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:
May. 24, 2022
Filed:
Jan. 29, 2019
Teijin Limited, Osaka, JP;
Yasuhiko Tomonari, Osaka, JP;
TEIJIN LIMITED, Osaka, JP;
Abstract
Provided are a novel compound having a fluorene skeleton, and a method for manufacturing the same, the compound having a low palladium content or other content of a specific metal or content of a specific compound in a raw material alcohol, and being excellent in hue or various characteristics (optical characteristics, heat resistance, moldability, and other characteristics) as a raw material or in a resin that uses the raw material. This compound is a mixture of compounds having a fluorene skeleton represented by formula (1) (in formula (1), the rings Z being (same or different) aromatic groups, Rand Reach independently representing a hydrogen atom, a halogen atom, or a C1-12 hydrocarbon group which may include an aromatic group, Arand Arrepresenting C6-10 aromatic groups which may have a substituent, Land Lrepresenting alkylene groups, j and k each independently representing an integer of 0 or greater, and m and n each independently representing an integer of 0 to 5), the mixture of compounds having a fluorene skeleton being characterized in that the content of elemental palladium therein satisfies formula (2) ((2): 0≤Pd≤50 ppm), and among the mixture of compounds represented by formula (1), compounds comprising the integers m=1-5 and n=0 are included in a range of 0-5%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile