UCECOAT® 7891

UCECOAT® 7891 is a high performance acrylated polyurethane dispersion specifically developed for UV curable field applied matte wood and VCT (vinyl composition tile) floor coatings. UCECOAT® 7891 allows for the development of low gloss formulations without the use of silicas or other particles. This results in formulations with better shelf life, since the settling of particles is no longer a concern. If very low gloss formulations are desired, silica can be used at very low levels to achieve this. The very low level of silica also translates into better formulation stability. Floor coatings based on UCECOAT® 7891 exhibit a good balance of flexibility and hardness, thus providing good adhesion and coin scuff. Excellent solvent and chemical resistance are also provided through use of UCECOAT® 7891.

Principal: allnex Radcure

Chemical Family: Polyurethane Acrylate, Polyurethanes (PU)

End Uses: Floor Coatings, Low Gloss Coating, Matte Paint, Wood Coating

Compatible Substrates & Surfaces: Vinyl, Wood

Features: Chemical Resistance, Excellent Adhesion, Excellent Flexibility, Good Hardness, High Performance, Solvent Resistance, Tack-free

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Binder & Resin
Chemical Family
Polyurethane Acrylate,
Polyurethanes (PU)
Product Code
MITM00593
Single Ingredient
Yes
Technologies
CASE
Product Families
CASE — Resins & Binders
Polyurethanes (PU)

Features & Benefits

CASE Ingredients Features
Chemical Resistance,
Excellent Adhesion,
Excellent Flexibility,
Good Hardness,
High Performance,
Solvent Resistance,
Tack-free
Product Performance
  • Excellent appearance in matte coatings
  • Superior stability of matte formulations
  • Excellent solvent and chemical resistance
  • Tack-free after water evaporation

The actual properties of UV cured products also depend on the selection of the other formulation components, such as additives and photoinitiators.

Applications & Uses

Coating End Applications
Floor Coatings,
Low Gloss Coating,
Matte Paint,
Wood Coating
Compatible Substrates & Surfaces
Vinyl,
Wood
Cure Method
Radiation Cure
Markets
Paints & Coatings
Applications
Paints & Coatings — Building & Construction
Floor Coatings,
Wood Coatings & Finishes
Product Applications
  • UCECOAT® 7891 is recommended for use in UV curable field applied floor coatings.

Properties

Physical Form
Dispersion,
Paste

Technical Details & Test Data

Wood Coating Construction
  • Sand the wood panel with P240 sandpaper.
  • Apply first coat at 90 microns (3.6 mils) wet, and air dry to < 6% moisture content.
  • Apply second coat at 55 microns (2.2 mils) wet, air dry to < 6% moisture content, and cure at 25 fpm (400-500 mJ/cm*) with an HID Bulldog 15-3000.
  • Sand the wood panel with P240 sand paper
  • Apply third coat at 50 microns (2.2 mils) wet, air dry to < 6% moisture content, and cure at 20 fpm (500-600 mJ/cm') with an HID Bulldog 15-3000
Formulation Properties

STARTING POINT FORMULATIONS (WOOD OR VCT)

PRODUCT %
COATING GLOSS (60°) 15-35 8-15 3 -5
UCECOAT 7891 85-88 77-81 76
Water (deionized) 7-9 13-16 17
Wetting agents 1 1 0.9
Defoamers 0.5-1.0 0.5-1.0 0.6
Flow/leveling agents 0.5 0.5 0.1
Aquamat® waxes'" 2-4 2-4 2
Acematt® silicas - 29-30 2.4
Photoinitiator 1 - 2 0.5-1.5 1 -2
Solid Content (%) 30 - 31 1-2

29 - 30
  • Coat at 75-150 microns (3-6 mils) with a T-bar or roller applicator on wood or VCT; allow to dry
  • Cure at 425-600 mJ/cm2

PROPERTIES OF STARTING POINT FORMULATION

PROPERTY THREE COATS ON OAK/BEECH
COATING GLOSS (60°) 15 -35 8- 15 3 -5
Crosscut Adhesion (610 tape) 5B 5B 5B
Hamberger Planer (automated coin test; Newtons) 20 15 15
Pencil Hardness (Erichsen; Newtons) 12 6 6
MEK Double Rubs 200 200 200
Chemical resistance (24 hour spot test, with cottonball, covered)      
Mustard No stain or distortion
Eosine (red dye) 2% No stain or distortion
Red Wine No stain or distortion
Coffee No stain or distortion
Ammonia 1% No stain or distortion
Ammonia 10% No stain or distortion
Water No stain or distortion
Ethanol 50% No stain or distortion

Safety & Health

Safety Information
  • Avoid contact with skin and eyes and breathing vapors. Direct contact with this material may cause minimal eye and skin irritation. Wash thoroughly after handling.

Packaging & Availability

Packaging Type
Drums,
Pails

Principal Information

Group Principal Number
S000001
Principal
allnex Radcure

Storage & Handling

Storage Conditions
  • The recommended storage temperature range for UCECOAT 7891 is ≥4°C (39°F) to ≤40°C (104°F). Protect the product from freezing. Avoid conditions that may expose the material to high temperatures.
  • Protect from direct sunlight. Use with adequate ventilation. Keep container closed. After prolonged storage product can settle and may require agitation to re-disperse.
  • This product is stable under normal conditions of handling and storage.

Other

Appearance
Opaque liquid
Appearance (SDS)
Dispersion
Color (SDS)
White
Flammability (SDS)
Non flammable
Item Number
ITM15142,
ITM15143
Miscible in (SDS)
Water
Odor (SDS)
Practically odorless
Other Hazards
Polymerization may occur from excessive heat, contamination or exposure to direct sunlight .
Oxidizing Properties (SDS)
None
Protect from Freezing
Yes
USA/DOT UN Number
Not Applicable
Chemical Properties
ValueUnitsTest Method / Conditions
pH6.0-8.5-
Material Composition
ValueUnitsTest Method / Conditions
Solid Content32.0 %(W/W)%(W/W)
Physical Properties
ValueUnitsTest Method / Conditions
Density1.1 g/mLg/mLAt 25°C
Film Forming Temperature0.0 °C°C
Particle Sizemax. 125.0 nmnm
Storage Temperature39.2-104.0 °F°F
Viscositymax. 200.0 cPscPsAt 25°C
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Specific Gravity (SDS)1.02-
Volatile Content (SDS)68.0 %(W/W)%(W/W)
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life6.0 momo