Highlight Product Additive G50 - Tecmos · 2020. 5. 5. · Straetmans High TAC GmbH 4 Possible applications for Additive G50 and its derivates: 4. Corrosion inhibition for lubricants

1 Straetmans High TAC GmbH | Technical Additives & Chemicals | Merkurring 94 | 22143 Hamburg | Germany

www.hightac.de | [email protected] | Phone : +49 (0) 40 69 64 87 – 0 | Fax : +49 (0) 40 69 64 87 – 11

Highlight Product

Additive G50

2 Straetmans High TAC GmbH

1971 Foundation: Dr. Straetmans Today Chemische Produkte GmbH raw materials: COSMETICS 2003 Spin off: Straetmans High TAC GmbH Technichal Additives & Chemicals Customers: metal working fluid producers

paint and coating industry

special applications

mother company


Possible applications for Additive G50 and its derivates:

1. Corrosion inhibitor for paints & coatings:

1. For solvent or aqueous borne systems.

2. For all types of metals & alloys (aluminium, iron&steel, copper, all others).

Additive G50/G50 wb/G50 S/G50 T and Additive G50 F/G50 N/G50 E

2. Flash rust inhibitor for water borne paints & coatings:

Additive G50 F, Additive G50 N and maybe Additive G50 E

3. Inhibitor for aluminium & zinc pigments, flakes, pastes and bronzes:

Additive G50, Additive G50 wb or Additive G50 S


Possible applications for Additive G50 and its derivates:

4. Corrosion inhibition for lubricants & metalworking:

1. From greases & oils to synthetic coolants.


Additive G50, Additive G50 wb or Additive G50 S

5. Temporary corrosion protection:

1. In house storage or transport.


Additive G50/G50 wb/G50 S and Additive G50 F/G50 N/G50 E


Additive G50 in comparison to common inhibitors for paints & coatings:

Additive G50 is a totally new inhibitor / inhibitor concept, offering a broader and

much more flexible application and use compared to common inhibitors!

„Effect“

FRI

G50

AC-pigments

Speed

+++

++

+

Influence on coating

-/+

+/+++

++

Long term

-

+++

+++

application wb/sb

wb

wb + sb

wb + sb

Clear coats wb

Yes

Yes

(-)

Clear coats sb

-

Yes

(-)


Another advantage of Additive G50 is it´s flexibility, meaning it can be

combined with other G50´s and inhibitors, offering synergistic effects!

Additive G50 in comparison to common inhibitors for paints & coatings:

G50 / G50 S G50 wb G50 F G50 N FRI (like F2M) AC-Pigment

G50 / G50 S / - - - - +

G50 wb - / + + + +

G50 F - + / + - +

G50 N - + + / - +

FRI (like F2M) - + - - / +

AC-Pigment + + + + + / + = can be combined - = not to combine


Corrosion inhibitor for aluminium / aluminium alloys:

Sample Thickness ø Test method Results

2K-EP-sb+2,0% G50 88μm Filiform test < 2mm after 504 h 88μm Salt spray test 2 mm after 1008 h 91μm CC with 14d storage in water Before storage: CC 0 130μm Recoating on CA8000 PPG Levelling ok, CC 0 89μm Pendulum hardness (n=5)

Erichsen cupping ø = 18 5,6mm

2K-EP-wb+2% G50 74μm Filiform test < 3 mm after 504 h 75μm Salt spray test 1 mm after 1008 h 74μm CC with 14d storage in water Before storage: CC 0 126μm Recoating on CA8000 PPG Levelling ok, CC 0 76μm Pendulum hardness (n=5)

Erichsen cupping ø = 52 5,6mm

General conclusion:

Additive G50 improved corrosion protection for filiform and in salt spray test. It

has no negative influence on adhesion and recoating as well as on the hardness

and flexibility of the coating film.


Corrosion inhibition for paints & coatings:

Reference: 1K acrylic water based with 10.1 % zinc phosphate 250 h salt spray, 60 μm

1K acrylic water based with 5 % zinc phosphate and with 2 % Additive G50 wb 250 h salt spray, 60 μm

Additive G50 is a corrosion inhibitor suitable for many coating systems, in synergism with anti-corrosion pigments (like zinc phosphate) or as sole corrosion inhibitor e.g. transparent coatings. Here Additive G50 acts as partial replacement for zinc phosphate.


Corrosion inhibition for paints & coatings:

Reference: 2K PU solvent based, with 10.1 % zinc phosphate 504 h salt spray, 60 μm

2K PU solvent based, without zinc phosphate but with 2 % Additive G50 504 h salt spray, 60 μm

Additive G50 is a corrosion inhibitor suitable for many coating systems, in synergism with anti-corrosion pigments (like zinc phosphate) or as sole corrosion inhibitor e.g. transparent coatings. Here Additive G50 acts as full replacement for zinc phosphate.


