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2K Etch PrimerTechnical Data Sheet

16.05.03 L2.03.01

Description Two component, chromate free, etching primer surfacer for

general use in refinishing cars and also light commercial vehicles.

For fast turn round work, only denibbing with Scotch Brite is

necessary prior to the application of topcoat.

3 : 2

2K Etch PrimerActivator Etch

Primer

Mixing Ratio

Chart orMixing Stick B

2 -3 x 1

1.5 - 1.8 mm2 - 3 bar

5 10 mins 1 hrs 20C

20 mins 60C

Product & Ancillary ItemsProduct Lesonal 2K Etch Primer

Activator Lesonal Activator Etch Primer

Chemical Basis 2K Etch Primer - Combination of polyvinyl butyral, and other special resins

Activator Etch Primer - Combination of organic solvents and phosphoric acid

Method of Use

Substrates Sound original finishes with the exception of thermoplastic acrylics

Steel

Zinc coated steel

Aluminium

Lesonal Polyester Body Filler

Lesonal Polyester Spraying Filler

Substrate Preparation Prior to commencing any sanding work, thoroughly cleanse the surface of any

grease or wax with Lesonal Degreaser SB. Apply using two cloths in a wipe on,

wipe off process.Original finishes - sanding with P280 grit dry or P600-P800 wet.

Steel remove all traces of rust and abrade thoroughly until a clean surface is

achieved. Any millscale should be removed by shot blasting.

Aluminium and zinc coated steel - abrade thoroughly with Scotch Brite 447 (Red).

Lesonal Polyester Body Filler - finish sand with P280 grit dry.

After sanding work is completed and just prior to the application of primer, degrease

again thoroughly with Lesonal Degreaser SB.

Mixing Ratio Use Mixing Ratio Chart or Mixing Stick B

3 volumes - 2K Etch Primer

2 volumes - Activator Etch Primer

Mix in a parallel sided mixing vessel and stir well before use.

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2K Etch PrimerTechnical Data Sheet

16.05.03 L2.03.01

Spraying Viscosity When mixed as described the correct spray viscosity is achieved.

20-22 secs DIN Cup 4 at 20C

Pot Life After mixing the mixture must be used within 2 days at 20C.

Gun Set Up & Spraying Pressure Spray Gun Fluid Opening Spraying Pressure

LVLP (HR) Gravity Feed

HVLP Gravity Feed

Conventional Gravity Feed

1.8 - 2.0 mm

1.8 - 2.0 mm

1.5 - 1.8 mm

2.0 - 3.0 bar

0.7 bar

3.0 - 4.0 bar

Application Technique Apply two or three single coats; allow to dry until matt between each coat. Generally

this will take 5 - 10 minutes. (This time will be very much influenced by factors such

as temperature and air movement at the time of application.)

If the product is to be applied over a fresh synthetic finish, it is recommended that a

thin coat is applied first, and that care is taken in applying subsequent coats. Flash

off times between each coat should be also extended.

Build per Coat Sprayed 20 - 25 microns

Theoretical Usage

12 m2per litre at a layer thickness of 15microns (the practical material usage

depends on many factors, i.e. shape of the object, roughness of the surface,

application method and application circumstances)

Equipment Cleaning Use a nitrocellulose thinner.

Drying Times at 20C

Dry to sand

Dry to denib (with Scotch Brite)

Dry to recoat with Primer / Filler

1 hour

20 mins

15 mins

Infra red short wave equipment

Half power

Total time

5 mins flash off

7 mins low

12 mins

When recoating with a topcoat, it is always necessary to at least denib the product

with Scotch Brite.

Recommended Sanding Grades Method Sandpaper Grade

Wet, by hand or machine

Dry, by hand

Dry, by machine

P800 - P1000

P400 - P500

P400 - P500

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