Thermoplastic resin composition and floor tile made of the same

1. A thermoplastic resin composition comprising:

a thermoplastic resin component (I) in an amount of 100 parts by mass; and

a filler (II) in an amount of 200 to 900 parts by mass,

wherein the thermoplastic resin component (I) comprises:

a block copolymer (A) in an amount of 5 to 90 mass %, the block copolymer (A) being at least one species selected from the group consisting of a block copolymer and a hydrogenated product thereof, the block copolymer having a polymer block (a1) comprising an aromatic vinyl compound unit(s) and a polymer block (a2) comprising a conjugated diene unit(s);

a polyolefin resin (B) in an amount of 5 to 90 mass %; and

a block copolymer (C) in an amount of 5 to 90 mass %, the block copolymer (C) having a polymer block formed from a repeating unit having a polar group, wherein

the block copolymer (C) is a first block copolymer (C-1) or a second block copolymer (C-2), wherein

the first block copolymer (C-1) is a block copolymer comprising a polymer block (c1) and a polymer block (c2), the polymer block (c1) being selected from the group consisting of a polyurethane polymer block, a polyester polymer block, a polyamide polymer block, a polycarbonate polymer block, and a (meth)acrylic acid ester polymer block, and the polymer block (c2) comprising at least one block copolymer selected from the group consisting of a block copolymer having a polymer block comprising an aromatic vinyl compound unit(s) and a polymer block comprising a conjugated diene unit(s) and a hydrogenated product thereof, and

the second block copolymer (C-2) is a (meth)acrylic acid ester block copolymer having a first (meth)acrylic acid ester polymer block, and a second (meth)acrylic acid ester polymer block which is different from the first (meth)acrylic acid ester polymer block.

2. A thermoplastic resin composition as described in claim 1 , wherein the block copolymer (A) has a glass transition temperature of −45° C. or higher and a polymer block (a1) content of 5 to 55 mass %.

3. A thermoplastic resin composition as described in claim 1 , wherein the thermoplastic resin component (I) further comprises a tackifying resin (D) in an amount of 1 to 20 mass %.

4. A floor tile formed from a thermoplastic resin composition as recited in claim 1 .

5. A thermoplastic resin composition as described in claim 2 , wherein the thermoplastic resin component (I) further comprises a tackifying resin (D) in an amount of 1 to 20 mass %.

6. A floor tile formed from a thermoplastic resin composition as recited in claim 2 .

7. A floor tile formed from a thermoplastic resin composition as recited in claim 3 .

8. A thermoplastic resin composition as described in claim 1 , wherein the thermoplastic resin component (I) comprises the polyolefin resin (B) in an amount of 10 to 70 mass % of 100 mass % of the thermoplastic resin component (I).

9. A thermoplastic resin composition as described in claim 8 , wherein the thermoplastic resin component (I) comprises the polyolefin resin (B) in an amount of 20 to 50 mass % of 100 mass % of the thermoplastic resin component (I).

10. A floor tile formed from a thermoplastic resin composition as recited in claim 5 .

11. A thermoplastic resin composition as described in claim 1 , wherein the thermoplastic resin component (I) comprises the block copolymer (C) in an amount of 5 to 70 mass % of 100 mass % of the thermoplastic resin component (I).

12. A thermoplastic resin composition as described in claim 2 , wherein the thermoplastic resin component (I) comprises the block copolymer (C) in an amount of 5 to 70 mass % of 100 mass % of the thermoplastic resin component (I).

13. A thermoplastic resin composition as described in claim 3 , wherein the thermoplastic resin component (I) comprises the tackifying resin (D) in an amount of 3 to 17 mass % of 100 mass % of the thermoplastic resin component (I).

14. A thermoplastic resin composition as described in claim 5 , wherein the thermoplastic resin component (I) comprises the tackifying resin (D) in an amount of 3 to 17 mass % of 100 mass % of the thermoplastic resin component (I).