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. 14, 2019
Filed:
Jan. 07, 2015
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Atsuhiro Nakahara, Tainai, JP;
Hiroshi Ozawa, Tainai, JP;
Takashi Fukumoto, Tainai, JP;
Nobutaka Hiraoka, Tainai, JP;
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 220/14 (2006.01); C08G 63/08 (2006.01); C08G 63/00 (2006.01); C08J 5/18 (2006.01); G02B 1/14 (2015.01); G02B 1/04 (2006.01); F21V 8/00 (2006.01); C09D 133/12 (2006.01); C08F 265/04 (2006.01); C08F 224/00 (2006.01); C08F 216/38 (2006.01);
U.S. Cl.
CPC ...
C08F 220/14 (2013.01); C08G 63/005 (2013.01); C08G 63/08 (2013.01); C08J 5/18 (2013.01); C09D 133/12 (2013.01); G02B 1/04 (2013.01); G02B 1/14 (2015.01); G02B 6/0065 (2013.01); C08F 216/38 (2013.01); C08F 224/00 (2013.01); C08F 265/04 (2013.01); C08J 2333/12 (2013.01);
Abstract
Provided are a break-resistant copolymer having high transparency and heat resistance and also having a high tensile strain at break, and a molded article. A copolymer contains 80% by mass to 98% by mass of structural units derived from a methacrylic ester monomer and 2% to 10% by mass of ester structural units derived from a cyclic ketene acetal monomer. The copolymer has a weight average molecular weight of 80,000 or more and a molecular weight distribution of 1.75 to 3.80.