Nippon Paint Compnay, Ltd.

Napp Systems (usa), Inc.

Masami Kawabata

Iwao Sumiyoshi

Yasuyuki Takimoto

Akihiko Sato

Masahiko Harada

Mamoru Seio

Hidefumi Kusuda

Hiroshi Tsushima

Koichi Kimoto

Emi Watanabe

Kenzo Mizutani

A photosensitive composition for volume hologram recording used for recording an interference fringe produced by the interference of laser beams or lights having excellent coherence as a fringe having a different refractive index, the composition comprising:

Photosensitive composition for volume hologram recording

The present invention provides a photosensitive composition for volume hologram recording, comprising the following components:

Disclosed is a photosensitive composition for volume hologram recording which is used for recording an interference fringe produced by a laser beam or a light having excellent coherence, as fringes having different refractive index. The composition comprising:

The present invention provides the near infrared polymerizable composition which has high sensitivity sufficient to provide excellent curability to the coating composition containing the same, even if the coating composition contains the pigment as well. The present invention provides a near infrared polymerizable composition comprising a cyanine dye, a S-triazine compound, an organoboron salt and an ethylenically unsaturated compound.

Near infrared polymerizable composition

Photopolymerizable composition

Disclosed is a polymer having a group represented by the following formula (I) or (II) in a side chain on a main chain consisting of carbon-carbon bonds: ##STR1## [wherein X is an oxygen atom, a sulfur atom or N--R.sup.1, R.sup.1 is a hydrogen atom, an alkyl group containing 1 to 3 carbon atoms or CH.sub.2 CO.sub.2 H], said group being decarboxylated by photo-reaction of its own or by photo-reaction with a photo-sensitizer which absorbs light to generate a free radical.

Photosensitive composition

The present invention provides a new process for recording an image by using the above mentioned phenomenon. The process comprises (i) inserting an anisotropic molecular oriented film between two polarizing film of which polarization directions are parallel or perpendicular to each other, so that the anisotropy of said anisotropic molecular oriented film forms an angle of 45.degree. to the polarization directions of said polarizing film, and (ii) completely or incompletely degrading the anisotropy of an image portion in said anisotropic molecular oriented film.

Process for recording an image, a film structure therefor and its

Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (A) a particular xanthene, coumarin or merocianine dyestuff, (B) a diaryliodonium salt and (C) a compound having the formula; R(n)--D--CH.sub.2 --E

There is hereby provided a photosensitive resin composition suitable for a relief printing plate having an excellent resistance to a water based ink, whereby water or a water like solvent can be employed as a developing solution, which comprises;

Photosensitive resin composition

Disclosed is a photopolymerizable composition which is very sensitive to light, especially visible light having a wave length of 600 to 700 nm. The photopolymerizable composition comprising a polymerizable compound having an ethylenically unsaturated double bond and a photopolymerization initiator wherein the photopolymerization initiator comprises (a) a specific sensitizer and (b) a radical forming agent.

Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (A) a particular xanthene, coumarin or merocianine dyestuff, (B) a diaryliodonium salt and (C) a compound having the formula;

Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (a) a particular xanthene or thioxanthene dyestuff, (b) a photosensitizer selected from the group consisting of N-phenylglycine, 2,4,6-tris(trichloromethyl)-1,3,5-triazine, and a mixture of p-dimethylaminobenzoic acid isopentyl ester and 2,4-diisopropylthioxanthone, and (c) a peroxide.

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Takatsuki, Japan

Masami Kawabata