Blocked mercaptosilane coupling agents for filled rubbers

A process for manufacturing a filler rubber comprising the steps of:

• mixing a rubber, an inorganic filler and a blocked mercaptosilane selected from the group consisting of 2-triethoxysilyl-1-ethyl thioacetate;
• 2-trimethoxysilyl-1-ethyl thioacetate;
• 2-(methyldimethoxysilyl)-1-ethyl thioacetate;
• 3-trimethoxysilyl-1-propyl thioacetate;
• triethoxysilylmethyl thioacetate;
• trimethoxysilylmethyl thioacetate;
• triisopropoxysilylmethyl thioacetate;
• methyldiethoxysilylmethyl thioacetate;
• methyldimethoxysilylmethyl thioacetate;
• methyldiisopropoxysilylmethyl thioacetate;
• dimethylethoxysilylmethyl thioacetate;
• dimethylmethoxysilylmethyl thioacetate;
• dimethylisopropoxysilylmethyl thioacetate;
• 2-triisopropoxysilyl-1-ethyl thioacetate;
• 2-(methyldiethoxysilyl)-1-ethyl thioacetate;
• 2-(methyldiisopropoxysilyl)-1-ethyl thioacetate;
• 2-(dimethylethoxysilyl)-1-ethyl thioacetate;
• 2-(dimethylmethoxysilyl)-1-ethyl thioacetate;
• 2-(dimethylisopropoxysilyl)-1-ethyl thioacetate;
• 3-triethoxysilyl-1-propyl thioacetate;
• 3-triisopropoxysilyl-1-propyl thioacetate;
• 3-methyldiethoxysilyl-1-propyl thioacetate;
• 3-methyldimethoxysilyl-1-propyl thioacetate;
• 3-methyldiisopropoxysilyl-1-propyl thioacetate;
• 1-(2-triethoxysilyl-1-ethyl)-4-thioacetylcyclohexane;
• 1-(2-triethoxysilyl-1-ethyl)-3-thioacetylcyclohexane;
• 2-triethoxysilyl-5-thioacetylnorbornene;
• 2-triethoxysilyl-4-thioacetylnorbornene;
• 2-(2-triethoxysilyl-1-ethyl)-5-thioacetylnorbornene;
• 2-(2-triethoxysilyl-1-ethyl)-4-thioacetylnorbornene;
• 1-(1-oxo-2-thia-5-triethoxysilylpenyl)benzoic acid;
• 6-triethoxysilyl-1-hexyl thioacetate;
• 1-triethoxysilyl-5-hexyl thioacetate;
• 8-triethoxysilyl-1-octyl thioacetate;
• 1-triethoxysilyl-7-octyl thioacetate;
• 6-triethoxysilyl-1-hexyl thioacetate;
• 1-triethoxysilyl-5-octyl thioacetate;
• 8-trimethoxysilyl-1-octyl thioacetate;
• 1-trimethoxysilyl-7-octyl thioacetate;
• 10-triethoxysilyl-1-decyl thioacetate;
• 1-triethoxysilyl-9-decyl thioacetate;
• 1-triethoxysilyl-2-butyl thioacetate;
• 1-triethoxysilyl-3-butyl thioacetate;
• 1-triethoxysilyl-3-methyl-2-butyl thioacetate;
• 1-triethoxysilyl-3-methyl-3-butyl thioacetate;
• 3-trimethoxysilyl-1-propyl thiooctoate;
• 3-triethoxysilyl-1-propyl thiopalmitate;
• 3-triethoxysilyl-1-propyl thiooctoate;
• 3-triethoxysilyl-1-propyl thiobenzoate;
• 3-triethoxysilyl-1-propyl thio-2-ethylhexanoate;
• 3-methyldiacetoxysilyl-1-propyl thioacetate;
• 3-triacetoxysilyl-1-propyl thioacetate;
• 2-methyldiacetoxysilyl-1-ethyl thioacetate;
• 2-triacetoxysilyl-1-ethyl thioacetate;
• 1-methyldiacetoxysilyl-1-ethyl thioacetate;
• 1-triacetoxysilyl-1-ethyl thioacetate;
• tris-(3-triethoxysilyl-1-propyl)trithiophosphate;
• bis-(3-triethoxysilyl-1-propyl)methyldithiophosphonate;
• bis-(3-triethoxysilyl-1-propyl)ethyldithiophosphonate;
• 3-triethoxysilyl-1-propyldimethylthiophosphinate;
• 3-triethoxysilyl-1-propyldiethylthiophosphinate;
• tris-(3-triethoxysilyl-1-propyl)tetrathiophosphate;
• bis-(3-triethoxysilyl-1-propyl)methyltrithiophosphonate;
• bis-(3-triethoxysilyl-1-propyl)ethyltrithiophosphonate;
• 3-triethoxysilyl-1-propyldimethyldithiophosphinate;
• 3-triethoxysilyl-1-propyldiethyldithiophosphinate;
• tris-(3-methyldimethoxysilyl-1-propyl)trithiophosphate;
• bis-(3-methyldimethoxysilyl-1-propyl)methyldithiophosphonate;
• bis-(3-methyldimethoxysilyl-1-propyl)ethyldithiophosphonate;
• 3-methyldimethoxysilyl-1-propyldimethylthiophosphinate;
• 3-methyldimethoxysilyl-1-propyldiethylthiophosphinate;
• 3-triethoxysilyl-1-propylmethylthiosulphate;
• 3-triethoxysilyl-1-propylmethanethiosulphonate;
• 3-triethoxysilyl-1-propylethanethiosulphonate;
• 3-triethoxysilyl-1-propylbenzenethiosulphonate;
• 3-triethoxysilyl-1-propyltoluenethiosulphonate;
• 3-triethoxysilyl-1-propylnaphthalenethiosulphonate;
• 3-triethoxysilyl-1-propylxylenethiosulphonate;
• triethoxysilylmethylmethylthiosulphate;
• triethoxysilylmethylmethanethiosulphonate;
• triethoxysilylmethylethanethiosulphonate;
• triethoxysilylmethylbenzenethiosulphonate;
• triethoxysilylmethyltoluenethiosulphonate;
• triethoxysilylmethylnaphthalenethiosulphonate;
• and triethoxysilylmethylxylenethiosulphonate, to produce a rubber mixture;
• mixing into the rubber mixture a deblocking agent to deblock the blocked mercaptosilane, and a curing agent;
• and
• allowing the rubber mixture to cure.