FIELD: chemistry.
SUBSTANCE: invention relates to obtaining compositions for production of pressure pipes. Composition is obtained from mixture of (a) polyethylene resin, containing fractions which have large molecular weight and fractions which have low molecular weight, and (b) ionomer. As ionomer, copolymer, which represents copolymer of alpha-olefin and ethylene-unsaturated carboxylic acid and/or anhydride, partly neutralised by metal ions or amines.
EFFECT: obtaining resins which have high resistance to creep at low temperature preserving high resistance to slow growth of cracks and shock resistance.
8 cl, 6 tbl, 3 dwg
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