Teal and black steel drums of polycaprolactone polyol stacked in a store

Polycaprolactone Polyol PCL

Name: Polycaprolactone Polyol PCL
Brand: KingZhi Chemistry

Diols triols tetrols and modified grades from 300 to 10000 molecular weight

Overview

What This Product Is and Who Buys It

Polycaprolactone polyols carry multiple hydroxyl groups and serve as the soft segment in polyurethanes, coatings, adhesives, elastomers and synthetic resins. Thirty four grades are listed here with molecular weight, appearance, acid value, water content, hydroxyl value and melting point.

Key Benefits

Low acid value and low moisture content, with ultra low acid value grades down to 0.05 mgKOH/g
Controlled molecular weight distribution, with narrow distribution grades available
Excellent processing properties across the range
Available in liquid, paste, waxy solid and granular forms

Polyol drums held in covered storage ahead of despatch

Applications

Where This Material Is Used

Polyurethane coatingsPolyurethane elastomersPolyurethane adhesivesSynthetic leather TPU and casting systems

Who It Is For

Cast elastomer and roller producers
TPU and synthetic leather manufacturers
Polyurethane coating and adhesive formulators
Casting and potting system developers

Problems It Solves

Hydrolysis shortening the service life of parts used in warm humid conditions
Batch to batch mechanical property spread caused by wide molecular weight distribution
Crystallinity in the drum making dosing unpredictable

Technical

Technical Features

200 series diols from 205 at 530 molecular weight to H1P at 10000
300 series triols from 303 at 300 to 320 at 2000 molecular weight
400 series tetrol 410 at 1000 molecular weight
L series modified liquid polyols L205AL, L212AL, L220AL and L320AL

Specifications

These figures are the manufacturer grade data as published for this product family. Anything not listed below has not been confirmed and is marked TBC on request rather than estimated.

Series	Grade	Molecular Weight	Features	Appearance	Acid Value (mgKOH/g)	Water (%)	OH Value (mgKOH/g)	Melting Point (°C)
200 Series Diols	205	530	—	Paste	≤1.0	≤0.05	207–217	N/A
	205H	530	Hydrolysis resistant	Liquid	≤1.0	≤0.05	207–217	N/A
	205U	530	Low acid value, low viscosity	Liquid	≤0.5	≤0.05	207–217	N/A
	208	830	—	Waxy solid	≤1.0	≤0.05	130–140	35–45
	210	1000	—	Waxy solid	≤1.0	≤0.10	109–119	46–48
	210B	1000	Narrow MW distribution	Waxy solid	≤0.5	≤0.05	107–113	N/A
	210CP	1000	Low acid value	Paste	≤0.5	≤0.03	107–117	31–33
	210N	1000	Narrow MW distribution	Waxy solid	≤1.0	≤0.05	107–117	32–37
	212	1250	—	Waxy solid	≤1.0	≤0.05	86–94	40–52
	212CP	1250	Low acid value	Waxy solid	≤0.4	≤0.02	89–91	37–40
	220	2000	—	Waxy solid	≤1.0	≤0.05	53–59	45–55
	220CPB	2000	Low acid value	Waxy solid	≤0.5	≤0.05	53–59	40–50
	220CPT	2000	Ultra-low acid value	Waxy solid	≤0.05	≤0.02	53–59	N/A
	220EB	2000	Hydrolysis resistant	Liquid	≤1.0	≤0.05	53–59	N/A
	220N	2000	Narrow MW distribution	Waxy solid	≤1.0	≤0.05	53–59	48–51
	220NP1	2000	Low crystallinity	Waxy solid	≤1.0	≤0.05	53–59	33–44
	220UA	2000	—	Waxy solid	≤1.0	≤0.05	53–59	N/A
	230	3000	—	Waxy solid	≤1.0	≤0.05	36–39	55–58
	230CP	3000	—	Waxy solid	≤1.0	≤0.30	34–41	55–58
	230N	3000	Narrow MW distribution	Waxy solid	≤1.0	≤0.05	36–39	52–54
	240	4000	—	Waxy solid	≤1.0	≤0.05	26–31	48–58
	240CP	4000	—	Waxy solid	≤1.0	≤0.30	24–32	57–60
	H1P	10000	—	Granules	≤3.0	N/A	9–16	60
300 Series Triols	303	300	—	Liquid	≤1.5	≤0.05	530–550	N/A
	305	550	—	Liquid	≤1.0	≤0.05	300–310	N/A
	308	850	—	Liquid	≤1.5	≤0.05	190–200	20–30
	309	950	—	Liquid	≤1.0	≤0.05	182–192	N/A
	312	1250	—	Waxy solid	≤1.0	≤0.05	130–140	33–37
	320	2000	—	Waxy solid	≤1.0	≤0.05	81–87	40–45
400 Series Tetrols	410	1000	—	Liquid	≤1.0	≤0.05	216–232	N/A
L Series Modified Polyols	L205AL	500	—	Liquid	≤1.0	≤0.05	219–229	N/A
	L212AL	1250	Excellent solubility stability	Liquid	≤1.0	≤0.10	87–93	N/A
	L220AL	2000	Excellent elastic recovery	Liquid	≤1.0	≤0.05	53–59	N/A
	L320AL	2000	—	Liquid	≤1.0	≤0.10	79–89	N/A

