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Technical Information

All test data and values shown in this website are based on typical laboratory tests by the indicated test methods, presented for basic reference only and not as any specification or warranty, and subject to change without notice.

Polyurethane properties of polyols

The table below shows qualitative comparison of the impact of polyols on polyurethane. Although PCD offers excellent durability, hydrolysis resistance, and chemical resistance when compared to other polyols, its flexibility is inferior to that of the polyols.
Our PCD, DURANOL™ maintains the features of PCD as described above and offers improved flexibility.

Items/Polyol DURANOL™
C5C6 Copolymer
PCD
C6 Homopolymer
PCL PHA PTMG
Heat stability Excellent Excellent Good Good Poor
weatherability Excellent Excellent Good Good Poor
Softness Good Poor Good Good Excellent
Hydrolysis resistance Excellent Excellent Fair Poor Good
Fungus resistance Fair or Good Fair or Good Poor Poor Excellent
Oleic acid resistance Good Good Poor or Fair Fair Poor
Ethanol resistance Good Good Poor Fair Poor

C5C6 Copolymer:DURANOL™ T5652
PCD:Polycarbonatediol
PHA:Poly1,6-hexamethylene adipate(Polyester polyol)
PCL:Polycaprolactone polyol(Polyester polyol)
PTMG:Polytetramethylene glycol(Polyether polyol)
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Compatibility of DURANOL™ and solvents

Liquid type DURANOL™ (T5652•G4672 and G3452) offers excellent handling property and solvent solubility.
Solubility[wt%] (at 25℃)

  Liquid Solid
solvent/grade T5652 G4672 G3452 T6002 T4692
Toluen 85 85 80 30 8
DMF 85 85 80 20 20
Ethyl acetate 80 80 80 30 10
Acetone 80 80 75 30 20
MEK 90 85 75 40 10
N-octane <1 <1 <1 <1 <1
Methanol <1 <1 <1 <1 <1
Iso-propanol <1 <1 <1 <1 <1

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Compatibility of DURANOL™ and other polyols

Generally, DURANOL™ has a good compatibility with polyester polyols.
In the case of acrylic polyols, the compatibility depends on their types.

Polyol PCD Polyol:PCD
9 : 1 7 : 3 5 : 5 3 : 7 1 : 9
Polybutylene adipate
(Polyester polyol)
T5650J good good good good good
T5652 good good good good good
G4672 good good good good good
G3452 good good good good good
T4692 good good good good good
Acrylic polyol T5650J good good goodfair fair fair
T5652 fair poor poor poor fairpoor
G4672 fair poor poor poor fairpoor
Polytetramethylene glycol
(Polyether polyol)
T5650J goodfair poor poor poor good
T5652 poor poor poor poor fair
G4672 fairpoor poor poor poor fair
[Judgment] good: Transparent, fair: Uniform but with turbidity, poor: Separation (Temperature: 60±3°C)

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Temperature dependence of the viscosity of DURANOL™

T6002•T6001T6002•T6001 Temperature dependence of the viscosity of DURANOL™
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T5652•T5651•T5650JT5652•T5651•T5650J Temperature dependence of the viscosity of DURANOL™
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T4672•T4671T4672•T4671 Temperature dependence of the viscosity of DURANOL™
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G3452•G3450JG3452•G3450J Temperature dependence of the viscosity of DURANOL™
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[Viscometric measurement] Type B viscometer: HM2
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Flexibility of DURANOL™

Generally, although PCD polyurethane tends to lack flexibility, use of liquid type DURANOL™ allows improvement of flexibility.

(Tensile test of polyurethane)
Flexibility of DURANOL™
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[Measurement condition]
Polyurethane formulation: MDI / Polyol / 1, 4 - BDO = 2 / 1 / 1
Condition: According to JIS K7311
Test piece: 2 mm × 60 mm strip
Measuring instrument: TENSILON tensile testing machine

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Hydrolysis resistance of DURANOL™

It can be seen that PCD polyurethanes are hard to decompose when compared to polyether urethanes and polyester urethanes.

(Change in the molecular weight of a polyurethane film immersed in hot water at a temperature of 100°C)
Change in the molecular weight of a polyurethane film immersed in hot water at a temperature of 100°C
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[Polyurethane formulation] MDI/Polyol/1,4-BDO=2/1/1
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Heat resistance of DURANOL™

PCD polyurethanes show high strength retention even after storage at a high temperature.

(Change in the property of a polyurethane film stored at 120°C)
Change in the property of a polyurethane film stored at 120°C
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[Polyurethane formulation] H12MDI/Polyol/IPDA=2/1/1
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Chemical resistance of DURANOL™

It can be seen that PCD polyurethanes have a smaller swelling rate due to organic solvent when compared to polyether urethanes and polyester urethanes and copolymerized type DURANOL™ has an excellent swelling rate in particular.

(Change in the property of a polyurethane film immersed in oleic acid (23°C) for 1 week)
Change in the property of a polyurethane film immersed in oleic acid (23°C) for 1 week
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[Polyurethane formulation] MDI/Polyol/1,4-BDO=2/1/1
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Abrasion resistance of DURANOL™

PCD two-component polyurethane paint offers excellent Abrasion resistance of the paint film.

(Abrasion resistance of two-component polyurethane paint)
PCD two-component polyurethane paint offers excellent Abrasion resistance of the paint film.
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[Measurement condition]
Coating formulation : Polyol/DURANATE™[TPA-100]/Solvent/DBTDL
Cured at 80°C×2hr
Taber abrasion test : 500g, 500 times grinding


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旭化成 アルミペーストAsahi KASEI DURANATE™Asahi KASEI SB latex

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