Stabilization of textile fibers,films and other shaped objects of polymeric alpha-olefins
Abstract
Abstract POLYMERIC COMPOSITIONS BASED ON POLYOLEFINS AND COMPRISING NICKEL AND SULPHUR-CONTAINING STABILIZERS ARE PROTECTED AGAINST DISCOLORATION DURING PROCESSING AT HIGH TEMPERATURES BY INCORPORATING IN THE COMPOSITIONS A PHOSPHORUS DERIVATIVE HAVING THE GENERAL FORMULA: X(PO(OR) (OR''))N IN WHICH R ANDR'' WHICH MAY BE THE SAME OR DIFFERENT, REPRESENT HYDROGEN, ALKYL RADICALS CONTAINING FROM 1 TO 18 CARBON ATOMS, OR ARYL OR ALKARYL RADICALS CONTAINING FROM 6 TO 18 CARBON ATOMS; X IS AN ALKYL, ARYL, ALKYLARYL, ACYL RADICAL OF VALENCY N, WHICH MAY CONTAIN A HETEROATOM SUCH AS O, S, N, P AND THE LIKE, AND SUBSTITUENT GROUPS SUCH AS HYDROXY, ALKOXY, PHENOXYALKYL, CARBALKOXY, ACYL, AMINO, ALKYLAMINO, ARYLAMINO, ALKYLMERCAPTO. AN EXEMPLARY PHOSPHORUS DERIVATIVE WITHIN THE SCOPE OF THE INVENTION IS DIETHYLBENZYL-PHOSPHONATE. THE STABILIZATION AGAINST HEAT, LIGH AND AGEING OF FIBERS, FILMS, RAFFIA AND OTHER MANUFACTURED ARTICLES BASED ON ALPHAOLEFIN POLYMERS, IN PARTICULAR OF ARTICLES FORMED OF POLYPROPYLENE CONSISTING ESSENTIALLY OF ISOTACTIC MACROMOLECULES, IS DISCLOSED.
Inventors
- 👤 G Cantatore
- 👤 M Branchesi
Bibliographic Details
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