FIELD: polymer materials.
SUBSTANCE: invention provides polymer composition containing one or several halogenated thermoplastic polymers and being characterized by RMFI between 1.1 and 6, where RMFI is ratio of melt flow indexes MFI8/2 and MFI0.3/1 measured in accordance with standard ASTM D1238. Invention also discloses preparation method and use for these compositions.
EFFECT: enabled preparation of compositions exhibiting a rheological property (stretching viscosity), which is characterized by elevated resistance to deformation during foaming.
14 cl, 2 dwg, 3 tbl, 8 ex
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