Resin composition and resin molded article
A resin composition includes a polystyrene resin; a polyethylene terephthalate resin; and a glycidyl group-containing polyethylene graft copolymer, wherein a content of the polystyrene resin is from 10% by weight to 40% by weight and a content of the polyethylene terephthalate resin is from 60% by weight to 90% by weight, with respect to a total amount of the polystyrene resin and the polyethylene terephthalate resin, a content of the glycidyl group-containing polyethylene graft copolymer is from 3% by weight to 20% by weight with respect to 100 parts by weight of a total amount of the polystyrene resin and the polyethylene terephthalate resin, and the glycidyl group-containing polyethylene graft copolymer is a copolymer obtained by graft-polymerizing a polymerizable vinyl monomer to a main chain of a polyethylene copolymer constituted with a glycidyl group-containing (meth)acrylic acid ester unit and an ethylene unit.
1. A resin composition comprising:
a polystyrene resin;
a polyethylene terephthalate resin; and
a glycidyl group-containing polyethylene graft copolymer,
wherein:
a content of the polystyrene resin with respect to a total amount of the polystyrene resin and the polyethylene terephthalate resin is in a range of 10% by weight to 40% by weight;
a content of the polyethylene terephthalate resin with respect to a total amount of the polystyrene resin and the polyethylene terephthalate resin is in a range of 60% by weight to 90% by weight;
a content of the glycidyl group-containing polyethylene graft copolymer with respect to a total amount of the polystyrene resin and the polyethylene terephthalate resin is in a range of 3% by weight to 20% by weight;
a content of the polystyrene resin with respect to a total amount of the polystyrene resin, the polyethylene terephthalate resin, and the glycidyl group-containing poly ethylene graft copolymer is in a range of 33% by weight to 39% by weight;
a content of the polyethylene terephthalate resin with respect to the total amount of the polystyrene resin, the polyethylene terephthalate resin, and the glycidyl group-containing polyethylene graft copolymer is in a range of 50% by weight to 85% by weight;
a content of the glycidyl group-containing polyethylene graft copolymer with respect to the total amount of the polystyrene resin, the polyethylene terephthalate resin, and the glycidyl group-containing polyethylene graft copolymer is in a range of 2.9% by weight to 5.7% by weight; and
the glycidyl group-containing polyethylene graft copolymer is a copolymer obtained by graft-polymerizing a polymerizable vinyl monomer to a polyethylene copolymer comprising a glycidyl group-containing (meth)acrylic acid ester unit and an ethylene unit.
2. The resin composition according to claim 1 ,
wherein a content of the glycidyl group-containing (meth)acrylic acid ester unit with respect to the glycidyl group-containing polyethylene graft copolymer is in a range of 5% by weight to 20% by weight and a glass transition point of the polyethylene copolymer is 0° C. or lower.
3. The resin composition according to claim 1 ,
wherein the polymerizable vinyl monomer is styrene.
4. The resin composition according to claim 2 ,
wherein the polymerizable vinyl monomer is styrene.
5. The resin composition according to claim 1 ,
wherein an acid value of the polyethylene terephthalate resin is in the range of 10 eq/t to 15 eq/t.
6. The resin composition according to claim 2 ,
wherein an acid value of the polyethylene terephthalate resin is in the range of 10 eq/t to 15 eq/t.
7. The resin composition according to claim 3 ,
wherein an acid value of the polyethylene terephthalate resin is in the range of 10 eq/t to 15 eq/t.
8. The resin composition according to claim 4 ,
wherein an acid value of the polyethylene terephthalate resin is in the range of 10 eq/t to 15 eq/t.
9. The resin composition according to claim 1 ,
wherein:
the content of the polyethylene terephthalate resin with respect to a total amount of the polystyrene resin and the polyethylene terephthalate resin is in a range of 70% by weight to 80% by weight.
10. The resin composition according to claim 1 ,
wherein the glycidyl group-containing polyethylene graft copolymer has a weight average molecular weight of from 3,000 to 100,000.
11. A resin molded article containing the resin composition according to claim 1 .