亚洲精品第一国产综合亚av-色翁荡息又大又硬又粗又爽-成人精品天堂一区二区三区-嫩草研究院久久久精品-国产亚洲美女精品久久久久

 

1,4-Butanediol

Update time:2021/11/05 13:14:11  ???View:  
1,4-Butanediol (abbreviated as BDO) is an important organic and fine chemical raw material, it is widely used in the fields of medicine, chemical industry, textile, papermaking, automobile and daily chemical industry. BDO can produce tetrahydrofuran (THF), polybutylene terephthalate (PBT), gamma-butyrolactone (GBL) and polyurethane resin (PU Resin), coatings and plasticizers, etc., as well as solvents and electroplating Brighteners in the industry, etc.
 
Nature
Colorless viscous oily liquid. It is flammable, with a freezing point of 20.1°C and a refractive index of 1.4461. It is soluble in methanol, ethanol, acetone, and slightly soluble in ether. It is hygroscopic, has a bitter odor, and has a slightly sweet taste in the mouth.
 
Use
1,4 Butanediol is an important organic chemical and fine chemical raw material, and it is the basic raw material for the production of polybutylene terephthalate (PBT) engineering plastics and PBT fibers; PBT plastics are the five most promising ones. One of engineering plastics.
1,4-Butanediol is the main raw material for the production of tetrahydrofuran, which is an important organic solvent. Polytetramethylene glycol ether (PTMEG) obtained after polymerization is the basic raw material for the production of highly elastic spandex (Lycra fiber). Spandex is mainly used to produce high-elastic knitwear such as high-grade sportswear and swimming suits.
The downstream product of 1,4-butanediol, γ-butyrolactone, is the raw material for the production of 2-pyrrolidone and N-methylpyrrolidone products, from which a series of high value-added products such as vinylpyrrolidone and polyvinylpyrrolidone are derived. It is widely used in the fields of pesticides, medicine and cosmetics.
------分隔線----------------------------

Service Hotline:

You only need a phone call, we will serve you attentively

Consult now
Copyright © Shandong Zhengji Chemical Co., Ltd.  All Rights Reserved   Case Number :魯ICP備20007847號-4 chemBlink Premium Supplier
主站蜘蛛池模板: 99久久久无码国产精品古装| 日韩一欧美内射在线观看| 国产精品日韩欧美一区二区三区| 亚洲国产三级在线观看| 亚瑟av亚洲精品一区二区| 亚洲精品国产成人99久久| 最新国产精品精品视频| 欧美黑人又粗又大xxx| 亚洲爆乳少妇无码激情| 老色鬼在线精品视频在线观看| 亚洲国产精品无码中文字满| 成年无码av片在线狼人| 国产特黄级aaaaa片免| 久久综合狠狠综合久久综| 老熟女视频| 黑人30厘米少妇高潮全部进入| 岛国无码| 午夜毛片不卡免费观看视频 | 精品国产免费一区二区三区| 1000部夫妻午夜免费| 亚洲综合图色40p| 亚洲精品久久久久中文字幕二区| 精品国产18久久久久久| 久久无码国产专区精品| 久久精品国产精品亚洲| 久久久久久无码av成人影院| 少妇人妻精品一区二区三区 | 揉捏奶头高潮呻吟视频试看| 亚洲日韩欧美一区、二区| 欧美激情做真爱牲交视频| 亚洲精品国产综合99久久一区| 亚洲午夜无码毛片av久久| 精品无码国产自产拍在线观看| 黑人粗大猛烈进出高潮视频| 亚洲中文字幕a∨在线| 少妇暴力深喉囗交3p| 日韩精品久久无码中文字幕| 国产suv精品一区二区883| 久久久久无码国产精品一区| 观看国产色欲色欲色欲www| 国产精品揄拍100视频|