Silane coupling agent composition and rubber composition comprising same

A silane coupling agent composition comprising (a) a silane compound and (b) at least one of a protein denaturant and a silanization reaction accelerator, wherein the silane compound is represented by the following Formula (1):

• wherein
• R1, R2, and R3 each independently represent a hydrocarbon group optionally containing an oxygen atom or a nitrogen atom, or a hydrogen atom;
• L is independently a hydrocarbon group optionally containing at least one heteroatom selected from the group consisting of nitrogen, oxygen, and sulfur;
• a is an integer of 0 or 1;
• b is an integer of 0 or 1;
• c is independently an integer of 0 or 1;
• d is independently an integer of 0 or 1;
• e is an integer of 0 to 5;
• R4, R5, R6, and R7 represent a hydrogen atom, a methyl group, or an alkyl group having 2 to 10 carbon atoms, or one of R4 or R5 and R6 or R7 optionally forms a crosslinked structure represented by —(CH2)f—;
• f is an integer of 1 to 5;
• R8, R9, R10, and R11 represent a hydrogen atom, a methyl group, or an alkyl group having 2 to 10 carbon atoms, or one of R8 or R9 and R10 or R11 optionally forms a crosslinked structure represented by —(CH2)g—;
• g is an integer of 1 to 5;
• and
• R12, R13, and R14 each independently represent a hydrogen atom, a methyl group, or an alkyl group having 2 to 10 carbon atoms.