NOT CONTAINING PLASTIFICATOR PRODUCTS FROM GRAFTED PVC COPOLYMERS Russian patent published in 2017 - IPC C08L51/00 C08F2/22 C08F265/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a mixture for the production of articles and a mixture for regulating the degree of plasticity of PVC articles that comprise at least two different graft copolymer vinyl chloride-obtained by the emulsion polymerization process, each of the at least two different graft copolymers comprising a graft base and A graft copolymer phase, which is at least partly comprised of vinyl chloride, characterized in that the graft copolymers are different from each other by a percentage mass distribution of the grafting inoculum and the graft copolymer phase, and wherein each graft copolymer has a glass transition temperature Tg of the graft base lower than the glass transition temperature Tg of the graft copolymer phase, the mixture comprising: A) from 1 to 99 wt %, with respect to the entire mixture, of the graft copolymer A containing 30 to 59 wt %, with respect to the graft copolymer of vinyl chloride A, at least in part derived from the vinyl chloride of the graft copolymer phase with a glass transition temperature Tg in the range of from greater than 20 to 120°C and 41 to 70 wt %, with respect to the graft copolymer of vinyl chloride A, the graft base with a glass transition temperature Tg in the range of -80 to 20°C and/or B) from 1 to 99 wt %, with respect to the total mixture, a graft copolymer of vinyl chloride B containing from 60 to 74 wt %, To a graft copolymer of vinyl chloride B at least partially derived from the vinyl chloride of a graft copolymer phase having a glass transition temperature Tg in the range of from greater than 20 to 120°C and from 26 to 40 wt %, with respect to the graft copolymer of vinyl chloride B, grafting bases with a glass transition temperature Tg in the range of from -80 to 20°C, and/or C) from 1 to 99 wt %, based on the total mixture of the graft copolymer of vinyl chloride C containing from 75 up to 95 wt %, with respect to the graft copolymer of vinyl chloride C, at least in part derived from the vinyl chloride of the graft copolymer phase with a glass transition temperature Tg in the range of from 20 to 120°C and from 5 to 25 wt %, with respect to the graft copolymer of vinyl chloride C, vaccine bases with a glass transition temperature Tg in from -80 to 20°C, and D) from 0 to 75 wt %, with respect to the whole mixture, of the other components, wherein the mixture must contain at least two of the graft copolymers mentioned in A), B) and C) and wherein the sum of the components of A), B) and C) is at least 25 wt %, and the sum of the components of A), B), C) and D) is 100 wt %; and each of the graft bases is made from (meth) acrylic acid ester. The invention also relates to a process for preparing such graft copolymers of vinyl chloride and mixtures thereof, to shaped articles obtained by using these mixtures.

EFFECT: obtaining materials based on vinyl chloride, which can be processed into films and molded articles with thermoplastic elastomeric properties.

18 cl, 1 tbl