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Product Introduction
PCDL is a polycarbonate diol ring-opened with polyol, which is professionally used in the high-end polyurethane industry.
Compared with general polyester and polyether diols, PCDL shows quite excellent mechanical properties, hydrolysis resistance, weather resistance and solvent resistance. It is widely used in synthetic leather, thermoplastic polyurethane elastomer (TPU), elastic fibers, adhesives, coatings, etc. If there is a special 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 adipate and polycaprolactone polyol, in terms of heat resistance, weather resistance, water resistance and The solvent performance is better than other polyols, but the elongation at break is lower.

UH Series

Product number	Molecular weight	hydroxyl value mgKOH/g	acid value mgKOH/g	Melting point °C	Normal temperature status
UH-50	500	224±20	<0.1	33±5	Solid
UH-100	1000	110±10	<0.1	45±5	Solid
UH-200	2000	56±5	<0.1	50±3	Solid
UH-300	3000	37±3	<0.1	52±3	Solid

PH Series

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Product number	<0.1	—	Highly viscous liquid
UM-90(1/3)	900	125±10	<0.1	—	Highly viscous liquid

UP Series

Product number	Molecular weight	hydroxyl value mgKOH/g	acid value mgKOH/g	Melting point °C	Normal temperature status
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 from various polyols :

Project	PTMG	PHA	PCL	PCDL
Heat resistance	Poor	Good	Good	Excellent
Water resistance	Good	Poor	General	Excellent
Oil and acid resistance	Poor	General	Poor ~ Average	Good
Weather resistance	Poor	Good	Good	Excellent

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Good

Good

Excellent

Water resistance

Good

Poor

General

Excellent

Oil and acid resistance

Poor

General

Poor ~ Average

Good

Weather resistance

Poor

Good

Good

Excellent