PROCESS FOR THE PRODUCTION OF PHOTOCHROMIC PRODUCT OF CURING

Title:

PROCESS FOR THE PRODUCTION OF PHOTOCHROMIC PRODUCT OF CURING

Document Type and Number:

WIPO Patent Application WO/1996/037575

Kind Code:

A1

Abstract:

A process for the production of a photochromic product of curing by mixing a mixture comprising a polyfunctional (meth)acrylate monomer (e.g., crude polyalkylene glycol dimethacrylate containing impurities) and a photochromic spiro-oxazine compound with a compound having at least one epoxy group in the molecule (e.g., glycidyl methacrylate) and polymerizing the mixture thus obtained. This process can give a photochromic product of curing which little suffers from initial discoloration and is excellent in initial chromophoric activity.

Inventors:

NAGOH HIRONOBU (JP)
ITONAGA KAZUMASA (JP)
IMURA SATOSHI (JP)

Application Number:

PCT/JP1996/001386

Publication Date:

November 28, 1996

Filing Date:

May 24, 1996

Export Citation:

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Assignee:

TOKUYAMA CORP (JP)
NAGOH HIRONOBU (JP)
ITONAGA KAZUMASA (JP)
IMURA SATOSHI (JP)

International Classes:

C08J5/00; C08F2/44; C08F22/10; C08F290/00; C08F299/02; C08G59/40; C08K5/35; C09D4/00; C09D4/02; C09D133/04; C09D133/06; C09K9/02; G03C1/73; G03C1/685; (IPC1-7): C09K9/02; C08K5/04; C08K5/35; C08L33/14; G02C7/02; G03C1/73

Foreign References:

JPH05306392A	1993-11-19
JPS62187784A	1987-08-17
JPH03261945A	1991-11-21
JPH04358117A	1992-12-11
JPH04208919A	1992-07-30

Other References: