Adhesive for copper foils and adhesive-backed copper foil
AssigneeMitsui Mining & Smelting Co., Ltd.
InventorTetsuro Satoh
Life of this patent
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Abstract
An adhesive composition and foils coated with the adhesive, wherein the adhesive consisting essentially of: (I) a fist amount of a non-modified epoxy resin and a second amount of a rubber-modified epoxy resin in a total amount of 60-100 parts by weight, wherein the amount of rubber-modified epoxy resin is 0.5 to 20 parts by weight; (II) 5-30 parts by weight of a polyvinyl acetal resin; and optionally contains (III) at least one resin selected rom the group consisting of blocked isocyanate resins, polyester resins, polyester resins, melamine resins and urethane resins. The adhesive coating can optionally contain inorganic fillers, fire retardants, and curing agents.
Claims14
An adhesive for copper foils, said adhesive consisting essentially of:
- (I) a first amount of a non-modified epoxy resin and a second amount of a rubber-modified epoxy resin in a total amount of 60-100 parts by weight, wherein said second amount of said rubber-modified epoxy resin is 0.5 to 20 parts by weight;
- (II) 5-30 parts by weight of a polyvinyl acetal resin;
- and optionally,
- (III) at least one resin selected rom the group consisting of blocked isocyanate resins, polyester resins, polyester resins, melamine resins and urethane resins.
An adhesive-backed copper foil, wherein the adhesive backing consisting essentially of:
- (I) a first amount of a non-modified epoxy resin and a second amount of a rubber-modified epoxy resin in a total amount of 60-100 parts by weight, wherein said second amount of said rubber-modified epoxy resin is 0.5 to 20 parts by weight;
- (II) 5-30 parts by weight of a polyvinyl acetal resin;
- and optionally,
- (III) at least one resin selected from the group consisting of blocked isocyanate resins, polyester resins, polyester resins, melamine resins and urethane resins.
Dependencies are inferred from the claim text.