A biaxially drawn colored polyester film includes at least two layers: a surface layer (layer A) mainly composed of polyester having a melting point TmA of 230 to 260° C. and modified polyolefin wax, layer A having a polymer component with intrinsic viscosity of 0.46 or more, the modified polyolefin wax with an amount of 0.2 wt % or more based on the weight of the composition, coloring pigment with an amount of 10 wt % or less, and a water contact angle of less than 70° on an outer surface; and a substrate layer (layer B) mainly composed of polyester having a melting point TmB of 230 to 260° C. and coloring pigment, layer B having a polymer component with intrinsic viscosity of 0.46 or more and the coloring pigment with an amount of more than 10 wt % and 50 wt % or less; wherein |TmB−TmA| is 4° C. or less.

A degradable EVOH high-barrier composite film, characterized in that the materials of various layers in the composite film all obtain approximately-consistent biodegradability by introducing biomass, and the additive amount of the additive master batch in the materials of each layer is controlled within the range of 0.3-15% of the total mass of the materials of the corresponding layer; the hydrophilic activity of the hydrophilic groups in the additive master batch should be greater than or equal to that of the hydrophilic groups in the materials of each layer; by adding the additive master batch, the mole ratios of the hydrophilic groups to carbon atoms of the materials of various layers tend to be consistent, namely, the bioactivities tend to be consistent, so that the degradation rates of the materials of various layers in the composite film tend to be consistent. The present invention makes contribution to obtaining approximately-consistent bioactivities and approximately-consistent biodegradation rates by balancing the mole ratios of the hydrophilic groups to carbon atoms in the materials of various layers, and the appearance, the functions and the physical and mechanical properties of a product remain unchanged.

A resin composition can be used as a raw material of a primer, and capable of superior solution stability, adhesion to a non-polar substrate, and/or chipping resistance in a coating film formed from the composition. The resin composition includes a component A: a modified polyolefin resin, and a component B: a polymer having a functional group at least in a terminal thereof, and having a number-average molecular weight in a range of 1,000 to 20,000, and containing a constituent unit (i) derived from a (meth)acrylate ester of a formula, CH.sub.2═C(R.sup.1)COOR.sup.2, wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a —C.sub.nH.sub.2n+1 group, and n is an integer of 1 to 18)

A resin composition can be used as a raw material of a primer, and capable of superior solution stability, adhesion to a non-polar substrate, and/or chipping resistance in a coating film formed from the composition. The resin composition includes a component A: a modified polyolefin resin, and a component B: a polymer having a functional group at least in a terminal thereof, and having a number-average molecular weight in a range of 1,000 to 20,000, and containing a constituent unit (i) derived from a (meth)acrylate ester of a formula, CH.sub.2═C(R.sup.1)COOR.sup.2, wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a —C.sub.nH.sub.2n+1 group, and n is an integer of 1 to 18)

Disclosed is a glass fiber composite material composition having further improved compatibility between glass fibers and polypropylene and thus maximized interfacial adhesion between the resin and the glass fibers in a glass fiber composite material. The present invention provides a glass fiber composite material composition comprising: (A) 60-93% by weight of polypropylene; (B) 1-30% by weight of glass fiber sized with a silane-based compound; and (C) 1-10% by weight of a polypropylene resin modified with maleic anhydride and a methacryloxysilane-based compound.

Disclosed is a glass fiber composite material composition having further improved compatibility between glass fibers and polypropylene and thus maximized interfacial adhesion between the resin and the glass fibers in a glass fiber composite material. The present invention provides a glass fiber composite material composition comprising: (A) 60-93% by weight of polypropylene; (B) 1-30% by weight of glass fiber sized with a silane-based compound; and (C) 1-10% by weight of a polypropylene resin modified with maleic anhydride and a methacryloxysilane-based compound.

There are provided a resin composition that is suitable for the production of a flame-retardant molded article and that can provide high flame retardancy even with a small amount of flame retardant added, and a flame retardancy determination method for determining the flame retardancy of a resin composition. The resin composition of the present invention contains a thermoplastic resin, a cellulosic material, and a phosphate flame retardant and satisfies relational expressions (1) and (2) (where in expressions (1) and (2), T.sub.P, T.sub.B, and T.sub.CMP are temperatures at weight loss rate peaks in thermogravimetric analysis, T.sub.P is a temperature ( C.) at a weight loss rate peak of the thermoplastic resin, T.sub.B is a temperature ( C.) at a weight loss rate peak of the cellulosic material, and T.sub.CMP is a temperature ( C.) at a weight loss rate peak of the resin composition. When the resin composition has two weight loss rate peaks, T.sub.CMP is a temperature at a peak on a lower temperature side).

There are provided a resin composition that is suitable for the production of a flame-retardant molded article and that can provide high flame retardancy even with a small amount of flame retardant added, and a flame retardancy determination method for determining the flame retardancy of a resin composition. The resin composition of the present invention contains a thermoplastic resin, a cellulosic material, and a phosphate flame retardant and satisfies relational expressions (1) and (2) (where in expressions (1) and (2), T.sub.P, T.sub.B, and T.sub.CMP are temperatures at weight loss rate peaks in thermogravimetric analysis, T.sub.P is a temperature ( C.) at a weight loss rate peak of the thermoplastic resin, T.sub.B is a temperature ( C.) at a weight loss rate peak of the cellulosic material, and T.sub.CMP is a temperature ( C.) at a weight loss rate peak of the resin composition. When the resin composition has two weight loss rate peaks, T.sub.CMP is a temperature at a peak on a lower temperature side).

Provided is an epoxy resin composition that can achieve excellent low dielectric characteristics and high adhesive strength to metal. Specifically, provided is an epoxy resin composition comprising organic fine particles and an epoxy resin having a specific structure.

Provided is an epoxy resin composition that can achieve excellent low dielectric characteristics and high adhesive strength to metal. Specifically, provided is an epoxy resin composition comprising organic fine particles and an epoxy resin having a specific structure.