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EP0632111A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Coating process using radiation curable compositions

Assignee: University of Pittsburgh
•
Filing: 1994-07-01
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Granted: —
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Expires: 2014-07-01
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Abstract

Abstract A process is provided whereby radiation curable compositions comprising N-vinylformamide and an oligomer selected from the group consisting of epoxy-acrylate resins, polyester acrylate resins, polyurethane acrylate resins, acrylic acrylate resins, silicone acrylate resins, unsaturated polyester resins, maleate ester resins, vinyl ether resins and mixtures thereof are applied to the surface of a substrate and subsequently exposed to a radiation source until an adherent dry polymerized film is formed on the substrate. These compositions are useful for a wide range of applications including pigmented and unpigmented coatings, printing inks, adhesives and the like.

Inventors

  • 👤 David Arthur Cornforth
  • 👤 Walter Louis Renz
  • 👤 Dawn Howel

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 21:11
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; C; C08; C08F; C08F290/00; C08F290/02; C09; C09D; C09D4/00; C09D4/06

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 73 words
A process for coating a substrate comprising applying to said substrate a curable composition which composition comprises N-vinylformamide and an oligomer selected from the group consisting of epoxyacrylate resins, polyester acrylate resins, polyurethane acrylate resins, acrylic acrylate resins, silicone acrylate resins, unsaturated polyester resins, maleate ester resins, vinyl ether resins and mixtures thereof; and exposing the coated substrate to a radiation source until an adherent dry polymerized film is formed on the substrate.
Claim 2
Dependent Claim 12 words
The process of Claim 1 wherein said coating composition contains a photoinitiator.
Claim 3
Dependent Claim 16 words
The process of Claim 1 wherein said coating composition contains between 2 and 40 wt% N-vinylformamide.
Claim 4
Dependent Claim 20 words
The process of Claim 1 wherein said coating composition also contains a mono-, di-, or poly-functional vinyl or acrylic monomer.
Claim 5
Dependent Claim 19 words
The process of Claim 1 wherein said curable composition has a viscosity of between about 32.5 and 10.0 poise.
Claim 6
Dependent Claim 13 words
The process of Claim 2 wherein said photoinitiator is a free radical photoinitiator.
Claim 7
Dependent Claim 15 words
The process of Claim 6 wherein said free radical photoinitiator is benzophenone or benzoin ether.
Claim 8
Dependent Claim 20 words
The process of Claim 2 wherein said composition also contains a monomer which acts as an activator for the photoinitiator.
Claim 9
Dependent Claim 15 words
The process of Claim 1 wherein said radiation source produces wavelengths less than 700 nm.
Claim 10
Dependent Claim 17 words
The process of Claim 1 wherein said radiation source produces actinic radiation having wavelengths from 180-440 nm.

References Cited (Backward Citations)

GB2055860A Cited
US4348427A Cited
EP0368218A2 Cited

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