New Effective Associate Thickener next generation of NiSAT technology

Transcription

1 Carlos Feito Technical Director Elementis Specialties Elementis GmbH - Stolberger Strasse Cologne, Germany New Effective Associate Thickener next generation of NiSAT technology November 2015 Rheology leadership plus so much more... 1

2 Background of the new technology product range development Customer and legislation require new technology paint systems with low emissions. e.g.: Therefore water based systems are based on a broad range of chemistries like: Acrylic, Styrene Acrylic, VAE, Vina-VeoVa, Polyurethane, Alkyd or Hybrid These different technologies could influence the effectiveness of paint thickeners. Professional painters as well as ambitious do-it-yourselfer expect modern paints with workability such as classic solvent borne alkyd systems. 2

3 Viscosity control of Waterborne Coatings by Rheological Additives Inorganic Rheology Modifiers Antisettling Sag control Provide storage stability Polymer Rheology Modifiers Customer Perception of Quality Creamy in-can feel Application Properties Flow/Sag balance Film Build, (Coverage) 2015 Elementis Specialties, Inc. 3

4 Correlation of viscosities, shear rates and product performance Viscosity [Pa.s] Low shear area Brookfield viscosity Krebs Stormer KU viscosity ICI viscosity Mid shear area High shear area Shear rate [1/s] 4

5 Comparison of Thickener Performance in Waterborne Coatings Flow/Leveling Moisture Resistance Production Ease Sag Tolerance Efficiency Paint, Application and Film Properties Formulary Ease Spatter Resistance Cellulosics HASE NiSATs Coverage (Film Build) Color Stability 2015 Elementis Specialties, Inc. 5

6 Nonionic Synthetic Associative Thickeners (NiSAT) Polyether-Polyurethane type Water soluble nonionic polyether backbone ~95 wt% of Polymer Mol. Wts. = 20-50kDa R1 hydrophobic caps 2015 Elementis Specialties, Inc. 6

7 Mechanism of Thickening in Waterborne Systems w/ NiSAT Thickeners Controlled Flocculation of Resin Particles due to adsorption of thickener Latex hydrophobes on to latex particles Latex Latex Surfactant like micellar structures are linked by intermicellar associative bonds These are broken down by shear 2015 Elementis Specialties, Inc. 7

8 Factors Influencing Efficiency of NiSAT Thickeners Surfactants disturb the associative network Low VOC Capable (Low Tg) Resin Technology meant to reduce the need for coalescents stabilizing technologies with increased amounts of surfactants Particle size and polarity of binder Coalescents & non VOC Open Time Extenders effect on the efficiency of NiSATs depending on hydrophilicity 2015 Elementis Specialties, Inc. 8

9 Introduction to the New Hydrophobic Thickener (NHT) Correlation of viscosities, shear rates and product performance Complexity of the rheological additives in formulations NHT key benefits 9

10 1000 Complexity of the rheological additives in the formulation Viscosity [Pa.s] 100 New Technology 10 1 Low shear area Mid shear area High shear area Shear rate [1/s]

11 Key benefits of the new effective thickener Roller spatter resistance Low and mid shear viscosity High shear viscosity Flow and levelling Efficiency Less influence on secondary paint properties the higher the value, the better the performance 11

12 Introduction to the product range NHT 1 NHT 2 12

13 Product properties Properties NHT 1 NHT 2 Type Efficient ICI builder with low and mid shear contribution Efficient ICI builder with low and mid shear contribution % active solids Viscosity, cps <3000 <3000 % VOC* <0.3 % <0.3 % Odour Very low odour Very low odour ph Latex technology Acrylic Styrene Acrylic WB Alkyd VAE Styrene Acrylic VinaVeoVa 13

14 New effective thickener perfectly designed for specific and typical latex Acrylic ~ 0.1 µm Styrene Acrylic ~ µm NHT 1 NHT 2 VinaVeoVa ~ µm VAE ~ µm 14

15 New thickener technology in different latex frame formulations PVC 30% pure Acrylic PVC 50% Styrene Acrylic PVC 50% Vina-VeoVa PVC 50% Vinylacetate/Ethylene (VAE) 15

16 PVC 30 % pure Acrylic 10 2 Pa s 10 1 Rheological Additive NHT 1 NHT 2 Blank Loading [ % ] KU [ Unit ] ICI [ P ] /s 10 3 Shear Rate. 16

17 PVC 50 % Styrene Acrylic 10 2 Pa s 10 1 Rheological Additive NHT 1 NHT 2 Blank Loading [ % ] KU [ Unit ] ICI [ P ] /s Shear Rate.

18 PVC 50 % Vina-VeoVa 10 2 Pa s 10 1 Rheological Additive NHT 1 NHT 2 Blank Loading [ % ] KU [ Unit ] ICI [ P ] /s Shear Rate.

