Patent ID: 8148444

Claim:
A sheet formable monomer composition for forming a heat conductive sheet, comprising: (A) a photo polymerizable component consisting of a (meth)acrylate-functional monomer or a mixture of the (meth)acrylate-functional monomer and partially polymerized (meth)acrylate-functional monomer; (B) a heat conductive filler; (C) a photo reaction initiator for initiating the polymerization of said photo polymerizable component; and (D) a photo absorbent for absorbing and at least partially removing a wavelength band shorter than about 345 nm from ultraviolet rays used for the polymerization of said photo polymerizable component, wherein said photo absorbent (D) is contained in a proportion of about 1 to about 5 parts by mass on the basis of 100 parts by mass of said photo polymerizable component (A).