TRANSPARENT RESIN HAVING HIGH REFRACTIVE INDEX

TRANSPARENT RESIN HAVING HIGH REFRACTIVE INDEX

PURPOSE:To obtain the titled transparent resin having high refractive index and good Abbe number and suitable for lens of correcting glasses, by copolymerizing a novel monomer and a crosslinking monomer having plural polymerizable functional groups. CONSTITUTION:The objective resin is produced by co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIURA MITSUO, MIKI TAKAO, WATANABE TOSHIO, SUGIO AKITOSHI, SHINTANI NOBUHIRO, AOKI OSAMU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:PURPOSE:To obtain the titled transparent resin having high refractive index and good Abbe number and suitable for lens of correcting glasses, by copolymerizing a novel monomer and a crosslinking monomer having plural polymerizable functional groups. CONSTITUTION:The objective resin is produced by copolymerizing a monomer of formula (R is H or methyl; m and n are integer of 0-5) and a crosslinkable monomer having plural polymerizable functional groups copolymerizable with the above monomer. The polymerization is carried out preferably by cast- polymerization. The crosslinkable monomer is preferably a compound giving a homopolymer having a refractive index of >=1.6, e.g. divinylbenzene. The amount of the monomer of formula is preferably >=5wt% in the above monomer mixture.