RHEOLATE HX Innovation Compliance High Performance. Application Leaflet. Key Benefits. Extremely high efficiency

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1 Rheology leadership plus so much more... Application Leaflet October 2014 Key Benefits RHEOLATE HX 6008 Extremely high efficiency Suitable in a broad range of latex chemistries Low influence on final coating properties Extremely high efficient nonionic synthetic associative thickener (NiSAT) for excellent high shear viscosity with additional low and mid-shear viscosity contribution Innovation Compliance High Performance

2 Introduction RHEOLATE HX 6008 is a novel nonionic synthetic associative thickener (NiSAT) which has outstanding rheological properties for aqueous applications. It develops high shear viscosity (ICI) very efficiently, and additionally displays some mid-shear viscosity contribution. RHEOLATE HX 6008 is effective in a broad range of latex chemistries. Key Benefits Extremely high efficient thickener with both ICI and KU properties. Compatible in various resin systems and especially efficient with acrylic and styrene acrylic resins. Excellent balance of sag, flow, and levelling. Minimal effect on final paint properties. EU Ecolabel confirmation available. Chemical and Physical Data Composition Appearance Specfic gravity Active solids (% by weight) Brookfield viscosity (RVT, spindle 4, speed 20 C) Solution of apolyether polyurethane polymer in water Opaque liquid 1.05 g/ml 25% ph 4-6 VOC (ASTM D ) mpa s < 0.2% Incorporation and Levels of use RHEOLATE HX 6008 can be used as supplied or, if necessary, further diluted with water. Addition can take place at any time during the manufacturing process, but incorporation into the mill base before the letdown is recommended. RHEOLATE HX 6008 can be combined with other associative rheological additives, clay based thickeners or cellulosic thickeners for higher packaged viscosity. It is important to assess the effectiveness of RHEOLATE HX 6008 in the entire system, as performance can be affected by other raw material ingredients. Further detailed background information on the technology of nonionic synthetic associative thickeners can be found in the Elementis Specialties RHEOLOGY HANDBOOK. Typical use levels of RHEOLATE HX 6008 are in a range 0.1% to 1.5% (product weight) related to the total system weight. 2

3 Overview of tested paint systems RHEOLATE HX 6008 was evaluated in several paint formulations: Subject: Comparison in binder technologies Pure Acrylic Based Paint (PVC 30%) Page 4 For exterior coatings, plasters and external wall insulation systems and primers Styrene Acrylic based Paint (PVC 50%) Page 6 For interior paints, textured finishes, gloss/satin latex paints, primers and silicate emulsion paints Subject: Complexity in paint formulations Pure Acrylic based Paint (PVC 30%) Page 9 For exterior coatings, plasters and external wall insulation systems and primers Subject: Influence on final coating properties 1C Acrylic High Gloss Clear Wood Coating Page 10 For parquet varnishes, wood stain sealers, MDF, and furniture coatings Waterborne High Gloss White Alkyd Paint Page 12. For high gloss decorative (DIY) paints and for industrial paints 3

4 Efficiency Evaluation in a Pure Acrylic based Paint Pure Acrylic based Paint (PVC 30%) Formulation Test Formulation Emulsion paint PVC 30% pure Acrylic Raw material Weight in Function % Millbase stage Tapwater 7.55 Diluent Add under stirring in the denoted order Supplier NUOSPERSE FX Dispersing agent Elementis Specialties DAPRO DF Defoamer Elementis Specialties Sodium polyphosphate 0.50 Softener BK Giulini Titanium dioxide 4.10 Pigment Kronos International Calcium carbonate, various particle size 21.7 Extender Omya Micro Talc 2.40 Extender Mondo Minerals Aluminium silicate 1.10 Extender Evonik The test formulation was based on an aqueous copolymer emulsion of acrylic/methacrylic acid esters. The APEO-free binder has a solid content of 46%, Tg of 23 C and a particle size of 120 µm. It is commonly used in exterior coatings e.g. for masonry paints containing coalescing agents, deep shade paints, plasters and textured coatings, external wall insulation systems and primers. Grind for 15 min. at 10 m/s. Add and stir for further 10 minutes at low speed DAPRO DF Defoamer Elementis Specialties Tapwater X Diluent Add under stirring Mowiltith LDM Binder Celanese Dowanol DPnB 0.55 Coalescing agent Dow Add and stir slightly for 10 min. Rheological additive(s) X Rheological additive Ammonia Solution w=25% 0.15 ph adjustment Parmetol A In can preservative Schülke&Mayr Loading level comparison at equal ICI viscosity of 2.2P 1% of RHEOLATE HX 6008 was sufficient to obtain the required ICI viscosity of 2.2P measured with an ICI-rheometer. The high efficiency of RHEOLATE HX 6008 required the lowest amount of thickener to obtain the same ICI viscosity of 2.2P. 4

