating and which contains pigments and as a binder an aqueous polyurethane dispersion which has a polyurethane resin acid number of 5 to 70 and which has been prepared by reacting: (A) a linear polyether diol and/or polyester diol having terminal hydroxyl groups and a molecular weight of 400 to 3,000 with (B) a diisocyanate to form a first intermediate product in such a molar ratio that said first intermediate product is formed which has terminal isocyanate groups; (C) and reacting said first intermediate product with a compound which has two groups which are reactive toward isocyanate groups and at least one group which is capable of forming an anion, said compound neutralized with a tertiary amine before the reaction and forming a second intermediate product, converting said second intermediate product, obtained from (A), (B) and (C), into a predominantly aqueous phase; and (D) reacting isocyanate groups which are still present with a diamine and/or polyamine having primary and/or secondary amino groups.
Claim 3
Dependent Claim
35 words
The coating agent of claim 1, further comprising an additional binder component comprising a water-dilutable melamine resin in an amount of 1 to 80% by weight, relative to the solids content of the polyurethane dispersion.
Claim 4
Dependent Claim
26 words
The coating agent of claim 2, wherein the melamine resin content, relative to the solids content of the polyurethane dispersion, is 20 to 60% by weight.
Claim 5
Dependent Claim
64 words
The coating agent of claim 2, further comprising as a further binder component a water-dilutable polyester resin and/or a water-dilutable polyacrylate resin, where the weight ratio of melamine resin to polyester and/or polyacrylate resin is 2:1 to 1:4 and the total melamine resin and polyester and polyacrylate resin content, relative to the solids content of the polyurethane dispersion, is 1 to 80% by weight.
Claim 6
Dependent Claim
31 words
The coating agent of claim 4, wherein the melamine resin and polyester and polyacrylate resin content is 20 to 60% by weight, relative to the solids content of the polyurethane dispersion.
Claim 7
Dependent Claim
56 words
The coating agent of claim 1, further comprising as an additional binder component a blocked polyisocyanate together with a water-dilutable polyester resin and/or a water-dilutable polyacrylate resin, where the polyisocyanate and the polyester resin and/or the polyacrylate resin content is in total 1 to 80% by weight, relative to the solids content of the polyurethane dispersion.
Claim 8
Dependent Claim
23 words
The coating agent of claim 6, further comprising 0.5 to 25% by weight of metal pigments relative to the total binder solids content.
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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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |