Optical element and optical polycarbonate resin composition for

Details Optical element and optical polycarbonate resin composition for Optical element and optical polycarbonate resin composition for

1983-03-11

1985-01-22

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having a halogen atom or oxygen single bonded...

528 25, 528 43, 528174, 528196, 528201, 528208, 528370, C08G 6362

Patent

active

044953453

ABSTRACT:
An optical element including an optical resin composition consisting essentially of a polycarbonate is disclosed. Said optical resin composition have a melt flow rate of more than or equal to 5.0 g/10 min. as measured based on ISO R-1133 Standard under the condition of 230.degree. C. and 5 kgf. and have a glass transition point of more than or equal to 100.degree. C. Said polycarbonate include a major repeating unit represented by the formula (I) or (II). ##STR1## wherein Ar.sub.1 and Ar.sub.2 each represent an arylene group or a cycloalkylene group; R represents an alkylene group, a cycloalkylene group, --O--, --O--Ar.sub.3 --O--, --S--, --SO--, --SO.sub.2 --, --SO.sub.2 --Ar.sub.3 --SO.sub.2 --, --R.sub.1 --Ar.sub.4 --R.sub.1 --, --O--R.sub.1 --O--, ##STR2## --CONH--R.sub.1 --NHCO--, or --Ar.sub.5 --R.sub.1 --; Ar.sub.3 and Ar.sub.4 each represent a phenylene group or a bisphenylene group; R.sub.1 represents an alkylene group; R.sub.2 represents an alkyl group; Ar.sub.5 represents a cycloalkylene group, --R.sub.1 --Ar.sub.4 --R.sub.1 --, --R.sub.1 --Ar.sub.5 --R.sub.1 --, --R.sub.1 --O--Ar.sub.4 --O--R.sub.1 --, or --R.sub.1 --O--Ar.sub.4 --X--Ar.sub.4 --O--R.sub.1 ; and X represents --SO.sub.2 --, --CO--, an alkylene group, or --R.sub.1 --Ar.sub.4 --R.sub.1 --.

REFERENCES:
patent: 3554742 (1971-01-01), Gramza et al.

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