Novel Formulation Additives for Waterborne Coating Applications

Transcription

1 Novel Formulation Additives for Waterborne Coating Applications Dehydran SE 2 and FoamStar A 38 defoamers DSX 3801 and Rheovis 162 rheology modifiers Sascha Oestreich BASF, Dispersions & Pigments Division, Formulation Additives

2 Novel Formulation Additives for Waterborne Coating Applications Dehydran SE 2 and FoamStar A 38 high performance defoamers Rheovis 162 and DSX 3801: novel associative rheology modifiers Summary 2

3 Dehydran SE 2 and FoamStar A 38 Performance Highlights Dehydran SE 2 Excellent defoaming with fast foam knock-down in premium flat-high gloss paints, clear coats and inks Aqueous defoamer emulsion Highly compatible, no haze, no fogging Recommended in grind step and in let-down step Excellent long term stability Excellent gloss retention FoamStar A 38 Fast and efficient foam knock-down in low mid PVC paints, deep tint bases 100% active defoamer compound Easy to incorporate Good compatibility No haze, no fogging Excellent long term persistency Effective against microfoam Unique combinations of hyper-branched polymers and organo-modified silicones offer optimum balance between compatibility and defoaming efficiency / persistency. 3

4 Dehydran SE 2 and FoamStar A 38 Sustainability Highlights Dehydran SE 2 Does not contain mineral oils Best-in-class with ultra-low SVOC VOC-free acc. to EU 2004/42/EC & US-EPA 24 Low odor Designed to be used in paints with pro-environmental labelling (Blue Angel, Ecolabel, TÜV) FoamStar A 38 VOC-free acc. to EU 2004/42/EC Low odor Designed to be used in paints with pro-environmental labeling (Blue Angel, Ecolabel, German TÜV, Green Seal) 4

5 Dehydran SE 2 and FoamStar A 38 Positioning FoamStar A 38 Dehydran 2293 Dehydran SE 2 Dehydran 1620 Foamaster 8034 Dehydran SE 1 Foamaster 50 80% 80% PVC PVC Range Range 15% 5

6 Dehydran SE 2 and FoamStar A 38 High gloss paint based on alkyd emulsion Influence of defoamer on density of paint after stirring and storage Dosage: 0.3% defoamer, storage: 2 weeks at 40 C 1 Density before storage Density after storage 0,75 0,5 0,25 0 Blank FoamStar A38 Dehydran SE 2 Benchmark 1 Benchmark 2 Benchmark 3 Paints with FoamStar A 38 and Dehydran SE 2 have highest density or lowest foam, before and after storage. 6

7 Dehydran SE 2 and FoamStar A 38 High gloss paint based on alkyd emulsion Compatibility test (drawdown of paint on glass plate) Dosage: 0.3% defoamer, rating of film appearance: 1 = lots of defects, 5 = no defects Blank FoamStar A38 Dehydran SE 2 Benchmark 1 Benchmark 2 Benchmark 3 Paint with Dehydran SE 2 shows superior compatibility compared to benchmarks, no visible impact compared to blank sample. FoamStar A 38 shows good compatibility. 7

8 Dehydran SE 2 and FoamStar A 38 Glossy metal protection paint Influence of defoamer on density of paint after stirring and storage Dosage: 0.3% defoamer, storage: 2 weeks at 40 C 1,4 1,2 1 0,8 0,6 0,4 0,2 0 Density before storage Density after storage Blank Foamstar A38 Dehydran SE 2 Benchmark 1 Benchmark 2 Benchmark 3 Paint with FoamStar A 38 shows best defoaming effect. 8

9 Dehydran SE 2 and FoamStar A 38 Glossy metal protection paint Compatibility test (drawdown of paint on glass plate) Dosage: 0.3% defoamer, rating of film appearance: 1 = lots of defects, 5 = no defects Blank FoamStar A38 Dehydran SE 2 Benchmark 1 Benchmark 2 Benchmark 3 Paints with Dehydran SE 2 or FoamStar A 38 show comparable compatibility vs. Benchmarks. 9

10 Novel Formulation Additives for Waterborne Coating Applications Dehydran SE 2 and FoamStar A 38 high performance defoamers Rheovis 162 and DSX 3801: novel associative rheology modifiers Summary 10

11 DSX 3801 and Rheovis 162 Performance Highlights DSX 3801 New HEUR based rheology modifier Well-balanced mid-shear thickener with improved ICI build at low dosage Improved viscosity drop on tinting Easy handling due to low product viscosity Good scrub and chemical resistance Universality (architectural & industrial applications) Rheovis 162 Novel HASE thickener Outstanding efficiency Less water uptake High yield point Thixotropic flow behavior Excellent sag resistance Excellent balance between sag resistance and leveling For non-dripping paints & stains For spray application 11

12 DSX 3801 and Rheovis 162 Novel Associative Rheology Modifiers Associative thickeners form a so called dynamic physical network between pigments, latices, surfactant micelles and other components of the paint - resulting in the thickening effect. 12

13 DSX 3801 Matt facade paint based on Acronal S 790 Low shear viscosity and high shear viscosity vs. dosage of rheology modifier Dosage (as-is on paint) adjusted to achieve ~ mpa.s low shear viscosity Low shear viscosity [mpa.s] Dosage: 1.0% 1.0% 1.43% 0 DSX 3801 Benchmark 1 Benchmark 2 Low shear viscosity (1 1/s) ICI viscosity ( /s) ICI viscosity [mpa.s] DSX 3801 shows improved ICI viscosity than Benchmarks at equal or lower dosage. 13

14 DSX 3801 High gloss paint based on acrylic emulsion Low shear viscosity and high shear viscosity vs. dosage of rheology modifier Dosage (as-is on paint) adjusted to achieve ~ 2000 mpa s low shear viscosity Low shear viscosity [mpa.s] Dosage: 1.06% 1.22% 2.78% ICI viscosity [mpa.s] 0 DSX 3801 Benchmark 1 Benchmark 2 Low shear viscosity (1 1/s) ICI viscosity ( /s) DSX 3801 shows similar performance to solvent containing Benchmark 1 at 13% lower dosage. To reach the same level of low shear viscosity, more than double amount of Benchmark 2 is needed

15 Rheovis 162 Thickening Mechanism Entanglement of polymer chains Thickening of water phase Viscosity increase in alkaline ph range ph increase ph < 7 ph > 7 15

16 Rheovis 162 Key Properties Rheovis 162 highly efficient thixotropic HASE thickener for non-dripping stains and paints Real thixotropic rheology Excellent balance between sag resistance and leveling Outstanding efficiency Highly recommended for non-dripping stains and paints 16

17 Rheovis 162 Low build stain based on Acronal LR Rheovis 162 Comp. 1 Viscosity [mpas] shear rate s % PU thickener (low shear); 0.5% acrylic thickener 17

18 Summary BASF Formulation Additives offers a strong and comprehensive additive portfolio for the architectural and industrial coatings markets. Dehydran SE 2 and FoamStar A 38 are new defoamers offering an optimum balance between compatibility and defoaming efficiency / persistency. DSX 3801 and Rheovis 162 are novel rheology modifiers with outstanding efficiency and unique rheological properties. 18

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