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公开(公告)号:US20180056267A1
公开(公告)日:2018-03-01
申请号:US15554527
申请日:2016-02-19
CPC分类号: B01J13/18 , B01J13/185 , C08F2/18 , C08F2/20 , C08F2/44 , C08F214/08 , C08F220/14 , C08J9/0061 , C08J9/32 , C08J2203/22 , C08J2423/08 , C09K3/00 , C08F220/44 , C08F2222/1013
摘要: Heat-expandable microspheres having an expansion temperature which can be decreased by a simple means without changing the polymerizable monomer and its ratio and/or changing the blowing agent and its ratio, and applications thereof. The heat-expandable microspheres are composed of a thermoplastic resin shell and a core material encapsulated therein. The core material contains a thermally-vaporizable blowing agent which imparts a swelling degree of less than 5% as defined by the following formula (I) and a component (A) which imparts a swelling degree of 5 to 30% as defined by the following formula (I), wherein an amount of the component (A) ranges from 0.0001 to 30 parts by weight to 100 parts by weight of the blowing agent: Swelling degree (%)={(M2−M1)/M1}×100 (I) wherein M2 and M1 are as defined herein.