Rubber mixture with improved abrasion

A rubber mixture having the composition comprising:

• from 30 to 100 phr of at least one diene rubber;
• from 20 to 200 phr of a filler;
• from 0 to 200 phr of other or further additives;
• wherein for class 2 silanes for PC tire tread applications:
• a vulcanization system of sulfur comprising elemental sulfur, sulfur donor and silane with a sulfur concentration caused by these ingredients;
• said sulfur concentration is 0.035 to 0.07 moles per 100 parts by weight of the rubber elastomer;
• free sulfur is 20 to 50 mole %;
• sulfur donor is 5 to 20 mole %;
• silane 50 to 70 mole %;
• if S:Si <1.6, no of Si atoms >=1 Mw per Si-atom ratio <390 g/mol;
• silica amounts to 45 to 150 phr;
• and
• 0.01 to 10 phr of at least one vulcanization accelerator;
• and all of the mole percentages are referred to the sulfur concentration of the vulcanization system.

A rubber mixture having the composition comprising:

• from 30 to 100 phr of at least one diene rubber;
• from 20 to 200 phr of a filler;
• from 0 to 200 phr of other or further additives, wherein for tire sidewall application:
• a vulcanization system of sulfur comprising elemental sulfur, sulfur donor and silane with a sulfur concentration caused by these ingredients;
• said sulfur concentration is 0.025 to 0.05 moles per 100 parts by weight of the rubber elastomer;
• free sulfur is 0 to 55 mole %;
• sulfur donor is 8 to 20 mole %;
• silane is 40 to 95 mole %;
• if S to Si-ratio in silane is >1.6, no of Si-atoms >1, Mw per Si-atom ratio <390 g/mol;
• silica amounts to 10 to 50 phr;
• and
• 0.01 to 10 phr of at least one vulcanization accelerator;
• and all of the mole percentages are referred to the sulfur concentration of the vulcanization system.

A rubber mixture having the composition comprising:

• from 30 to 100 phr of at least one diene rubber;
• from 20 to 200 phr of a filler;
• from 0 to 200 phr of other or further additives, wherein for truck tread applications:
• a vulcanization system of sulfur comprising elemental sulfur, sulfur donor and silane with a sulfur concentration caused by these ingredients;
• said sulfur concentration is 0.025 to 0.05 moles per 100 parts by weight of the rubber elastomer;
• free sulfur is 0 to 55 mole %;
• sulfur donor is 8 to 15 mole %;
• silane is 40 to 95 mole %;
• if Mw per Si-atom ratio <390 g/mol;
• silica amounts to 20 per 60 phr;
• and
• 0.01 to 10 phr of at least one vulcanization accelerator;
• and all of the mole percentages are referred to the sulfur concentration of the vulcanization system.