Nonextruded dispersions and concentrates of additives on olefin polymers
AssigneeBasell Poliolefine Italia S.r.l.
InventorUgo Zucchelli
Life of this patent
Estimating the term…
Abstract
A dispersion of one or more additives to be used in the processing of olefin polymers or copolymers, said dispersion comprising nonextruded particles of olefin polymers containing at least two immiscible polyolefinic phases and having internal voids partially or totally filled by the said additive or additives.
Claims8
A dispersion of one or more additives to be used in the processing of olefin polymers or copolymers, said dispersion comprising nonextruded particles of olefin polymers containing at least two immiscible polyolefinic phases and having internal voids partially or totally filled by the said additive or additives, wherein the amount of additive or additives present in the said internal voids is from 0.5 to 25% by weight with respect to the total weight of the dispersion.
A process for making a dispersion of one or more additives in olefin polymers comprising blending the additives with nonextruded particles of olefin polymers containing at least two immiscible polyolefinic phases and having internal voids, so that the additives partially or totally fill the voids and the amount of additive present in the internal voids is from 0.5 to 25% by weight with respect to the total weight of the dispersion.
Dependencies are inferred from the claim text.