ArticleOpen Access http://dx.doi.org/10.26855/nna.2024.12.003
A Brief Discussion on the Control of PTMEG Molecular Weight and Viscosity
Jianchuan Yang, Dongping Yang
Chongqing Jianfeng New Materials Co., Ltd. Chiyuan Chemical Branch, Chongqing 408013, China.
*Corresponding author: Jianchuan Yang
Published: November 29, 2024
Abstract
When the PTMEG unit produces PTMEG products, molecular weight and viscosity are the two most important indicators. Their stability directly affects the operation control and process conditions of downstream products. Controlling product stability and ensuring that the indicators are within the qualified range are the key to PTMEG production. At present, the unit adjusts the molecular weight and viscosity of the product by adjusting the feed ratio of unit 93, and fine-tunes the molecular weight and viscosity of the product by adjusting the temperature of the heat transfer oil of unit 96. From the perspective of reaction principle and product blending, this paper discusses the effects of the concentration of acetic acid and acetic anhydride in unit 93 and the temperature of the heat transfer oil in unit 96 on the molecular weight and viscosity of the PTMEG product, and optimizes the process operation.
Keyword
PTMEG; molecular weight viscosity; manipulation control
References
[1] Yong Xuefeng, Wang Hui, Cheng Wusheng. Mechanism of cationic ring-opening polymerization of tetrahydrofuran catalyzed by acid[J]. Guangzhou Chemical Industry, 2013(5):16-17.
[2] INVISTA PTMEG Operation Manual.
Copyright
© 2024 by the author(s).
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license, which permits non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited and is not modified or adapted.
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How to cite this paper
A Brief Discussion on the Control of PTMEG Molecular Weight and Viscosity
How to cite this paper: Jianchuan Yang, Dongping Yang. (2024). A Brief Discussion on the Control of PTMEG Molecular Weight and Viscosity. Nanomaterials and Nanotechnology Advances, 1(1), 10-14.
DOI: http://dx.doi.org/10.26855/nna.2024.12.003