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:
Apr. 21, 2020
Filed:
Oct. 27, 2015
Kuraray Co., Ltd., Kurashiki-shi, JP;
Kiyofumi Kadowaki, Kurashiki, JP;
Shinya Kato, Kurashiki, JP;
Chihiro Okamoto, Kurashiki, JP;
Mitsuru Kato, Kurashiki, JP;
Minori Takegoshi, Kurashiki, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
Abstract
Disclosed is a non-porous molded article for a polishing layer, the non-porous molded article including a thermoplastic polyurethane, wherein the thermoplastic polyurethane has a maximum value of a loss tangent (tan δ) in a range of −70 to −50° C. of 4.00×10or less. Preferably, the thermoplastic polyurethane is obtained by polymerization of a polymer diol having a number average molecular weight of 650 to 1400, an organic diisocyanate, and a chain extender, and a content ratio of nitrogen derived from an isocyanate group of the organic diisocyanate is 5.7 to 6.5 mass %.