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UCOPOL M 551 is used to formulate one component and two component sealants and industrial adhesives.

Chemical Family: Isocyanates, Polyurethanes (PU)

End Uses: Solventborne Coating, Solventless & High Solids Coating

Viscosity: 24000.0 - 36000.0 cps

Features: Good Compatibility, Improved Flexibility

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Knowde Enhanced TDS

Identification & Functionality

CAS No.
26471-62-5
EC No.
247-722-4
Technologies

Features & Benefits

Labeling Claims
Characteristics and Applications
  • Prepolymer used to formulate 1K and 2K sealants and industrial adhesives.
  • It can be mixed with UCOPOL M 561, more tough, to adjust final properties and/or drying time

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Application Condition

UCOPOL M 551 in combination with reactive polyols can be used for the formulation of polyurethane self leveling coatings for concrete surfaces, such as
coatings for terraces, where flexibility performances are required. UCOPOL M 551 has good compatibility with esters, esters of glicolethers and aromatics. Alcohols cannot be used because they react with UCOPOL M 551.
It is recommended to use always urethane grade solvents ( < 0.05% water).

It can be mixed with UCOPOL M 541 in order to get performances such as flexibility and fast drying.

Properties

Physical Form
Appearance
Brown Liquid
Typical Properties
ValueUnitsTest Method / Conditions
Non Volatile Content100.0%
Free Monomer (TDI)max. 0.5%
NCO Content4.5 ± 0.5%
Viscosity (23°C)24000 - 36000mPa-s
Color (Gardner 1953)max. 2
Equivalent Weight~950

Regulatory & Compliance

Certifications & Compliance
Chemical Inventories

Storage & Handling

Shelf Life
6 Months
Storage and Shelf Life

In sealed drums we guarantee a storage life of six months, provided UCOPOL M 551 is stored under dry and cool condition. Once opened, the drums should be used in short time, because UCOPOL M 551 is sensitive to moisture that can cause the curing of the product inside the drum.