ALKYL ACRYLATE COPOLYMER MODIFIED ORIENTED POLYPROPYLENE FILMS, TAPES, FIBERS AND WOVEN AND NONWOVEN TEXTILES.

摘要

An alkyl acrylate copolymer modified oriented polypropylene film prepared from a composition comprising: at least one polypropylene polymer selected from the group consisting of polypropylene homopolymers; random copolymers or block copolymers of polypropylene and ethylene; and random terpolymers or block terpolymers of polypropylene, ethylene and one other olefin; and from 1 to 30 weight % or, in increasing order of preference, 2 to 30 weight %, 2 to 20 weight %, or 2 to 10 weight % of at least one ethylene/ alkyl acrylate copolymer, preferably a tubular reactor produced ethylene/alkyl acrylate copolymer; and optionally from 0.01 to 40 weight % or preferably 0.1 to 15 weight % of at least one additional component selected from the group consisting of fillers, delustrants, UV stabilizers, pigments and other additives; wherein the alkyl group of the alkyi acrylate has less than 6 carbon atoms; the alkyl acrylate is preferably present in the ethylene/alkyl acrylate copolymer in a range from 5 to 30 weight %, or preferably from 10 to 25 weight %; the alkyl acrylate is preferably methyl acrylate, ethyl acrylate, or butyl acrylate, or more preferably is methyl acrylate; and the film is prepared by drawing at a temperature below the melting point of the polypropylene polymer and at a draw ratio of greater than 3 or preferably of 4:1 to 10:1.