
聚酯多元醇 - 百度百科
聚酯多元醇(polyester polyol)包括常规聚酯多元醇、聚己内酯多元醇和聚碳酸酯二醇,它们含酯基或碳酸酯基,但实际上通常所指的聚酯多元醇是由二元羧酸与二元醇等通过缩聚反应得到的聚酯多元醇。 聚酯多元醇是聚酯型聚氨酯的主要原料之一,根据是否含苯环,可分为脂肪族多元醇和芳香族多元醇。 其中脂肪族多元醇以己二酸系聚酯二醇为主。
Polyol - Wikipedia
In organic chemistry, a polyol is an organic compound containing multiple hydroxyl groups (−OH). The term "polyol" can have slightly different meanings depending on whether it is used in food science or polymer chemistry. Polyols containing two, three and four hydroxyl groups are diols, [1] triols, [2] and tetrols, [3][4] respectively.
Polyols - BASF
BASF offers various CASE polyols with molar weights in the range of 450 to 4000 g/mol. CASE polyols with a low molecular weight are produced by KOH catalysis.
Polyol pathway - Wikipedia
The polyol pathway is a two-step process that converts glucose to fructose. [1] . In this pathway glucose is reduced to sorbitol, which is subsequently oxidized to fructose. It is also called the sorbitol-aldose reductase pathway.
聚酯多元醇 | 事业・产品 | 迪爱生 DIC Corporation
作为开发涂料用、粘合用、弹性体用等聚氨酯树脂用途的基础技术支持,拥有多年的应用实绩。 聚氨酯原料用聚酯多元醇是对多元醇催化活性进行控制的高品质多元醇。 5分钟了解DIC! COPYRIGHT © DIC CORPORATION ALL RIGHTS RESERVED. 是DIC「聚酯多元醇」的网页。 作为开发涂料用、粘合用、弹性体用等聚氨酯树脂用途的基础技术支持,拥有多年的应用实绩。 聚氨酯原料用聚酯多元醇是对多元醇催化活性进行控制的高品质多元醇。
Polyol - an overview | ScienceDirect Topics
In order to build high-MW polyols from hydroformylated fatty acids, Peerman and Rogier156 developed a novel method of polymerizing hydroxymethyl-containing alkyl esters of fatty acids onto polyol, polyamine, or amino alcohol initiators (Figure 25). This resulted in previously unseen high-MW, nongelling polyols from natural oils.
Synthesis and process development of polyether polyol with
2015年8月26日 · We have developed a novel class of propylene oxide-based polyether polyol (PPG) with up to 70% higher primary hydroxyl content, which is produced through a Lewis acid-mediated propoxylation...
值否|短鼻坐垫的颜值担当,Prologo Dimension超详细体验|评测
2020年3月18日 · Prologo的开槽被称为PAS系统 (perineal area system),使用人体工程学开槽设计配合可变密度的填充物以减少会阴区的压迫,提升舒适度。 (美骑版权所有,请勿转载。
求教,prologo dimension坐垫ndr和普通版区别 - 百度贴吧
求教,prologo..求教,prologo dimension坐垫ndr和普通版有什么区别吗?除了填充物其它方面有区别吗?我体重很大,哪个合适些买了NDR版本
Polyol Definition and Examples - Biology Online Dictionary
2021年6月28日 · A polyol is an alcohol characterized by the presence of three or more hydroxyl groups (thus, the name). The term “poly” means multiple and – “ol” refers to alcohol. Polyols are organic compounds. An organic compound is a compound that, in general, contains carbon covalently bound to other atoms, especially Carbon-Carbon and Carbon-Hydrogen.