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US4444845A
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Process for the production of coatings and the use of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate as additives for polyurethane based wire lacquers
Assignee: Bayer AG
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Filing: 1982-08-13
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Granted: 1984-04-24
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Expires: 2002-08-13
Abstract
Abstract This invention relates to a new process for the production of coatings by coating heat-resistant substrates with a coating compound in which the binder is a two-component system containing polyisocyanates having at least partially blocked isocyanate groups and compounds containing isocyanate reactive groups and optionally further auxiliary agents and additives, the two-component system being one in which from about 0.1 to 60 equivalent % of the component containing isocyanate reactive groups consists of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate, and to the coated substrate produced therefrom.
Inventors
- 👤 Willi Dunwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2956; Y10T428/31504; Y10T428/31547; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
A process for the production of a coating which comprises coating a heat-resistant substrate with a coating compound in which the binder is a two-component system comprising (i) a polyisocyanate component wherein at least about 50% of the isocyanate groups are blocked with blocking agents and (ii) a component mixture comprising compounds having isocyanate reactive groups, at an equivalent ratio of blocked and unblocked isocyanate groups to isocyanate reactive groups of about 0.1:1 to 2.8:1, and hardening the resulting coating at elevated temperatures, characterized in that binder component (ii) contains about 0.1 to 60 equivalent percent, based on all the groups capable of undergoing an addition reaction with isocyanate groups, of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate.
Claim 2
Dependent Claim
112 words
A process for the production of a coating which comprises coating a heat-resistant substrate with a coating compound in which the binder is a two-component system comprising (i) a polyisocyanate component wherein at least about 50% of the isocyanate groups are blocked with blocking agents and (ii) a component mixture comprising compounds having isocyanate reactive groups, at an equivalent ratio of blocked and unblocked isocyanate groups to isocyanate reactive groups of about 0.1:1 to 2.8:1, and hardening the resulting coating at elevated temperatures, characterized in that binder component (ii) contains about 0.1 to 60 equivalent percent, based on all the groups capable of undergoing an addition reaction with isocyanate groups, of N,N',N"-tris-(2-hydroxyethyl)-isocyanurate.
Claim 3
Dependent Claim
51 words
The process according to claim 1, wherein polyisocyanate component (i) comprises an organic polyisocyanate in the molecular weight range of from about 174 to 1000, not including the molecular weight of the blocking agent, and wherein the isocyanate groups are exclusively aromatically-bound and completely blocked with blocking agents for isocyanate groups.
Claim 4
Dependent Claim
58 words
The process according to claim 1 or 2, wherein binder component (ii) consists essentially of polyester polyols in the molecular weight range of from about 200 to 2000 containing at least two aliphatically-bound hydroxyl groups and/or oligourethanes in the molecular weight range of from about 200 to 2000 containing at least two aliphatically-bound hydroxyl end groups, and N,N',N"-tris-(2-hydroxyethyl)-isocyanurate.
Claim 5
Dependent Claim
39 words
The process according to claim 1 or 2, wherein binder components (i) and (ii) are present in proportions corresponding to an equivalent ratio of blocked and unblocked isocyanate groups to isocyanate reactive groups of from about 0.5:1 to 1.9:1.
Claim 6
Dependent Claim
37 words
The process according to claim 3, wherein binder components (i) and (ii) are present in proportions corresponding to an equivalent ratio of blocked and unblocked isocyanate groups to isocyanate reactive groups of from about 0.5:1 to 1.9:1.
Claim 7
Dependent Claim
14 words
The process of claim 1 or 2 wherein said substrate is a metal wire.
Claim 8
Dependent Claim
12 words
The process of claim 4 wherein said substrate is a metal wire.
Claim 9
Dependent Claim
11 words
The coated substrate produced in accordance with claim 1 or 2.
Claim 10
Dependent Claim
9 words
The coated substrate produced in accordance with claim 6.
Claim 11
Dependent Claim
9 words
The coated substrate produced in accordance with claim 7.
References Cited (Backward Citations)
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 |