Polyester sheet, polyester molded article, polyester resin masterbatch
AssigneeTomoya Co., Ltd.
InventorsYukitaka Kuroda, Yoshihiro Kitaguchi, Toshiyuki Uehara
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Abstract
There is prepared a polyester sheet having a surface layer in which 0.05 to 2.0% by weight of an ester compound, which is synthesized by using a polyvalent organic acid having three or more carboxyl groups and an aliphatic monohydric alcohol having eight or more carbon atoms, and 0.01 to 0.5% by weight of inert inorganic particles having an average particle diameter of 2 to 15 μm, are blended into a polyethylene terephthalate-based polymer. Accordingly, the polyester sheet has a rational balance between sliding properties and transparency.
Claims9
A polyester sheet comprising 0.2 to 2.0% by weight of an ester compound, which is synthesized by using a polyvalent organic acid having three or more carboxyl groups with a benzene ring, and an aliphatic monohydric alcohol having eight or more carbon atoms, and 0.01 to 0.5% by weight of inert inorganic particles, said inorganic particles comprises a first set of inert inorganic particles and a second set of inert organic particles, the first set of inorganic particles having a first average particle diameter of 2 to 5 μm and the second set of inert inorganic particles having a second average particle diameter of 7 to 15 μm , said ester compound and said inorganic particles are blended into a polyethylene terephthalate-based polymer, wherein the polyester sheet is amorphous.
A polyester sheet comprising a polyethylene terephthalate-based polymer is used as a substrate layer of the sheet, and
- an amorphous polyethylene terephthalate-based polymer composition is used as at least one surface layer of the sheet, wherein the polyethylene terephthalate-based polymer composition is prepared by blending 0.2 to 2.0% by weight of an ester compound, which is synthesized by using a polyvalent organic acid having three or more carboxyl groups with a benzene ring, and an aliphatic monohydric alcohol having eight or more carbon atoms, and 0.01 to 0.5% by weight of inert inorganic particles, said inorganic particles comprises a first set of inert inorganic particles and a second set of inert organic particles, the first set of inorganic particles having a first average particle diameter of 2 to 5 μm and the second set of inert inorganic particles having a second average particle diameter of 7 to 15 μm.
Dependencies are inferred from the claim text.