Grades listed are representative and not exhaustive. Ask for the batch certificate of analysis on the grade you intend to buy.

Handling

Packaging Storage and Shelf Life

Physical Forms: Liquid, paste, waxy solid and granular
Melting Points: Listed per grade, from around 20 to 60°C on solid grades
Storage: Sealed containers, dry conditions; water content specifications are tight so moisture ingress matters
Packaging: Contact us for the drum format available on the grade you select

Use Guide

How to Work With This Product

Select molecular weight first, since it sets soft segment flexibility
Use the hydroxyl value to calculate isocyanate stoichiometry
Where the part will see warm humid service, specify a low acid value or hydrolysis resistant grade
Check the melting point before ordering, because waxy solid and granular grades need melting equipment
For tight batch to batch consistency choose a narrow distribution grade such as 210B, 210N, 220N or 230N

Comparison

How It Compares

Within the Polyether Polyol category this product is positioned by the numbers in the table above rather than by a marketing claim. Compare NCO content, viscosity, equivalent weight or hydroxyl value against the alternative you are considering, and if the two are close, ask us for both samples and decide on your own line.

Quality and Documentation

Quality control runs across incoming raw materials, production and finished product inspection. A batch certificate of analysis is supplied with every shipment. We are a supply and trading company working with named manufacturers and OEM partners, so certification held by the producing plant is provided on request per grade rather than claimed here as ours.

Customisation

Customised grades and packing formats are available through our OEM partners and specialised manufacturing facilities. Tell us the property you need to move and we will say whether it is a grade change, a packaging change or not possible.

Industries

Industries Using This Product

Bedroom interior with cushions and textiles finished using polyurethane systems

IndustryFurniture Bedding and Textiles

Comfort products are judged by how they feel after three years, not on the day they ship. That is a raw material question about foam resilience and coating durability.

See Applications

Solutions

Where This Product Fits In A Wider System

Teal and black polyol drums stacked in a chemical storage area

SolutionPolyurethane Elastomer and TPU Systems

Cast elastomers, rollers and TPU all come down to three components: the isocyanate, the polyol soft segment and the chain extender.

See The Process

FAQ

PCL Polyol Questions

Which is the general purpose grade?

PCL 220 at 2000 molecular weight, 53 to 59 mgKOH/g hydroxyl value, acid value 1.0 maximum and a melting point of 45 to 55 degrees C. It is supplied as a waxy solid.

Which grades are hydrolysis resistant?

205H at 530 molecular weight and 220EB at 2000 are both listed as hydrolysis resistant liquid grades.

What is the lowest acid value available?

220CPT at 2000 molecular weight, with acid value 0.05 mgKOH/g maximum and water content 0.02 percent maximum.

Do you have liquid grades at 2000 molecular weight?

Yes. 220EB is a hydrolysis resistant liquid, and the L series grades L220AL and L320AL are liquid at 2000 molecular weight with good elastic recovery and solubility stability.

What is H1P used for?

H1P is the 10000 molecular weight grade supplied as granules, with hydroxyl value 9 to 16 mgKOH/g and a melting point around 60 degrees C, at the most flexible end of the range.