5 Efficiency Evaluation in a Pure Acrylic based Paint Mid shear viscosity build By adjusting the formulations to an equal ICI-viscosity value the resulting Krebs-Stormer viscosity will vary. 1% of RHEOLATE HX 6008 yielded the largest KU contribution and resulted in a ready to apply paint. The Krebs-Stormer viscosities of the paints with reference thickeners were too low for practical use and required additional adjustments with a KU-thickener to increase mid shear viscosity. Rheogram The flow curve of the paint based on RHEOLATE HX 6008 confirmed the additional contribution to the low-mid shear viscosity in comparison to the paints with reference thickeners. 5

6 Efficiency Evaluation in a Styrene Acrylic based Paint Styrene Acrylic based Paint (PVC 50%) Formulation Raw material Emulsion Paint PVC 50% Styrene Acrylic Weight in Function Supplier % Millbase stage Tapwater Diluent Add under stirring in the denoted order Sodium polyphosphate 0.10 Softener BK Giulini NUOSPERSE FX Wetting agent Elementis Specialties DAPRO DF Defoamer Elementis Specialties Titanium dioxide 5.80 Pigment Kronos International Calcium carbonate, particle size various 30.9 Extender Omya Micro Talc 3.40 Extender Mondo Minerals Aluminium silicate 1.50 Extender Evonik Grind for 15 min. at 10 m/s. Add and stir for further 10 minutes at low speed DAPRO FX Coalescing agent Elementis Specialties Acronal S Binder BASF DAPRO DF Defoamer Elementis Specialties Tapwater 9.70-X Diluent Add and stir slightly for 10 min. Rheological additive(s) X Rheological additive Ammonia Solution w=25% 0.20 ph adjustment Parmetol A In can preservative Schülke&Mayr This evaluation was made with Acronal S790. Market feedback confirmed the functionality in this latex technology. The binder is APEO-free, has a solid content of 50%, a MFT of 20 C and a particle size of 100 µm. The binder is generally used for interior paints, textured finishes, gloss/satin latex paints, primers and silicate emulsion paints. It can be suitable for exterior paints, concrete protection coatings and exterior insulation systems. Loading level comparison at equal ICI viscosity of 2.2P Only 1.8 % of RHEOLATE HX 6008 was needed to achieve an ICI-viscosity of 2.2P, which is in this test the lowest required loading level. The reference formulations needed at least 3.2% of thickener in order to achieve the target viscosity. 6

7 Efficiency Evaluation in a Styrene Acrylic based Paint Mid shear viscosity build A Krebs-Stormer viscosity of 90 was obtained with 1.8% of RHEOLATE HX 6008, which represents an acceptable level for application. Rheogram The rheogram shows that RHEOLATE HX 6008 increased the viscosity over the full shear rate range up to 1000 s -1. The reference thickeners in this latex technology yielded lower KU-viscosity values compared to RHEOLATE HX They needed a small adjustment with a second KU-builder to reach workable viscosities. 7

8 Complexitiy Reduction Evaluation One way to control costs in paint production is by reducing the complexity. This can, amongst others, be achieved by the reduction of the number of raw materials that simplifies the formulation. Many formulating practices require a combination of a high shear and a low shear thickener in order to meet a targeted rheological profile. RHEOLATE HX 6008 has the ability to take over the functions of both high shear and a low shear thickener and aids to simplify the paint formulation. To illustrate this property of RHEOLATE HX 6008 we evaluated the replacement of a combination of two thickeners by just RHEOLATE HX 6008 in a PVC 30% acrylic paint. The paints were formulated at equal ICI viscosities of 3 ± 0.2P and equal KU-viscosities of 118 ± 1P. Pure Acrylic based Paint (PVC 30%) Formulation Loading level Rheological Additive KU ICI [unit] [P] RHEOLATE HX Combination Combination The reference formulations did not achieve both ICIand KU-viscosity targets with only one thickener. They required a larger quantity of an ICI-thickener and a small additional amount of KU-builder. With RHEOLATE HX 6008 however, only one thickener was needed to reach both mid and high shear viscosity targets. Moreover, with RHEOLATE HX 6008 the rheological profile was obtained with the highest efficiency, i.e. the lowest total amount of thickener was required. 8

9 Complexitiy Reduction Evaluation Rheogram The rheogram shows that RHEOLATE HX 6008 provided less shear thinning flow characteristics than both formulations with thickener combinations, nevertheless RHEOLATE HX 6008 yielded the same application properties (see table below). Despite the lower viscosity at lower shear rates, the sagging performance of the RHEOLATE HX 6008 based paint is similar to the paints with the thickener combination. Also properties such as levelling, brush -out and roller spattering behaviour were very similar. Differences can be qualified as non significant. Rheological Additive Loading Sag resistance [%] [µm] Levelling Brush-out Roller Spatter 0 - poor 10 excellent 0 poor 5 excellent RHEOLATE HX Combination 1 ICI KU Combination 2 ICI KU

