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    • 7. 发明专利
    • PRODUCTION OF FIRE-RETARDANT COPPER CLAD LAMINATED SHEET
    • JPH06344504A
    • 1994-12-20
    • JP16326093
    • 1993-06-08
    • HITACHI CHEMICAL CO LTD
    • NANAUMI KENNOMOTO MASAHIROKUMAKURA YOSHITOSHIHORIUCHI TAKESHIIKEDA KENICHINARABE YOSHIYUKI
    • B32B15/08H05K1/03
    • PURPOSE:To produce an inexpensive fire-retardant copper clad laminated sheet excellent in low temp. punching processability, solvent resistance and heat resistance by adding a reaction product obtained by reacting a bromine- containing epoxy compd. with a compd. having an amino group and a hydroxyl group represented by a specific formula as a fire retardant. CONSTITUTION:A paper base material is impregnated with varnish prepared by adding a fire retardant to a modified phenol resin modified with drying or semidrying oil based on linoleic acid or linolenic acid and the impregnated base material is dried to form a prepreg. A specified number of the prepregs are superposed one upon another and a copper foil is superposed on the single surface or both surfaces of the formed prepreg composite and the whole is molded under heating and pressure to produce a copper clad laminated sheet. As the fire retardant, a reaction product obtained by reacting a bromine- containing epoxy compd. with a compd. having an amino group and a hydroxyl group represented by the formula I or II (wherein n is an integer of 1-10) is added. The obtained reaction product is reacted with the phenol resin and vegetable oil being a plasticizer to enhance characteristics and favorably influence on the pot life of the prepreg and the varnish.