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Desmodur N 3600
Characterization Aliphatic polyisocyanate (low-viscosity HDI trimer).
Use as the hardener component for flexible, lightfast polyurethane coating
systems.
Specification
Property Value Unit of measurement Method
NCO content 23.0 ± 0.5 % M105-ISO 11909
Viscosity at 23 °C 1,200 ± 300 mPa·s M014-ISO 3219/A.3
Color value (Hazen) ≤ 40 M017-EN 1557
Monomeric HDI ≤ 0.25 % M106-ISO 10283
Other data*
Property Value Unit of measurement Method
Viscosity at 25 °C approx. 1,100 mPa·s M014-ISO 3219/A.3
Equivalent weight approx. 183
Flash point approx. 158 °C DIN 53 213/1
Density at 20 °C approx. 1.16 g/ml DIN EN ISO 2811
*These values provide general information and are not part of the product specification.
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Edition 2018-05-25
Replaces edition dated 2018-04-13 Product Datasheet
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Desmodur N 3600
Solubility / thinnability ®
Desmodur N 3600 can be thinned with esters, ketones and aromatic
hydrocarbons such as ethyl acetate, butyl acetate, methoxypropylacetate,
acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene,
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xylene, solvent naphtha 100 and mixtures thereof.
Generally speaking, it has good compatibility with the solvents listed. However,
the solutions formed must be tested for their storage stability. Only PU grade
solvents should be used (max. 0.05 % water, absence of reactive groups
such as hydroxyl or amino groups). Aliphatic hydrocarbons are unsuitable as
solvents.
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Desmodur N 3600 should not be thinned to below a solids content of 40 %.
Prolonged storage of a solution with a lower binder content may result in
turbidity and sedimentation.
Compatibility Generally speaking, Desmodur
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N 3600 can be mixed with the following
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products: Aliphatic polyisocyanates such as Desmodur N 100, N 75, N 3200,
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ultra N 3300, N 3400 and Desmodur Z 4470; aromatic polyisocyanates
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such as Desmodur L/ultra L, HL and IL/ultra IL; polyester polyols such
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as Desmophen 670 and polyacrylates. However, the compatibility of the
combinations used should always be tested.
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Desmodur N 3600 is not compatible with branched polyester polyols such as
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Desmophen 651 or polyether polyols such as Desmophen 1380 BT.
Properties / Applications ®
Desmodur N 3600 is used primarily as the hardener component for lightfast
two-component polyurethane coatings with high resistance to chemicals and
weathering, very good gloss retention and outstanding mechanical properties.
Preferred co-reactants are polyacrylate or polyester polyols.
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The main applications for systems based on Desmodur N 3600 are
air- and force-drying coatings for automotive OEM, automotive refinishing,
transportation, industrial finishing and plastics.
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On account of its low viscosity, Desmodur N 3600 is particularly suitable for
the formulation of high-solids coatings and can also be used as the hardener
for aqueous two-component polyurethane coatings.
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Edition 2018-05-25
Replaces edition dated 2018-04-13 Product Datasheet
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Desmodur N 3600
Storage - Storage in original sealed Covestro container.
- Recommended storage temperature: 0 - 30 °C.
- Protect from moisture, heat and foreign material.
General information: The product is sensitive to moisture. Storage at higher
temperatures will result in increase of color and viscosity. Storage at significant
lower temperatures will result in solidification. This solidification is reversible
by briefly heating the product without adversely affecting the quality of the
product.
Storage time Covestro represents that, for a period of nine months following the day
of shipment as stated in the respective transport documents, the product
will meet the specifications or values set forth in section "specifications or
characteristic data" above, what ever is applicable, provided that the product is
stored in full compliance with the storage conditions set forth in and referenced
under section "storage" above and is otherwise handled appropriately.
The lapse of the nine months period does not necessarily mean that the
product no longer meets specifications or the set values. However, prior to
using said product, Covestro recommends to test such a product if it still
meets the specifications or the set values. Covestro does not make any
representation regarding the product after the lapse of the nine months period
and Covestro shall not be responsible or liable in any way for the product failing
to meet specifications or the set values after the lapse of the nine months
period.
page 3 of 4
Edition 2018-05-25
Replaces edition dated 2018-04-13 Product Datasheet
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Desmodur N 3600
Labeling and statutory requirements This product data sheet is only valid in conjunction with the latest edition of the
corresponding Safety Data Sheet. Any updating of safety-relevant information
– in accordance with statutory requirements – will only be reflected in the Safety
Data Sheet, copies of which will be revised and distributed. Information relating
to the current classification and labeling, applications and processing methods
and further data relevant to safety can be found in the currently valid Safety
Data Sheet.
Further information The product is used mainly as a hardener in coating materials or
adhesives. The handling of coating materials or adhesives containing reactive
polyisocyanates and residual monomeric HDI requires appropriate protective
measures referred to in the safety data sheet. These products may therefore
be used only in industrial or trade applications. They are not suitable for use
in homeworker (DIY) applications.
The manner in which you use and the purpose to which you put and utilize our products, technical assistance and information (whether verbal, written
or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative
that you utilize our products, technical assistance, information and recommendations to determine to your own satisfaction whether our products,
technical assistance and information are suitable for your intended uses and applications. This application-specific analysis must at least include
testing to determine suitability from a technical as well as health, safety, and environmental standpoint. Such testing has not necessarily been done by
Covestro. Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available
upon request. All information and technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly
understood and agreed that you assume and hereby expressly release us from all liability, in tort, contract or otherwise, incurred in connection with
the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not
bind us. Nothing herein shall be construed as a recommendation to use any product in conflict with any claim of any patent relative to any material
or its use. No license is implied or in fact granted under the claims of any patent.
This product is not designated for the manufacture of a medical device or of intermediate products for medical devices1). [This product is also not
designated for other specifically regulated applications (e.g. including cosmetics, plant protection, fertilisers, plant strengtheners, food processing, food
contact and others). If the intended use of the product is for the manufacture of a medical device or of intermediate products for medical devices or
for other specifically regulated applications Covestro must be contacted in advance to provide its agreement to sell such product for such purpose.]
Nonetheless, any determination as to whether a product is appropriate for use in a medical device or intermediate products for medical devices, for Food
Contact products or cosmetic applications must be made solely by the purchaser of the product without relying upon any representations by Covestro.
1) Please see the "Guidance on Use of Covestro Products in a Medical Application" document.
Edition: January, 2018
Editor: Coatings, Adhesives & Specialties
Covestro Deutschland AG
Kaiser-Wilhelm-Allee 60 Contact:
51373 Leverkusen,Germany CAS Single Point of Contact EMEA
www.covestro.com e-mail: cas_spoc_emea@covestro.com
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