19 PVC 50 % Vinylacetate/Ethylene (VAE) 10 2 Pa s 10 1 Rheological Additive NHT 1 NHT 2 Blank Loading [ % ] KU [ Unit ] ICI [ P ] /s 10 3 Shear Rate. 19

20 Possible savings with the new thickener technology The new thickener technology provide excellent high shear rate viscosity build (ICI)with satisfactory mid-shear contribution for water-borne systems Provides less complexity in formulation and production as it could be used alone instead of a combination of KU and ICI builder Could help to reduce raw material portfolio Depending on latex chemistry savings up to 60 % possible 20

21 1000 Complexity of the rheological additives in the formulation Viscosity [Pa.s] ICI Builder : KU Builder 10:1-7:1 1 Low shear area Mid shear area High shear area Shear rate [1/s] Elementis Specialties, Inc. 21

22 Possible savings with the New Technology 1000 Viscosity [Pa.s] 100 New Technology 10 1 Low shear area Mid shear area High shear area Shear rate [1/s] Provides less complexity in formulation and production as it could be used alone instead of a combination of KU and ICI builder 22

23 NHT 1 versus KU and ICI builder (Acrylic) 10 3 Pa s NHT 1 up to 60% savings in Acrylic Rheological Additive NHT 1 Combination 1 : ICI builder / KU builder Combination 2 : ICI builder / KU builder Loading [ % ] KU [ Unit ] ICI [ P ] / / NHT 1 / Acrylic /s 1,000 Shear Rate. 23

24 NHT 1 application properties - PVC 30%(Acrylic) Rheological Additive Loading Sag resistance [%] [µm] Levelling 0-poor 10-excellent Roller Brush-out Spatter 0-poor 5-excellent NHT Competitor Combination 1: ICI KU Competitor Combination 2: ICI KU NHT 1 provides almost the same application properties than a combination of an ICI and KU builder 24

25 NHT 2 versus KU and ICI builder (VAE) 10 2 Pa s Rheological Additive NHT 1 Combination 3: ICI builder / KU builder Loading [ % ] KU [ Unit ] ICI [ P ] / NHT 2 up to 30% savings in VAE 10-1 NHT 2 / VAE /s 10 3 Shear Rate. 25

26 NHT 2 application properties PVC 50% (VAE) Rheological Additive Loading Sag resistance [%] [µm] Levelling 0-poor 10-excellent Roller Brush-out Spatter 0-poor 5-excellent NHT Competitor Combination 3: ICI KU > RHEOLATE HX 6050 provides noticeably better levelling properties than the combination of an ICI and KU builder 26

27 Less influence on secondary paint parameters The high efficiency if the New Technology allows extremely low loading levels which have consequently a lower influence on second paint properties Overview of tested professional systems: 1C acrylic high gloss clear wood coating Universal self-crosslinking multiphase acrylic dispersion with good balance of hydrophobic and lipophobic properties NHT 1 versus market reference at equal DIN 4mm viscosity 27

28 Viscosity spindle 4 [mpas] 1C acrylic high gloss clear coating - Brookfield viscosity 2.5% 2.0% 2.4% % NHT 1 2.4% Market Reference 1.5% 1.4% % % % Loading level Brookfield speed [rpm] NHT 1 required a lower loading level to achieve a stable DIN 4 cup viscosity of 100 (Blank: 14 ) 28

29 1C acrylic high gloss clear coating-influence on film properties 1.4% NHT 1 2.4% Market Reference 110 Koenig Hardeness 100 Gloss hours 1 week 2 weeks 20 0 NHT 1 shows less influence on secondary paint parameters 29

30 1C acrylic high gloss clear coating-influence on water resistance NHT 1 Competitive Thickener Paint Thicknes 250 µm; Evaluation after 30 minutes testingtime

31 Performance of the New Technology in WB Alkyd technology Description of evaluated formulation: Waterborne High Gloss white Alkyd Paint Based on a medium oil PU-alkyd emulsion designed for the manufacture of air drying water thinnable high gloss top coats Comparison at equal KU viscosity The market reference is in that study is a mixture of a KU and ICI builder 31

32 η [Pa s] Rheogramm - WB Alkyd technology Rheological Loading KU ICI Additive [%] [unit] [P] NHT Competitor Combination 4 ICI KU , Shear Rate [1/s] 0.5% NHT % Combination 1 initial 4 weeks 40 C NHT 1 shows no negative influence on secondary paint parameters and could be used alone 32

33 Brookfield data - WB Alkyd technology Rheological Additive Loading [%] Brookfield viscosity [mpa.s] RVT setup 6 Spin rpm rpm rpm rpm KU [unit ] NHT Competitor Combination 4 ICI KU ICI [P]

34 Application properties - WB Alkyd technology Rheological Additive Loading Sag resistance [%] [µm] Levelling Brushout Surface Blocking defects 0-poor 10-excellent Storage stability NHT Competitor Combination

35 WB Alkyd technology Evaluation of Waterborne Alkyd Paint systems NHT 1 provides Possible complexity reduction Better application properties Less influence on storage stability 35

36 Conclusion for New Thickener Technology Extremely high efficient thickener technology Suitable in a broad range of latex chemistry NHT 1 Depending on latex chemistry savings up to 60 % possible NHT 2 Could help to reduce raw material portfolio NHT provides less influence on secondary paint properties NHT surpasses the performance of the leading Market references in a range of typical latex systems 36

37 Rheology leadership plus so much more ELEMENTIS would like to thank you for your attention!