FUNCTIONALISED ELASTOMERIC POLYMER COMPOSITIONS, METHODS FOR PRODUCTION THEREOF AND CROSS-LINKED RUBBER COMPOSITIONS THEREOF Russian patent published in 2019 - IPC C08L9/06 C08C19/25 C08C19/22 

FIELD: chemistry.

SUBSTANCE: present invention relates to an elastomeric polymer composition and preparation thereof. Described is a polymer composition for producing cross-linked rubber compounds containing modified polymers according to following Formula 1 and Formula 2:

Formula 1

Formula 2,

where P¹ and P² each independently represents a polymer chain obtained by anionic polymerisation of one or more polymerisable monomers selected from conjugated dienes and aromatic vinyl compounds, wherein each polymer chain P¹ and P² contains at least 40 wt. % of repeating units obtained by polymerisation of said conjugated dienes, and wherein at least anionic polymerisation of polymer chain P¹ is carried out in the presence of a compound of following Formula 9a:

Formula 9a,

where each R³¹ is independently selected from hydrogen, (C₁-C₁₀)alkyl, (C₆-C₁₂)aryl and (C₇-C₁₈) aralkyl; each R³², R³³ and R³⁴ is independently selected from hydrogen, (C₁-C₁₈) alkyl and (C₁-C₁₈) alkoxy; each R⁴¹ is independently selected from (C₁-C₁₀₀) alkyl and (C₂-C₁₀₀) alkenyl, where each R⁴¹ optionally substituted with one to three (C₆-C₁₂) with aryl groups and optionally linked to a structure of Formula 9a through an oligomer chain consisting of up to 25 monomer links selected from conjugated dienes, especially 1,3-butadiene and isoprene, and aromatic vinyl compounds, especially styrene and divinylbenzene; each M² is independently selected from lithium, sodium and potassium; and k, l and q are integers selected from 0, 1, 2 and 3; A¹, A² and A³ are independently selected from following Formula 3 to Formula 8:

Formula 3,

where each R¹ is independently selected from (C₁-C₁₆) alkyl; each R² is independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl and (C₇-C₁₈) aralkyl; a and b are integers independently selected from 0, 1 and 2, wherein a + b = 2; R³ is independently selected from divalent (C₁-C₁₆) alkyl, divalent (C₆-C₁₈) aryl, divalent (C₇-C₁₈) aralkyl and -R⁴-OR⁵-, where R⁴ and R⁵ are independently selected from divalent (C₁-C₆) alkyl; and Z is independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl, (C₇-C₁₈) aralkyl, (C=S)-SR⁶, where R⁶ is selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl and (C₇-C₁₈) aralkyl, and M¹(R⁷)_c(R⁸)_d, where M¹ is silicon or tin, each R⁷ is independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl and (C₇-C₁₈) aralkyl; each R⁸ is independently selected from -SR³-Si(OR¹)_r(R²)_s, where R¹, R² and R³ are as defined for Formula 3 above, r is an integer independently selected from 1, 2 and 3 and s is an integer independently selected from 0, 1 and 2, wherein r + s = 3; c is an integer independently selected from 2 and 3; d is an integer independently selected from 0 and 1; and c + d = 3;

Formula 4

Formula 5, where R⁹, R¹⁰, R¹¹ and R¹² are independently selected from hydrogen, (C₁-C₁₆) alkyl, (C₆-C₁₆) aryl and (C₇-C₁₆) aralkyl;

Formula 6

Formula 7,

where each R¹³, R¹⁴, R¹⁸ and R¹⁹ is independently selected from (C₁-C₁₆)alkyl; R¹⁵ and R²⁰ are independently selected from divalent (C₁-C₁₆) alkyl, divalent (C₆-C₁₈) aryl, divalent (C₇-C₁₈)aralkyl and -R²⁴-OR²⁵-, where R²⁴ and R²⁵ are independently selected from divalent (C₁-C₆) alkyl; R¹⁶ and R¹⁷ are independently selected from (C₁-C₁₆) alkyl and -SiR²⁶R²⁷R²⁸, where R²⁶, R²⁷ and R²⁸ are independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl and (C₇-C₁₈) aralkyl; each R²¹ and R²² is independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl and (C₇-C₁₈) aralkyl; each R²³ is independently selected from hydrogen and (C₁-C₆) alkyl; f, g, h and i are integers independently selected from 0, 1 and 2; f + g = 2; and h + i = 2;

Formula 8,

where each R²⁹ and R³⁰ is independently selected from (C₁-C₁₆) alkyl, (C₆-C₁₈) aryl, (C₇-C₁₈) aralkyl and vinyl; and j is an integer selected from 1 to 200; and wherein amount of polymer of Formula 1 ranges from 15 to 85 % in moles based on total amount of polymer of Formula 1 and polymer of Formula 2. Also described is a method of producing a polymer composition and a crosslinked polymer composition.

EFFECT: technical result is improved dynamic properties of cross-linked rubber compounds.

21 cl, 1 dwg, 9 tbl, 43 ex