Thermoplastic polyurethane based coating composition

A coated substrate having inner surface coated with at least one thermoplastic polyurethane coating composition comprising a polyurethane and at least one wax, wherein the polyurethane is obtainable by a process comprising reacting

• a) at least one polyether polyol of general formula A,
• wherein R1 is selected from linear or branched, substituted or unsubstituted C2-C20 alkyl group, substituted or unsubstituted C2-C20 aryl group, linear or branched, substituted or unsubstituted C7-C20 arylalkyl group, linear or branched, substituted or unsubstituted C2-C20 alkylene group, linear or branched, or substituted or unsubstituted C3-C20 cycloalkyl group,
• m is an integer selected from 2 to 8, and
• n is an integer selected from 2 to 5;
• b) at least one polyisocyanate of general formula B
• wherein R2 is selected from linear or branched, substituted or unsubstituted C2-C20 alkyl group, substituted or unsubstituted C2-C20 aryl group, linear or branched, substituted or unsubstituted C7-C20 arylalkyl group, linear or branched, substituted or unsubstituted C2-C20 alkylene group, linear or branched, substituted or unsubstituted C3-C20 cycloalkyl group;
• and
• p is an integer selected from 2 to 4;
• c) at least one diol of general formula C
• wherein R3 is selected from linear or branched, substituted or unsubstituted C2-C20 alkyl group, substituted or unsubstituted C3-C20 cycloalkyl group,
• with a proviso that R1 is not —(CH2)4—.

A thermoplastic polyurethane coating composition comprising a polyurethane and at least one wax, wherein the polyurethane is obtainable by a process comprising reacting

• a) at least one polyether polyol of general formula A,
• wherein R1 is selected from linear or branched, substituted or unsubstituted C2-C20alkyl group, linear or branched, substituted or unsubstituted C7-C20 arylalkyl group, linear or branched, substituted or unsubstituted C2-C20 alkylene group, linear or branched, or substituted or unsubstituted C3-C20 cycloalkyl group,
• m is an integer selected from 2 to 8, and
• n is an integer selected from 2 to 5;
• b) at least one polyisocyanate of general formula B
• wherein R2 is selected from linear or branched, substituted or unsubstituted C2-C20alkyl group, linear or branched, substituted or unsubstituted C7-C20 arylalkyl group, linear or branched, substituted or unsubstituted C2-C20 alkylene group, linear or branched, substituted or unsubstituted C3-C20 cycloalkyl group, substituted or unsubstituted C6-C20 aryl group;
• and
• p is an integer selected from 2 to 4;
• c) at least one diol of general formula C
• wherein R3 is selected from linear or branched, substituted or unsubstituted C2-C20alkyl group, substituted or unsubstituted C3-C20 cycloalkyl group,
• with a proviso that R1 is not —(CH2)4—.
• wherein the coating composition is characterized by a shore A hardness in the range from 75.0 to 100.0 determined according to DIN ISO 7619, elongation at break in the range from 500 to 800 determined according to DIN ISO 7619, tensile strength in the range from 30.0 to 60.0 MPa determined according to ASTM D412 or DIN 53504-S2, melt flow resistance in the range from 50.0 to 100.0 g/10 min determined according to ASTM D1238 or DIN EN ISO 1133, and abrasion index in the range from 5.0 to 60.0 mm3 determined according to DIN ISO 4649.