公开(公告)号：US10246604B2

公开(公告)日：2019-04-02

申请号：US15664595

申请日：2017-07-31

Applicant: AGC Inc.

Inventor： Shintaro Fukunaga ,  Katsuya Ueno ,  Akio Ogawa ,  Yutaka Ohyama ,  Teruhiko Yasuda

IPC: C09D133/16 ,  C09D5/00 ,  D21H19/20 ,  D21H21/16 ,  C08F214/18 ,  C08F220/24 ,  C08F6/10 ,  C08K3/04 ,  C08F6/00

Abstract: To provide a method for producing an aqueous liquid containing a vinyl polymer, of which the production efficiency is high, without lowering the yield of the vinyl polymer. When removing a hydrophilic organic solvent from a mixed liquid comprising a vinyl polymer, the hydrophilic organic solvent and water to produce an aqueous liquid containing the vinyl polymer, a liquid phase and a gas phase are formed in a closed container, a part of the liquid of the liquid phase is formed into small droplets and brought into contact with the gas phase to vaporize the hydrophilic organic solvent, and the vaporized hydrophilic organic solvent is removed from the closed container. Specifically, for example, a closed container 10 having a liquid inlet 22, a gas outlet 30, a liquid outlet 21, a liquid inlet 22 and a liquid outlet 21 which are connected and having an external circulating system provided with means to control the temperature and the pressure of liquid, is filled with a mixed liquid 40 to form a liquid phase 50 and a gas phase 51, the mixed liquid 40 of the liquid phase 50 is circulated from the liquid outlet 21 to the external circulating system 20, and the temperature and the pressure of the mixed liquid 41 in the external circulating system 20 are controlled to conditions such that the hydrophilic organic solvent is easily vaporized in liquid droplets in the gas phase 51, followed by discharging the mixed liquid 41 in the form of the small droplets from the liquid inlet 22 to the gas phase 51 and draining the gas in the gas phase 51 from the gas outlet 30.

公开(公告)号：US11524439B2

公开(公告)日：2022-12-13

申请号：US17070999

申请日：2020-10-15

Applicant: AGC Inc.

Inventor： Yoshiaki Higuchi ,  Shintaro Fukunaga ,  Takatoshi Yaoita

IPC: B29C48/08 ,  B29C48/88 ,  B32B27/08 ,  B32B27/30

Abstract: To provide a process for producing a film excellent in water vapor barrier property, tensile elongations, and transparency. A resin material containing polychlorotrifluoroethylene (PCTFE) is melted and extruded into a film from an extrusion die, the extruded product is brought into contact with a cooling roll having a surface temperature of at most 120° C. in a state such that the surface temperature of the extruded product is higher than the crystallization temperature of PCTFE to form a film web, and the film web is subjected to heat treatment at from 80 to 200° C. to obtain a film.

公开(公告)号：US20210023756A1

公开(公告)日：2021-01-28

申请号：US17070990

申请日：2020-10-15

Applicant: AGC Inc.

Inventor： Yoshiaki Higuchi ,  Shintaro Fukunaga ,  Takatoshi Yaoita

IPC: B29C48/08 ,  B29C48/00 ,  B29C48/92 ,  B32B27/30

Abstract: To provide a film made of polychlorotrifluoroethylene (PCTFE), of which a laminate with other layer is less likely to curl when subjected to drawing.
A film comprising PCTFE, having thermal shrinkage rates within ±1.2% in MD and in TD when heated at 140° C. for 30 minutes and then cooled to 25° C., based on the dimension at 25° C.