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. 08, 2008
Filed:
Mar. 11, 2003
Hiroyuki Morijiri, Omuta, JP;
Seiichi Kobayashi, Omuta, JP;
Chitoshi Shimakawa, Omuta, JP;
Akinori Ryu, Omuta, JP;
Nobuo Kawato, Omuta, JP;
Hiroyuki Morijiri, Omuta, JP;
Seiichi Kobayashi, Omuta, JP;
Chitoshi Shimakawa, Omuta, JP;
Akinori Ryu, Omuta, JP;
Nobuo Kawato, Omuta, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A polymerizable composition and a manufacturing method thereof are provided, in which the composition is capable of meeting requirements of overcoming decrease in production yield of a resin composed of a thioepoxy compound, the decrease being caused by variations in refractive index, hue, and optical strain. In a polymerizable composition containing a compound having at least one structure represented by the above formula (where Rrepresents a hydrocarbon having 1 to 10 carbon atoms, R, R, and Reach represent a hydrocarbon group having 1 to 10 carbon atoms or a hydrogen atom.), the total of a thioepoxy compound A, which has at least one structure represented by formula (2) and at least one structure represented by formula (3), and a thioepoxy compound B, which has at least one structure represented by formula (4) and at least one structure represented by formula (3), is 4 mass percent or less with respect to the total mass of the polymerizable composition.