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METHOD FOR PRODUCING PHOTOCURABLE FLUORO-MODIFIED URETHANE ACRYLATE OLIGOMER HAVING EXCELLENT HEAT RESISTANCE
METHOD FOR PRODUCING PHOTOCURABLE FLUORO-MODIFIED URETHANE ACRYLATE OLIGOMER HAVING EXCELLENT HEAT RESISTANCE
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机译:具有优异耐热性的可光化荧光改性的氨基甲酸酯丙烯酸酯低聚物的制备方法
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摘要
PURPOSE: Provided is a method for producing photocurable fluoro-modified urethane acrylate oligomer useful for a photocurable coating composition that improves heat resistance when coated on electric devices, car lamps and other materials. CONSTITUTION: The method for producing photocurable fluoro-modified urethane acrylate oligomer represented by formula 1 comprises the steps of: reacting a polyester polyol represented by formula 2 with a part of isocyanate functional groups(NCO) of an aliphatic or aromatic isocyanate, or an oligomer thereof; reacting a part of unreacted isocyanate groups with at least one of a fluoro compound represented by formula 4, i.e., CpF2p+1-R8-OH (wherein R8 is a C1-C10 alkylene and p is an integer of 1-10) or formula 5, or a mixture thereof; and subjecting the remaining unreacted isocyanate groups to the addition reaction with a hydroxy-containing acrylate represented by formula 6. In the above formulae, R3 is an aliphatic, cyclic or aromatic compound or oligomers thereof; X is the compound of formula 4 or 5, or a mixture thereof; each of l and m is 1-6; each of R4 and R5 is a C2-C10 aliphatic or aromatic compound; n is 1-20; R9 is any one of F, CF3, CH2F and CHF2; q is an integer of 1-5; R10 is a C1-C10 alkylene; R11 is H or CH3; and R11 is a C2-C6 alkylene.
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