Invention Grant
- Patent Title: Spherical powder containing crosslinked body formed having polyrotaxane, and method for producing same
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Application No.: US16342847Application Date: 2017-10-16
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Publication No.: US11053357B2Publication Date: 2021-07-06
- Inventor: Yuki Hayashi , Keiko Nishita , Kohei Fujita , Hiromi Murakami , Katsumi Sakamoto
- Applicant: ASM INC. , HAYAKAWA RUBBER CO., LTD.
- Applicant Address: JP Chiba; JP Hiroshima
- Assignee: ASM INC.,HAYAKAWA RUBBER CO., LTD.
- Current Assignee: ASM INC.,HAYAKAWA RUBBER CO., LTD.
- Current Assignee Address: JP Chiba; JP Hiroshima
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Priority: JPJP2016-203644 20161017
- International Application: PCT/JP2017/037328 WO 20171016
- International Announcement: WO2018/074404 WO 20180426
- Main IPC: C08G83/00
- IPC: C08G83/00 ; C08F290/06 ; C08F290/10 ; C08G18/40 ; C08G65/26 ; C08J3/12

Abstract:
The present invention provides a spherical powder having properties, such as an excellent strength, toughness, and deformation recovery, and provides a method for producing same. The present invention provides: a spherical powder containing a crosslinked body formed having (A) a polyrotaxane in which both ends of a pseudopolyrotaxane, which are formed by inclusion of the opening of a cyclic molecule by threading therethrough with a linear molecule, are provided with a capping group so that dethreading of the linear molecule is prevented, in particular, a spherical powder having an average particle diameter of 0.5 to 1,000 μm, preferably 1 to 500 μm, more preferably 1 to 300 μm, and still more preferably 1 to 150 μm; and a method for producing this spherical powder.
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