公开(公告)号：US11723280B2

公开(公告)日：2023-08-08

申请号：US16490154

申请日：2018-03-01

申请人： MITSUI CHEMICALS, INC. ,  THE SCHOOL CORPORATION KANSAI UNIVERSITY

发明人： Yoshiro Tajitsu ,  Yuzo Nakamura ,  Tomoya Matayoshi ,  Takayuki Watanabe ,  Michio Eriguchi

IPC分类号： H01L41/193 ,  H10N30/857 ,  B06B1/02

CPC分类号： H10N30/857 ,  B06B1/0292

摘要： An electretized film of the present invention includes a cyclic olefin polymer, in which the electretized film is a non-porous film, and a piezoelectric constant d33 in a thickness direction, which is measured by applying a pressing force to the electretized film in the thickness direction, under conditions of a load of 0.5 N, a dynamic load of ±0.25 N, a frequency of 110 Hz, a temperature of 23° C., and a humidity of 50%, is equal to or more than 100 pC/N.

公开(公告)号：US11332643B2

公开(公告)日：2022-05-17

申请号：US16629719

申请日：2018-07-10

申请人： MITSUI CHEMICALS, INC.

发明人： Jun Kamada ,  Tomoya Matayoshi ,  Michio Eriguchi ,  Kaichiro Haruta ,  Kenichi Fujii ,  Takashi Unezaki ,  Kazuo Kohmura

IPC分类号： C09J7/25 ,  B32B3/30 ,  B32B7/022 ,  B32B27/08 ,  B32B27/32 ,  C09J7/24 ,  C09J7/38 ,  B32B7/12

摘要： Provided is an adhesive member including: a base material having an uneven shape on at least one surface; and a surface layer covering at least a portion of the surface having the uneven shape on the base material.

公开(公告)号：US11884804B2

公开(公告)日：2024-01-30

申请号：US16481627

申请日：2018-02-02

申请人： Mitsui Chemicals, Inc.

发明人： Tomoya Matayoshi ,  Takayuki Watanabe ,  Michio Eriguchi ,  Satoshi Noma

IPC分类号： C08L23/20 ,  C08J9/12 ,  C08J9/08

CPC分类号： C08L23/20 ,  C08J9/08 ,  C08J9/122 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2207/10 ,  C08J2323/20 ,  C08L2203/14

摘要： A foam body constituted of a 4-methyl-1-pentene-based polymer, in which one or more temperatures showing a maximum value of loss tangent (tan δ) of dynamic viscoelasticity, which is obtained by dynamic viscoelasticity measurement conducted under the conditions of a temperature increase rate of 4° C./min, a frequency of 1.59 Hz, and a distortion of 0.1%, exist in at least a range of 10° C. or higher and 100° C. or lower, and the maximum value of the loss tangent is 0.5 or more and 3.5 or less. Another aspect relates to a polyolefin-based foam sheet constituted of a 4-methyl-1-pentene-based polymer, in which the difference in Shore A hardness of at least one surface at different times is defined. A further aspect relates to a complex including a foam body constituted of a 4-methyl-1-pentene-based polymer and a member which is bonded to the foam body and is different from the foam body.