Defoamers. Dispersions & Pigments division Formulation Additives

Transcription

1 Defoamers Dispersions & Pigments division Formulation Additives 1

2 Content Introduction Theory & physical principle Chemistry: water- and solvent-borne systems Selection of products: industrial paints (solvent-borne systems) Selection of products: industrial paints (water-borne systems) Selection of products: architectural paints (water-borne systems) Summary 2

3 Our markets Decorative Coatings Industrial Coatings Automotive Coatings Printing & Packaging 3

4 Our comprehensive product portfolio Dispersing agents Defoamers Rheology modifiers Wetting agents and surface modifiers Film-forming agents

5 Brand portfolio Dispersing agents Water based Dispex /Dispex Ultra Non-aqueous (solvent based) Efka Defoamers Foamaster /FoamStar Efka Rheology modifiers Rheovis (organic) Attagel (clays) Efka Wetting agents and surface modifiers Hydropalat Efka Film-forming agents Loxanol Efka

7 Theory Defoamer benefits Where does foam come from? Which features should a defoamer have? And if we choose the best one? Foam origin Dispersion Pumping & Stirring Application Defoamer requirements Defoaming efficiency Incorporation Long term effect Sufficient compatibility Effects Reduced production time Increased milling efficiency Accurate filling levels Best film appearance 7

8 Theory What is foam? General Rule: Pure liquids, free of surfactants do not foam. Foam is a state of a higher energy level (dispersion of a gas in a liquid). Therefore foam is only stable in systems containing surface active substances (eg. surfactants). 8

9 Theory Definitions The term Foam Control Agent (FCA) is a collective name for: 1. Antifoams are used to prevent foam formation. 2. Defoamers are added to destroy existing foam at the surface. 3. Air release agents remove (micro) air bubbles from the liquid and help them to rise to the surface. Often the differences between these terms are not obvious or unclear. Therefore it is important to understand the requirements and the application. 10

10 Theory Influence on properties Distention Air content Gloss Defoamer Separation Surface tension Film properties (craters, pinholes, fish eyes) 11

11 Theory Compatibility vs. Incompatibility Defoam Optimum compatible incompatible Defects: Haze, crater Compatible / Soluble Foam Incompatible / Insoluble Foam stable 14

13 Defoamer portfolio by chemistry Chemistry Product Range Characteristics Oil based defoamers Foamaster MO universal, classical mineral oil and natural oil based defoamers Silicone defoamers FoamStar SI Efka SI high gloss and industrial coatings, printing inks Emulsion defoamers FoamStar ED universal, easy to incorporate, free of mineral oil (Star-) Polymer-based defoamers Efka PB FoamStar ST high performance Powder defoamers FoamStar PB powder-type products 16

14 Chemistry Defoamers Water borne applications: Mineral oil, white oil, natural oil PolyDiMethylSiloxanes (PDMS) Organically Modified PDMS (polyether) Emulsion (easier to incorporate) and solutions (higher efficiency) Solvent borne applications: Organic polymers like polyethers, polyacrylates, etc. Polydimethylsiloxanes Modified polydimethylsiloxanes (e.g. polyether, alkyl-aryl, etc.) Flourinated silicones, or acrylics 17

15 Chemistry Defoamer actives Possible chemical structures for defoamers are molecules with a low surface tension such as silicone (pure PDMS or modified versions) and mineral oils, fatty acids and fluorocarbons. CH CH CH CH R CF 3 CF 2 CF 2 R Fluorocarbons Fatty acid COOH H C Si O Si O Si O Si CH 3 3 CH CH 3 3 n m Al kyl Polyether mod. Silicone or pure PDMS O C O O C O n H 3 C CH 2 CH CH 2 n CH 3 R 1 O R 3 O CH 2 R 2 R 4 Vinyl and acrylic R Mineral oil 18

17 - activity Positioning Solvent-based and solvent-free systems Coil coating OEM Refinish General industrial Wood UP Epoxy UV Spray - + compatibility + Efka PB 2018N Efka SI 2040 Efka SI 2035 Efka SI 2008 Efka SI 2040 Efka PB 2720 Efka PB 2021 Efka PB 2010 Efka SI 2723 Efka SI 2022 Efka SI 2022 Efka PB 2001 Efka PB 2020 silicone-based silicone free

