The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2024
Filed:
Feb. 02, 2018
Mitsui Chemicals, Inc., Tokyo, JP;
Tomoya Matayoshi, Ichihara, JP;
Takayuki Watanabe, Chiba, JP;
Michio Eriguchi, Chiba, JP;
Satoshi Noma, Ichihara, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
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.