US4861806A
Expired / Lapsed
US
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Process for curing polyisocyanate coatings in the presence of a ferrocenium compound
Assignee: BASF Corp
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Filing: 1987-09-14
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Granted: 1989-08-29
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Expires: 2007-09-14
Abstract
Abstract Coatings of polyisocyanates, which contain a latent catalyst of the formula I [(R.sup.1) Fe.sup.II (R.sup.2)].sub.a.sup.+ [X].sup.a- I in which a is 1, 2 or 3, R 1 is an uncharged carbocyclic or heterocyclic, unsubstituted or substituted aromatic ring, R 2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion and [X] a- is an anion from the series comprising F - , Cl - , Br - , I - , CN - , NCO - , NCS - , CH 3 COO - , CF 3 COO - , SO 4 2- , PO 4 3- , NO 3 - , ClO 4 - , [(phenyl) 4 B] - , C 6 H 5 SO 3 - , CH 3 C 6 H 4 SO 3 - , CF 3 C 6 H 4 SO 3 - , CH 3 SO 3 - , CF 3 SO 3 - , C 4 F 9 SO 3 - , C 6 F 13 SO 3 - , C 8 F 17 SO 3 - , C 6 F 5 SO 3 - , BF 4 .sup. -, AlF 4 - , AlCl 4 - , TiF 6 2- , PF 6 - , SbF 6 - , SbCl 6 - , GeF 6 - , ZrF 6 2- , AsF 6 - , FeCl 4 - , SnF 6 - , SnCl 6 - or BiCl 6 - , can be cured by irradiation with actinic light and subsequent heating.
Inventors
- 👤 Manfred Rembold
- 👤 Franciszek Sitek
- 👤 Werner Rutsch
- 👤 Godwin Berner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:53
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; C; C08; C08G; C08G18/00; C08G18/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
281 words
A process for curing polyisocyanate coatings, which comprises adding a ferrocenium compound of formula I [(R.sup.1)Fe.sup.II (R.sup.2)].sub.a.sup.+ [X].sup.a- in which a is 1, 2 or 3, R 1 is an uncharged carbocyclic unsubstituted aromatic ring, an uncharged carbocyclic substituted aromatic ring, an uncharged heterocyclic unsubstituted aromatic ring or an uncharged heterocyclic substituted aromatic ring R 2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion and [X] a- is an anion which is F - , Cl - , Br - , I - , CN - , NCO - , NCS - , CH 3 COO - , CF 3 COO - , SO 4 2- , PO 4 3- , NO 3 - , ClO 4 - , [(phenyl) 4 B] - , C 6 H 5 SO 3 - , CH 3 C 6 H 4 SO 3 - CF 3 C 6 H 4 SO 3 - , CH 3 SO 3 - , CF 3 SO 3 - , C 4 F 9 SO 3 - , C 6 F 13 SO 3 - , C 8 F 17 SO 3 - , C 6 F 5 SO 3 - , BF 4 - , AlF 4 - , AlCl 4 - , TiF 6 - , PF 6 - , SbF 6 - , SbCl 6 - , GeF 6 - , AsF 6 - , FeCl 4 - , SnF 6 - , SnCl 6 - , or BiCl 6 - , as a latent curing catalyst to at least one polyisocyanate, applying the resulting mixture to a substrate as a coating, irradiating the coating with actinic light and then heating to 60°-200° C.
Claim 2
Dependent Claim
281 words
A process for curing polyisocyanate coatings, which comprises adding a ferrocenium compound of formula I [(R.sup.1)Fe.sup.II (R.sup.2)].sub.a.sup.+ [X].sup.a- in which a is 1, 2 or 3, R 1 is an uncharged carbocyclic unsubstituted aromatic ring, an uncharged carbocyclic substituted aromatic ring, an uncharged heterocyclic unsubstituted aromatic ring or an uncharged heterocyclic substituted aromatic ring R 2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion and [X] a- is an anion which is F - , Cl - , Br - , I - , CN - , NCO - , NCS - , CH 3 COO - , CF 3 COO - , SO 4 2- , PO 4 3- , NO 3 - , ClO 4 - , [(phenyl) 4 B] - , C 6 H 5 SO 3 - , CH 3 C 6 H 4 SO 3 - CF 3 C 6 H 4 SO 3 - , CH 3 SO 3 - , CF 3 SO 3 - , C 4 F 9 SO 3 - , C 6 F 13 SO 3 - , C 8 F 17 SO 3 - , C 6 F 5 SO 3 - , BF 4 - , AlF 4 - , AlCl 4 - , TiF 6 - , PF 6 - , SbF 6 - , SbCl 6 - , GeF 6 - , AsF 6 - , FeCl 4 - , SnF 6 - , SnCl 6 - , or BiCl 6 - , as a latent curing catalyst to at least one polyisocyanate, applying the resulting mixture to a substrate as a coating, irradiating the coating with actinic light and then heating to 60°-200° C.
Claim 3
Dependent Claim
14 words
A process according to claim 1, wherein the polyisocyanate comprises a mixture of polyisocyanates.
Claim 4
Dependent Claim
18 words
A process according to claim 1, wherein the polyisocyanate comprises a mixture of an aliphatic diisocyanate or triisocyanate.
Claim 5
Dependent Claim
18 words
A process according to claim 1, wherein a minor quantity of a monoisocyanate is added to the polyisocyanate.
Claim 6
Dependent Claim
26 words
A process according to claim 1, wherein 0.05 to 10% by weight, relative to the polyisocyanate, of the curing catalyst of the formula I is added.
Claim 7
Dependent Claim
43 words
A process according to claim 1, wherein the catalyst added is a compound of the formula I, in which R 1 is benzene, toluene, xylene, cumene, methoxybenzene, chlorobenzene, 4-chlorotoluene, naphthalene, methylnaphthalene, chloronaphthalene, methoxynaphthalene, diphenyl, indene, pyrene, diphenylene sulfide, diphenyl ether, stilbene or 9-(4-butylbenzyl)-anthracene.
Claim 8
Dependent Claim
27 words
A process according to claim 1, wherein the catalyst added is a compound of the formula I, in which R 1 is toluene, xylene, cumene or 4-chlorotoluene.
Claim 9
Dependent Claim
31 words
A process according to claim 1, wherein the catalyst added is a compound of the formula I, in which R 2 is a cyclopentadienyl or (C 1 -C 4 -alkyl)-cyclopentadienyl anion.
Claim 10
Dependent Claim
67 words
A process according to claim 1, wherein the catalyst added is a compound of the formula I, in which a is 1 and X - is an anion from the series BF 4 , PF 6 , SbF 6 , AsF 6 , CF 3 SO 3 , C 4 DF 9 SO 3 , C 8 F 17 SO 3 or CF 3 COO - .
Claim 11
Dependent Claim
16 words
A process according to claim 16, wherein the wavelength of the actinic light is 200-600 nm.
Claim 12
Dependent Claim
14 words
A coating, obtained by curing a polyisocyanate according to the process of 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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |