Technical Information

Description:

Aviron BK"3 in 1" is a 1-component, semi-gloss coating showing very good adhesion properties and elasticity. Low solvent content, active rust-inhibitive pigments, excellent hiding power, both suitable as a primer or a finish. Excellent resistance properties, German approval for food contact, can be applied on practically all types of substrate, good filling properties, good edge covering and fast drying. Meets the requirements of DIN EN ISO 12944 and DIN 55928.

Recommended areas of application:

Protection against corrosion of constructions, machines and transport vehicles made from iron, steel, stainless steel, aluminium, zinc (galvanised) and other non-ferric metals, hard plastics, etc. in rural, urban, industrial and maritime areas. As a protective coating for new construction or maintenance, both primer and topcoat, as a primer for 1-component finishes and most 2-component finishes. Ideal for constructions built from several types of material.

As a substitute for toxic red-lead (tested by the German Railroad authorities), as a substitute for environmental unfriendly PVC /Chl. Rubber coatings (IKS tested), partly as a substitute for epoxy coatings and complicated acrylics and as a high performance alternative for alkyd coatings.

Practical examples:

For example road-gritters, sea containers, high-tension towers, lorry chassis's, building equipment, bridges, cranes, vessels, boats, cladding (both coated or bare), railway stations, platform structures, fences, gates, production halls, pipelines, storage tanks, gutters, cooling equipment, and many other objects.

Technical information

o Product description:

Combination of various Polyester resins combined with environmental friendly, very active, multiple-phase rust-inhibitive pigments, lead-, chromate and zinc-free. Solvent combination is free of aromatic hydrocarbons like xylene or toluene.

o Viscosity 140 sec. / DIN 4 mm

o Thinning:

- Aviron's Kombi Thinner (short drying time)

- Aviron's Special-Thinner (retards initial drying)

- Nitro-thinner and or 2-C thinners may be used (check compatibility)

- White spirit, etc. are not suitable

Application instructions ( brief)

o Suitable substrates:

Iron- and steel constructions properly degreased and free from rust crusts and mill scale. Manually prepared rusted surfaces (min. St 2), wet blasted substrates and flash-rust are acceptable. Equipment build from various types of metal like iron, steel, galvanised steel, aluminium and other non-ferric metals, G.R.P., hard-PVC, wood etc. Steel, stainless steel, zinc, well adhering coatings and many other substrates.

o Temperatures:

ideal application temperature: +15°C to +25°C possible application temperature: -10°C to +30°C

o Density: 1,1-1,4 depends on colour

o Solids: 68% (by weight) 52% (by volume)

o VOC-value < 420 g/l

o Coverage:

- theoretical: 8,5 m^²/l. at 60 µm dry

- practical: depends on application losses,
surface roughness, porosity etc.

o Gloss: 20-50% according NCS, (depends on colour)

o Colours See colour card. Colours can be mutually mixed unlimitedly.

o Resistance: See below

Storage stability:

24 months in unopened, original cans, in a well ventilated dry environment.

o Packaging sizes:

- 5 l. cans with "material-saver" lids

- 750 ml cans (6 or 12 per carton)

- 10 l. and 25 l. cans on special order

- (1 week production time)

Recommended dry film thickness:

60 µm; minimal

2 coats of 60 µm each, totals 120 µm dry film thickness.

o Application:

Brush and roller application without dilution;

Air atomised spray: 30-35 sec. tip size 1,2 -1,8 mm; a larger opening requires less dilution;

Airless spray: viscosity 90 -120 sec./ DIN 4 mm at minimal 180 bar, orifice size 0,017 -0,019"; spray-angle 40 - 80°, only dilute if necessary (at low temperatures).

o Drying:

(at 20°C and 65% relative humidity)

- touch dry: after 20-30 minutes

- to recoat: after 90 minutes

no need to abrade before overcoating

- dry to handle: ± 100 minutes

- completely dried: ±8-10 hours

- optimal adhesion and stacking properties after approx. 3 days

- drying at elevated temperatures is not recommended

- the exact drying times depend on film thickness, ventilation, temperature, relative humidity, etc.

Material consumption:

Theoretical consumption: 8,5 m^² per litre at 60 urn dry film thickness, this dry film thickness can be achieved in a one-coat application.

Practical consumption is between 150 and 200 ml per square metre.

o Health & Safety:

Extensive information is available from the health and safety data sheets.

General

o Apply to general health and safety instructions, e.g. keep away from heat, sparks and open fire; do not eat, drink or smoke during application, use only in well ventilated areas (see safety information sheet)

o Always: Stir well before use! Check colour!

o Do not mix with other substances than indicated by manufacturer.

o Do not dilute for brush and roller application.

Iron and steel

o Remove rust and rust scale, loose mill scale, oil, grease and all other impurities by appropriate means. Apply coating on a clean and dry substrate.

o Dependable on exposure apply one or more coats by brush or roller (do not dilute). For spray application dilute according the list printed on page 4.

o The service life increases at thicker total dry film thickness. In practice one up to 3 coats is recommended, dependable on exposure.

o On vertical objects a wet film thickness up to 150 µm without sagging can be easily applied (depends on application method).

Rusted steel

o Remove loose rust (rust scale), a sound substrate is required for optimum and lasting result (minimum degree of surface preparation up to St 2; ISO 8501-1; 1988).

o Aviron BK"3 in 1" penetrates into the remaining rust. To prevent further corrosion of such a rough substrate, apply sufficient material (at least one extra coat).

Aluminium (light metals)

o Slightly abrade, adhesion promoter or primer is not required, degrease and clean the substrate properly.

o Do not abrade with steel fibre, preferably use a plastic fibre embedded abrasive (e.g. Scotch Brite® or similar).

o Apply normal thickness (not too thin!).

Adhesion test: please note that optimal adhesion is achieved after 3 days.

Weathered galvanised steel

o Properly clean and degrease total substrate (e.g. use multiclean), carefully remove all loose matter and zinc salts (white rust).

o Apply sufficient film thickness on already rusting and consequently rough substrates.

New galvanised steel

o Slightly abrade, adhesion promoter or primer is not required, degrease and clean the substrate using a water-based cleaner/degreaser (e.g. multiclean).

o Carefully remove zinc salts (white rust). Do not abrade with steel fibre, preferably use a plastic fibre embedded abrasive (e.g. Scotch Brite® or similar).

o Only apply on a well-prepared, clean and dry substrate, free of grease, oil and all other contaminants, Apply sufficient film thickness (min. 60µm dry) in order to obtain proper adhesion and long-term protection.

Plastics

· Properly clean and degrease. Check compatibility by applying "3 in 1". Most plastics like PVC window frames, GRP (glass-fibre-reinforced polyester), previous coatings, etc.,

· Aviron BK"3 in 1" is excellently suitable.

· Not suitable substrates are "soft" plastics alike Polyethylene (=Poly-olefins); Plexiglas® (acrylics) and Polystyrene may dissolve, but can be coated.

Other substrates

o There are many more possibilities. Due to its elasticity "3 in 1" can be used on wood if a permeable coating is not required. Even on glass "3 in 1" shows proper adhesion. On concrete floors add "3 in 1"activator to obtain a abrasion resistant floor which can be taken into service within a very shortly after application.

Further Information

o Aviron BK"3 in 1" may be disposed of without extra cost for chemical waste (according German legislation).

o Adding "3 in 1Glanz-Additiv" (750 ml to a 5 litre can) will result in an approx. 20% higher gloss level.

Minimum tenability

The tenability indication on the cans implies the warranted tenability in unopened, original cans, in a cool, well-ventilated dry storage area. The indicated tenability is no expiry date, under normal conditions the coating may be used up to 5 years without loss of quality. The indicated minimum tenability should especially help to use the older cans first. As long as the coating material can be stirred homogeneously, she can be applied without problems.

Brush application

o Apply material with standard round, oval or flat brushes (industrial quality), d.f.t. 40-80 µm can be achieved. After 1-2 hours the next layer can be applied (avoid excessive brushing to prevent bleeding when different colours are used!). Colours containing micaceous iron oxide can be applied up to 100 µm dry easily.

Spray

o The table below contains guidelines for spray application; please follow directions of equipment manufacturers. The use of Aviron Kombi-Thinner is strictly recommended. When spraying a dry film thickness from 50 µm (small objects, air atomised) up to 125 µm (large objects, airless) can easily be achieved.

Roller application

· A short nap synthetic roller is recommended (up to 12 mm nap), nylon, suitable for 2-component coatings; a d.f.t. of 40-60 µm can be achieved. Do not use foam rollers.

Special effects

Aviron BK” 3 in 1” can be used for special effects. Apply undiluted material shortly after drying of previous coat, the effect depends on opening, pressure and distance. For better "hardness" add Aviron special activator.

	"3 in 1" small objects	colours large objects	"3 in 1" m.i.o.'s large objects
Air pressure 4-5 bar	20-30 sec./ 4 mm dilute 10% Kombi-Th. 30-40 sec./ 4 mm dilute 5% Kombi-Th.	30-40 sec./ 4 mm dilute 5% Kombi-Th. 100-150 sec./ 4 mm dilute 0-3% Kombi-Th.	ca. 60 sec./ 4 mm dilute10% Kombi-Th. ca. 120 sec./ 4 mm dilute 3-5% Kombi-Th.
Gravity cup, Pressure cup or Suction cup - opening 1,4-1,7 mm - opening 2,0-2,5 mm - opening 2,5-3,5 mm
Airless Min. 150 bar - tip 17/40 tot 19/40 - tip 21/40 tot 23/40 - tip 25/40 tot 27/40	— — —	ca. 80 sec./ 4 mm dilute 5% dilute max. 3% no dilution	ca. 100 sec./ 4 mm dilute 5-7% dilute max. 3% no dilution
Air-mix 90/3 bar	30-40 sec./ 4 mm dilute max. 10%	40-50 sec./ 4 mm dilute 5%	50-60 sec./ 4 mm dilute up to 5%
opening 0,2-0,5 Z. 40°
HVLP5/1bar	20-30 sec./ 4 mm dilute 12%	30-40 sec./ 4 mm dilute 6%	30-40 sec./ 4 mm dilute max. 12%
opening 1,6-3,5
Airbrush 0,8-2 bar	20 sec./ 4 mm dilute 15%	—	—

Support: Selection of the appropriate airless filter3: current filters are:

red 180 mesh/cm^² size: 0.084 mm for very low viscosity lacquers e.g. 0.007-0.013" tip-size

yellow 100 mesh/cm^² size: 0.14 mm for normal to high-build coatings e.g. 0.011-0.019" tip-size

white 50 mesh/cm^² size: 0.32 mm for zinc-rich and mio coatings e.g. 0.015-0.025" tip-size

green 30 mesh/cm^² size: 0.5 mm for heavy materials alike bitumen e.g. tip-size 0.027" and up

For Aviron BK yellow and white are used.

Dipping

o Due to its basic properties, drying time, re-coatability, environmental acceptability, Aviron BK"3 in 1" is suitable for dipping. Very little deposit formation in the dipping vessel.

o The required viscosity depends on object and passing method, normally at 20-35 sec./ DIN 4 mm. Adjust viscosity with Aviron special "dipping" thinner.

o We recommend to stir the contents of the dipping vessel continuously at very low speed, complete circulation of the vessel once or twice a day is considered sufficient (practical experience).

o The yearly consumption should be minimal twice the content of the vessel.

Temperatures

o During application a temperature of object and surroundings around 20°C is optimal. Temperature should be between + 2°C and + 30°C.

- At higher temperatures the drying speed increases, not the curing (dry hard) time.
Drying speed can be retarded (in the summer) by using Aviron Special-Thinner (the curing will not be retarded).

- At very low temperatures apply "warm" material or add some thinner.

- "3 in 1" can also be applied at very low temperatures, even down to -10°C, the drying time increases and also the flow
properties will suffer; do not apply on ice or frost.

o The cured coating shows excellent heat resistance. Practical experience learned that exposure to dry heat up to max. 300°C has no influence on the quality if the product. Dependable on colour discoloration should be expected from ca. 120°C and up. For temperatures over 200°C the colour oxide-red RAL 3009 is recommended, up to 250°C silver-aluminium RAL 9006 and black RAL 9005 are recommended.

- Also temperature-shocks (e.g. a sudden temperature change from + 250°C down to + 5°C (cold water), from +70°C down to -20°C) and extremely low temperatures (down to -50°C) showed no negative influence on the coating.

o The ideal storage temperature for the coatings is between 10º and 20ºC. Freezing normally does not harm. Temperatures above will shorten the storage stability.

Drying times

o "3 in 1" is an air-drying coating, which is normally applied without activator.

o The precise drying times depend on film thickness, ventilation, relative humidity and air-temperature.

o Thicker coat can easily be applied in one coat, however, this will cause a considerable increase of the drying time. "3 in 1" reacts thermoplastic during a few days after application and cannot be abraded.

o Thicker coats or several coats applied in a short period of time will cause a general increase of the total drying time. It is recommended to apply a thin coat first, followed by a thicker coat.

o The drying mechanism of "3 in 1" causes the adhesion to increase after approx. 3 days (completely dry). During this drying period, objects cannot be stacked, as blocking will occur. If applied as a primer "3 in 1" may be mixed with "nitrofest".

o Long-term exposure to liquids (e.g. rain on horizontal surfaces) may cause "moisture stains" during the curing (up to 5 days after application).

o Ventilation with fresh air accelerates the drying/curing speed; forced drying with warm air over 30ºC slows down the curing speed.

o "3 in 1" activator shortens the drying times (not dry to touch) and increases the mar resistance of the surface considerably (especially for dark colours). The addition should be between 5-10% for topcoats only (not recommended for primers!), the mixture should be used within one working day. Please do not use "3 in 1" activator in combination with metallic or m.i.o. coatings (610, RAL 9006 and 9007).

Recoat intervals at 20°C / 65% relative humidity
primer	topcoat	minimum	recommended
"3 in 1"	"3 in 1"	15 min.	> 2 hours
"3 in 1"	Robust-Lack	15 min.	> 2 hours
"3 in 1"	S-Glasur	30 min.	> 2 hours
"3 in 1"	Alkyd paint	30 min.	> 1 hour
"3 in 1"	Water-based	2 hours	> 5 hours
"3 in 1"	nitro-cellulose-lacquer	5 hours	> 8 hours
"3 in 1"	2-comp-acrylic	12 hours	> 24 hours
"3 in 1"	2-comp-epoxy	24 hours	> 24 hours
"3 in 1"	2-c-polyurethane	16 hours	> 24 hours
"3 in 1"	PVC (vinyl)	15 min.	> 2 hours

Recoating

o "3 in 1" dries to a dirt repellent, eggshell finish (semi-gloss), normally a two-coat system is sufficient, an extra topcoat is not necessary.

o "3 in 1" can be recoated unlimitedly with itself (abrading/sanding not necessary).

o If required, "3 in 1" can be recoated with all sorts of one-component coatings and with several (tested) two-component coatings. However, some type of coatings may require a longer drying time of "3 in 1" (fast drying two-component high-build epoxy coatings and adhesion primers with a solids of < 10% are not suitable as topcoat for "3 in 1").

o The table above contains guidelines (minimum interval and recommended interval time), recoating is possible without abrading/sanding at any later moment.

o Recoating according the German Railway standard: When recoating "3 in 1"with coatings according page 75 and 77 of TL 918 300 T2 (two-component epoxy and polyurethane coatings) a 24 hours interval is recommended due to the aggressive nature of the solvents, in order to prevent resolving or bleeding. Under normal circumstances an interval of two hours is sufficient, at varying weather conditions or at low temperatures recoat when the material is dry to handle, in any case the material can be recoated the next day without any problem

Gloss

o Degree of gloss of "3 in 1" is "eggshell/dirt repellent, and is, and differs per colour in order to obtain an optimal pigmentation (hiding power).

o Degree of gloss according NCS: 20 - 50% (depends on colour).

o By mixing "3 in 1" with Aviron's Robust-Lack (high gloss) a higher gloss can be obtained, by mixing with Aviron BK"nitrofest" (flat) a lower gloss can be obtained.

Colours

o Aviron BK"3 in 1" is available in many colours (see colour card). All colours are intermixable in any mixing ratio,

o All colours show optimal protection against corrosion and optimal hiding power, this is the reason for different pricing amongst the colours.

o Special colours are available from 25 l. orders according a colour standard (RAL, NCS) or colour sample.

