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US 7,030,170 B2Granted
Photosensitive resin composition, dry film, and workpiece using the same
AssigneeMitsui Chemicals, Inc.
InventorsSyuji Tahara, Etsuo Ohkawado, Moritsugu Morita, Kazuhito Fujita, Takeshi Tsuda
Life of this patent
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Abstract
A photosensitive resin composition which contains (A) polyamic acid, (B) (meth)acrylate having at least two photopolymerizable C═C unsaturated double bonds, (C) a photopolymerization initiator and (D) a flame retardant, with the (meth)acrylate (B) having at least two photopolymerizable C═C unsaturated double bonds being contained in an amount of 10 to 700 parts by weight based on 100 parts by weight of the polyamic acid (A).
Claims7
A photosensitive resin composition comprising:
- (A) a polyamic acid,
- (B) a (meth)acrylate having at least two photopolymerizable C═C unsaturated double bonds,
- (C) a photopolymerization initiator, and
- (D) a flame retardant,
- wherein the (meth)acrylate (B) having at least two photopolymerizable C═C unsaturated double bonds is contained in an amount of 10 to 700 parts by weight based on 100 parts by weight of the polyamic acid (A), and wherein the flame retardant (D) is an addition product of an organic phosphorus compound represented by the following formula (4), (5) or (6):
- with at least one compound selected from a compound having 1 to 4 epoxy groups, a compound having 1 to 4 (meth)acrylic groups or a compound having 1 to 4 vinyl groups.
3 more elements
A dry film obtained from a photosensitive resin composition comprising:
- (A) a polyamic acid, (B) a (meth)acrylate having at least two photopolymerizable C═C unsaturated double bonds, (C) aphotopolymerization initiator, and (D) a flame retardant, wherein the (meth)acrylate (B) having at least two photopolymerizabel C═C unsaturated double bonds is contained in an amount of 10 to 700 parts by weight based on 100 parts by weight of the polyamic acid (A),
- wherein the flame retardant (D) is an addition product of an organic phosphorus compound represented by the following formula (4), (5) or (6):
- with at least one compound selected from a compound having 1 to 4 epoxy groups, a compound having 1 to 4 (meth)acrylic groups and a compound having 1 to 4 vinyl groups, and
- the dry film has a phosphorus content of 0.5 to 6.0 % by weight based on the weight of the dry film.
1 more element
Dependencies are inferred from the claim text.