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US 10,370,468 B2Granted
Saponified ethylene-vinyl ester-based copolymer pellet and producing method therefor
AssigneeMitsubishi Chemical Corporation
InventorsShinichi Hori, Nobuyuki Yamamoto, Takuya Nakajima
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Abstract
Provided is EVOH resin pellet capable of suppressing the occurrence of fish eye even in a resultant monolayer film, and the method for producing the same. The EVOH resin pellet contains a boron compound and the boron amount in a surface portion of the pellet is 1.7 ppm or less. After the EVOH resin pellet is made to contain the boron compound, the EVOH resin pellet is rinsed with a mixture of water and alcohol so that the amount of the boron compound in a surface portion can be reduced.
Claims7
A pellet, comprising:
- a saponified ethylene-vinyl ester-based copolymer pellet;
- and a boron compound;
- wherein a surface portion of the pellet contains 1.7 ppm or less of boron;
- wherein a total amount of boron in the pellet is 10 to 1000 ppm.
1 more element
Dependencies are inferred from the claim text.