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Desmodur® BL 3175A

Blocked aliphatic HDI-polyisocyanate. With Desmophen® grades to formulate lightfast one-component polyurethane stoving coatings; as an additive to improve flexibility and adhesion.

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Product Types

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Material

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General Characterization

Desmodur BL 3175A is a blocked aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) and dissolved in aromatic 100.

Storage Conditions

Desmodur BL 3175A should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. Processability of this product can be adversely affected by contamination. Brief heating to maximum 50ºC has no adverse effect on product properties. Recommended storage temperature is 0º-50ºC. At temperatures above 120°C, Desmodur BL 3175A begins to decompose.

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Packaging Type

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Technical Properties & Datasheets

Property Name Test Method Unit Value
Solids % 73 - 77
Free NCO content % ≤ 0.2
Viscosity at 25°C mPa∙s 2,000 - 4,000
Hazen color value ≤ 60

Property Name Test Method Unit Value
Flash point (Setaflash) °C 51
Appearance Clear, paleyellow liquid
Weight per gallon at 25°C lb. 8.83
Blocked NCO content % 11.1
Specific gravity at 25°C g/cm3 1.06

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Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
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