Title:
エチレン−ビニルエステル系共重合体ケン化物組成物及びその製造方法
Document Type and Number:
Japanese Patent JP6848856
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide: an EVOH resin-based composition (pellet) which has a desired melt viscosity without increasing the boron content, thereby being effective for surging prevention; and a method for producing the resin composition. The EVOH-based resin composition contains a boric acid compound and the boric acid compound contains tetracoordinated boron. An EVOH-based resin paste containing a boric acid compounds is brought into contact with an aqueous solution containing a boric acid compound and alkali metal salt at an elevated temperature and an elevated pressure so that the amount of alkali metal salt is from 300 to 1000 ppm based on the EVOH-based resin paste, thereby converting the boron of the boric acid compound to tetracoordinated structure.
Inventors:
Nobuaki Sato
Taiji Kanda
Nakajima Ayano
Taiji Kanda
Nakajima Ayano
Application Number:
JP2017501732A
Publication Date:
March 24, 2021
Filing Date:
December 16, 2016
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C08L29/04; C08K3/38
Domestic Patent References:
| JP10067898A | ||||
| JP2001072823A | ||||
| JP2001146539A | ||||
| JP2001164059A | ||||
| JP2001354779A | ||||
| JP2002060499A | ||||
| JP2002284811A | ||||
| JP2003026887A | ||||
| JP2003097772A | ||||
| JP2004043022A |
Foreign References:
| WO2002053639A1 | ||||
| WO2013005807A1 |
Attorney, Agent or Firm:
Eriko Kamiya