18 - Defoamers for solvent-based systems Positioning of focus products Coil coating OEM Refinish General industrial Wood UP Epoxy UV compatibility + Efka PB 2018 Efka SI 2028 Efka SI 2040 Efka SI 2035 / Efka SI 2008 Efka SI 2025 Efka PB 2720 Efka PB 2021 Efka SI 2721 Efka SI 2723 Efka PB 2010 Efka SI 2022 Efka PB 2020 / Efka PB 2001 silicone-based polymer-based

19 Efka PB 2010 (Efka 2010) New defoamer for solvent-borne systems Product Silicone free defoamer Suited for primers Suited for pigmented and non pigmented coating systems Patent protected chemistry Origin Developed as a complementary product to the existing Efka PB 2020 Efka PB 2010 provides a higher compatibility (minimized in-can haziness) with most solvent-based binders while leaping a high defoaming performance. 22

20 Efka PB 2010 (Efka 2010) New defoamer for solvent-borne systems High efficient defoamer for solvent-borne coatings (pigmented and non pigmented systems), especially when high transparency / gloss and low haze is required Non/low turbidity/haziness in liquid formulation and after curing Compared to Efka PB 2020 only medium shear forces are needed Excellent compatibility (low sensitive for crater, no impact on orange peel) Suitable for broad range of coating systems: two-component polyurethane coatings nitrocellulose/alkyd lacquers air-drying and baking paints acid-curing coatings cold cured epoxy resin systems Industrial and Automotive solvent-based applications 23

21 Efka PB 2010 (Efka 2010 New defoamer for solvent-borne systems Efka PB 2010 Efka PB 2020 Comp 3 Comp 4 26

22 Efka SI 2040 (Efka 2040) Defoamer for solvent-borne systems Product Silicone based defoamer Suited for airless spray, brush and roller application Suited for pigmented and non pigmented coating systems Efka SI 2040 provides an excellent defoaming effect with most solvent-based binders. Successful at main Marine & Protective coatings paint producers! 27

23 Efka SI 2040 (Efka 2040) Defoamer for solvent-borne systems Highly efficient defoamer for solvent-borne coatings (pigmented and non pigmented systems), Non/low turbidity/haziness in liquid formulation and after curing Can be added prior to processing If post added, care should be taken to ensure uniform distribution Suitable for broad range of coating systems: Air drying systems based on acrylic, vinyl or chlorinated polymers Fast drying industrial finishes based on medium to long oil alkyd resins airdrying and baking paints Alkyd/melamine systems Two-pack epoxy- and polyurethane systems Industrial and Automotive solventbased applications 28

24 Efka SI 2008 (Perenol E 8) Defoamer for solvent-borne systems Product: Chemistry solution of modified silicone compounds Density 0,85-0,88 g/cm³ Solvents MPA/Isoparafinic hydrocarbons Rec. dosage level 0,3-1% on total formulation Flash point 46 C Use: Universal air release agent for thick layer systems like flooring casting and molding based on: - 2-pack epoxies - unsaturated polyesters - 2-pack polyurethanes Deaerating of film thicknesses of more than 1 mm is possible (after curing) Also suitable in thinner layer coatings for airless- spray applications 29

25 Efka SI 2008 (Perenol E 8) Defoamer for solvent-borne systems Perenol E 8 in a 2-pack PUR system: without defoamer Efka SI 2008 (Perenol E 8) and Dispex Ultra FA 4437 (Hydropalat 3037) 100 p Sovermol p Efka SI 2008 / Dispex Ultra FA 4437 (2:1) 5 p Zeolith paste 68 p Isocyanate 30

26 Efka PB 2001 (Perenol E 1) Defoamer for solvent-borne systems Product: Chemistry Density Solvents Rec. dosage level Flash point solution of silicone-free polymers 0,825 g/cm³ hydrocarbon fluids 0,05-0,5% on total formulation >22 C Use: Nitrocellulose lacquers, particularly applied with curtain coaters 1- or 2- pack acid-curing systems Acrylic resin finishes Air drying epoxy resin paints Unsaturated polyesters 2-Pack PUR paints applied by brushing or spraying Especially suitable are combinations of Efka PB 2001 and flow promotors like Efka FL 3740 or FL 3471 in order to improve leveling. 31

27 Efka PB 2001 (Perenol E 1) Defoamer for solvent-borne systems Improvement of levelling by using Perenol-Types in reactive resin systems No additive With 0.3% Efka PB 2001 and 0.3% Efka FL

