Radiation curing of powder coatings on wood
March 6, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for forming coating films Method of applying powder coatings of unsaturated branched hydroxyester resins Method and apparatus for coating tile Method of powder coating an insulated electrical conductor Protective composition and method Photocurable compositions for use as ceramic ink vehicles Adhesive blends and composite structures Composite structures Composite structures Conductive coatings InventorsAssigneeApplicationNo. 611970 filed on 03/06/1996US Classes:427/474, Solid particles applied427/485, Coating contains organic material427/514, Coating material includes colorant or pigment427/517, Coating includes specified rate affecting material427/519, Keto or aldehyde containing group is part of the rate affecting coating material (e.g., benzoin, benzophenone, acetaldehyde, etc.)427/520Benzene ring or nitrogen containing coating materialExaminersPrimary: Padgett, MarianneAttorney, Agent or FirmForeign Patent References
International ClassesB05D 001/04B05D 007/24 C08J 007/18 C08F 004/00 AbstractPowder coatings are described which are curable by means of exposure to radiation, typically ultraviolet radiation, and the electrostatic deposition thereof onto substrates of wood or similar materials. Free radical curing coatings are described using specific chemical formulations of acrylourethane resins, unsaturated polyester resins and mixtures thereof in combination with morpholino, phenol, phosphine and ketal photoinitiators. Electrostatic application onto wooden substrates involves grounding of the substrate, electrostatic deposition and, typically, heating the substrate to flow the coating into a smooth finish prior to radiation curing. Moisture and humidity controls may also be used to improve the electrostatic coating process.Other References
Field of SearchHeating or fusing applied coatingSolid particles applied Coating contains organic material Synthetic resin particles Polymerization of coating utilizing direct application of electrical, magnetic, wave, or particulate energy (i.e., including cross-linking, curing, and hardening of organics) Coating material includes colorant or pigment Benzene ring or nitrogen containing coating material Coating material includes colorant or pigment Coating includes specified rate affecting material Keto or aldehyde containing group is part of the rate affecting coating material (e.g., benzoin, benzophenone, acetaldehyde, etc.) Benzene ring or nitrogen containing coating material | |
