FIELD: chemistry.
SUBSTANCE: invention relates to concentrate of additives for polyolefin processing. The concentrate contains polybutylene-1, polypropylene and from 5% to 6% of one or more additives. The concentrates compound a product, which can be added to various polyolefin for adding additives. Colored polypropylene fiber is prepared by mixing polyolefin with concentrate containing pigments with further moulding. The concentrates are used for volume coloring of polyolefines.
EFFECT: precisely, invention simplifies coloring stage during extrusion of polypropylene fibers.
8 cl, 2 tbl, 1 dwg
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