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Title:
PHOTOSENSITIVE DRY FILM RESIST, PRINTED WIRING BOARD MAKING USE OF THE SAME, AND PROCESS FOR PRODUCING PRINTED WIRING BOARD
Document Type and Number:
WIPO Patent Application WO/2007/086385
Kind Code:
A1
Abstract:
A photosensitive dry film resist that allows use of aqueous development, excelling in resolution, flame retardance, close adherence, moisture resistance, electrical reliability and storage stability; a process for producing the same; and methods of use thereof. There is provided a photosensitive dry film resist of multilayer structure comprising at least a first photosensitive layer and a second photosensitive layer, wherein the first photosensitive layer contains as essential components (A1) binder polymer, (B1) (meth)acrylic compound, (C1) photoreaction initiator and (D1) flame retardant, and wherein the second photosensitive layer contains as essential components (A2) binder polymer and (B2) (meth)acrylic compound but substantially does not contain (D2) flame retardant, the flame retardant (D2) satisfying such requirements that when the ratio of the weight of flame retardant (D1) to the total weight of the first photosensitive layer is referred to as the flame retardant content of the first photosensitive layer and when the ratio of the weight of flame retardant (D2) to the total weight of the second photosensitive layer is referred to as the flame retardant content of the second photosensitive layer, the flame retardant content of the second photosensitive layer is in the range of 0 to 10 wt.% and, providing that the flame retardant content of the first photosensitive layer is 100, the flame retardant content of the second photosensitive layer is in the range of 0 to 50.

Inventors:
YAMANAKA TOSHIO
OKADA KOJI
KOJIMA KOHEI
NOJIRI HITOSHI
Application Number:
PCT/JP2007/051011
Publication Date:
August 02, 2007
Filing Date:
January 23, 2007
Export Citation:
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Assignee:
KANEKA CORP (JP)
YAMANAKA TOSHIO
OKADA KOJI
KOJIMA KOHEI
NOJIRI HITOSHI
International Classes:
G03F7/095; G03F7/004; G03F7/037; G03F7/075; H05K3/28
Foreign References:
JPH10115919A1998-05-06
JP2004361529A2004-12-24
JP2004145013A2004-05-20
JPH0715119A1995-01-17
JPH08152711A1996-06-11
JP2005321716A2005-11-17
JPS6327828A1988-02-05
JP2004361882A2004-12-24
JP2004341059A2004-12-02
JP2004326024A2004-11-18
JP2004157188A2004-06-03
JP2004151191A2004-05-27
JP2003330190A2003-11-19
JP2003177515A2003-06-27
JP2003131371A2003-05-09
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (2-6, Tenjinbashi 2-chome Kita,, Kita-k, Osaka-shi Osaka41, JP)
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