BL Interface & Performance

Additives for Paper

Impregnation

Technical Service – Plastic Industries

Seite | 2

Paper Impregnation Process

Needs Additives

DryingUnwind RewindDip coating

Resin Bath

Wetting agent

Dispersant

Defoamer

Antidust

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Wetting Agents for Paper

Impregnation

TEGO® Surten W 111

• Alcohol alkoxylate

• 100% active

• No foaming

• Enhanced penetration into

the paper

• Nonylphenol ethoxylate-free

TEGOPREN® 5878

• Organomodified siloxane

• 100% active

• Low foaming

• Enhanced penetration into

the paper

• Nonylphenol ethoxylate-free

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Test Method / Wetting Behaviour of

Aminoresins on Paper

Draw down direction

For each test two stripes are cut from one sheet of paper. For the measurement always a

control without additive and one with the wetting agent is measured to acertain

comparable results. A drop with a defined volume is put on the paper and at once drawn

down with our draw down machine. Then the length and width of the resin film is

measured and noted down as difference compared to the control in % shorter (length) and

% broader (width).

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Determination of film length

The shorter the film the faster does the

resin penetrate into the paper

Determination of film width

The broader the film the better the

penetration into the paper

Test Setup & Performance of

Wetting Agents

1 2 3 4

1. Control without additive (powder

resin + hardener)

2. Competitor, Octylphenolethoxylate

3. TEGO® Surten W 111

4. TEGOPREN® 5878

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OMS are 10 Times as Effective as

Standard Wetting Agents

0

2

4

6

8

10

12

14

0 0,1 0,2 0,3 0,4 0,5

Concentration [%]

Fil

m l

en

gth

[cm

]

competitor

TEGOPREN 5878

0,05

Perf

orm

an

ce

high

low

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Where are Antifoams used?

• In Melaminic resins for impregnation of decor paper

and overlays

• In Phenolic resins for impregnation of Kraft paper

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Antifoam for Impregnation of

Decor Papers and Overlays

TEGO® Antifoam 2360

• Excellent antifoaming properties

• Especially designed for sensitive surfaces like Melamine or

Polyurethane

• No surface defects

• Transparent films

• Easy to handle emulsion

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Stirring Test for Foaming

Behavior of Resin Formulations

How to run the test1. 160 ml resin + defoamer is poured into a

250 ml beaker

2. Stirring for 1 minute at 2500 rpm

3. Resin is poured into a 50 ml calibration flask

4. Weight is determined

InterpretationHigh weight = few entrained air =

good defoamer performance

Low weight = much entrained air =

poor defoamer performance

The amount of air can be calculated by using the

following formula:

Volume of air % = 100 – (g*2)/D

g = weight of 50 ml stirred resin

D = density of the air free resin

The stirrer must be completely covered with resin.

Cage Stirrer:

Diameter: 2 cm

Height: 2 cm

1 23

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Antifoams / Results Stirring Test

Melaminic Resin + 0.2% Antifoam

0

5

10

15

20

en

train

ed

air

(V

ol.

-%)

Control Competitor TEGO® Antifoam

2360

Perf

orm

an

ce

high

low

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Antifoam for Phenolic Resins in the

Impregnation of Kraft Paper

TEGO® Antifoam 2290

• High efficient antifoam

• Based on paraffinic oil and is completely silicone free

• Very compatible

• Selfemulsifiable antifoam concentrate

• Easy to use

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Antifoams / Results Stirring Test

0

5

10

15

20

25

en

tra

ine

d a

ir [

Vo

l%]

Without antifoam competitor

antifoam

TEGO® Antifoam

2290

Phenolic Resin + 0.05% Antifoam

Perf

orm

an

ce

high

low

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200 µm Films of Phenolic Resin

on Glass

Without Antifoam Competitor Antifoam TEGO® Antifoam 2290

Antifoam dosage = 0,05 w%

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TEGOMER® Dispersing Agents

In the production of single-colored

surfaces the pigments may be

dispersed in the resin bath.

Mainly this is done in the production of

white surfaces by dispersing TiO2 in

the resin.

If the dispersion is not good enough,

separation of the pigment will occure.

These separations often build up hard

layers in the resin bath and are not easy

to remove.

Without TEGOMER® DA

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TEGOMER® Dispersing Agents

By adding TEGOMER® dispersing

agents separations are avoided.

No hard layers are build up and

cleaning of the impregnation bath

is getting easier.

With TEGOMER® DA

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TEGOMER® Dispersing Agents

C

C

C

C

C

C

C

C

C

C

c

TEGOMER® DA 640

• Polyether phosphate

• Anionic

• 30% active content in water

• Solvent and Nonylphenol

ethoxylate-free

TEGOMER® DA 850

• Organic modified polymer

• Nonionic

• 40% active content in water

• Solvent and nonylphenol

ethoxylate-free

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Additives for Paper Impregnation

Wetting Agents

Defoamer

Dispersing Agents

TEGOPREN® 5878

TEGO® Surten W 111

TEGO® Antifoam 2360 for

melaminic resins

TEGO® Antifoam 2290 for

Phenolic resins

TEGOMER® DA 640

TEGOMER® DA 850

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