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1. (WO2018124234) ETHYLENE-VINYL ALCOHOL COPOLYMER PELLETS AND METHOD FOR PRODUCING ETHYLENE-VINYL ALCOHOL COPOLYMER PELLETS CONTAINING CONJUGATED POLYENE AND ALKALI EARTH METAL

Pub. No.:    WO/2018/124234    International Application No.:    PCT/JP2017/047095
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: C08L 29/04
C08F 2/38
C08F 8/12
C08F 216/06
C08K 3/22
C08K 3/24
C08K 5/01
C08K 5/09
C08K 5/098
C08K 5/101
Applicants: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
日本合成化学工業株式会社
Inventors: SENO Ryuta
妹尾 竜太
HATANAKA Makoto
畑中 誠
Title: ETHYLENE-VINYL ALCOHOL COPOLYMER PELLETS AND METHOD FOR PRODUCING ETHYLENE-VINYL ALCOHOL COPOLYMER PELLETS CONTAINING CONJUGATED POLYENE AND ALKALI EARTH METAL
Abstract:
Provided are ethylene-vinyl alcohol copolymer pellets that make it possible to suppress the occurrence of miniscule fish eyes having a diameter of 200 µm or less to an extremely high level and that are saponified ethylene-vinyl alcohol copolymer pellets containing a conjugated polyene and an alkali earth metal, said ethylene-vinyl alcohol copolymer pellets being characterized in that the content of the conjugated polyene in a pellet surface section is 30 ppb or more per pellet weight and the content of the alkali earth metal is 1-200 ppm per pellet weight.