CYMEL® UI-27-EI

CYMEL® UI-27-EI Resin is a partially iso-butylated urea resin supplied in a mixture of ethanol and iso-butanol. CYMEL® UI-27-EI Resin is suitable for use in both acid curing wood coating applications and general industrial primer and topcoat formulations. CYMEL® UI-27-EI Resin is not suitable for exterior applications.

Principal: allnex Crosslinkers

Functions: Crosslinking Agent

Chemical Family: Urea Formaldehyde (UF)

Compatible Polymers & Resins: Acrylics, Alkyds, Cellulose Acetate Butyrate (CAB), Nitrocellulose, Polyesters, Polyvinyl Butyral (PVB)

End Uses: Primer, Top Coat, Wood Coating

Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Carrier
Chemical Family
Function
Crosslinking Agent
Product Code
MITM00282
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Product Benefits
  • Fast cure speed 
  • Good adhesion properties

Applications & Uses

Coating End Applications
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Cure Method
Markets
Applications
Product Applications
  • Acid curing wood coating applications
  • General industrial baking applications
Formulation Stability
  • The stability of baking enamels containing CYMEL® UI-27-EI Resin can be enhanced by the addition of alcohols, amines or combination of these.
  • Low molecular weight primary alcohols, such as n-butanol, are most effective.
  • Recommended amines are TEA, DMEA or 2-AMP at a concentration of 0.5-1.0% on total binder solids.
  • Ambient cure systems are usually stabilized only by addition of adequate amounts of primary alcohol, such as ethanol or n-butanol.

Properties

Technical Details & Test Data

Catalysis Information
  • CYMEL® UI-27-EI Resin may not require the addition of an acid catalyst to the formulation to obtain effective cure.
  • In many instances, the acidity of the backbone polymer in the formulation is sufficient to catalyze the reaction under normal baking conditions (15-20 minutes at 120-150°C).
  • If catalyst addition is required, then 0.5-1.0% of CYCAT® 4040 catalyst or CYCAT 296-9 catalyst based on total resin solids is recommended.
  • For wood coating formulations cured under ambient conditions, 6-10% CYCAT 4040 catalyst on total resin solids of the formulation is sufficient to obtain fast drying behavior.
  • In one-pack acid curing finishes, weak inorganic acids, such as CYCAT 296-9 catalyst, are strongly recommended.
Backbone Polymer Selection
  • CYMEL® UI-27-EI Resin is a very effective crosslinking agent for backbone polymer resins containing hydroxyl and carboxyl functional groups, such as alkyd, polyester or acrylic resins. CYMEL® UI-27-EI Resin has a high reactivity and a high tendency for self-condensation.
  • Although the optimum level of CYMEL® UI-27-EI Resin in a given formulation should be determined experimentally, ratios between 25% and 35%, based on resin solids, are typically most effective in a range of polymer backbone resins.

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000001
Principal

Storage & Handling

Storage Conditions
  • CYMEL® UI-27-EI Resin has a shelf life of 720 days from date of manufacture when stored at temperatures below 32°C.
  • Although low temperatures are not detrimental to stability, the viscosity of the product will increase making the resin more difficult to pump or pour.
  • Product viscosity can be returned to normal by gentle warming, however, care should be taken to avoid excessive localized heating as this can cause polymerization.

Other

Appearance (SDS)
Viscous liquid
Color (SDS)
Colorless
IATA/ICAO Proper Shipping Name
Resin solution
IATA/ICAO UN Number
UN1866
IMO/IMDG Proper Shipping Name
Resin solution
IMO/IMDG UN Number
UN1866
Insoluble in (SDS)
Water
Item Number
Odor (SDS)
Formaldehyde and ethanol
Other Hazards
Not applicable
Protect from Freezing
No
TDG Canada Proper Shipping Name
Resin solution
TDG Canada UN Number
UN1866
Temperature Control
Yes
USA/DOT Proper Shipping Name
Resin solution
USA/DOT UN Number
UN1866
Chemical Properties
ValueUnitsTest Method / Conditions
Free Formaldehyde Contentmax. 0.7 %%Titration Method
Material Composition
ValueUnitsTest Method / Conditions
Non-Volatile Content58.0-62.0 %(W/W)%(W/W)DIN EN ISO 3251 at 100°C, 1hr, pan
Optical Properties
ValueUnitsTest Method / Conditions
Color Scalemax. 50.0 APHAAPHA
Color Scalemax. 50.0 GardnerGardnerDIN EN ISO 6271
Physical Properties
ValueUnitsTest Method / Conditions
Storage Temperature-4.0-86.0 °F°F
Viscosity350.0-600.0 mPa.smPa.sDIN EN ISO 3219 at 23°C
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)78.0 °C°C
Density (SDS)1.01 g/cm³g/cm³
Evaporation Rate (SDS)max. 1.0 %%
Flash Point (SDS)24.0 °C°CSetaFlash Closed Cup
Relative Vapor Density (SDS)min. 1.0-
Volatile Content (SDS)21.0 %(W/W)%(W/W)
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life720.0 dd