Patent US4340453A successfully refreshed from Google Patents.
US4340453A
Expired / Lapsed
US
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U.V.-Curable resin with amine accelerator
Assignee: Akzo NV
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Filing: 1980-04-09
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Granted: 1982-07-20
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Expires: 2000-04-09
Abstract
Abstract A coating composition is disclosed which is curable under the influence of ultraviolet light and which comprises a U.V.-curable binder, a photoinitiator and as accelerator a polycyclic condensation product of formaldehyde or acetaldehyde and an aliphatic or cycloaliphatic diprimary 1,2-diamine. The U.V.-curable binder is preferably an adduct containing at least one isocyanate group of (a) an acrylic or methacrylic hydroxy ester having 5 to 20 carbon atoms and (b) a polyisocyanate having 4 to 44 carbon atoms and 2 to 4 isocyanate groups.
Inventors
- 👤 Arie Noomem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:29
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C09; C09D; C09D4/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
46 words
A coating composition which is curable under the influence of ultraviolet light and is based on a U.V.-curable binder, a photoinitiator and a nitrogen-containing accelerator, characterized in that the accelerator is a polycyclic condensation product of formaldehyde and/or acetaldehyde and an aliphatic and/or cycloaliphatic diprimary 1,2-diamine.
Claim 2
Dependent Claim
46 words
A coating composition which is curable under the influence of ultraviolet light and is based on a U.V.-curable binder, a photoinitiator and a nitrogen-containing accelerator, characterized in that the accelerator is a polycyclic condensation product of formaldehyde and/or acetaldehyde and an aliphatic and/or cycloaliphatic diprimary 1,2-diamine.
Claim 3
Dependent Claim
24 words
The coating composition of claim 1, wherein the accelerator is built up from formaldehyde and/or acetaldehyde and from a diamine having 2-26 carbon atoms.
Claim 4
Dependent Claim
13 words
The coating composition of claim 1, wherein the diamine contains 2-12 carbon atoms.
Claim 5
Dependent Claim
13 words
The coating composition of claim 1, wherein the diamine is ethylenediamine and/or 1,2-propylenediamine.
Claim 6
Dependent Claim
25 words
The coating composition of claim 1, wherein the accelerator is the polycondensation product of 1-5 moles of formaldehyde and/or acetaldehyde and 1 mole of diamine.
Claim 7
Dependent Claim
25 words
The coating composition of claim 1, wherein the accelerator is the polycondensation product of 1-3 moles of formaldehyde and/or acetaldehyde and 1 mole of diamine.
Claim 8
Dependent Claim
48 words
The coating composition of claim 1, wherein the UV-curable binder is an at least one isocyanate group-containing adduct of (a) an acrylic or methacrylic hydroxy ester having 5 to 20 carbon atoms and (b) a polyisocyanate having 4 to 44 carbon atoms and 2 to 4 isocyanate groups.
Claim 9
Dependent Claim
15 words
The coating composition of claim 1, wherein the UV-curable binder is an unsaturated epoxy resin.
Claim 10
Dependent Claim
33 words
A coating composition adapted to be cured on a substrate by exposure to ultraviolet light comprising an ultra violet light curable ethylenically unsaturated resin, a photoinitiator and a 1,4-endomethylene-1,4-diazacyclopentane or a 1,4-endoethylidene-1,4-diazacyclopentane accelerator.
Claim 11
Dependent Claim
33 words
A coating composition adapted to be cured on a substrate by exposure to ultraviolet light comprising an ultra violet light curable ethylenically unsaturated resin, a photoinitiator and a 1,4-endomethylene-1,4-diazacyclopentane or a 1,4-endoethylidene-1,4-diazacyclopentane accelerator.
Claim 12
Dependent Claim
16 words
The coating composition of claim 9 containing an ethylenically unsaturated monomer in mixture with said resin.
Claim 13
Dependent Claim
60 words
The coating composition of claim 10 wherein the said ethylenically unsaturated resin is a reaction product of an unsaturated polyester and an organic polyisocyanate, said reaction product having at least one unreacted-NCO group, and the accelerator is the reaction product of ethylene diamine or propylene diamine with formaldehyde or acetaldehyde having the formula ##STR1## wherein R is hydrogen or methyl.
Claim 14
Dependent Claim
30 words
A process for coating a substrate which comprises applying to the substrate the composition of claim 9 and exposing the resulting coating to ultraviolet light until the coating is cured.
Claim 15
Dependent Claim
30 words
A process for coating a substrate which comprises applying to the substrate the composition of claim 11 and exposing the resulting coating to ultraviolet light until the coating is cured.
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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |