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. 07, 2006
Filed:
Mar. 11, 2002
Chojiro Higuchi, Sodegaura, JP;
Atsuo Otsuji, Sodegaura, JP;
Kenichi Sugimoto, Sodegaura, JP;
Mitsuo Nakamura, Sodegaura, JP;
Masatoshi Takagi, Sodegaura, JP;
Yasuhiro Nukii, Omuta, JP;
Koju Okazaki, Sodegaura, JP;
Chojiro Higuchi, Sodegaura, JP;
Atsuo Otsuji, Sodegaura, JP;
Kenichi Sugimoto, Sodegaura, JP;
Mitsuo Nakamura, Sodegaura, JP;
Masatoshi Takagi, Sodegaura, JP;
Yasuhiro Nukii, Omuta, JP;
Koju Okazaki, Sodegaura, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A poly(thio)ester (co)polymer which comprises a repeating structural unit represented by the formula (1-A) as an essential structural unit:[wherein Ris a divalent aliphatic hydrocarbon group which may contain at least one sulfur atom in a sulfide group; Ris a mono- or poly-cyclic aliphatic or aromatic dicarboxylic acid residue; and Xand Xare each independently an oxygen atom or sulfur atom, and when Xand Xare the oxygen atoms, Ris a divalent aliphatic hydrocarbon group containing at least one sulfur atom in the sulfide group]; and an optical component obtainable by molding the poly(thio)ester (co)polymer. The poly(thio)ester (co)polymer is excellent in transparency and optical characteristics (e.g., a higher refractive index, higher Abbe number, and lower birefringence), and has also good mechanical characteristics and thermal characteristics, and further is excellent in melt fluidity and injection moldability.