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New Silicone Foam Control Agents

New Silicone Foam Control Agents
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r SILICONE FOAM CONTROL AGENTS Dow Corning® 71 Additive, Dow Corning® 74 Additive and With the increase in production of waterborne coatings, so do the demands for ever faster production times and application speeds. These pressures intensify an inherent problem with waterborne coatings - FOAM Generation. The new Foam Control Additives from Dow Corning can help you combat the foam effectively and yet is balanced to avoid surface defects like craters and fish eyes. Both Dow Corning9 71 Additive and Dow Corning9 74 Additive can now be used as indirect additives in printing inks and over print varnishes applied to either the food contact or non food contact side of food packaging materials for processing, packaging, holding and transporting of food according to FDA regulation. Dow Corning9 71 Additive and Dow Corning9 74 Additive are also compliant with national legislation in Europe. Paints & Inks

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New Silicone Foam Control Agents for Waterborne Coatings Foam control is a delicate balance between compatibility and killing the bubbles….these new antifoams from Dow Corning offer excellent foam control and optimum compatibility without affecting appearance…. Dow Corning® 71 Additive gives excellent foam control in waterborne overprint varnishes, waterborne parquet lacquers and flexographic inks. Dow Corning® 74 Additive is suitable for waterborne wood coatings and automotive clear base coat formulation. Dow Corning® 75 Additive is suitable for solventless, radiation curing systems and is...

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Dow Corning® 71 Additive Dow Corning® 71 Additive is a 100% active polymeric silicone foam control agent. Suitable for water borne coatings and inks, it gives effective foam control with low tendency to cause surface defects. It contains no hydrophobic particles and is particularly suited for applications where high shear stability and ease of incorporation is needed NEW! The rules and regulations for the use of inks and coatings in contact with food are stringent and can often be a cause of confusion. As a result, many manufactures are opting to use only additives that comply with FDA...

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c) Waterborne Acrylic Flexographic Ink Dow Corning® 71 Additive also proved to effectively resist foaming at lower levels (0.1%) in a waterborne acrylic flexographic ink. After shearing at 2800 rpm for 10 mins, a density ratio of 0.86 was achieved and excellent surface appearance was seen on card (no craters seen). Data below compares density ratios initially and after the ink was aged for 3 months at room temperature, and are shown versus are competitor antifoams (addition levels based on relative % activity in the antifoams tested). Figure 3: Density measurements after stirring aged and...

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d) Waterborne Satin Parquet Lacquer Dow Corning® 71 Additive has been evaluated as a defoamer in various waterborne parquet lacquers and a comparative study with different additives Water based Satin Pacquer Lacquer: Dowanol DPnB Test Method: 1. Additives stirred in using a Perform a dissolver stirring test, Lower Stirring Speed The best test performance in terms of Foam Control and Density after stirring Figure 5: Density versus Appearance, additives at 0.5% Dow Corning® 71 Additive has been tested in-house in many different organic resin binders. The table below shows some examples where...

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Dow Corning® 74 Additive Dow Corning® 74 Additive is a 100% active polymeric silicone foam control agent. It offers effective foam control in a variety of water borne coatings and inks especially in waterborne automotive basecoats and wood coatings. It performs at low concentrations and may be added during the pigment grind or let down stage. NEW! Dow Corning® 74 Additive may now be used in compliant with US FDA 21 CFR 176.210. It is also compliant with national legislation in Europe (BfR 15, Germany and Arrêté du 25 Novembre 1992, France). a) Automotive Waterborne Clear Base Coat Dow...

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Density after stirring Density after stirring Figure 8: Density measurement after stirring aged and unaged wood coating binder Dow Corning® 74 Additive has also been tested in-house in many different organic resin binders. The table below shows some examples where Dow Corning® 74 Additive has been found to give good dofoaming properties with good compatibility. Resin Binder Resin Binder Supplier Alberdingk Boley Alberdingk Boley Johnson Polymer Dow Corning® 75 additive is a 100% active organically modified silicone compound which gives effective foam control in solventless coatings...

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Your Global Connection At home or abroad - wherever your business takes you - you’ll find the product supply, customer service and technical support you need to succeed available locally from Dow Corning. Whether you face a challenge that could benefit from Dow Coming’s international experience, or you need a reliable, local source of supply for innovative solutions, just pick up the phone and call us. To consult Dow Corning web site, type: www.dowcorning.com. DOW CORNING AMERICAS DOW CORNING ASIA DOW CORNING EUROPE North America Dow Corning Corporation Tel: +1 989 496 6000 Fax: +1 989 496...

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