Important: Aluminium /m.i.o. coatings

o The technical information herein is based on normal colours. For aluminium and m.i.o. coatings not all data does apply (aluminium-effect, m.i.o. effect, e.g. RAL 9006, 9007, DB 601, 703, etc.). These colours should not be used for food contact applications or for toys. These coatings can be applied in a thicker film (+50%) and will dry somewhat slower accordingly. They also show better protection against corrosion. ^”3 in 1" activator concentrate is not suitable for these products, Quick-Härter could be used instead.

TÜV-tested: Aviron BK"3 in 1" successfully passed all corrosion resistance tests for lead- and chromate free coatings by TÜV, the quality control system of BRANTH CHEMIE assured by TÜV.

DB-tested: (Deutsch Bahn = German Railways) Aviron BK"3 in 1" is extensively tested as substitute for red-lead primers and approved for protection of steel-constructions. (Material No.: 672.05 according TL 918 300 T2).

PVC-substitute: Aviron BK"3 in 1" complies with and even surpasses the requirements of PVC-coatings according DB-TL 918300 BL 77, extensively tested by IKS (short- and long term).

Epoxy- substitute: Aviron BK"3 in 1" can

partly be used as substitute for 2-ccomponent epoxy coatings (e.g. for cooling equipment). Up to a resistance against sulphuric acid 40% and potassium hydroxide 25% (spot-test), completely cured Aviron BK"3 in 1" complies with all requirements according DB-TL 918300 Page 87.

Classification: According the German hazardous substances decree Aviron BK"3 in 1" does not contain any substance requiring classification with a warning symbol. Therefore Aviron BK"3 in 1" does not require restrictions for applicators with regard to storage, transport, personal protection, environment waste removal, etc.

Food contact: Aviron BK"3 in 1" can be

used for application of the inside of storage tanks and processing equipment for food products, according the directions of the German Ministry of Health (XL), (tested by the approved laboratory of Dr. Kittel.)

Toys: Aviron BK"3 in 1" may be used for playground equipment or toys, on which normally is chewed or sucked, and direct contact with the skin occurs (tested according DIN 53160, the test solutions showed pH values between 2,4 and 8,8).

Anti-slip properties: For stairways, floors, etc. we recommend the application of RAL 9007 or DB 0601 (or mixtures with these colours), the roughness of the dried coating provides a non-skid effect.

Electrostatic conductivity: The electric conductivity of Aviron BK"3 in 1" is sufficient to make the product suitable for petrol storage tanks exteriorly. Values: RAL 7032 = 0,04 x 10⁶ kΩ; RAL 9006/9007 = 0,02 x 10⁶ kΩ.

Resistance: Resistance against many substances was tested successfully according DIN 53168-B, e.g. against transformer-oil (up to 60°C), diesel/fuel oil, gear oil (up to 80°C), hydraulic oil (up to 80°C), lubricating grease, anti-freeze (f.e. VW-Audi glycol 100% and 50%, Glythermin NF 50%), cooling fluids (pH 8-11),

salt water (5% = sea water), molasses, 1,5% acetic acid, 10% ethyl alcohol, bird droppings (sea-gull and pigeon), etc.

DIN-Tests: a brochure with test-results is available upon request, containing e.g.: Cross cut adhesion test according DIN 53151 respectively DIN-EN-ISO 2409. Salt spray tests according DIN 53167, 50021 SS, 53210, 53209. Condensation water tests according DIN 50018 KFW 2,0 S, 50018 SFW 0,2 S, DB-TL. Impact resistance according DIN 53154. Abrasion resistance according DIN 53233. Elongation according DIN-EN-ISO 1519. Elasticity according DIN-EN-ISO 1520 and many other tests. Colour: Slight deviation with regard to colour standards (RAL) or samples may occur in individual cases, this is dictated by the choice of the raw materials. Quality control is carried out visually and with a computer system according CIE colour model. Tolerances/margins are determined at Branth Chemie internally according DIN 6175.

Quality control: Apart from our quality control according the Q.C. manual, the purchaser of material (from 50 l. and up) can be supplied, upon request, with a quality certificate according DIN 50049-2.3. Eco-Audit: Aviron BK"3 in 1" is manufactured according the EG-Ecological-Audit directive, respectively according DIN-ISO 14001.