Inhibitor for aluminium flakes / aluminium pigments:

Additive G50 can also act as a treatment for aluminium flakes/pigments in water based coatings, preventing the oxidation and the creation of hydrogen. Typical treatments of aluminium flakes/pigments are by chromates orSiO2 / Silanes Other treatments, like resins or phosphoric compounds, provide worse results, even under less aggressive / mild conditions.

Measurement of evolved hydrogen substrate (aluminium 74014) hydrogen untreated aluminium right away Silane-treated standard aluminium factor 1 Additive G50-treated* aluminium factor 3.2 Silane-treated standard aluminium + G50* factor 4

*0.4 % emulsions of Additive G50

3) A. Brinkmann, A. Zockoll; Stabilisierung von Korrosionsschutzpigmenten, Farbe und Lack, 2 (2010) 28-32.


Corrosion inhibition for lubricants & metalworking:

Additive G50 is useful as a multi metal corrosion inhibitor for many different kinds of lubricants and metalworking fluids. Through a proper emulsion it can be used in lubricant oils, metalworking fluids like neat oils, soluble coolants or synthetic coolants and special corrosion preventives. Besides providing corrosion inhibition, Additive G50 offers additional properties very useful for metalworking:

EP / AW properties (proved by Brugger and VKA test) Co-emulsifier Wetting agent

AA50 series in 3 % NaCl 5 % MWF emulsion 5 % MWF + 0.1 % Additive G50


Temporary corrosion protection:

100 h salt water 1000 h salt water 24 h salt spray 250 h salt spray

untreated 0.5 % G50 treated untreated 0.5 % G50 treated

Application: clean fresh panel – dipping – RT drying – testing Substrate: AA2024



Cu 10 h SWT 72 h

CuSn8 (bronze) 10 h SWT 72 h

CuZn27 (brass) 10 h SST 100 h

Additive G50 was originally developed for aluminium alloy AA2024 alloy (mainly composed of Al, Cu, Mg and Mn) but is also strong on other metals and alloys!

Zn 120 h SWT 120 h

DX51 hot dipped steel 200 h SWT 200 h

DC01 galvanized steel 48 h SWT 100 h

SWT: Salt water test with 3 % NaCl SST: Salt spray test



B C M N W G50 S

24 h 48 h 24 h 24 h 48 h 48 h

Additive G50 S on ST14 steel, applied through a paraffinic base oil. The dosage of Additive G50 S is 1.0% in the oil. All competitors (coded B, C, M, N and W) are commercially available products for temporary metal protection, rust removal, lubricating, penetration of rust and moisture displacement.

Compared to the competitors the simple formulation with Additive G50 S shows good results. Actually it showed least corrosion plus the best, most even film forming.


Additive G50 is roughly divided into two parts, one is a lipophilic backbone and the other are hydrophilic anchors. These anchors have a strong adsorption to metal surfaces.

Polymeric backbone

Metalophilic anchors

Polyoxyalkylene

Acidic groups

polare

Non polare

Result: Functional anchors go onto the metal surface

while polymeric backbone protects the anchors and seals as a second layer in one polymer


Solubility of Additive G50´s

Application of Polymeric Corrosion Inhibitors

SOLUBILITY overdosed => insoluble

right dosage => soluble PREMIX

POLARITY SOLUBILITY

Alkanes Aromates Acetates Glycolethers Alkohols Water Salt water

PREMIX Aromates or Acetates Any polar medium like polar base oils or binders Polar solvents or amines

Additive G50 S Additive G50 Additive G50 wb

When polarities are too extreme Additive G50 can´t be solved anymore! But if blended through a premix (Additive G50 S/wb) you solve it perfectly!


Brief summary of the Additive G50 types:

Additive G50

- Real multi metal corrosion protection! - Organic corrosion inhibitor for water* and solvent* borne coatings. - Temporary corrosion protection for storage & transport, without cleaning before repainting. - Corrosion inhibitor for lubricants & metalworking. - Inhibitor for aluminium & zinc flakes and pigments. - Additive G50 wb, ready to use for all water based applications. - Additive G50 T, especially for higher temperatures.

Additive G50 S

- Ready to use premix of Additive G50 and a fatty acid amide. - Best for non and low polar solvents / oils. - Also soluble in polar solvents and water*.

* = depends, premixing might be needed.


Brief summary of the Additive G50 types:

Additive G50 F

- Water free, ready to use premix of Additive G50 . - Organic corrosion inhibitor + flash rust for water based coatings.

Additive G50 N

- Aqueous, ready to use premix of Additive G50 . - Organic corrosion inhibitor + flash rust for water based coatings. - Temporary corrosion protection (like storage or transport).

Additive G50 E

- Aqueous, ready to use premix of Additive G50 . - Primary as temporary corrosion protection (like storage or transport), without cleaning before repainting. - As organic corrosion inhibitor + flash rust for water based coatings only through thorough blending.


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Highlight Product Additive G50 - Tecmos · 2020. 5. 5. · Straetmans High TAC GmbH 4 Possible applications for Additive G50 and its derivates: 4. Corrosion inhibition for lubricants