Hitex CM Primer


Primer for Hitex Puma MMA systems on metal and concrete substrates (e.g. iron, aluminium, stainless steel), with excellent adhesion.

£277.50(ex. VAT)
£333.00 (inc. VAT)
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Available for Delivery (See Delivery Options Below)


CM Primer is a low viscosity, colourless, 2-component reactive resin based on methyl methacrylate (MMA).

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Features & Benefits

  • Exhibits excellent adhesion to metal and concrete substrates
  • Easy to apply
  • Used as primer to give excellent bonding to concrete and metal substrates (e.g. iron, aluminium, stainless steel)
  • Strongly recommended, with CM primer, that curing and adhesion tests are conducted on the particular substrate prior to general use on site

Technical Data

CM Primer requires the use of a catalyst to enable curing of the system.

Technical Characteristics (Liquid State)
Viscosity, 25°C: 100-130 mPa*s DIN 53018
Density, 25°C: 0.99 g/ml ISO 2811
Pot life / processing time at 20°C: approx. 15 min.  
Curing time at 20°C: approx. 30 min.  
Flash point: 11.5°C ISO 1516

Technical Characteristics (Cured State)
Tensile strength: 13.8 N/mm² ISO 527
Elongation at maximum strength: 1.3 %  
Elongation at fracture: 1.3 %  
Modulus of elasticity: 1500 N/mm2  
Density, 20°C: 1.16 g/cm3 ISO 1183

Please note that an objective comparison with other data is only possible if norms and parameters are identical.

Substrate Preparation

All substrates must be dry, firm, solid and free of dust, fat and oil. Loose tiles and tiles over hollows must also be removed. Laitance and loose articles must be thoroughly removed. Steel substrates must be prepared to SA 2.5 (according to DIN 55929).

Surface structure shall allow the correct application of the primer.

  • Surface tensile strength shall be min. 1.5 MPa.
  • Mechanical preparation shall expose concrete aggregate.
  • Visible pin holes and craters shall be filled separately using filled primer or suitable cement mortar.

For further details, see the Installation Method Statement available from the data sheet tab above.


Prior to use CM Primer must be carefully stirred to achieve a uniform distribution of the paraffin contained in the product. CM Primer is thoroughly mixed together with the Catalyst (50% dibenzoyl peroxide), in accordance with the below guidelines.

It should be noted that the amount of catalyst powder to be added depends upon the substrate temperature.

Mixing Catalyst
at 30°C add 1% by weight of resin
at 20°C add 2% by weight of resin
at 10°C add 4% by weight of resin
at 0°C add 6% by weight of resin

Note: Weight to Volumetric conversion of Catalyst.

  • 1 cm3 of Catalyst weighs 0.64g
  • 1 g of Catalyst = 1.57 cm3


Substrate temperature (ºC) Primer pack (kg) BPO powder catalyst required (g)
0-5 10 600
5-15 10 400
15-25 10 200
25-40 10 100


Substrate temperature (ºC) Primer pack (kg) BPO powder catalyst required (g)
0-5 20 1200
5-15 20 800
15-25 20 400
25-40 20 200


  • Substrate surface temperature may range from 0°C to 40°C.
  • Do not apply when surface temperature is above 40°C and/or rapidly rising. Special care must be observed if area is under exposure to direct sunshine.
  • Substrate temperature must be at least 3°C higher than the actual dew point.


After the catalyst has been stirred in, the primer is poured onto the substrate in stripes and distributed with a short-pile paint roller. A notched rubber squeegee can be used for fast distribution of large quantities.

Apply at a rate of between 300 g/m² to 500 g/m² depending on density and porosity of the substrate. In any case, continue applying primer until saturation occurs to obtain a continuous resin film. On extremely porous substrates a second prime coat may be required.

When a continuous resin film is obtained, broadcast fire-dried quartz sand (particle size 0.7 - 1.2 mm or 0.3 - 0.7 mm) into the still wet primer.

Consumption of this broadcast sand:

  • Approximately 0.3 kg/m2.

For further details, see the Installation Method Statement available from the data sheet tab above.

Product Details

Data sheet

For Use By
Professional Use
For Use On
Metallic Substrates
For Use On
For Use On
Bituminous Surfaces
Application Method
Single, Two or Three Pack
Pack Size
2.0-2.8 kg/m²
Max. Application Temperature
Min. Application Temperature
UN Number
Pot Life
10 – 20 mins
Fully Cured
30-40 mins
Base Type
Solvent Free
Exterior / Interior Use
Exterior Use
Suitable For Use On
Suitable For Use On
Suitable For Use On
Bituminous Surfaces
Application Method
Product Type
Colour Family

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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Hitex CM Primer is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT

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