Abstract: An easily tearable film includes polyamide resin components including more than 20 parts by mass and 70 parts by mass or less of a semi-aromatic polyamide resin A and less than 80 parts by mass and 30 parts by mass or more of an aliphatic polyamide resin B; wherein the semi-aromatic polyamide resin A is constituted of a diamine-derived constituent unit and a dicarboxylic acid-derived constituent unit; 60 mol % or more of the diamine-derived constituent units are derived from metaxylylenediamine; 60 mol % or more of the dicarboxylic acid-derived constituent units are derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 10 carbons; and the molar concentration of phosphorus atoms, the total molar concentration of alkali metal atoms and the total molar concentration of alkaline earth metal atoms, and Mn of the semi-aromatic polyamide resin satisfy predetermined relationships.

Abstract: Provided is a stretched film stretched stretchable to a high draw ratio a method for manufacturing the stretched film, and, a polyamide resin composition used for manufacturing the stretched film. The stretched film containing 0.5 to 15 parts by weight of a compound represented by Formula (1) per 100 parts by weight of a polyamide resin, wherein the polyamide resin is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; 50% by mole or more of the structural unit derived from diamine is derived from xylylenediamine, and 50% by mole or more of the structural unit derived from dicarboxylic acid is derived from a straight-chain aliphatic am-dicarboxylic acid having 4 to 20 carbon atoms: wherein R1 represents an alkyl group having 1 to 10 carbon atoms, R2 represents an alkyl group having 2 to 12 carbon atoms, and n represents an integer of 1 to 3.

Abstract: An object of the present invention is to provide a multilayer container in which yellowing of a regenerated polyester at the time of recycle is suppressed. Furthermore, another object of the present invention is to provide a method for producing a regenerated polyester from the aforementioned multilayer container. The multilayer container of the present invention includes a polyester resin composition layer containing a polyester resin (X) and an antioxidant; and a polyamide resin composition layer containing a polyamide resin (Y) and a cobalt salt, wherein the polyamide resin (Y) has a structural unit derived from a diamine and a structural unit derived from a dicarboxylic acid; 50 mol % or more of the structural unit derived from a diamine is a structural unit derived from xylylenediamine; the content of the antioxidant in the polyester resin composition layer is 0.

Abstract: Provided is a stretched film stretched stretchable to a high draw ratio a method for manufacturing the stretched film, and, a polyamide resin composition used for manufacturing the stretched film. The stretched film containing 0.5 to 15 parts by weight of a compound represented by Formula (1) per 100 parts by weight of a polyamide resin, wherein the polyamide resin is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; 50% by mole or more of the structural unit derived from diamine is derived from xylylenediamine, and 50% by mole or more of the structural unit derived from dicarboxylic acid is derived from a straight-chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms: wherein R1 represents an alkyl group having 1 to 10 carbon atoms, R2 represents an alkyl group having 2 to 12 carbon atoms, and n represents an integer of 1 to 3.

Abstract: Provided is a highly durable polyamide resin fiber, a method for manufacturing such polyamide resin fiber, a polyamide resin composition, a woven fabric and a knitted fabric. The A polyamide resin fiber comprising 0.5 to 15 parts by weight of a compound represented by Formula (1), per 100 parts by weight of a polyamide resin, the polyamide resin being composed of a diamine-derived structural unit and a dicarboxylic acid-derived structural unit, 50 mol % or more of the diamine-derived structural unit being derived from xylylenediamine, and 50 mol % or more of the dicarboxylic acid-derived structural unit being derived from a straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms: in Formula (1), R1 represents an alkyl group having 1 to 10 carbon atoms, R2 represents an alkyl group having 2 to 12 carbon atoms, and n represents an integer of 1 to 3.

Abstract: An object of the present invention is to provide a multilayer container in which yellowing of a regenerated polyester at the time of recycle is suppressed. Furthermore, another object of the present invention is to provide a method for producing a regenerated polyester from the aforementioned multilayer container. The multilayer container of the present invention includes a polyester resin composition layer containing a polyester resin (X) and an antioxidant; and a polyamide resin composition layer containing a polyamide resin (Y) and a cobalt salt, wherein the polyamide resin (Y) has a structural unit derived from a diamine and a structural unit derived from a dicarboxylic acid; 50 mol % or more of the structural unit derived from a diamine is a structural unit derived from xylylenediamine; the content of the antioxidant in the polyester resin composition layer is 0.

Abstract: Provided is a polyamide resin composition comprising an elastomer etc, and a reactive polyamide resin excellent in reactivity. The polyamide resin composition comprises 0.5 to 100 parts by mass of an elastomer per 100 parts by mass of a reactive polyamide resin, wherein the reactive polyamide resin obtained by polycondensing a diamine (A) containing 70 mol % or more of a diamine structural unit derived from xylylenediamine and a dicarboxylic acid (B) containing 50 mol % or more of a dicarboxylic acid structural unit derived from sebacic acid, and has a concentration of reactive functional groups of 100 ?eq/g or more and a molar ratio of reacted diamine to reacted dicarboxylic acid (the number of moles of reacted diamine/the number of moles of reacted dicarboxylic acid) of 1.0 or more.

Abstract: Provided is a polyamide resin composition comprising an elastomer etc, and a reactive polyamide resin excellent in reactivity. The polyamide resin composition comprises 0.5 to 100 parts by mass of an elastomer per 100 parts by mass of a reactive polyamide resin, wherein the reactive polyamide resin obtained by polycondensing a diamine (A) containing 70 mol % or more of a diamine structural unit derived from xylylenediamine and a dicarboxylic acid (B) containing 50 mol % or more of a dicarboxylic acid structural unit derived from sebacic acid, and has a concentration of reactive functional groups of 100 ?eq/g or more and a molar ratio of reacted diamine to reacted dicarboxylic acid (the number of moles of reacted diamine/the number of moles of reacted dicarboxylic acid) of 1.0 or more.