PROCESS FOR PRODUCING A MOLDED OBJECT AND AN OPTICAL INJECTION-MOLDED OBJECT

A molded article production method and an optical injection-molded article are provided to produce a molded article of high heat resistance using polymer having high moldability. A molded article production method injection-molds COC(Cyclic Olefin Copolymer). The COC has a first repeat unit of 20~50...

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Bibliographic Details
Main Authors KAIZU MICHITAKA, KAJIWARA ICHIROU, OKANIWA MOTOKI, KATSUDA KOUHEI
Format Patent
LanguageEnglish
Published 05.08.2009
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:A molded article production method and an optical injection-molded article are provided to produce a molded article of high heat resistance using polymer having high moldability. A molded article production method injection-molds COC(Cyclic Olefin Copolymer). The COC has a first repeat unit of 20~50wt.%, a second repeat unit of 50~80wt.%, and a third repeat unit of 0.1~10wt.%, where the first through third repeat units are expressed as formula 1, formula 2, and formula 3, respectively. Mw, polystyrene conversion mean weight by gel-permeation chromatography of COC, is 35,000~55,000.
Bibliography:Application Number: KR20090007255