Expanded composite polystyrene-based resin particles and expanded molded article thereof

摘要

Expanded composite polystyrene-based resin particles having a plurality of cells and cell membranes separating the plurality of cells, said cell membranes including a polystyrene-based resin forming a continuous phase and polyacrylic acid alkyl ester-based resin fine particles dispersed in said continuous phase to form a dispersed phase, and said polystyrene-based resin being complexed with said polyacrylic acid alkyl ester-based resin fine particles, wherein said dispersed phase is present in the form of a plurality of layers in a cell membrane thickness direction in a cell membrane cross-section of said expanded composite polystyrene-based resin particles.

主权项

1. Expanded composite polystyrene-based resin particles having a plurality of cells and cell membranes separating the plurality of cells, said cell membranes including a polystyrene-based resin forming a continuous phase and polyacrylic acid alkyl ester-based resin fine particles dispersed in said continuous phase to form a dispersed phase, and said polystyrene-based resin being complexed with said polyacrylic acid alkyl ester-based resin fine particles,
wherein said dispersed phase is present in a form of a plurality of layers in a cell membrane thickness direction in a cell membrane cross-section of said expanded composite polystyrene-based resin particles, and wherein said expanded composite polystyrene-based resin particles further comprise a component derived from a polybutadiene-terminated acrylate, wherein said polybutadiene-terminated acrylate is a monomer having polybutadiene molecules containing
repetitive unit (1) by 1,2 bonding andrepetitive unit (2) by 1,4 bonding, andfunctional (meth)acryloyl group represented by formula (3) at one or both terminal ends