Polycarbonate diol PCDL

Asahi Kasei PCDL Polycarbonate Diol Series T6002 T5650E 5652 G3450J…

Features

Compared with general polyester and polyether-based diols, it exhibits quite excellent mechanical properties, hydrolysis resistance, thermal stability, weather resistance and solvent resistance.

application

Artificial leather, synthetic leather, TPU, spandex, adhesives, coatings, etc. In all of the above products, PCD will be the best choice if there is a special need to improve durability. The following comparison table:

project	Asahi Kasei PCDL	Ordinary PCDL	PTMG	PHA
heat resistance	excellent	excellent	poor	good
Weather resistance	excellent	excellent	poor	good
softness	good	poor	excellent	good
water resistance	excellent	excellent	good	poor
Bacterial resistance	good	good	excellent	poor
Acid resistance	good	good	poor	good
Alcohol resistance	good	good	poor	good

Note: PHA: 1,6 hexanediol-adipic acid polyester PTMG: polytetrahydrofuran ether

Specifications

project	T6002	T6001	T5652	T5651	T5650J	T5650E
molecular weight	2000	1000	2000	1000	800	500
Exterior	white solid	white solid	viscous liquid	viscous liquid	viscous liquid	viscous liquid
Hydroxyl value (KOHmg/g)	51～61	100～120	51～61	100～120	130～150	200～250
Acid value (KOHmg/g)	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05
moisture	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05
Viscosity (mPa s @50℃)	6000～15000	1100～2300	7000～16000	1200～2400	600～1200	200～430
Hue APHA	<100	<100	<100	<100

project	T4672	T4671	T4692	T4691	G3450J	G3452
molecular weight	2000	1000	2000	1000	800	2000
Exterior	viscous liquid	viscous liquid	white solid	white solid	viscous liquid	viscous liquid
Hydroxyl Value (KOHmg/g)	45～56	100～120	51～61	100～120	130～150	51～61
Acid value (KOHmg/g)	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05
moisture	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05	<=0.05