- MULTIFUNCTIONAL (METH)ACRYLATE MANUFACTURING METHOD
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[Problem] The purpose of the present invention is to obtain a multifunctional (meth)acrylate with good yield by an ester exchange reaction of a polyhydric alcohol such as pentaerythritol or dipentaerythritol with a monofunctional (meth)acrylate. [Solution] A multifunctional (meth)acrylate manufacturing method characterized in that when manufacturing a multifunctional (meth)acrylate by an ester exchange reaction of a polyhydric alcohol with a monofunctional (meth)acrylate, catalyst (A) and catalyst (B) are used together. Catalyst (A): One or more kinds of compounds selected from a group consisting of cyclic tertiary amines with an azabicyclo structure or salts or complexes thereof, amidines or salts or complexes thereof, and compounds with a pyridine ring or salts or complexes thereof. Catalyst (B): One or more kinds of compounds selected from a group consisting of zinc-containing compounds.
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Paragraph 0064; 0065; 0088
(2017/08/07)
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- METHOD FOR MANUFACTURING (METH)ACRYLOYL GROUP-CONTAINING POLYOL COMPOUND, (METH)ACRYLOYL GROUP-CONTAINING POLYOL COMPOUND, AND URETHANE (METH)ACRYLATE
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To provide a simple, efficient method for manufacturing a (meth)acryloyl group-containing polyol compound, a (meth)acryloyl group-containing polyol compound produced by the manufacturing method, and an urethane (meth)acrylate produced by using the compound.A method for manufacturing a (meth)acryloyl group-containing polyol compound (x3) includes the steps of producing a hydroxyl group-containing ketal compound (x1) by reacting a polyol compound (A) having at least three hydroxyl groups in the molecular structure with a cyclic ketone compound (B) at the proportion in which the ratio [(OH)/(CO)] of the number of moles of hydroxyl groups (OH) included in the polyol compound (A) to the number of moles of carbonyl groups (CO) included in the cyclic ketone compound (B) falls within the range of 3 to 12 in an organic solvent (S) in the presence of an acid catalyst, producing a (meth)acrylate compound (x2) by (meth)acrylating hydroxyl groups included in the resulting hydroxyl group-containing ketal compound (x1), and hydrolyzing the resulting (meth)acrylate compound (x2).
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Paragraph 0062-0063
(2015/01/16)
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