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Chemicals

Diol

A raw material for polyurethanes that improves strength and flexibility.
General Name
MPD (3-Methyl-1.5-Pentanediol), ND (1,9-Nonanediol)

Overview

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 (1,9-Nonanediol) is a diol with a straight chain alkyl group. The melting point is relatively high thanks to the log chain, but a viscosity of 60oC is the same as acetone.

  • MPD
    • Polyurethanes (polyols, chain extenders)
    • Solvents
    • Acrylate Monomer
  • ND
    • Polyurethanes (polyols, chain extenders)
    • Polyester
    • UV monomer, oligomer
    • Acrylate Monomer

Diols are a group of chemical compounds important in developing various industrial materials. They are characterised by having two hydroxyl groups, which make them versatile intermediates in polymer synthesis. Here are two specific diols—3-methyl-1,5-pentanediol (MPD) and 1,9-nonanediol (ND) each with unique properties.

3-Methyl-1,5-pentanediol (MPD)
A colourless liquid that is easy to handle due to its low viscosity and is resistant to water damage. MPD is flexible and transparent, making it a key component in the manufacturing of durable polyurethanes.

1,9-Nonanediol (ND)
This white solid substance is notable for its hydrolysis resistance and a suitable level of crystallinity. ND is used to several type of chemical susbstances for the applicability in agro, indsutrial intermediates, etc.

  • Resistance to Hydrolysis: Diols offer excellent resistance to hydrolysis, ensuring that they maintain their integrity and performance even when exposed to water. The resistance is crucial for the longevity and durability of materials that operate in moist or wet environments.
  • Low Viscosity in Liquid State: The diols are easy to handle because they flow easily at room temperature. It makes them convenient to work with in manufacturing processes.
  • Wide Compatibility: These diols are highly compatible with a range of other polyols, including both polyester and polyether types. This compatibility is essential for formulating complex polymers that meet specific performance criteria for various industrial applications.
  • Better Softness: The MPD diol imparts superior softness to polymers, making it an ideal component for products that require a comfortable feel, such as synthetic fabrics, and for flexible coatings that can withstand bending and flexing without cracking.

Product NameCAS No.Boiling Point (oC)Flash PointDensityMITI(JAPAN)TSCAEC No.EU-REACHUN No.PackageApplication
MPD (3-Methyl-1,5-pentanediol)4457-71-0249143 (OC)0.972-240Listed224-709-1 RegisteredCN:17kg,    DM:190Kg,         ISO containerRaw material for PU
ND (1,9­-Nonanediol)3937-56-2166162 (OC)0.912-240Listed223-517-5 RegisteredCN:15kg,    DM:175KgRaw material for PU

MPD based polyols

Polyol TypeGradeCompositionM.W.Appearance
PolyesterP-**10
P-**11
P-**20
P-**50
F-**10
MPD adipate
MPD adipate/ terephthalate
MPD Terephthalate
MPD sebacate
3 functional type
500-6000
2000
500-2000
2000
500-3000
Liquid
Wax
Liquid
Liquid
Liquid
PolycarbonateC-**50
C-**90
MPD/ HD 5:5 carbonate
MPD/ HD 9:1 carbonate
2000
500-3000
Liquid
Liquid

Further information about Diol

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