Title:
【発明の名称】光学樹脂組成物
Document Type and Number:
Japanese Patent JP2002509273
Kind Code:
A
Abstract:
Describes a polymerizable organic composition comprising an aromatic monomer having at least two vinyl groups, e.g., divinyl benzene, a polythiol monomer having at least two thiol groups, e.g., pentaerythritol tetrakis(2-mercaptoacetate), and an anhydride monomer having at least one ethylenically unsaturated group, e.g., methacrylic anhydride. Polymerizable compositions according to the present invention, may optionally further comprise a polymerizable comonomer having at least two (meth)acryloyl groups, e.g., pentaerythritol tetrakis (acrylate). Polymerizates prepared from polymerizable organic compositions of the present invention have a refractive index of at least 1.57 and an Abbe number of at least 33. Also described are photochromic articles prepared from such compositions.
Inventors:
Robert A. Smith
Robert di Herold
Michael O Ochorofour
Robert di Herold
Michael O Ochorofour
Application Number:
JP2000540165A
Publication Date:
March 26, 2002
Filing Date:
January 12, 1999
Export Citation:
Assignee:
PPG Industries Ohio,Inc.
International Classes:
C08G75/04; G02B1/04; (IPC1-7): G02B1/04; C08G75/04
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)