Title:
PHOTOCATALYTIC COMPOSITION
Document Type and Number:
WIPO Patent Application WO/1998/012232
Kind Code:
A1
Abstract:
A photocatalytic composition characterized by comprising at least one compound which is selected from the group consisting of polycyclic aromatic compounds and carbazole derivatives each having at least one substituent selected from among hydroxyl and optionally substituted aralkyloxy and alkoxy groups and which exhibits an absorption at a wavelength longer than 330 nm in the UV absorption spectrum, and at least one aryl onium salt selected from the group consisting of diphenyl-alkylsulfonium salts and dinaphthylalkylsulfonium salts, triphenylsulfonium salts, diphenyliodonium salts, phenylnaphthyliodonium salts and dinaphthyliodonium salts all of which act as a catalyst for cationic photopolymerization. The composition can cure cationically polymerizable compounds when mixed with the compounds and irradiated with an actinic radiation such as light, electron beam or X-ray. Further, the composition can attain the curing even when irradiated with a ray having a wavelength longer than 330 nm which is not absorbed by triphenylsulfonium salts or diphenyliodonium salts or is little absorbed by them, thus permitting remarkably accelerated curing of a clear composition or effective photocuring of a composition containing a pigment or the like. Thus, this composition is suitably applicable to photocurable coating materials, adhesives, inks and photoresists, photosensitive resins for stereolithography, and so on.
Inventors:
TAKAHASHI EIJI (JP)
Application Number:
PCT/JP1997/003293
Publication Date:
March 26, 1998
Filing Date:
September 18, 1997
Export Citation:
Assignee:
NIPPON SODA CO (JP)
TAKAHASHI EIJI (JP)
TAKAHASHI EIJI (JP)
International Classes:
C08F2/50; C08F4/00; C08G59/68; C08G65/10; C08G65/18; G03F7/004; G03F7/038; (IPC1-7): C08F4/00; C08F2/50; C08F16/18; C08G59/68
Foreign References:
| JPH09176112A | 1997-07-08 | |||
| JPH09118663A | 1997-05-06 |
Other References:
See also references of EP 0927726A4
Attorney, Agent or Firm:
Tokai, Yusaku (2-1 Ohtemachi 2-chom, Chiyoda-ku Tokyo 100, JP)
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