Patent US4288569A successfully refreshed from Google Patents.
US4288569A
Expired / Lapsed
US
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Power lacquer binders and process for the preparation thereof
Assignee: Bayer AG
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Filing: 1980-08-29
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Granted: 1981-09-08
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Expires: 2000-08-29
Abstract
Abstract A powder lacquer binder composition which comprises a homogeneous crosslinkable mixture comprising: (A) a polymer containing more than one carboxyl group and having a melting and softening point of from 20° to 150° C. (as determined by differential thermoanalysis) and an acid number of from 10 to 150 mg of KOH/g; and (B) a 1,2-polyepoxide which is N,N',N"-triglycidyl triazolidine-3,5-dione having an epoxide value of from 0.6 to 1.13; the mixture containing from 0.5 to 1.5 1,2-epoxide group per carboxyl group; and a process for the preparation thereof.
Inventors
- 👤 Ludwig Rottmaier
- 👤 Rudolf Merten
- 👤 Rolf Dhein
- 👤 Hans J. Kreuder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:06
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; C09D201/00; C09D201/02; C09D201/06; C09D201/08; C08L; C08L63/00; Y; Y10; Y10S; Y10S525/00; Y10S525/934; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A powder lacquer binder composition which comprises a homogenous, cross-linkable mixture comprising: (A) A polymer containing more than one carboxyl group and having a melting and softening point of from 20° to 150° C. (as determined by differential thermoanalysis) and an acid number of from 10 to 150 mg of KOH/g; and (B) a 1,2-polyepoxide which is an N,N',N"-triglycidyl triazolidine-3,5-dione having an epoxide value of from 0.6 to 1.13; the mixture containing from 0.5 to 1.5 1,2-epoxide group per carboxyl group.
Claim 2
Dependent Claim
81 words
A powder lacquer binder composition which comprises a homogenous, cross-linkable mixture comprising: (A) A polymer containing more than one carboxyl group and having a melting and softening point of from 20° to 150° C. (as determined by differential thermoanalysis) and an acid number of from 10 to 150 mg of KOH/g; and (B) a 1,2-polyepoxide which is an N,N',N"-triglycidyl triazolidine-3,5-dione having an epoxide value of from 0.6 to 1.13; the mixture containing from 0.5 to 1.5 1,2-epoxide group per carboxyl group.
Claim 3
Dependent Claim
44 words
A composition as claimed in claim 1 comprising, as the 1,2-polyepoxide (b), a N,N',N"-triglycidyl triazolidine-3,5-dione corresponding to the following general formula: ##STR7## wherein R 1 , R 2 and R 3 , which may be the same or different, each represents hydrogen or methyl.
Claim 4
Dependent Claim
21 words
A composition as claimed in claim 1 comprising, as the polymer (A), a polyester or a copolymer of mono-definically unsaturated monomers.
Claim 5
Dependent Claim
33 words
A process for the production of a composition as claimed in claim 1 which comprises mixing (A) and (B) so that the mixture contains from 0.5 to 1.5 1,2-epoxide group per carboxyl group.
Claim 6
Dependent Claim
51 words
A process as claimed in claim 4, in which (A) and (B) and, optionally (C) one or more auxiliaries or additives, are homogenised in an extruder at from 70° to 140° C. and the solidified, fusible, uncross-linked extrudate is ground to an average particle size of from 20 to 500 μm.
Claim 7
Dependent Claim
22 words
A process for the production of a coated substrate which comprises applying to a substrate a composition as claimed in claim 1.
Claim 8
Dependent Claim
16 words
A substrate which has applied thereto a coating comprising a composition as claimed in claim 1.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |