AQUEOUS DISPERSION OF ETHYLENE/VINYL ACETATE COPOLYMER RESIN
PURPOSE:To provide the titled dispersion which lowers the lowest film-forming temp. and gives a coating film having excellent adhesion, cohesive force and flexibility, by dispersing an ethylene/vinyl acetate copolymer resin in an aq. medium by using a combination of a surfactant and protective collo...
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| creator | AIZAWA YUKIHIKO |
| description | PURPOSE:To provide the titled dispersion which lowers the lowest film-forming temp. and gives a coating film having excellent adhesion, cohesive force and flexibility, by dispersing an ethylene/vinyl acetate copolymer resin in an aq. medium by using a combination of a surfactant and protective colloid. CONSTITUTION:An ethylene/vinyl acetate copolymer resin (A) having a vinyl acetate content of 10-40wt% and an MI of 0.1-400, 2-30wt% soap (B) of wood rosin dimer composed of 90% resin acid obtd. from a root of an aged pine tree and 10% non-oxidizing material as a surfactant and a resin (C) as protective colloid obtd. by neutralizing 5-80wt% ethylene/(meth)acrylic acid copolymer composed of 98-10wt% ethylene and 2-90wt% (meth)acrylic acid, are dissolved in a solvent mixture of a water-immiscible solvent and a polar solvent and vigorously stirred in an aq. medium at a temp. which is lower by 10-20 deg.C than the azeotropic temp. of said solvent/water azeotrope for 5-30min. Said solvent mixture is then evaporated under vacuum to obtain the titled dispersion having a solid content of 40wt%. |
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CONSTITUTION:An ethylene/vinyl acetate copolymer resin (A) having a vinyl acetate content of 10-40wt% and an MI of 0.1-400, 2-30wt% soap (B) of wood rosin dimer composed of 90% resin acid obtd. from a root of an aged pine tree and 10% non-oxidizing material as a surfactant and a resin (C) as protective colloid obtd. by neutralizing 5-80wt% ethylene/(meth)acrylic acid copolymer composed of 98-10wt% ethylene and 2-90wt% (meth)acrylic acid, are dissolved in a solvent mixture of a water-immiscible solvent and a polar solvent and vigorously stirred in an aq. medium at a temp. which is lower by 10-20 deg.C than the azeotropic temp. of said solvent/water azeotrope for 5-30min. 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CONSTITUTION:An ethylene/vinyl acetate copolymer resin (A) having a vinyl acetate content of 10-40wt% and an MI of 0.1-400, 2-30wt% soap (B) of wood rosin dimer composed of 90% resin acid obtd. from a root of an aged pine tree and 10% non-oxidizing material as a surfactant and a resin (C) as protective colloid obtd. by neutralizing 5-80wt% ethylene/(meth)acrylic acid copolymer composed of 98-10wt% ethylene and 2-90wt% (meth)acrylic acid, are dissolved in a solvent mixture of a water-immiscible solvent and a polar solvent and vigorously stirred in an aq. medium at a temp. which is lower by 10-20 deg.C than the azeotropic temp. of said solvent/water azeotrope for 5-30min. Said solvent mixture is then evaporated under vacuum to obtain the titled dispersion having a solid content of 40wt%.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES |
| title | AQUEOUS DISPERSION OF ETHYLENE/VINYL ACETATE COPOLYMER RESIN |
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