29 - compatibility + Defoamers for water-based systems Positioning of focus products Interior Exterior Semi gloss High gloss Alkyd emulsions Baking enamels 2 pack polyurethane Pigment concentrates FoamStar ED 2521 Foamaster MO 2134 Foamaster MO 2150 Foamaster NO 2355 FoamStar ED 2523 FoamStar SI 2293 FoamStar SI 2280 Foamaster NO 2306 FoamStar ED 2522 Dehydran SI 2210/2213 FoamStar ST 2438 FoamStar ST 2454 FoamStar SI 2216 FoamStar si 2550 Architectural Industrial / Automotive silicone-based oil or polymer-based

30 FoamStar SI 2550 (Efka 2550) Strong defoamer for water-based coatings Function: defoamer for water based coatings and pigment concentrates Chemical nature: modified polydimethyl siloxane, 100% active Application Fields: all water borne coatings and pigment concentrates Description: FoamStar SI 2550 is a defoamer based on modified polydimethyl siloxane for water-based coating systems. Due to its stability in high shear processing it functions well during the application of paints and lacquers. FoamStar SI 2550 prevents the entrapment of air during processing steps such as grinding, stirring, pumping etc! Caution! It needs high shear forces to be incorporated into the system High efficiency Long term persistency (recommended to be used during milling of WBRMPC/RFPC) Low dosage ( % on total formulation) 36

31 FoamStar SI 2260 (Efka 2560), FoamStar SI 2270 (Efka 2570), FoamStar SI 2280 (Efka 2580) Defoamers for water-based coatings Function: defoamers for water-based coatings and pigment concentrates Chemical nature: modified polydimethyl siloxane, 100% active Application Fields: all water borne coatings and pigment concentrates Description: FoamStar SI 2260/2270/2280 are a family of defoamers based on modified polydimethyl siloxane for water-based coating systems and pigment concentrates. One of the unique properties of this family of defoamers is the ease of incorporation under low shear conditions without causing negative side effects in the final paint film. Another strong property is the high shear stability of these defoamers, which makes them extremely suitable to be used in high shear processes like, grinding, stirring and pumping. High efficiency Ease of incorporation under low shear conditions Stability under high shear conditions Compatibility Low dosage ( 0.1-1% on total formulation)! Interesting! Foamstar SI 2280 is the best in stoving enamels 37

32 FoamStar ED 2522 (Dehydran SE 2) Defoamer emulsion for water-based coatings Chemical nature: Waterbased emulsion of modified polydimethyl siloxane, 20% solids Application Fields: All water-borne coatings (industrial and architectural) Dosage: % on total formulation Description: FoamStar ED 2522 is an emulsion defoamer based on hyper-branched polymers and organo-modified silicones which shows an optimum balance between compatibility and defoaming efficiency/persistency. It is one of our best defoamers and is suitable for all types of aqueous premium paints, clear coats and inks. Excellent defoaming with fast foam knock-down in premium flat-high gloss paints, clear coats and inks Highly compatible, no haze, no fogging Recommended in grind step and in let-down step Excellent long term stability Excellent gloss retention 38

33 FoamStar ST 2438 (Foamstar A 38) Defoamer for water-based coatings Function: defoamer for water based coatings and pigment concentrates Chemical nature: 100%active defoamer compound of modified a polydimethylsiloxane with a hyper-branched star polymer Application Fields: water-borne architectural and industrial coatings Dosage: % on total formulation Description: FoamStar ST 2438 is a 100% silicone-compound combined with a hyper-branched star polymer to deliver fast foam knock down with high efficiency in low to mid PVC paints and coatings. FoamStar ST 2438 shows an excellent long term persistency and is very effective against micro foam. It also is very shear stable and is therfor suitable for processes, where high shear forces are introduced. FoamStar ST 2438 is also VOC-free acc. to EU 2004/42. High efficiency Stability under high shear conditions Low dosage necessary ( % on total formulation) VOC free acc. to EC 2004/42 39

34 FoamStar ST 2438 (Foamstar A 38) Defoamer for water-based coatings Hyperbranched polymer molecule with star shaped structure Foamstar Patented Technology Active Molecule is multifunctional - defoaming - wetting Main benefit: - improved foam knock down 40