Waterway signalisation (WSV-approval) Aviron BK"3 in 1" is approved for "floating" waterway markings like buoys, etc

Product code for coatings according GISBAU

Primer, pigmented, solvent based, free of aromatic

hydrocarbons: M-GP02

Coating, solvent based, aromatic free: M-LL01

Classification according VdL-RL 01 "Coatings for the building industry"

Metal protection, corrosion resistant primer, semi-gloss topcoat, free from aromatics.

Classification according DIN 4102-1 Aviron BK"3 in 1" meets the requirements of "Baustoffklasse B2"

VOB / DIN 18363

Aviron BK"3 in 1" is approved for all sorts of steel substrates and suitable for application on most metal substrates. For applications acc. DIN 55928 Part 5 Table 5 (Duplex Systems) excellent practical results are available. The requirements acc. DIN 55928 Part 5 Table 6 (Water engineering with steel) Aviron BK"3 in 1" are only met in some cases, e.g. as substitute for red lead. A freshly applied coating of Aviron BK^”3 in 1" can hardly be sanded or abraded due to the high flexibility.

Aviron BK"3 in 1" shows excellent adhesion on previous coatings, and all tested topcoats adhere excellently when applied on Aviron BK"3 in 1".

Approvals for steel-constructⁱons and –equipment

DIN 55 928 T 5 P221159697

For the erection, modification and maintenance of building constructions Aviron BK"3 in 1" is approved according following Ü-mark. The approval concerns practically all Corrosion Classes and practically all Coating Systems according DIN 55928 T5 Table 4

Aviron BK"3 in 1" should not be used for extreme chemical exposures (alike immersion) -acc. Remark 2-. When using for O.E.M. or shop application please note Aviron BK"3 in 1" is more elastic and flexible as e.g. 2-component coating systems).

Primer

Aviron BK"3 in 1" can be applied on all steel substrates as a primer, prepared as follows: Sa 2, Sa 2^½, Sa 3, St 2, St 3 - thus on blasted or manually prepared, slightly rusty substrates. Aviron BK"3 in 1" substitutes all primers according DIN 55928 T5 Table 4 and is an equivalent for red lead primers according Part 3.3.2.1. of DIN 55928 T5.

Topcoats (Intermediate and finish)

Aviron BK"3 in 1" is approved as intermediate and topcoat and can be used as substitute for the following systems acc. DIN 55928 T5 Table 4: Alkyd resin, Alkyd combinations, Epoxy ester, Vinyl-chloride-copolymer (PVC), Chlorinated Rubber, PVC-combinations, Chlorinated Rubber combinations, Acrylic-copolymer-combinations, Acrylic-copolymers, Epoxy and Polyurethane.

Corrosive exposures (Applicability)

Aviron BK"3 in 1" is suitable as a primer, intermediate and topcoat for following exposures: Interior, rural, urban, industrial and marine atmospheres, as well as for the following exposures in the open air: chemical (CH), sprinkler salt, - sand, - grit and exhaust fumes. It may be used in the open air as well as in confined areas on accessible and inaccessible surfaces. For chemical exposures in confined areas Aviron BK"3 in 1" can be used as primer and can be covered with special, chemical resistant, 2-component coatings.

Aviron BK"3 in 1"fulfills DIN EN ISO 12944)

Aviron BK"3 in 1" is qualified according DIN-ISO 12944-6 for all 6 corrosion categories in atmospheric conditions on steel (Sa 2^½) and hand prepared steel (St 2). According DIN-ISO 12944-6 the lifetime expectancy in corrosion categories C-5-J (extreme Industrial) and C-5-M (extreme Marine) is over 15 years for a 3-coat system. In the corrosion categories C-1 (minor), C-2 (light) C-3 (medium) and C-4 (strong) the highest possible lifetime expectancy is achieved for a 1-coat or a 2-coat system. According DIN 12944-5 Aviron BK"3 in 1" is approved for initial protection of steel substrates (prepared to Sa 2^½ or St 2) (Part 5.1.2.1.) and also for maintenance of previously coated substrates acc. Part 5.1.2.2.. According the requirements of DIN 129044-1 Part 5 (also 12944-5 Part 5.3) Aviron BK"3 in 1" does neither contain toxic nor carcinogen preparations and offers a low VOC-content.

The expected lifetime in the corrosion categories of DIN EN ISO 12944-6 are achieved by Aviron BK"3 in 1" as follows:

corrosion