TX980/0506

TECHNICALDATASHEET

CHEMI-TECH U.C.
Two Component Solvent Free Epoxy Coating

Thortex Chemi-Tech U.C. is a high performance solvent free MIXING

coating designed for use where exceptional resistance to chemical
attack is required.
Thortex Chemi-Tech U.C. is a two component material comprising
base and activator components which must be mixed together prior
Thortex Chemi-Tech U.C. is based on a special Phenolic to use.
epoxy resin and a polyamine curing agent system which produces
a highly cross linked polymer network. This unique system Stir the contents of the base component, continue stirring and
prevents permeation and subsequent attack of the coating by gradually add the total contents of the activator container, stir the
highly aggresive chemicals, allowing the system to be used combined mix until completely homogenous.
whenever superior chemical resistance is required.
The mixed materials should be used within 30 minutes of mixing
at 20°C (68°F). This time will be reduced at higher temperatures
Thortex Chemi-Tech U.C. offers excellent adhesion to steel and extended at lower temperatures.
and concrete, has outstanding resistance to a wide range of
industrial chemicals even under total immersion conditions and is
ideal for tanks, pipework, containment dykes, bund areas,
desulphurisation units etc. APPLICATION

Before proceeding, please read the following information Application should not be carried out at temperatures below 5°C
carefully to ensure that the correct application nor when relative humidity exceeds 85% or when the surface to
procedure is fully understood. be coated is less than 3°C below the dew point.

Best application results are obtained at a minimum substrate and

product temperature of 20oC. For optimum chemical resistance,
SURFACE PREPARATION the system must be applied and cured at a minimum temperature
of 20oC for at least 7 days prior to return to service.

Steel Surfaces - All surfaces to be coated should be abrasive Thortex Chemi-Tech UC is suitable for application by brush
blast cleaned to a minimum Sa2½ in accordance with BS7079 Part or roller, using good quality brushes or short to medium pile
A1:1989 or equivalent with a blast profile corresponding to rollers.
'Medium' in accordance with BS7079 Part C3 / ISO 8503 / 1. All
loose abrasive dust and debris must be blown clear or vacuum On concrete surfaces it is impotrant to stipple the Thortex
cleaned away. Steel surfaces do not require priming but should be Chemi-Tech UC into the primed surface to ensure good
coated within 4 hours of blast cleaning to prevent rash rusting. wetting of the surface.

Concrete Surfaces - All concrete to be coated should either be For large applications Thortex Chemi-Tech UC can be
lightly abrasive blast cleaned using wet or dry abrasive techniques applied by dual feed hot airless spray equipment, full technical
or alternatively high pressure water jetting. Care must be taken not details can be supplied on request from the Thortex Technical
to expose the aggregate in the concrete. All dust and abrasive Centre.
material shall be removed from the surface prior to coating.

Concrete surfaces should have a maximum moisture content of 7%

prior to any coating being applied.

Concrete surfaces should be primed with either Thortex Floor-

Tech SP Primer or Thortex Uni-Tech MC Primer in
accordance with the product tech sheet.
 TX980/0506
In areas requiring a slip deterrent finish, Thortex H.D. or W.D Chemical
Grip should be incorporated into the first coat with a further two Resistance Unaffected by total immersion in:-
coats of Thortex Chemi-Tech UC applied to seal the grip (At 20oC) Acetic Acid up to 20%
material and ensure the desired chemical resistance. Hydrochloric Acid up to 35%
Ortho Phosphoric Acid up to 75%
All equipment should be cleaned IMMEDIATELY after use with Sulphuric Acid up to 98%
Thortex Universal Cleaner. Nitric Acid up to 30%
Sodium Hydroxide All Concentrations
Theoretical Coverage Rate

2.9 m2/kg at 300 microns dft (31 ft2/kilo at 12 mils dft)

PHYSICAL PROPERTIES
Recommended Film Thickness

Wet 300 microns (12 mils) Abrasion Resistance 60 mgm loss per 1000 cycles
Dry 300 microns (12 mils) ASTM D 4060 -1 kg load-CS17 wheel
Impact Resistance 2.2 joules (191/2 in/lbs)
Note: Normally applied as a two coat system to achieve a minimum ASTM G14
film thickness of 500 microns. Dry Heat Resistance 177oC (350oF)
ASTM D2485
Water Vapour Permeability 4.69 x 10-6 perm.cm
Detailed working recommendations are available from the ASTM D1653
Technical Centre on request. Salt Fog Resistance Excellent, unaffected after
ASTM B117 10,000 hrs exposure
Humidity Resistance Unaffected 5,000 hrs exposure
BS 3900 Part F2
PHYSICAL CONSTANTS

HEALTH AND SAFETY

Mixing Ratio 2 parts base to 1 part activator by volume

As long as normal good practice is observed Thortex

Appearance Base Viscous coloured liquid Chemi-Tech U.C. can be safely used.
Activator Clear Amber liquid
Protective gloves should be worn.

Drying & Cure Times Vapour masks should be worn for spray application.
at 20°C (68°F) Usable Life 30 minutes
Initial Set 41/2 hours A fully detailed Material Safety Data Sheet is either
Minimum Overcoating 41/2 hours included with the material or is available on request.
Maximum Overcoating 24 hours
Full Cure 7 days
PACKAGING
Volume Solids 100%
Supplied in 2, 5 and 20kg packs
V.O.C. Nil

The information provided in this Product Data Sheet is intended as a general

Shelf Life Use within 5 years of purchase. Store in guide only and should not be used for specification purposes. The information
original sealed containers at temperatures is given in good faith but we assume no responsibility for the use made of the
product or this information because this is outside the control of the company.
between 5°C (40°F) and 30°C (86°F). Users should determine the suitability of the product for their own particular
purposes by their own tests.

Food Contact Meets USDA requirements for incidental

food contact.
FOR FURTHER INFORMATION PLEASE CONTACT

Thortex Division of E. Wood Ltd.

Standard Way, Northallerton, N. Yorks. U.K. DL6 2XA
Tel: +44(0)1609 780170 Fax: +44(0)1609 780438 & 777905
E Mail: thortex@ewood.co.uk