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About

Product Types

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Material

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General Characterization

Desmophen R-12 is a slightly branched, saturated, hydroxyl-bearing polyester resin.
Desmophen R-12 is a coreactant for Desmodur® L-type aromatic polyisocyanates in two-component polyurethane coatings.

Storage Conditions

Desmophen R-12 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. The product tends to separate after extended storage. After homogenization, the product can be used with no loss of quality. Recommended storage temperature is less than 30ºC.

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Hydroxyl content % 5.0 ± 0.3
Flash point °C 179
Turbidity NTU ≤ 3
Viscosity at 73^oC mPa∙s 460 ± 190
Non-volatile content 100
Density at 20^oC g/ml 1.1
Appearance Slightly yellow liquid
Equivalent weight 337

Specifications

Property Name Test Method Unit Value
Hydroxyl value mg KOH/g 158 - 175
Acid value mg KOH/g ≤ 4
Viscosity at 23ºC mPa∙s 14,000 ± 3,500
Hazen color value ≤ 100
Water content % ≤ 0.1

Downloads

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

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