10 Evaluation of the Influence on Final Coating Properties 1C Acrylic High Gloss Clear Wood Coating Formulation Raw material 1 C High performance wood coating (Glossy) Weight in % Function Supplier Alberdingk AC Binder Alberdingk Boley Add under stirring in the denoted order DAPRO DF Defoamer Elementis Specialties DAPRO W Substrate wetting Elementis Specialties Dowanol DPM 4.00 Coalescing agent DOW Dowanol DPnB 5.00 Coalescing agent DOW Rheological additive(s) X Rheological additive Water 5.90-X Diluent Disperse for 10 min. 6 m/s The acrylic binder emulsion is a universal self-crosslinking multiphase acrylic dispersion. The binder has a solid content of 44%, MFT of 50 C and Koenig pendulum hardness of 105. It is commonly used for parquet varnishes, wood stain sealers, concrete floorings, MDF, furniture and general plastics like ABS, PC, etc. Comparison of loading level respectively Brookfield Viscosity at equal formulated DIN 4 cup viscosity Brookfield Viscosity To achieve a stable DIN 4 cup viscosity of 100 seconds, the formulation with RHEOLATE HX 6008 required a significantly lower loading level than the formulation with the reference thickener system. The blank formulation without thickeners had a DIN 4 mm cup viscosity of 14 seconds. At equal DIN 4 cup viscosity, the formulation with RHEOLATE HX 6008 showed higher Brookfield viscosity over the full shear rate range. 10

11 Evaluation of the Influence on Final Coating Properties Influence on film properties The initial hardness of the clear coat containing RHEOLATE HX 6008 was already on a higher level than the reference clear coat and over time the hardness continued to develop much faster. This illustrates that RHEOLATE HX 6008 has limited influence on the primary coating properties. The same trend was found for the obtained gloss. The gloss of the clear coat based on RHEOLATE HX 6008 was much higher. 11

12 Evaluation of the Influence on Final Coating Properties Waterborne High Gloss White Alkyd Paint Formulation Raw material Waterborne High Gloss White Alkyd Paint Weight in Function % Supplier Water 5.00 Diluent NUOSPERSE FX Dispersing agent Elementis Specialties NUOSPERSE FX Dispersing agent Elementis Specialties Kronos Pigment Kronos International DAPRO DF Defoamer Elementis Specialties Disperse 1-5 for 30 minutes at 10 m/sec. tip speed (fines of grind < 10µm) WorleeSol 65R Resin Worlee-Chemie GmbH Propylene glycol 2.10 Solvent Water 4.00 Diluent Add 6-8 under stirring in the denoted order Add 9 14 under stirring slightly for 10 minutes WorleeSol E 150W Resin Worlee-Chemie GmbH Borchi OXY Coat Dryer OMG-Borchers GmbH Rheological additive(s) X Rheological additive DAPRO DF Defoamer Elementis Specialties Water 5.05-X Diluent The main binder, WorleeSol E 150 W, is a waterthinnable polyurethane modified alkydemulsion with a solid content of 40% in water. The alkydresin has an oil content of 40% and an acid number of max. 30. The emulsion is multifunctional applicable. It is especially recommended for high gloss systems in the decorative segment and also for industrial paints. Rheogram Both formulations displayed only marginal differences in the flow characteristics. 12

13 Evaluation of the Influence on Final Coating Properties Brookfield Viscosity Rheological Additive Loading Brookfield viscosity [mpa.s] RVT setup 6 Spin. 6 KU [%] 10 rpm 20 rpm 50 rpm 100 rpm [unit] [P] RHEOLATE HX Combination 1 ICI KU ICI With RHEOLATE HX 6008 as sole thickener a similar Brookfield viscosity was achieved. Rheogram and Storage stability The initial rheograms of the alkyd paints based on RHEOLATE HX 6008 and the reference formulation based on two thickeners were almost identical (bold lines). After storage of the paints for four weeks at 40 C, both paints showed a decrease in viscosity, but the paint based on RHEOLATE HX 6008 showed a smaller viscosity decrease and thus was more stable. Application Properties of high gloss alkyd emulsion paints based on Worleesol E 150W Rheological Additive Loading Sag resistance Levelling Brush-out [%] [µm] 0 - poor 10 excellent Surface defects 0 poor 5 excellent RHEOLATE HX Storage stability Combination 1 ICI KU With RHEOLATE HX 6008 the application performance of a PU-modified alkyd based paint can be improved in terms of sag resistance and brush-out. The paint becomes more robust and shows less sensitivity on the development of surface defects. 13

14 RHEOLATE HX 6008 performance summary RHEOLATE HX 6008 is an extremely high efficient next generation nonionic synthetic associative thickener for water-borne systems that Provides excellent high shear rate viscosity build (ICI) with additional low and mid-shear contribution Provides savings up to 60% of the amount of thickener depending on the latex chemistry Reduces complexity in formulation and production Can help to reduce the number of raw material in the portfolio Has less adverse effects on paint film properties or can even improve them Has an EU Ecolabel confirmation readily available Learn more about our products and visit our website! or us at: Elementis UK Ltd c/o Elementis GmbH Stolberger Strasse Cologne, Germany Tel: Fax: Elementis Specialties, Inc. 469 Old Trenton Road East Windsor, NJ USA Tel: Fax: Elementis Specialties Asia No. 99 Lian Yang Road Songjiang Industrial Zone Shanghai P.R. China Tel: