Abstract:
PROBLEM TO BE SOLVED: To provide a mixture of acrylic compounds or methacrylic compounds comprising 40-95 wt.% of epoxide (meth)acrylate based on the acrylic compounds or the methacrylic compounds. SOLUTION: A mixture is obtained by a method comprising the following steps: (a) esterifying a hydroxy compound using acrylic acid or methacrylic acid; (b) if necessary, adding additional acrylic acid or methacrylic acid; and (c) subsequently, reacting an excess amount of acrylic acid or methacrylic acid with epoxides in the presence of the esterified product obtained in the step (a).
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a radiation-curable urethane- functional prepolymer PU, by reacting an isocyanate-functional component A with an OH-containing component B. SOLUTION: A component A comprises at least one trifunctional isocyanate compound A1 and optionally one or more bifunctional isocyanate compound A2. An OH-containing component B is composed of at least one OH-containing compound B1 containing at least one reactive OH group and optionally a different OH-containing compound B2. In the production, the component A consists of the two different isocyanate compounds A1 or one isocyanate compound A1 and at least one isocyanate compound A1 or the component B is composed of at least the two different compounds B1.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for easily producing a (meth)acrylic ester by which a light color esterification product is obtained in high yield. SOLUTION: This method for producing a (meth)acrylic ester comprises esterifying acrylic acid and/or methacrylic acid with at least one compound having at least one alcoholic hydroxyl group while adding to the reaction system a hydrocarbon with a boiling point of 60-140 deg.C as a water azeotropic agent at 90-150 deg.C in the presence of an acidic esterification catalyst and a polymerization inhibitor, and after esterification, distilling the water azeotropic agent and excess (meth)acrylic acid off at 90-150 deg.C under a normal or reduced pressure, and if necessary, neutralizing the product obtained after distillation with at least one basic inorganic compound, wherein a copper (II) salt or a mixture composed of the copper (II) salt and a copper (I) salt to be deposited after esterification as a copper sulfide and separated is used as the polymerization inhibitor.
Abstract:
PROBLEM TO BE SOLVED: To obtain a hardenable polyurethane polymer capable of providing an unhardened and dried coating film hardenable by radiation and having a good pendulum hardness, a high hardness and scratch resistance, and further capable of providing a hardened film having a high hardness and good flexibility by including a specific hydroxy-containing prepolymer in a specified proportion in a copolymerized state. SOLUTION: This hardenable polyurethane polymer comprises (A) 40-80 wt.% one or more kinds of OH group-containing prepolymers having one or more radically or photochemically polymerizable α,β-ethylenically unsaturated double bonds (based on the whole weight), (B) 0.1-20 wt.% one or more kinds of compounds having one or more isocyanate-reactive OH groups and/or primary or secondary amino groups, and further one or more polar functional groups, (C) 0.1-10 wt.% compound selected from a diamine, a polyamine and a mixture thereof, and (D) 10-50 wt.% one or more kinds of polyisocyanates in a copolymerized state. The OH value of the components A to C is 121-300 mg- KOH/g.
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 provide a method for separating an organic phase and an aqueous phase produced by an esterification. SOLUTION: At least one organic polymeric, anionic and water-soluble flocculant is used in a method for the phase separation of an organic-aqueous system containing unreacted residues of a carboxylic acid anhydride, a carboxylic acid or an alcohol used for producing an acrylate, a diacrylate, a (poly)ester acrylate or a (poly)ether acrylate and an acrylate which are substantially monomers. The flocculant is selected from a functional high-molecular weight polymer containing a carboxylic acid, a sulfonic acid, a phosphoric acid and/or a phosphonic acid functional groups and an anionic-modified polyacrylamide is preferred. The anionic flocculant has 4-22 Mda molecular weight.
Abstract:
The invention concerns a method for the production of coatings, adhesive layers or seals for primed or unprimed substrates, wherein (1) at least one coating material that can be hardened thermally and/or with actinic radiation and/or an adhesive and/or at least one sealant that can be hardened thermally and/or with actinic radiation in the form of a powder slurry is applied on and/or to the primed or unprimed substrate; (2) the resulting powder slurry layer is dried; (3) the resulting solid layer (2) is molten by heating and (4) the resulting molten layer obtained in step (3) of the method is hardened with near infrared radiation (NIR) in its molten state during and/or after solidification.
Abstract:
The use of an amine with an average pKs of 1 to 14 as a washing power enhancer, preferably in textile detergents, especially for washing coloureds, and detergent formulations containing said amines.
Abstract:
The invention relates to a method for carrying out the enzymatic synthesis of polyol acrylates, to a method for producing polymeric polyol acrylates, to the polymers that can be obtained according to this method, and to the their use for producing radiation-curable and thermally curable paints.