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. 24, 2023
Filed:
Feb. 03, 2020
Tokyo Ohka Kogyo Co., Ltd., Kawasaki, JP;
Tokyo Institute of Technology, Tokyo, JP;
Teruaki Hayakawa, Tokyo, JP;
Seina Yamazaki, Tokyo, JP;
Akiyoshi Yamazaki, Kawasaki, JP;
Daisuke Kawana, Kawasaki, JP;
Yoshitaka Komuro, Kawasaki, JP;
Takaya Maehashi, Kawasaki, JP;
Rin Odashima, Kawasaki, JP;
TOKYO OHKA KOGYO CO., LTD., Kawasaki, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
Abstract
A block copolymer including a first block consisting of a polymer having a repeating structure of a structural unit (u1) containing no silicon atom, and a second block consisting of a polymer having a repeating structure of a structural unit (u2) containing a silicon atom, the second block containing a block (b21) consisting of a polymer having a repeating structure of a structural unit (u21) represented by general formula (u2-1) shown below, and the volume ratio of the first block, based on all blocks constituting the block copolymer being 42 to 44 vol %: In which Rrepresents an alkyl group, a halogenated alkyl group, a hydrogen atom, or an organic group having a polar group; and Ris a group derived from a compound represented by formula SHR, wherein Rrepresents a hydrocarbon group having 1 to 5 carbon atoms optionally having a substituent.