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THERMALLY EXPANDABLE MICROCAPSULE, METHOD FOR PRODUCING THERMALLY EXPANDABLE MICROCAPSULE, FOAMABLE MASTERBATCH AND FOAM MOLDED ARTICLE
THERMALLY EXPANDABLE MICROCAPSULE, METHOD FOR PRODUCING THERMALLY EXPANDABLE MICROCAPSULE, FOAMABLE MASTERBATCH AND FOAM MOLDED ARTICLE
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机译:热膨胀性微囊,生产热膨胀性微囊,可发泡母料和泡沫模制品的方法
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摘要
The present invention provides a thermally expandable microcapsule that is excellent in heat resistance and durability and exhibits an excellent foaming property in a wide temperature range from low temperatures to high temperatures. The present invention is a thermally expandable microcapsule, which comprises a shell containing a copolymer, and a volatile liquid as a core agent included in the shell, the copolymer being obtainable by polymerization of a monomer mixture containing a monomer A and a monomer B, the monomer A being at least one selected from the group consisting of a nitrile group-containing acrylic monomer and an amide group-containing acrylic monomer, the monomer B being at least one selected from the group consisting of a carboxyl group-containing acrylic monomer and an ester group-containing acrylic monomer, a total amount of the monomer A and the monomer B accounting for 70% by weight or more of the monomer mixture, and a weight ratio of the monomer A and the monomer B being 5:5 to 9:1.
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