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:
Mar. 17, 2020
Filed:
Feb. 04, 2016
Zeon Corporation, Tokyo, JP;
Shigetaka Hayano, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
The present invention provides a hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer having a melting point of lower than 280° C., an initial melting temperature of 260° C. or higher and a syndiotacticity of higher than 90%, and a syndiotactic dicyclopentadiene ring-opening polymer, and a method for producing the syndiotactic dicyclopentadiene ring-opening polymer, and a method for producing the hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer. The hydrogenated syndiotactic crystalline dicyclopentadiene ring-opening polymer has a sufficiently high initial melting temperature, excellent heat resistance and advantageous industrial producibility. The syndiotactic dicyclopentadiene ring-opening polymer is excellent in solution stability after polymerization reaction and can be converted into the hydrogenated product by hydrogenation reaction.