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GENERAL PRODUCT DESCRIPTION
CAPA® 2161A is a premium grade linear polyester diol derived from caprolactone, terminated by primary hydroxyl groups. It has a molecular weight of 1600 and a typical OH value of 70 mg KOH/g.
The product has been specially developed as an intermediate for the production of high quality polyurethane elastomers, where outstanding resistance to hydrolysis is required. It is also recommended for the production of high quality polyurethane coatings and fibres.
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TYPICAL PROPERTIES
| Physical Form |
White waxy solid
|
| Mean Molecular Weight |
1600
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| Melting Point |
35°C-50°C
|
| Hydroxyl Value |
70 mg KOH/g
|
| Acid Value |
<0.05mg KOH/g
|
| Water Content |
<0.02%
|
| Viscosity at 60°C |
300 mPa.s
|
DENSITIES
The typical specific gravity (SG) of the material, measured as 55oC c.f. water at 20oC, is 1.071.
SOLUBILITY PARAMETERS
The solubility parameter (δ) is 9.34 - 9.43 (cal/cm3)½.
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