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Finding the right aliphatic poly-isocyanates - a first orientation - Desmodur®


This overview of our aliphatic poly-isocyanates shows in a simplified way the main characteristics of our major products in this line. It is designed to facilitate a first orientation in our large portfolio of coating raw materials. Depending on the desired properties of the end product and your specific formulation requirements other grades might be more suitable. Please contact our experts if you need help with your formulation.

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Robust in processing, outstandig weather stability and gloss retention, no yellowing, for air- and force-drying automotive, wood, furniture, industrial and plastics coatings, anti-corrosion coatings and chemically resistant coatings robust in processing, outstanding weather stability and gloss retention, no yellowing, for air- and force-drying automotive, wood, furniture, industrial and plastics coatings, anti-corrosion coatings and chemically resistant coatings robust in processing, outstanding weather stability and gloss retention, no yellowing, for air- and force-drying automotive, wood, furniture, industrial and plastics coatings, anti-corrosion coatings and chemically resistant coatings Highly functional crosslinker for fast-drying, weather-stable and non-yellowing 2K-PUR coatings for automotive refinishing, automotive OEM and industriaal applications Highly functional crosslinker for solvent free 2K applications, outstanding weatherstability and gloss retention, non-yellowing Highly functional crosslinker, outstanding weatherstability, gloss and scratch resistance for automotive OEM, refinish, plastics and wood coatings Highly functional crosslinker, outstanding weatherstability, gloss and improved resistance for automotive OEM and plastics, especially for ultra high solid and solvent-free applications, e.g in-mould coating Outstanding weather stability and gloss retention, non yellowing, for automotive OEM, automotive refinish, plastics and industrial coatings, structural coatings and topcoats Outstanding weather stability and gloss retention, non-yellowing, for automotive OEM, automotive refinish, plastics and industrial coatings, structural coatings and topcoats Silane-functional crosslinker for improved metallic substrate adhesion For highly elastic coatings with resistance to accelerated and outdoor weathering For highly elastic coatings and fast tack-free applications e.g. flooring, corrosion protection Flexible, low viscosity crosslinker for weather-stable high-solids and waterborne 2K-PUR coatings Low-viscosity crosslinker for waterborne and solventborne 2K-PUR coatings, also for moisture-curing 1K-PUR systems, for structural coatings and topcoats, not for spray applications Low-viscosity crosslinker for weather-stable and non-yellowing high-solids and waterborne coatings for automotive refinishing, automotive OEM and industrial applications, also for structural coatings and topcoats Outstanding weatherstability, gloss and improves resistance for automotive OEM and plastics, especially for ultra high solid and solvent-free applications, e.g in-mould coating Solvent-free crosslinker for lightfast 2K-PUR systems, as a binder for solvent-free decorative floor coatings, not for spray applications Lowest viscous polyisocyanate, low isocyanate functionality, not for spray applications Low-viscosity crosslinker for lightfast 2K-PUR coatings (high-solids / waterborne) for automotive refinishing, automotive OEM, transportation and plastics finishing applications Crosslinker for weatherstable, fast-drying high solids and waterborne 2K-PUR coatings Fast drying hardener for lightfast 2K-PUR coatings with high restistance to chemicals and weathering. For automotive OEM, refinishing and industrial applications

The most popular grades and their technical data:

Desmodur®
Type
Solid content approx. [%]
(Solvent)
NCO-Content
approx. [%]
Viscosity at 23°C
approx. [mPas]
NCO
Functionality
N 100
HDI Biuret
100
22.0
10,000
N 75
HDI Biuret
75 (MPA/X) 2)
16.5
250
N 3200
HDI Biuret
100
23.0
2,500
N 3300
HDI Trimer
100
21.8
3,000
N 3390
HDI Trimer
90 (BA/SN) 3)
19.6
550
N 3400
HDI Trimer
100
21.8
150
N 3600
HDI Trimer
100
23.0
1,200
N 3790
HDI Trimer
90 (BA)
17.8
1,800
N 3800
HDI Trimer
100
11.0
6,000
N 3900
HDI Trimer
100
23.5
730
NZ 1 1)
HDI / IPDI Dimer / Trimer
100
20.0
3,000
XP 2489
HDI / IPDI Trimer
100
21.0
22,500
XP 2565
IPDI Allophanate
80 (BA)
12.0
2,800
XP 2580
HDI Allophanate
100
19.5
450
XP 2599
HDI Prepolymer
100
6.0
2,500
XP 2675
HDI Trimer
100
20.0
16,000
XP 2679
HDI Allophanate / Trimer
80 (BA)
15.4
500
XP 2714
HDI Allophanate
100
15.9
11,350
XP 2730
HDI Trimer
100
22.7
90
XP 2731
HDI Allophanate / Trimer
100
19.5
35,000
Z 4470
IPDI Trimer
70 (MPA / X) 4)
11.9
1,500

Low functionality 2.0 < F < 2.8
Standard functionality 2.8 < F < 3.6
High functionality F > 3.6

2) availabe in MPA or BA also
3) available in BA also
4) available in BA or SN also

Technical data and application information on all of our poly-isocyanates and prepolymers in this product overview:
Produktbroschüre - Isocyanate und Prepolymere
Polyisocyanates and Prepolymers: Products and Applications

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