Abstract:
A radiation-curable composition in a liquid or solid form comprises at least one solid, non-crystalline radiation-transmissible material, dispersed in at least one cationic-curable or free-radical curable composition or mixture thereof. The solid, non-crystalline radiation-transmissible materials comprise glasses and other suitable materials that transmit (i.e., are transparent to) at least about 40% of radiation having a wavelength from about 180 to about 600 nanometers. The cationic-curable compositions comprise at least one cycloaliphatic epoxide, at least one polyol, and at least one cation-generating photoinitiator. The free-radical curable compositions comprise at least one ethylenically unsaturated compound and at least one free-radical-generating photoinitiator unless electron beam curing is used, in which case the amount of photoinitiator can be reduced or even eliminated. The solid forms of the radiation-curable compositions of the invention are useful as powder coatings for coating decorative and functional objects and that would be cured by a thermal heating flow process followed by radiation exposure. The cured compositions of the invention are useful as coatings and inks for metal, paper, plastics, glass, ceramics, and wood, as adhesives, as sealants, and as composite materials and other articles. The cured compositions of this invention also are useful in biomedical and dental applications, including prosthetic devices such as dentures; coatings, fillings, and caps for teeth; and the like.
Abstract:
A radiation-curable composition in a liquid or solid form comprises at least one solid, non-crystalline radiation-transmissible material, dispersed in at least one cationic-curable or free-radical curable composition or mixture thereof. The solid, non-crystalline radiation-transmissible materials comprise glasses and other suitable materials that transmit (i.e., are transparent to) at least about 40% of radiation having a wavelength from about 180 to about 600 nanometers. The solid forms of the radiation-curable compositions of the invention are useful as powder coatings for coating decorative and functional objects and that would be cured by a thermal heating flow process followed by radiation exposure. The cured compositions of the invention are useful as coatings and inks for metal, paper, plastics, glass, ceramics, and wood, as adhesives, as sealants, and as composite materials and other articles and in biomedical and dental applications.
Abstract:
This invention relates to polyurethane (meth)acrylates that are prepared from certain liquid hydrocarbon diols and/or derivatives of said liquid hydrocarbon diols, polyfunctional isocyanates, and hydroxyalkyl acrylates and methacrylates. The polyurethane (meth)acrylates are useful as decorative and functional coatings, inks, adhesives, sealants, and formed parts.
Abstract:
A process for texturing a coating via exposing a photocurable composition comprising a multifunctional urea compound, an ethylenically unsaturated compound, and an aromatic ketone photosensitizer that functions through a hydrogen abstraction mechanism when exposed to ultraviolet light.
Abstract:
This invention is directed to polymers (including oligomers) that contain (N-substituted carbamoyloxy)alkanoyloxyalkyl acrylates, to a process for their preparation by reacting the carbamoyloxy alkanoyloxyalkyl acrylates with themselves, with lactone acrylates, and/or with other ethylenically unsaturated monomers, and to coating, ink, adhesive, and sealant compositions (including the cured coatings, inks, adhesives, and sealants) that are obtained by curing the above compositions by various means. The cured compositions, which are, for example, high-quality industrial finishes, sealants or encapsulants, are preferably made by incorporation of various conventional crosslinking agents and other normally-used formulating ingredients with the polymeric compositons of the invention.
Abstract:
A curable composition based on a cycloaliphatic polyepoxide, a polytetramethylene oxide polyol and a photoinitiator; and a circuit board having as a conformal coating thereon, the cured product of the curable composition.
Abstract:
Described herein are photocopolymerizable compositions comprising a cycloaliphatic epoxide an alkylene oxide derived polyol having an average molecular weight of from about 2000 to about 4500 and a photoinitiator. These compositions are particularly suited for coating paper, wood, metal, and plastic substrates.
Abstract:
This invention is directed to polymers (including oligomers) that contain (N-substituted carbamoyloxy)alkanoyloxyalkyl acrylates, to a process for their preparation by reacting the carbamoyloxy alkanoyloxyalkyl acrylates with other ethylenically unsaturated monomers, and to coating, ink, adhesive, and sealant compositions (including the cured coatings, inks, adhesives, and sealants) that are obtained by crosslinking the above compositions by various means. The cured compositions, which are, for example, high-quality industrial finishes, sealants or encapsulants, are made by incorporation of various conventional crosslinking agents and other normally-used formulating ingredients with the polymeric compositions of the invention.
Abstract:
Described herein are compositions suitable for photocopolymerization comprising (a) an epoxide containing two or more epoxy groups, and (b) a hydroxyl substituted cycloaliphatic monoepoxide. The composition may additionally contain a poly (active hydrogen) organic compound and/or a photoinitiator. A coating produced from such a composition has a good combination of properties.
Abstract:
This invention is directed to adducts of a polycaprolactone polyol and a polyepoxide comprising the reaction product of at least one polycaprolactone polyol and a polyepoxide containing two or more epoxy groups per molecule in a molar ratio of polycaprolactone polyol to polyepoxide of from about 2:1 to about 3:1, said adducts having an oxirane content of less than about 0.10 percent and a viscosity of less than about 3700 centistokes at 54.5.degree. C. The adducts are useful in the formulation of high solids coating compositions, polyurethane elastomers, inks, sealants, adhesives and the like.