RUBBER-REINFORCED VINYL AROMATIC (CO) Russian patent published in 2014 - IPC C08F279/02 C08F279/04 C08L51/04 C08L55/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber-reinforced vinyl aromatic (co)polymer, a method for production thereof and use of such a polymer. The rubber-reinforced vinyl-aromatic (co)polymer contains a polymer matrix and a rubber phase consisting of diene rubber which is dispersed and/or grafted to the polymer matrix. Said rubber phase is selected from at least one rubber from: (i) linear diene rubber consisting of polybutadiene with solution viscosity from 40 to 70 cP, measured in a solution of said rubber in amount of 5 wt % in styrene at temperature of 25°C; content of 1,2-vinyl from 5 to 35 wt % and content of 1,4-cis links from 20 to 85 wt %; (ii) diene rubber with a partially radial structure with solution viscosity of less than 70 cP, wherein at the end, up to 15 wt %, preferably from 1 to 12 wt %, of the polymer chains a tetrafunctional binding agent is attached in order to form a radial terminal structure of the chains of the linear diene rubber; (iii) trifunctional diene rubber with solution viscosity of less than 70 cP, i.e., linear diene rubber consisting of polybutadiene with solution viscosity from 40 to 70 cP, measured in a solution of said rubber in amount of 5 wt % in styrene at temperature of 25°C; content of 1,2 vinyl from 5 to 35 wt % and content of 1,4-cis links from 20 to 85 wt %, bonded with the trifunctional binding agent; (iv) mixture of linear diene rubber (i) and diene rubber (v) with a radial structure with maximum ratio (i)/(v) from 99.5/0.5 to 85/15 with solution viscosity of less than 70 cP.

EFFECT: obtaining rubber-reinforced vinyl aromatic (co)polymers for making articles with high lustre and mechanical properties.

7 cl, 1 tbl, 10 ex