Additive for synthetic resins and synthetic resin compositions
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United States of America Patent
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Dec 1, 1998
Grant Date -
N/A
app pub date -
Jan 12, 1998
filing date -
Jul 12, 1995
priority date (Note) -
Expired
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Abstract
An additive for synthetic resins is provided. The additive comprises particles surface-coated with a petaloid porous hydroxyapatite having a chemical formula Ca.sub.5 (PO.sub.4 ).sub.3 (OH) and the petaloid porous hydroxyapatite is not less than 5% by weight of the particles. The additive can be added to any kinds of synthetic resins. If the additive is used in a polyethylene film, blocking of the film is not only prevented, but good transparency and good anti-scratch ability are imparted, and if the additive is used in a polyester, a film having good slipperiness, anti-abrasion and less coarse protrusions can be provided.
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