Title:
発泡体、ポリオレフィン系発泡シートおよび複合体
Document Type and Number:
Japanese Patent JP6821711
Kind Code:
B2
Abstract:
A foam body according to a first invention of the present application is 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. A polyolefin-based foam sheet according to a second invention of the present application is constituted of a 4-methyl-1-pentene-based polymer, in which when a Shore A hardness of at least one surface of the polyolefin-based foam sheet immediately after measurement, which is measured at 23°C according to JIS K6253, is HS0, and a Shore A hardness 15 seconds after the measurement is HS1, ΔHS expressed by (HS0- HS1) is 30 or more and 60 or less. A complex according to a third invention of the present application includes 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.
Inventors:
Tomoya Matayoshi
Takayuki Watanabe
Masao Eriguchi
Noma Kenji
Takayuki Watanabe
Masao Eriguchi
Noma Kenji
Application Number:
JP2018566125A
Publication Date:
January 27, 2021
Filing Date:
February 02, 2018
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08J9/04; B32B5/18; B32B7/022; B32B27/32
Domestic Patent References:
| JP62256836A | ||||
| JP2000290417A | ||||
| JP2016132692A | ||||
| JP2007529615A | ||||
| JP2008533276A |
Attorney, Agent or Firm:
Shinji Hayami