Diols Diols (MPD & ND)

MPD
CAS No. 4457-71-0

MPD (3-Methyl-1,5-pentanediol) is a diol which is an isomer of 1,6-hexanediol. MPD is amorphous, giving excellent properties to polyurethanes.: outstanding softness, high transparency and compatibility, owing to the methyl branch in the middle of its structure.

ND
CAS No. 3937-56-2

ND (1,9-nonanediol) is a C9 diol with a straight-chain alkyl group. Due to its long chain length, it has a relatively high melting point, but its viscosity drops sharply when the temperature reaches around 60°C.

Features

Applications

Document Downloads

Features

MPD

Softness
Kuraray Polyol inhibits cohesion. This allows for increased operating efficiency.

Hydrolysis resistance
Hydrolysis resistance is good; MPD can inhibit the hydrolysis resistance of polyurethanes.

ND

Appropriate crystallinity
By moderately disrupting orientation (crystallinity), it imparts strength and flexibility to polyurethane.

Left：MPD at room temp.
Right：ND heating at 60°C

Hydrolysis resistance (MPD)

The hydrolysis resistance of PU resin from MPD-based polyester polyol is high even MPD portion is small as an ingredient of polyester polyol.

Appropriate crystallinity (ND)

Compared to diols with even carbon numbers, molecular chains are less likely to be oriented, and crystallinity is appropriately suppressed, resulting in a lower melting point. The moderate crystallinity gives the resin strength and flexibility and improves transparency.

Applications

MPD

Polyurethanes (polyols, chain extenders)
Solvents
Acrylate Monomer

ND

Polyurethanes (polyols, chain extenders)
Polyester
UV monomer, oligomer
Acrylate Monomer

Product Brochures

Please click here to download the Brochures.

Donwload

Product Inquiries

For any inquiries or consultations regarding our products, please feel free to contact us here.