Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for producing polyether polymer composition, polyether polymer composition, and solid electrolyte film

A technology of polyether polymers and compositions, applied in the direction of non-metallic conductors, etc., which can solve problems such as difficult molding, decreased mechanical properties, and gelation

Inactive Publication Date: 2008-03-26
ZEON CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors of the present invention have found the following problems: when the polyether polymer is molded into a film by extrusion molding or the like, partial crosslinking and gelation have already occurred in the storage stage before molding, etc. , molding is difficult, or even if it can be molded, its mechanical properties decline

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Using ethylene oxide and propylene oxide, slurry polymerization was carried out in n-hexane by a known method to obtain ethylene oxide units (EO) 90 mol%, propylene oxide units (PO) 10 mol%, weight A slurry of polyether polymer (EO / PO) having an average molecular weight (Mw) of 350,000 and a molecular weight distribution (Mw / Mn) of 10.2.

[0112] Prepare a 0.05 g / ml toluene solution of the antioxidant 4,4'-thiobis(3-methyl-6-tert-butylphenol) (Nokrac 300 manufactured by Ouchi Shinko Chemical Industry Co., Ltd.), and add this solution to the slurry In the slurry, the amount of the antioxidant was adjusted to 0.5% based on the amount of the polyether polymer, and stirred at 30° C. for 30 minutes to precipitate the antioxidant. Next, the slurry was filtered through a metal mesh, and the particles of the polyether polymer trapped on the metal mesh were vacuum-dried at 35° C. for 4 hours to obtain a polyether polymer composition. The amount of antioxidant in the composition...

Embodiment 2

[0115] Change the type of antioxidant to 4,4'-butylene bis(6-tert-butyl-m-cresol) (Ante-JiW-500 manufactured by Kawaguchi Chemical Co., Ltd.), and its addition amount is changed to 0.4%. The polyether polymer composition was prepared in the same manner as in Example 1. The amount of antioxidant in the composition is 0.37%, wherein almost the whole amount (90% or more) is attached to the surface of the polyether polymer particles.

[0116] The storage stability and processing stability of the above-mentioned polyether polymer composition were evaluated by checking whether or not the molecular weight decreased. The results are shown in Table 1.

Embodiment 3

[0129] In 3000 parts of the polyether polymer composition prepared by Example 1, add lithium bistrifluoromethanesulfonylimide, so that The ratio was 0.05, and a composition for a solid electrolyte was obtained. This composition was supplied to a twin-screw extruder and extruded at a screw temperature of 80°C, a rotation speed of 150 rpm, and a die temperature of 155°C. The obtained solid electrolyte film with a thickness of 20 μm was excellent in mechanical strength without cracking or breaking even when it was wound into a roll at a maximum winding speed of 20 m / min. In addition, the ionic conductivity is 1×10 -5 , showing excellent ionic conductivity.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A process for producing a polyether polymer composition, which comprises preparing a slurry comprising an organic solvent and a polyether polymer dispersed therein, adding to the slurry an antioxidant which is insoluble in the organic solvent and / or a stabilizer which is soluble in the solvent to disperse or dissolve the antioxidant and / or stabilizer, and then removing the organic solvent. Also provided is a polyether polymer composition which comprises polyether polymer particles and an antioxidant insoluble in an organic solvent in which the polymer particles are insoluble and / or a stabilizer soluble in the organic solvent, the composition satisfying at least one of the following (1), (2), and (3): (1) most of the antioxidant is adherent to the surface of the polymer particles, (2) the polyether polymer has a gel content of 5 wt.% or lower, and (3) most of the stabilizer is present in the polymer particles. The polyether polymer composition obtained by the production process and the polyether polymer composition satisfying at least one of the requirements (1), (2), and (3) give a solid electrolyte film having excellent mechanical properties.

Description

technical field [0001] The invention relates to a composition containing a polyether composition and an antioxidant, a preparation method thereof, and a solid electrolyte film obtained by molding the composition. Background technique [0002] It is known that mixing electrolyte salt compounds in polyether polymers such as polyethylene oxide and polypropylene oxide exhibits high ion conductivity and is suitable as a polymer solid electrolyte. In particular, polymer solid electrolyte films made of polyether polymers are used in lithium-ion batteries and the like. [0003] For example, Japanese Patent Application Laid-Open No. 63-136407 has proposed mixing an alkali metal salt into an ethylene oxide-propylene oxide copolymer to use as an ion-conductive solid electrolyte. In fact, it has been reported that combining ethylene oxide-propylene oxide copolymers with LiCF 3 SO 3 Dissolving in acetonitrile for casting, and removing the acetonitrile in an inert gas stream and under ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/21C08L71/02C08J5/18C08K5/13C08K5/34C08K5/524C08L71/00H01B1/06
Inventor 西尾英之大西秀典
Owner ZEON CORP