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:
Apr. 25, 2017
Filed:
Mar. 19, 2012
Applicant:
Hiroyuki Takaki, Himeji, JP;
Inventor:
Hiroyuki Takaki, Himeji, JP;
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaki-Shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 55/02 (2006.01); C08C 19/28 (2006.01); C07D 207/448 (2006.01); C08F 236/12 (2006.01); C08F 222/40 (2006.01); C08F 279/02 (2006.01);
U.S. Cl.
CPC ...
C08C 19/28 (2013.01); C07D 207/448 (2013.01); C08F 222/40 (2013.01); C08F 236/12 (2013.01); C08F 279/02 (2013.01); C08L 55/02 (2013.01);
Abstract
The present invention provides an N-phenylmaleimide compound that can improve the quality of the obtained copolymer by using N-phenylmaleimide containing impurities in specific amounts or less as at least one component of the copolymerization monomers. The N-phenylmaleimide compound of the present invention contains 0.1% by weight or less of N-(2,5-dioxo-1-phenyl-3-pyrrolidinyl)-N-phenylmaleamic acid (PPMA) and/or 0.3% by weight or less of N-phenylfumaramic acid (PFA).