POLYMER COMPOSITION WITH FILLER, ITS PRODUCTION METHOD AND ITS USE Russian patent published in 2022 - IPC C08L27/06 C08L33/12 C08L33/08 C08L33/10 C08K3/13 C08K3/26 

FIELD: chemistry.

SUBSTANCE: present invention relates to a composition for preparation of filled halogenated polymer compositions with modified impact viscosity, showing optimal behavior in a melt, its production method, and a product containing this composition. The specified composition contains a) from 0.01 to 20 phr relatively to halogen-containing thermoplastic polymer of (meth)acrylate copolymer (A1) selected from copolymer containing at least 50 wt.% of methylmethacrylate, b) from 1 to 250 phr relatively to halogen-containing thermoplastic polymer of filler (F), c) halogen-containing thermoplastic polymer, and d) from 0.15 to 12 phr of impact viscosity modifier (IM1). (Meth)acrylate copolymer (A1) has a glass transition temperature from 65 to 100°C. Impact viscosity modifier (IM1) is polymer particles with a multilayer structure, which contains at least one layer (IM1L1) containing polymer (L1) having a glass transition temperature of less than 0°C, and at least one another layer (IM1L2) containing polymer (L2) having a glass transition temperature of more than 45°C. The mass ratio of layer (IM1L1)/layer (IM1L2) in polymer obtained by multistage polymerization is in the range by weight between 85/15 and 97/3.

EFFECT: resulting composition can be used for optimization of behavior in a melt, in particular, a speed of melting of halogenated polymer compositions with modified impact viscosity, and at the same time it does not significantly impact on characteristics of impact viscosity of halogenated polymer compositions.

25 cl, 3 tbl, 1 ex