Polytetramethylene Ether Glycol(PTMEG) for spandex

Under the parent company of Hangzhou Qingyun Holding Co., Ltd. Annual capacity is 20'000t. PTMEG Type 1800

SANLONG PTMEG and SUNRISE SPANDEX are under the same parent company, which is Hangzhou Qingyun Holding Co., Ltd.

Sanlong has an annual capacity of 20000tons.

We have experts from former DUPONT.

Also we are equipped with modern labs for testing.

ABOUTPTMEG (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	1400	1800	2000
Molecular weight	1000±50	1400±50	1800±50	2000±50
Viscosity(40,cP)	180	250	560	600
Refraction Ratio(nD25)	1.463	1.464	1.464	1.464
Molten Point (Tm, )	15	20	23	25
Hydroxide Number (mgKOH/g)	106.6-118.1	60.6-64.1	60.6-64.1	54.7-57.5
Water Content (wt.ppm)	200 max.	200 max.	150 max.	200 max.

End Uses:for the production of polyurethane (polyurethane fibers, polyurethane elastomers, synthesized leathers, paint additives, adhesives and sealants), polyesters and polyamides

Polytetramethylene Ether Glycol(PTMEG) for spandex