Polycarbonate diol PCDL

Japan UBE PCDL Polycarbonate Diol UH PH BH UHC UM UC UP Each Series Model Index

Product introduction
PCDL is a polycarbonate diol ring-opened with a polyol, which is specially used in the high-grade polyurethane industry.
Compared with general polyester and polyether diols, PCDL exhibits excellent mechanical properties, hydrolysis resistance, weather resistance and solvent resistance. Widely used in synthetic leather, thermoplastic polyurethane elastomer (TPU), elastic fibers, adhesives, coatings, etc. If you need to improve durability, PCDL will be the best choice.
The breaking strength of polyurethane products made of PCDL is higher than that of polyurethane products made of polytetrahydrofuran ether, hexylene glycol adipate and polycaprolactone polyol, in terms of heat resistance, weather resistance, water resistance and resistance. Solvent performance is better than other polyols, but the elongation at break is lower.

UH series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Melting point °C	normal temperature
UH-50	500	224±20	<0.1	33±5	solid state
UH-100	1000	110±10	<0.1	45±5	solid state
UH-200	2000	56±5	<0.1	50±3	solid state
UH-300	3000	37±3	<0.1	52±3	solid state

PH series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Viscosity (cP/75°C)	normal temperature
PH-50	500	224±20	<0.1	65-120	viscous liquid
PH-100	1000	110±10	<0.1	400-630	viscous liquid
PH-200	2000	56±5	<0.1	2200-2800	viscous liquid
PH-300	3000	37±3	<0.1	6500-9800	viscous liquid

BH series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Viscosity (cP/75°C)	normal temperature
BH-100	1000	110±10	<0.1	500-750	viscous liquid
BH-200	2000	56±5	<0.1	3400-5600	solid state

UHC series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Melting point °C	normal temperature
UHC-50-100	1000	110±10	<0.1	10±5	viscous liquid
UHC-50-200	2000	56±5	<0.1	15±5	viscous liquid

UC&UM series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Melting point °C	normal temperature
UC	1000	110±10	<0.1	54±5	solid state
UM-90(3/1)	900	125±10	<0.1	—	Highly viscous liquid
UM-90(1/1)	900	125±10	<0.1	—	Highly viscous liquid
UM-90(1/3)	900	125±10	<0.1	—	Highly viscous liquid

UP series

Product grade	molecular weight	Hydroxyl value mgKOH/g	Acid value mgKOH/g	Melting point °C	normal temperature
UP-50	500	224±20	<0.1	—	Highly viscous liquid
UP-100	1000	110±10	<0.1	—	Highly viscous liquid
UP-200	2000	56±5	<0.1	—	Highly viscous liquid

Comparison of basic properties of polyurethanes made with various polyols :

project	PTMG	PHA	PCL	PCDL
heat resistance	bad	good	good	perfect
water resistance	good	bad	medium	perfect
oleic acid resistance	bad	medium	bad ~ medium	good
Weather resistance	bad	good	good	perfect