Adhesive compositions and composite films for flexible packaging materials

Patent Name Adhesive Composition and Composite Film for Flexible Packaging Materials Patent Applicant Mitsui Takeda Chemical Co., Ltd. Principal Applicant Address Inventor of Tokyo Metropolitan Keino Nobuyoshi; 50 Yoshio Fu Application (patent) No. 03817961.X Date of Application 2003.07. 22 Certification Date Approval Notice No. 1671815 Auditing Notice Day 2005.09.21 Instruction CD-ROM D0538 Main Classification No. C09J175/12 Classification No. C09J175/12; B32B27/40; B65D65/40 Sub-prioritization Application No. 2002.7.26 JP 217438 /2002 Abstract In order to provide a method for reducing the elution of a low-molecular-weight compound into a content of a composite film, it is possible to prevent a significant decrease in strength even if the contents are oily, without impairing the original performance of the contents and improving the oil resistance. In addition, the adhesive composition exhibiting excellent flexibility to prevent the decrease in peel strength and the composite film for flexible packaging material are prepared, and the polyol component is prepared to contain a polyester polyamide polyol containing an amide bond obtained by the reaction of a dimer acid and a polyamine. And/or Polyurethane Polyamide Polyamide polyols, and adhered from the adhesive composition The concentration of the cyclic compound composed of amide bonds and/or ester bonds in the extract extracted with water having a unit area of ​​0.5 mL/cmsup2/sup per unit area of ​​the composite film to use a gas chromatograph-hydrogen The dibutyl phthalate conversion value measured by the flame ionization detector was 0.5 ppb or less. SATIVALY CLAIMS 1. An adhesive composition comprising a polyisocyanate component and a polyol component, the polyol component comprising a polyester polyamide polyol containing an amide bond obtained by reacting a dimer acid and a polyamine and The urethane polyester polyamide polyol, the amide bond in the extract extracted from the composite film adhered by the adhesive composition in the water of 0.5 mL/cm2 per unit area of ​​the composite film, and/or the amide bond. The concentration of the cyclic compound constituted by the ester bond was 0.5 ppb or less in terms of a dibutyl phthalate-converted value measured by a gas chromatograph-hydrogen flame ionization detector. International Application PCT/JP2003/009243 2003.7.22 International Publication WO2004/011570 Date 2004.2.5 Date of Entry into the Country Patent Agency Beijing Yinlong Intellectual Property Agency Co., Ltd. Agency Address Jing Jing