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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.:

US 12540215 B1

PDFFull Text
Date of Patent:
Feb. 03, 2026

Filed:

Jan. 28, 2022

Method of manufacturing crystalline and amorphous forms of 6,6'-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl and thermoplastic resin therefrom

Applicant:

Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;

Inventors:

Shinya Ikeda, Niigata, JP;

Noriyuki Kato, Tokyo, JP;

Manabu Hirakawa, Hiratsuka, JP;

Karl Reuter, Freiburg, DE;

Vasyl Andrushko, Freiburg, DE;

Mark Kantor, Freiburg, DE;

Florian Stolz, Freiburg, DE;

Assignee:

MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;

Attorney:

GREENBLUM & BERNSTEIN, P.L.C.

Primary Examiner:

Amy C Bonaparte

Assistant Examiner:

Derek undefined Rhoades

Int. Cl.
CPC ...
C08G 63/672 (2006.01); C07C 43/20 (2006.01); C08G 63/66 (2006.01); C08G 63/78 (2006.01); G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
C08G 63/672 (2013.01); C07C 43/202 (2013.01); C08G 63/66 (2013.01); C08G 63/78 (2013.01); G02B 1/041 (2013.01); C07B 2200/13 (2013.01);
Abstract

Methods for forming a crystalline form or an amorphous form of 6,6'-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl and thermoplastic resin therefrom. According to one embodiment, a crystal solvate form of 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl, which contains in its crystals from 0.3 to 1.2 mol of an organic solvent per 1 mol of 6,6′-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl, where the organic solvent is selected from the group consisting of methanol, toluene, and methyl ethyl ketone.

Find Patent Forward Citations

Ikeda, Shinya. (2026). Method of manufacturing crystalline and amorphous forms of 6,6'-diphenyl-2,2′-bis(2-hydroxyethoxy)-1,1′-binaphthyl and thermoplastic resin therefrom (U.S. Patent No. 12540215). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12540215

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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