FIELD: chemistry.
SUBSTANCE: invention relates to thermoplastic polymeric compositions for making carpet backing. The composition contains a naturally crystalline or semicrystalline thermoplastic polymer and a nucleating agent - ground glass, glass powder, broken glass or mixtures thereof, in amount of 10-70% in terms of the total weight of the composition and without reinforcing fibre. The composition has properties selected from a group comprising MT4 value less than approximately 0.125 and CT4 value less than approximately 0.1, measured through AACHEN test; time after which surface stickiness disappears less than approximately 1 hour; time for attaining rigidity of the backing less than approximately 75 hours; ignition time greater than approximately 13 seconds and self-extinction time less than approximately 60 seconds.
EFFECT: invention has better processing properties, high fire resistance and enables to make carpet backing with high stability of dimensions and improved crystalline structure.
20 cl, 2 tbl, 4 ex
