Optical component and sulfur-containing poly(thio)ester...

Details Optical component and sulfur-containing poly(thio)ester... Optical component and sulfur-containing poly(thio)ester...

2006-03-07

2006-03-07

Gulakowski, Randy (Department: 1712)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

C528S377000, C528S390000, C528S391000, C528S364000, C528S365000, C427S162000

Reexamination Certificate

active

07008571

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 R11is a divalent aliphatic hydrocarbon group which may contain at least one sulfur atom in a sulfide group; R12is a mono- or poly-cyclic aliphatic or aromatic dicarboxylic acid residue; and X11and X12are each independently an oxygen atom or sulfur atom, and when X11and X12are the oxygen atoms, R11is 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.

REFERENCES:
patent: 03-043415 (1991-02-01), None
patent: 09-302094 (1997-11-01), None
Machine Translation, JP 09-312094, Endo et al., Nov. 25, 1997.

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