Polymer compositions and additives
AssigneeImerys Minerals Limited
InventorsSara CAMMARANO, Michael BIRD
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Abstract
An antiblocking additive for use in polymer films, a masterbatch and polymer resin comprising the antiblocking additive, a polymer article, for example, a film, formed from the polymer resin, a talc particulate for use in or as antiblocking additive, and mineral blends for use in or as antiblocking additive.
Claims21
An antiblocking additive for use in polymer films, comprising a blend of a first inorganic particulate material selected from talc and diatomaceous earth, and a second inorganic particulate material selected from perlite and quartz.
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A talc particulate material for use in an antiblocking additive for a polymer film, wherein the talc particulate is milled under conditions that increase the morphological irregularity of the talc particulate.
A process for improving an optical property of a polymer film comprising quartz and/or perlite, said process comprising adding thereto, during manufacture of the polymer film, talc and/or diatomaceous earth.
Dependencies are inferred from the claim text.