Patent · US Active

Polymerizable composition for optical material, optical material, and method for preparing the optical material

US8434866B2 · kind B2 · utility

3Cited by

9References

13Claims

0Family size

Assignee

MITSUI CHEMICALS, INC. · JP

Inventors

Hidetoshi Hayashi · Yamato, JP
Masaru Kawaguchi · Oomuta, JP
Akinori Ryu · Oomuta, JP
Hironori Kuboi · Ogoori, JP
Mamoru Takashina · Tallahassee, US
Seiichi Kobayashi · Oomuta, JP
Touru Miura · Nishitokyo, JP

Key dates

Filing date	Aug 5, 2009
Grant date	May 7, 2013
Priority date	—
Expiry date	Jun 11, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31609
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The polymerizable composition for an optical material of the present invention comprises a phenylene diisocyanate, at least one polythiol compound selected from the group consisting of 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8-, 4,7- or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 2,5-bis(mercaptomethyl)-1,4-dithiane, bis(mercaptoethyl)sulfide, 1,1,3,3-tetrakis(mercaptomethylthio)propane, 4,6-bis(mercaptomethylthio)-1,3-dithiane, 2-(2,2-bis(mercaptomethylthio)ethyl)-1,3-dithietane, 1,1,2,2-tetrakis(mercaptomethylthio)ethane 3-mercaptomethyl-1,5-dimercapto-2,4-dithiapentane and tris(mercaptomethylthio)methane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.