Abstract: This invention provides a halogen-containing thermoplastic resin composition comprising a halogen-containing thermoplastic resin (A), a melt-moldable vinyl alcohol polymer (B) and a polyesteramide (C), the proportions of (B) and (C) being 0.1 to 100 parts by weight and 0.1 to 10 parts by weight, respectively, based on 100 parts by weight of (A). The component (C) improves the compatibility between the components (A) and (B).

Abstract: This invention provides a halogen-containing thermoplastic resin composition comprising a halogen-containing thermoplastic resin (A) consisting of 100 to 0.1 weight percent of a thermoplastic polyurethane-vinyl chloride graft polymer (a1) with a polyurethane content of 10 to 90 weight percent which is produced by polymerizing vinyl chloride in the presence of a thermoplastic polyurethane and 0 to 99.9 weight percent of another halogen-containing polymer (a2) and a melt-moldable vinyl alcohol polymer (B), the proportion of melt-moldable vinyl alcohol polymer (B) being in the range of 0.1 to 100 parts by weight to 100 parts by weight of halogen-containing thermoplastic resin (A).

Abstract: Ethylene vinyl alcohol copolymer is blended with polyetheramide block copolymer to form a novel composition of matter. The blended composition can be extruded and/or coextruded to make packaging films. In the most preferred embodiments, the blend is contained as one layer in a film comprising a multiplicity of layers, and at least the blend layer is molecularly oriented. Methods of making the films are also disclosed.

Abstract: A process for forming a film of a hydrolyzed ethylene-vinyl acetate copolymer which comprises:coating a solution comprising a hydrolyzed ethylene-vinylacetate copolymer to a substrate,drying the wet film andsubjecting the dried film to heat-treatment,said obtained film being formed so as to have a ratio of absorbance at 1140 cm.sup.-1 to absorbance at 1090 cm.sup.-1 in infrared absorption spectrum of not less than 0.65. According to the process of the present invention, the hydrolyzed ethylene-vinyl acetate copolymer film having excellent oxygen impermeability can be obtained.

Abstract: In a process for preparing a molded article by melt-molding a mixture of (A) a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 20 to 80% by mole and a degree of hydrolysis in the vinyl acetate units of at least 90% by mole and (B) an olefin resin, the improvement which comprises melt-molding said mixture in the presence of a hydrotalcite solid solution (C) having the formula (I):{(M.sub.1.sup.2+).sub.yl (M.sub.2.sup.2+).sub.y2 }.sub.1-x (M.sup.3+).sub.x (OH).sub.2 (A.sup.n-).sub.x/n.mH.sub.2 O (I)According to the process of the present invention, long run processability during melt-molding can be remarkably improved, and the obtained molded article has excellent qualities, e.g., the film has few fish eyes.

Abstract: A laminate comprising a layer of a composition (A) of 100 parts by weight of a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 20 to 55% by mole and a degree of hydrolysis of at least 90% by mole and 1 to 100 parts by weight of a thermoplastic polyester having a glass transition temperature of -50.degree. to 25.degree. C. and a heat of fusion of not more than 30 joules/g, the acid component of the polyester being a mixture of 20 to 70% by mole of an aromatic dicarboxylic acid and 80 to 30% by mole of an aliphatic dicarboxylic acid, and the glycol component of the polyester being an alkylene glycol having 2 to 6 carbon atoms; and a layer of a composition (B) of at least one polymer selected from the group consisting of a polyolefin, a polystyrene, a polyvinyl chloride, a polyamide, a polycarbonate and a polyester having a glass transition temperature of not less than 30.degree. C.

Abstract: A thermoplastic resin composition comprising(1) a thermoplastic resin having an ester structure in the main chain and(2) a hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60% by mole and a degree of hydrolysis in the vinyl acetate component of at least 95% by mole, and having an ash content of not more than 20 ppm and an alkali metal content of not more than 5 ppm. The composition of the present invention can give molded articles having excellent properties, and is suitable for use as wrapping or packaging materials and engineering plastics.

Abstract: In coating a polyester substrate structure with a solution of a vinyl alcohol resin having a high gas barrier property, the surface of the polyester substrate structure is precoated with a solvent solution of a polyester having the following formulation and an intrinsic viscosity of at least 0.4 and dried to provide an anchor coating layer on said surface.______________________________________ Acid component: Terephthalic acid and/or 90 to 40 mol % isophthalic acid An aliphatic dicarboxylic 10 to 60 mol % acid containing 2 to 12 carbon atoms Diol component: A straight-chain or cyclic 90 to 10 mol % diol containing 2 to 8 carbon atoms A branched diol containing 10 to 90 mol % 3 to 6 carbon atoms ______________________________________The above procedure provides a polyester structure with excellent gas barrier property.

Abstract: A process for producing a molded article comprising a mixture of an olefin resin, which includes a residual chlorine due to a Ziegler type catalyst, a hydrolyzed ethylene-vinyl acetate copolymer and the hydrotalcite compounds having the formula:M.sub.x Al.sub.y (OH).sub.2x+3y-2z (E).sub.z.aH.sub.2 O(wherein "M" is Mg, Ca or Zn, "E" is CO.sub.3 or HPO.sub.4, "x", "y" and "z" are positive numbers and "a" is 0 or a positive number). The hydrotalcite is previously melt-mixed into the olefin resin in a proportion of 1/2z moles per mole of the residual chlorine in the olefin resin to 0.5% by weight based on the olefin resin to give an olefin resin composition, and the mixture of the olefin resin composition is melt-molded with the hydrolyzed ethylene-vinyl acetate copolymer. According to the process, the gel formation can be remarkably reduced, the long run processability can be remarkably increased, and the molded articles having excellent qualities can be obtained.

Abstract: A process for forming a film of hydrolyzed ethylene-vinyl acetate copolymer employing a mixed solvent of water, at least one member selected from the group consisting of propyl alcohol, butyl alcohol and benzyl alcohol, and at least one member selected from the group consisting of formic acid, an alkyl formate, acetic actid, an alkyl acetate, dimethylsulfoxide and N-methylpyrrolidone as a solvent for the copolymer.A process includes an applying operation which can be carried out at normal temperature employing a solution in a low concentration of the copolymer.Also, a process need not any additional operation or special devices to form an even and homogeneous film of the hydrolyzed ethylene-vinyl acetate copolymer having excellent properties such as transparency and gas impermeability suitable for wrapping or packaging material.

Abstract: A melt-blended composition containing at least two kinds of hydrolyzed ethylene-vinyl acetate copolymers having a different ethylene content from each other within the range of 20 to 55% by mole, a degree of hydrolysis in vinyl acetate component of at least 80% by mole and a specific melt tension as defined herein, the hydrolyzed copolymers included in the largest amount and the second largest amount among the hydrolyzed copolymers constituting the composition having a specific relationship with each other in weight ratio and ethylene content and the fusion curve of the composition indicating substantially single peak. The composition has an improved melt-moldability, and provides molded articles having remarkably reduced fish eyes and uniform thickness or excellent dimensional stability.

Abstract: In a typical tubular extrusion of hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 15 to 50% by mole and a degree of hydrolysis in the vinyl acetate units of not less than 90% by mole, an improved process for preparing the tubular film without wrinkle by controlling the surface temperature of the tubular film at the nip rolls within the range of 50.degree. to 100.degree. C.