35 FoamStar SI 2293 (Dehydran 2293) Defoamer for water-based coatings Chemical nature: solution of modified polydimethyl siloxanes in a VOC-free carrier Application Fields: water-borne architectural paints and industrial paints and clear coats Dosage: % on total formulation Description: FoamStar SI 2293 is a 100% active silicone based defoamer. Due to its outstanding compatibility, it is predominantly suitable for clear coats in wood coating applications as it minimizes cratering and also has little to no influence on gloss. FoamStar SI 2293 is recommended for use in paints and coatings applied by curtain coatings, spraying, dipping, rolling and brushing. FoamStar SI 2293 has a low odour, is VOC-free acc. to both EC 2002/42 and EPA 24 VOC-free version of a product with 15 years proven performance outstanding compatibility combined with good efficiency no influence on gloss VOC free acc. to EC 2004/42 and EPA 24 41

36 Standard Dehydran 1620 Dehydran 1293/ :1 FoamStar A 38 FoamStar SI 2293 (Dehydran 2293) Defoamer for water-based coatings Standard FoamStar FoamStar FoamStar FoamStar FoamStar FoamStar SI 2292 SI 2210 SI 2293 SI 2292 / SI 2210 ST 2454 ST 2438 (1:1) points density points spray (crater) 43

38 - compatibility + Defoamers for water-based systems Positioning of focus products Interior Exterior Semi gloss High gloss Alkyd emulsions Baking enamels 2 pack polyurethane Pigment concentrates FoamStar ED 2521 Foamaster MO 2134 Foamaster MO 2150/S160 Foamaster NO 2355 FoamStar ED 2523 FoamStar SI 2293 FoamStar SI 2280 Foamaster NO 2306 FoamStar ED 2522 Dehydran SI 2210/2213 FoamStar ST 2438 FoamStar MF 324 FoamStar SI 2216 FoamStar si 2550 Architectural Industrial / Automotive silicone-based oil or polymer-based

39 Foamaster Defoamers for architectural coatings Oil type Products Features and Benefits Limitations Application field Foamaster MO 2150 Foamaster MO S160 Foamaster MO 2122 Foamaster MO NDW Foamaster MO NXZ Emulsion paints (flat) Primers Mineral oil Excellent results against macro foam Gloss reduction in high gloss systems Foamaster MO 2111 Foamaster MO 2114 Foamaster MO 2134 Foamaster MO 2135 Foamaster MO 2108 Universal Emulsion paints (from flat to semi-gloss) Primers 47

40 Foamaster Specialty defoamers for architectural Oil type Products Features and Benefits Application field White oil Foamaster WO 2323 Foamaster WO 2350 Foamaster WO 2390 Efficiency similar to defaomers based on mineral oil Odour improvement Several FDA approvals Emulsion paints (from flat to semigloss) Adhesives Monomer stripping in latex manufacturing Native oil Foamaster NO 2306 Mineral oil free and silicone oil free Good efficiency against micro-foam Non dependence to the mineral oil cost Emulsion paints (from flat to semigloss) Foamaster NO 2335 High efficiency Based on natural oil Low S-VOC Flat emulsion paints Adhesives 48

41 Foamaster NO 2335 (Foamaster 350) Specialty defoamer for architectural Mineral oil defoamer Foamaster NO 2335 Highly compatible, no fogging, excellent long term stability Based on renewable oils Low odor, globally VOC-free and low S-VOC Foamaster NO 2335 is designed to be used in paints with pro environmental labeling 49

42 FoamStar Defoamers for architectural coatings Product FoamStar SI 2227 FoamStar SI 2292 FoamStar SI 2293 FoamStar SI 2213 FoamStar SI 2210 Foamstar ST 2438 Chemical Caract. mod. PDMS / oil mod. PDMS mod. PDMS mod. PDMS mod. PDMS Mod. PDMS Special Remarks Blend of different RM Listed in 2002/72/EC Low S-VOC (TÜV test TM-07) Listed in 2002/72/EC VOC free Used in different types of systems (adhesives, UV-curable systems, etc.) Performance Highlights Use in low pigmented emulsion paints High compatibility (minimized risk of cratering) Long-term efficiency, high compatibility & maintain gloss Specially for clear and low pigmented systems Very high efficiency Long term persistancy Solid content (%) (Solvent) 100% 10% (Butylglycol) 100% (solvent free!) 100% 100% contains starmolecule Excellent foam knock down 100% FoamStar SI 2216 / FoamStar SI 2250 mod. PDMS Should be added to the mill base and with high shear forces Specially recommended for pigment concentrates 100% FoamStar SI 2260/2270/2280 mod. PDMS can be added at any stage of the process broad compatibility combined with good efficiency 100% 50

