SULPHIDE-MODIFIED ELASTOMERIC POLYMERS Russian patent published in 2012 - IPC C08L21/00 C08L9/00 C08K5/372 B60C1/00 C08C19/20 

FIELD: chemistry.

SUBSTANCE: elastomeric composition contains a polymer obtained from a first composition. The first composition contains a non-cross-linked elastomeric polymer obtained from olefin, conjugated olefin and combinations thereof, and a sulphide modifier. The modifier has formula 1: AS-Y-Zm, where Y is (C₁₂-C₁₀₀) aralkyl, (C₁₂-C₁₀₀) aryl, (C₁₂-C₁₀₀) alkyl, or (C₁₂-C₁₀₀) dialkylether (alkyl-O-alkyl), and where each may be optionally substituted with (C₁-C₄) alkyl, (C₁-C₄) alkoxy, (C₇-C₁₆) aryl, (C₇-C₁₆) aralkyl, nitrile, amine, NO₂, alkoxy, or thioalkyl; S is sulphur; A is hydrogen, -(S)_p-R1 or -MR2R3R4; Z is -SH, -S-MR5R6R7, -S-(S)_P-R8, -NR9R10, -NR11COR12, -O-CO-R13, -NCO or -COOR14; M is silicon or tin; N is nitrogen; O is oxygen; m is the number one, two or three; p is the number one, two, three, four or five; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are the same or different, and are each, independently, selected from hydrogen (H), (C₁-C₁₆) alkyl, (C₆-C₁₆) aryl, (C₇-C₁₆) aralkyl or (C₃-C₃₀) tri(hydrocarbyl)silyl, and where the hydrocarbyl groups are each independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₆) aryl, or (C₇-C₁₆) aralkyl.

EFFECT: use of the modified non-cross-linked elastomeric polymers disclosed by the invention improves processability, reduces heating-up during dynamic deformation, increases maximum tensile stress and modulus of elasticity of vulcanisates.

30 cl, 9 tbl