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. 16, 2018
Filed:
Jul. 03, 2014
Applicant:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Inventors:
Akira Ito, Mie, JP;
Hiroyuki Teramoto, Mie, JP;
Assignee:
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/68 (2006.01); C08G 65/16 (2006.01); C08G 2/06 (2006.01); C08G 4/00 (2006.01);
U.S. Cl.
CPC ...
C08G 65/16 (2013.01); C08G 2/06 (2013.01); C08G 4/00 (2013.01);
Abstract
The present invention provides a method for producing a polydioxolane, which includes polymerizing a 1,3-dioxolane compound represented by the formula (1) in the presence of a cationic catalyst and a sterically hindered phenol in an amount of 10 to 1,500 ppm, based on the 1,3-dioxolane compound. In the formula (1), R1 to R6 are the same or difference and each independently represents a hydrogen atom, an alkyl group, an aryl group, a hydroxyalkyl group, an alkyloxy group, or an aryloxy group.