摘要:
A barrier composite film comprises a base film, an anchor coat layer, an inorganic layer such as a silicon oxide layer, and a coating layer containing a silane coupling agent and a barrier resin (e.g. a vinylidene chloride-series copolymer, an ethylene-vinyl alcohol copolymer), the layers being formed on at least one side of the base film in the order of reference. The anchor coat layer can be made of (A) a chlorine-containing resin such as a vinyl chloride-vinyl acetate copolymer, (B) a polyisocyanate compound, and (C) a saturated polyester resin having a glass transition temperature of -10.degree. C. to 20.degree. C. and being substantially unreactive to the component (B). A heat-sealing layer may be formed on the surface of the coating layer or the other side of the base film. This composite film provided with the inorganic layer can avoid a loss of its adhesive properties and barrier properties even under severe conditions such as retort treatment.
摘要:
At least one side of a base film is successively covered with an anchor coat layer comprising (A) a chlorine-containing resin e.g. a vinyl chloride-vinyl acetate copolymer, (B) a polyisocyanate compound and (C) a saturated polyester resin having glass transition temperature of -10.degree. C. to 20.degree. C. and being substantially unreactive to the polyisocyanate compound, and an inorganic layer such as a silicon oxide. The component (C) includes a noncrystalline saturated polyesters each having a hydroxyl value of 0 to 15 mg KOH/g or acid value of 0 to 10 mg KOH/g. The anchor coat layer may comprise about 10 to 500 parts by weight of the component (B) and 1 to 50 parts by weight of the component (C) relative to 100 parts by weight of the component (A). Such composite film inhibits deterioration of the adhesive properties and barrier properties even when exposed to severe conditions such as retort treatment.
摘要:
A lactone-modified epoxy (meth)acrylate resin is disclosed as is a hardenable resin composition which includes the lactone-modified epoxy resin. The lactone-modified epoxy (meth)acrylate resin is obtained by addition polymerizing 3 to 95 parts by weight of a lactone to 97 to 5 parts by weight of an epoxy (meth)acrylate resin at the whole or a part of the secondary hydroxy groups thereof. The hardenable resin composition comprises (A) 5 to 95 parts by weight of the above referred to lactone-modified epoxy (meth)acrylate resin, (B) 95 to 5 parts by weight of a vinyl compound having an ethylenically unsaturated bond, and (C) 0 to 10 parts by weight of a photosensitizer.