New waxes for powder and wood coatings containing sustainable raw materials

Transcription

1 New waxes for powder and wood coatings containing sustainable raw materials Public ABRAFATI 2013 SAO PAULO Tobias Niederleitner BU Additives BL Waxes Technical Marketing Formulators/Coatings&Inks/ Adhesives

2 2 Content Metallocene Polypropylene wax for powder coatings Sustainable wax additive for powder coatings Comparison Metallocene PP and sustainable source Polysaccharide additive for wood coatings

3 Polypropylene and sustainable material for degassing in powder coatings Public Tobias Niederleitner BU Additives BL Waxes Technical Marketing Formulators/Coatings&Inks/ Adhesives

4 4 MetallocenePolypropylene Description The micronized, Metallocene based PP wax has a mean particle size diameter of 8.0µm. The Metallocene process enables narrow molecular weight distribution with advantageous physical properties when molten like for powder coating applications. Technical Data Drop Point ºC ~ 140 C Acid Number Density at 20ºC 0 mg KOH/g 0,90 g/cm3 Particle Size µm d50 ~ 8.0 d90 ~ 15

5 5 Properties of micronized Metallocene PP 88 % of the particles have a Circularity > 0,9 Circularity of 0,9 Circularity CE Diameter [µm]

6 6 Benefits of Metallocene PP The unique combination in properties is offering a wide spectrum of effects like: anti slip properties adhesion improvement degassing effects increased matting In various powder coating systems.

7 7 Anti slip properties of Metallocene PP in Powder Coatings coefficient of friction Increasing COF with adding PP material 0,9 0,8 Possibility to create anti slip surfaces 0,7 Without wax 0,5% Metallocene PP 1,0% Metallocene PP 2,0% Metallocene PP Conditions: 15D laboratory twin-screw extruder; mass temperature at exit approx. 118 C; torque approx. 60 %; hybrid system (70/30) Measurement based on Internal method

8 8 Adhesion improvement with Metallocene PP without wax: Silicon based sealant was easy to peel of adhesion failure 0,5% PP: only a small piece of the sealant remained adhesion failure 1,0% PP: Sealant was partly destroyed adhesion and cohesion failure 2,0% PP: Sealant was unable to remove cohesion failure

9 9 Metallocene PP degassing effect 0,5 % 1,0% 2,0% 100µm 100µm 100µm pinhole Microscopic pictures show the reduction of pinholes by increasing dosage of PP

10 10 Metallocene PP influence on gloss gloss level Metallocene PP FT wax 20 0 Without wax 0.5% 1,0% 2,0% Conditions: 15D laboratory twin-screw extruder; mass temperature at exit approx. 118 C; torque approx. 60 %; hybrid system (70/30)

11 11 Metallocene PP Benefits increased antislip properties acts as a degassing agent in powder coatings improved adhesion of sealants increased matting Target Markets Powder coatings Cohesion break of silicone sealant

12 12 Sustainable source Description The sustainable source consists of sugar molecule combined with fatty acids. This composition behaves like wax and can be micronized. The mean particle size diameter is about 6.0µm. The low melt viscosity wax shows outstandingly effective properties in powder coating applications. Technical Data Drop Point ºC ~ 130 C Acid Number ca. 8 mg KOH/g Particle Size µm d50 ~ 6.0 d90 ~ 15

13 13 Sustainable source The combination in properties is offering a wide spectrum of effects like: High gloss Excellent degassing effect High water repellence effect In various powder coating systems.

14 14 Sustainable source`s influence on gloss gloss level Without wax PP wax FT wax Amide wax PE wax Sustainable source Conditions: 15D laboratory twin-screw extruder; mass temperature at exit approx. 118 C; torque approx. 60 %; hybrid system (70/30); wax content 2,0 %

15 15 Sustainable source Benefits High gloss acts as a degassing agent in powder coatings High water repellence effect Target Markets Pinholes without using degassing agents No pinholes with 2% sustainable material Powder coatings

16 16 Waxes for degassing effect Polypropylene wax vs Sustainable source matting gloss

17 17 Surface properties Metallocene PP and Sustainable source Determination of surface energy with sessile drop method - Measurement of contact angle - OWRK* analysis to evaluate polar and disperse fraction Conditions: hybrid system (70/30); wax content 2 % Liquids for determination Thiodiglycol Diiodomethane Ethylenglycol Water * Owens, Wendt, Rabel and Kaelble method

18 18 Surface properties Metallocene PP and Sustainable source 40 Surface Energy, Polar and Disperse Fractions 35 Surface Energy [mn/m] Surface Energy Polar Disperse 5 0 Without Wax Amide wax Sustainable source Metallocene PP Silicone Metallocene PP lowers the surface energy Polar and disperse fractions are similar to silicone sealant`s distribution => good adhesion

19 19 Surface properties Metallocene PP and Sustainable source 120 Contact Angle of Water 100 contact angle[ ] Without Wax Ceridust Amide wax 3910 Ceridust Metallocene 6050 PP M Ceridust Sustainable 7820 TP additive Conditions: hybrid system (70/30) wax content 2,0% High contact angle means high water repellence Sustainable source showed the best water repellence

20 20 Metallocene PP vs Sustainable source Metallocene PP Excellent degassing effect For matt surface applications Increased adhesion on the surface Increased coefficient of friction PP based Sustainable source Excellent degassing effect For high gloss applications Increased anti-stick properties Lower coefficient of friction Based on renewable raw materials

21 Polysaccharide additive for wood coatings Public Tobias Niederleitner BU Additives BL Waxes Technical Marketing Formulators/Coatings&Inks/ Adhesives

22 22 What is a Polysaccharide? Polysaccharide consist of many monosaccharide. These monosaccharide are linked with so called glycosidic linkages. There are plenty of different possibilities and combinations. The pictures show just examples of the most common monosaccharide and the 1,4 glycosidic linkage of glucose. Glucose Fructose Polysaccharide Further common monosaccharide (hexose): rhamnose, mannose, galactose, altrose,

23 23 Polysaccharide additive The micronized Poysaccharide is an additive for wood coatings with a mean particle size diameter of approximately 30µm and no melting point. The nature of this micronized Polysaccharide creates a smooth and soft touch surface like untreated wood. With this additive there is no compromise between wood touch and protection by a coating. By adding this Polysaccharide you can increase the coefficient of friction combined with outstanding scratch resistance performance especially in water based formulations.

24 24 Performance of Polysaccharide additive Coefficient Of Friction (COF) Scratch resistance performance [N] 0,8 0,8 0,7 0,6 0,6 0,4 0,5 0,2 0,4 without wax FT Wax PE Wax Montan Wax Modified PE Wax Ceridust Polysaccharide 8090 TP Ceridust Polysaccharide 8090 TP 0,0 without wax FT Wax PE Wax Montan Wax Modified PE Wax Increased coefficient of friction in comparison to standard waxes in a water based Polyurethane lacquer Even with an increased coefficient of friction compared to standard waxes the Polysaccharide showed an absolutely strong scratch resistance performance in a water based PUR system Measurement based on Internal method

25 25 Polysaccharide additive Benefits - natural wood touch surface - increased coefficient of friction - outstanding scratch resistance performance - structured surfaces possible - 100% sustainable raw material - suitable especially for water based formulations

26 26 For additional information please contact us Questions? Antonio Carlos Ferracioli Sales Coordinator LATAM Clariant S.A. Tobias Niederleitner Technical Marketing Waxes Clariant Produkte (Deutschland) GmbH