STABILIZED CRYSTALLINE PROPYLENE POLYMERS FOR MANUFACTURING HEAT-WELDED FIBERS Russian patent published in 2002 - IPC

Abstract RU 2180906 C2

FIELD: polymer materials. SUBSTANCE: stabilized crystalline propylene polymers, suitable for manufacturing nonwoven textile ware, contain as stabilizers mixture containing from 0.04 to less than 0.05% of organic phosphite or phosphonite selected from distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite, tetrakis(2,4-di- tert-butylphenyl)- 4,4'-diphenylene diphosphonite; 0.01 to 0.07% of sterically hindered amine selected from those described by following formulas: (n = 2-20), , ; (n = 2-20); and ; 0.05% of calcium stearate; and optionally 0.01% of 3-(3,5-di-di-tert-butyl-4-hydroxyphenyl) propionate. EFFECT: increased resource for nonwoven textile ware. 3 tbl, 23 ex

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RU 2 180 906 C2

Authors

Brankezi Millo Klementini Luchiano Span'Oli Leonardo

Dates

2002-03-27Published

1990-04-05Filed