Abstract:
PROBLEM TO BE SOLVED: To obtain a photocurable composition good in mechanical strength, high in weather resistance and chemical resistance, and excellent in reactivity and compatibility with support members. SOLUTION: This composition comprises at least one kind of prepolymer having >=2 olefin-based double bonds per its molecule (referred to as component A) and at least one kind of bifunctional ester resulted from a α,β-ethylene-based unsaturated carboxylic acid with a diol having a linear alkylene chain with 7 to 14 of carbon atoms. The component A is a prepolymer having at least 2 of olefin-based double bonds and an urethane group.
Abstract:
PROBLEM TO BE SOLVED: To obtain a coating material radiation-curable on substrates such as metal, leather and wood by mixing a water-dispersible polymer and a water- soluble compound each of which is radiation-curable and having α,β-ethylenic unsaturations with water in a specified ratio. SOLUTION: 5.0-90.0 wt.% water-dispersible polymer being radiation- polymerizable and having at least one α,β-ethylenic unsaturation (e.g. ester of an α,β-ethylenically unsaturated monocarboxylic acid with a hydroxyl- containing polycondensate) is mixed with 0.1-90 wt.% compound (e.g. aliphatic epoxide acrylate) being radiation-polymerizable, having at least one α,β-ethylenic unsaturtion and being water-soluble or capable of being diluted with at least 10 wt.%, based on the total weight of the material, water, at most 20 wt.% arbitrary photoinitiator, at most 60 wt.% filler, at most 20 wt.% additive and water. Thus, a high-solid-content coating material which requires no physical drying after application can be obtained.
Abstract:
The invention relates to a method for producing molding materials and coatings on substrates by curing radiation curable materials under a protective gas, by irradiation with light. The method is characterized in that said protective gas is a gas that is heavier than air and in that the protective gas is prevented from escaping sideways during the radiation curing by a suitable device or measures.
Abstract:
A radiation-curable urethane(meth)acrylate, a process for preparing a radiation-curable urethane(meth)acrylate, and a coating composition comprising a radiation-curable urethane(meth)acrylate, in which the radiation-curable urethane(meth)acrylate is tough and resilient and useful in coating systems for a variety of substrates.
Abstract:
A process for improving the adhesion of radiation curable acrylate resins, containing an amine group and a radiation curable unsaturated acrylate group, to a substrate is claimed. The acrylate resin is mixed with a curable polyepoxide compound having an epoxy value of 1-15 mol/kg, the mixture applied to the substrate and cured with energetic radiation at greater than 50 degrees C.
Abstract:
A radiation curable composition (I) comprises: (A) a prepolymer containing at least two olefinic double bonds per molecule; and (B) a diester of an alpha , beta -ethylenically unsaturated carboxylic acids with diols, having a linear 7-14C alkylene chain. Independent claims are included for: (i) a process for coating a substrate by application of (I) and curing by UV or electron beam irradiation; and (ii) the resulting coated substrate.
Abstract:
A radiation-curable urethane(meth)acrylate, a process for preparing a radiation-curable urethane(meth)acrylate, and a coating composition comprising a radiation-curable urethane(meth)acrylate, in which the radiation-curable urethane(meth)acrylate is tough and resilient and useful in coating systems for a variety of substrates.
Abstract:
A process for improving the adhesion of radiation curable acrylate resins, containing an amine group and a radiation curable unsaturated acrylate group, to a substrate is claimed. The acrylate resin is mixed with a curable polyepoxide compound having an epoxy value of 1-15 mol/kg, the mixture applied to the substrate and cured with energetic radiation at greater than 50 degrees C.