43 FoamStar ST 2438 (Foamstar A 38) Defoamer for architectural coatings Blank Benchmark 1 Benchmark 2 FoamStar ST 2438 FoamStar A 38 at 0.25% in paint has fastest bubble break time compared to current organo-silicone defoamer benchmarks than exceed 300 seconds Fast and efficient foam knock-down in low mid PVC paints, deep tint bases Easy to incorporate, good compatibility No haze, no fogging Excellent long term persistency Effective against microfoam 51

44 Emulsion-based Defoamers for architectural Emulsion type Product Features and Benefits Application field Oil in water Foamaster MO 2121 Easy incorporation Quick foam supression Good cost/efficiency ratio Flat emulsion paints and plaster Easy incorporation Polymer in water FoamStar ED 2521 Highly compatible Good cost/efficiency ratio No odour Emulsion paints (from flat to semi-gloss) Ultra low S-VOC Silicone in water FoamStar ED 2522 Mineral oil free Highly compatible Excellent gloss Easy incorporation Ultra low S-VOC Optimum balance between compatibility and efficiency Premium flat paints Mid-low PVC and clear coats 52

45 FoamStar ED 2521 (Dehydran SE 1) Emulsion-based defoamer Blank Emulsion Defoamer FoamStar ED 2521 Standard MO Defoamer Blank Emulsion Defoamer FoamStar ED 2521 Standard MO Defoamer 53

46 FoamStar ED 2522 (Dehydran SE 2) Emulsion-based defoamer 54

47 BASF starting point formulation, solvent-free based on Acronal S 559 Formulation: 90 H 2 O 3 Pigmentverteiler NL 4 Natriumpolyphosphat, 25% solution 2 NaOH, 20% 3 preservative e.g. Parmetol A Methylcellulose mpas, 2% 2 Foamaster NO Kronos Omyacarb 5 GU 50 Finntalc M 15 2 FoamStar ED Acronal S H 2 O Properties: PVK: appr. 49% Solids: appr. 6% Binder: appr. 16% TiO 2 : appr. 18% ICI: appr. 0,7 P Stormer: appr. 90 KU 55

48 Summary BASF Formulation Additives offers a comprehensive defoamer portfolio for all relevant coating applications. The performance of a defoamer is difficult to predict due to - The variety of raw materials used in a paint formulation - The method of application Always test more then one defoamer! - Broad range in order to get optimum balance between efficiency and compatibility Do not hesitate to ask the experts! 56

49 Summary Focus products PRODUCT SELLING POINTS Information available Efka PB 2010 (Efka 2010) Efka SI 2040 (Efka 2040) Silicone free defoamer, solvent based systems, Good balance compatibility / incompatibility. No haziness in dry film and can Strong silicone based defoamer for broad applications TDS Value proposition TDS, FTIR Efka PB 2001 (Perenol E1) Silicone-free defoamer for non-aqueous systems like 2-Pack Epoxy, PUR, UPE TDS Efka SI 2008 (Perenol E8) Silicone-based defoamer for non-aqueous systems e.g. medium to long oil alkyds, 2-Pack Epoxy, PUR, UPE TDS 57

50 Summary Focus products PRODUCT SELLING POINTS Information available FoamStar SI 2250 (Efka 2550) FoamStar SI 2280 (Efka 2580) FoamStar ED 2521 (Dehydran SE 1) Pigment concentrates. Persistent Pigment concentrates/dispersion. Efficient and compatible For flat to semi flat paints, good alternative to low cost mineral oil defaomers and BYK 1615 and Agitan 100 type products Value proposition Value proposition Presentation, One page promotion FoamStar ED 2522 (Dehydran SE 2) FoamStar SI 2293 (Dehydran 2293) FoamStar ST 2438 (FoamStar A 38) Foamaster NO 2335 (Foamaster 350) High performance silicone based defoamer emulsion, for a wide range of applications, suitable for milling- base and let down Very compatible, for clear coats, predominantly in industrial coatings, Fast foam knock down; for milling base; suitable as trouble shooter For matt to semi matt paints, mineral oil free, based on natural resources. Presentation, One page promotion Presentation, One page promotion One page promotion Presentation, One page promotion 58

51 Defoamer selection chart for architectural paints 59