Master batch for use in the production of bi-axially oriented polyalkylene films
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Mar 17, 1997
filing date -
Sep 16, 1994
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Abstract
The invention is directed to a masterbatch for the production of biaxially oriented polyalkylene films which, based on the total amount, contains in a matrix of polyalkylene homopolymer or copolymer from 1 to 50% by weight of spherical solid silicate particles and optionally, from 0.1 to 15% by weight of a surface-modifying reagent which reacts with the surface of the silicate, thus improving the adherence between the silicate and the polyalkylene. The invention is also directed to a process for the production of such a masterbatch, its use in the production of biaxially oriented polyalkylene films, and to biaxially oriented, co-extruded multilayer polyalkylene films.
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