PTMEG

Our company's PTMEG product have a creative impact and significance to the development of chemical industry in China.

PropertyPTMEG (polytetramethylene ether glycol) is a white waxy solid. It turns into transparent liquid when the temperature is higher than room temperature. It dissolves easily in alcohols, esters, ketones, aromatic hydrocarbons and hydrocarbon chlorides. However, it does not dissolve in water or fatty hydrocarbons. When its molecular weight increases, its solubility drops. At room temperature, PTMEG is a good absorbent of water up to its molecular weight or maximum up to 2%. Specification

 

Product	1000	1800	2000
Molecular weight	1000±50	1800±50	2000±50
Viscosity(40,cP)	270	1215	1225
Refraction Ratio(nD25)	1.463	1.464	1.464
Molten Point (Tm, )	24	28	32
Hydroxide Number (mgKOH/g)	106.6-118.1	60.6-64.1	54.7-57.5
Water Content (wt.ppm)	200 max.	150 max.	200 max.
Chroma (APHA)	40
Acidity Value (mgKOH/g)	0.05
Peroxides (wt.ppm as H2O2)	2
Volatility (wt.ppm)	0.1
Stability (wt.ppm as BHT)	250±50
Flash Point (Open Cup)	≥260
Metals (wt.ppm as Fe)	1 max.

 Uses of ProductsPTMEG is an important raw material for the production of polyurethane (polyurethane fibers, polyurethane elastomers, synthesized leathers, paint additives, adhesives and sealants), polyesters and polyamides  

PTMEG