Masterbatch, preform, blow-molded bottle, beverage product, film, method for producing preform, and method for producing blow-molded bottle

A method for producing a molded object, the method comprising:

• preparing a masterbatch comprising:
• a polyester resin (A), comprising:
• a structural unit (A-1) derived from terephthalic acid;
• and
• a structural unit (A-2) derived from an aliphatic diol;
• and
• a polyester resin (B), in comprising:
• a structural unit (B-1) derived from a 2,5-furandicarboxylic acid;
• and
• a structural unit (B-2) derived from 1,2-ethanediol;
• and
• melt-kneading the masterbatch and the polyester resin (A) separately to form the molded object,
• wherein in the masterbatch a mass percentage of the polyester resin (B) relative to a total mass of the polyester resin (A) and the polyester resin (B) is 90 mass % or less, and
• wherein the masterbatch has an intrinsic viscosity of 0.50 dl/g to 1.20 dl/g as determined by dissolving a 0.25 g portion of the masterbatch in a 50 ml mixed solvent of 50:50 mass ratio of phenol to 1,1,2,2-tetrachloroethane and measuring at 30° C. using an Ubbelohde viscometer, wherein a Huggins constant is set to 0.32.

A preform for a bottle formed of a resin composition, the resin composition comprising:

• a polyester resin (A), comprising:
• a structural unit (A-1) derived from terephthalic acid;
• and
• a structural unit (A-2) derived from an aliphatic diol;
• and
• a polyester resin (B), comprising:
• a structural unit (B-1) derived from a 2,5-furandicarboxylic acid;
• and
• a structural unit (B-2) derived from 1,2-ethanediol,
• wherein a mass percentage of the polyester resin (B) relative to a total mass of the polyester resin (A) and the polyester resin (B) is 5 to 25 mass %,
• wherein an intrinsic viscosity is 0.65 dl/g or more and 1.00 dl/g or less as determined by dissolving a 0.25 g sample, cut out from the preform, in a 50 ml mixed solvent of 50:50 mass ratio of phenol to 1,1,2,2-tetrachloroethane and measuring at 30° C. using an Ubbelohde viscometer, wherein a Huggins constant is set to 0.32, and
• wherein a haze, measured in accordance with JIS K 7136:
• 2000 “Plastics-Determination of haze for transparent materials” except that a light flux is focused on a 7.0 mm-square, is 0.1 to 8%.

A blow-molded bottle formed of a resin composition, the resin composition comprising:

• a polyester resin (A), comprising:
• a structural unit (A-1) derived from terephthalic acid;
• and
• a structural unit (A-2) derived from an aliphatic diol;
• and
• a polyester resin (B), comprising:
• a structural unit (B-1) derived from a 2,5-furandicarboxylic acid;
• and
• a structural unit (B-2) derived from 1,2-ethanediol,
• wherein a mass percentage of the polyester resin (B) relative to a total mass of the polyester resin (A) and the polyester resin (B) is 5 to 25 mass %,
• wherein an intrinsic viscosity is 0.65 dl/g or more and 1.00 dl/g or less as determined by dissolving a 0.25 g sample, cut out from the blow-molded bottle, in a 50 ml mixed solvent of 50:50 mass ratio of phenol to 1,1,2,2-tetrachloroethane and measuring at 30° C. using an Ubbelohde viscometer, wherein a Huggins constant is set to 0.32, and
• wherein a haze, measured in accordance with JIS K 7136:
• 2000 “Plastics-Determination of haze for transparent materials” except that a light flux is focused on a 7.0 mm-square, is 0.1 to 20%.

A film formed of a resin composition, the resin composition comprising:

• a polyester resin (A), comprising:
• a structural unit (A-1) derived from terephthalic acid;
• and
• a structural unit (A-2) derived from an aliphatic diol;
• and
• a polyester resin (B), comprising:
• a structural unit (B-1) derived from a 2,5-furandicarboxylic acid;
• and
• a structural unit (B-2) derived from 1,2-ethanediol,
• wherein a mass percentage of the polyester resin (B) relative to a total mass of the polyester resin (A) and the polyester resin (B) is 1 to 90 mass %,
• wherein an intrinsic viscosity is 0.50 dl/g or more and 1.00 dl/g or less as determined by dissolving a 0.25 g portion of the film in a 50 ml mixed solvent of 50:50 mass ratio of phenol to 1,1,2,2-tetrachloroethane and measuring at 30° C. using an Ubbelohde viscometer, wherein a Huggins constant is set to 0.32, and
• wherein a haze, measured in accordance with JIS K 7136:
• 2000 “Plastics-Determination of haze for transparent materials” except that a light flux is focused on a 7.0 mm-square, is 0.01 to 6.0%.