RECYCLED MONOMER, RECYCLED MONOMER PRODUCTION METHOD, AND RECYCLED MONOMER PRODUCTION DEVICE

WIPO Patent Application WO/2024/004774

A1

The purpose of a recycled monomer and a production method therefor according to the present invention is to provide a method that can, while utilizing the advantage of high-temperature high-pressure water, suppress hyperreaction of a product obtained through depolymerization and produce, at a high yield, a recycled monomer of a dicarboxylic acid, a diol, or the like.　In order to achieve said purpose, in a preferable aspect of this recycled monomer production method, a polymer is a thermoplastic polyester (A), and when the melting point of the thermoplastic polyester (A) as measured using a differential scanning calorimeter is defined as Mp°C, the reaction temperature is defined as X°C, the reaction time is defined as Y minutes, and the mass ratio of water and the thermoplastic polyester (A) is defined as Z:1, X and a product X·Y·Z of X, Y, and Z simultaneously satisfy the following (I) and (II).　(I): Mp≤X<300 (II): 2000≤X·Y·Z≤20000

JPH09504808	[Title of Invention] Processing of Polyester
WO/2004/064487	ULTRASOUND ASSISTED PROCESS FOR INCREASING THE CRYSTALLINITY OF SLOW CRYSTALLIZABLE POLYMERS
JPH10249925	LACTATE POLYMER CONTAINER AND ITS MANUFACTURE

NISHIMURA MIHOKO (JP)
YAMASHITA KOHEI (JP)
NAGAHARA TAKASHI (JP)
YOSHIDOMI SHINICHIRO (JP)
YOSHIKAWA TAKAHIRO (JP)
KATO KOYA (JP)
UTAZAKI KENICHI (JP)

PCT/JP2023/022870

January 04, 2024

June 21, 2023

Click for automatic bibliography generation  

TORAY INDUSTRIES (JP)

C08G63/88; C07B61/00; C07C27/02; C07C29/09; C07C31/20; C07C51/09; C07C63/26; C08G63/16; C08G63/183; C08J11/14; C08J11/16; C08K3/22; C08K3/26; C08L67/02

JPH0977905A	1997-03-25
JP2021130766A	2021-09-09

View/Download PDF      PDF Help

Previous Patent: FILM FOR BACK FACE PLATE AND POLYESTER FILM, AND IMAGE DISPLAY APPARATUS AND DEVICE WITH FILM FOR BA...

Next Patent: CAN CONTAINER