Additives for Water Based Adhesives - Polymer …

1 Additives for Water Based Adhesives Additives for Water Based Adhesives ABOUT US. Contents 3 About us 4 The advantages of TEGO Antifoam 6 Selecting the right TEGO Antifoam 7 Delivering performance: The properties of TEGO Antifoam EVONIK INTERFACE & PERFORMANCE FACE-TO-FACE PERFORMANCE. We are a global player with a presence We have broad chemical platforms We develop high performance 9 Food contact compliance in local market and offer our customers including siloxanes and organics. solutions Based on consultation proven, reliable product quality and Interfacial phenomena at the surface with our customers. 11 Wetting agents supply security on time and on target. and within the matrix are our expertise Long-term relationships built on trust and can be evaluated by our specialized is the basis of our work. 13 Dispersants Our headquarters is in Germany and test facilities and laboratories.

2 Come and see us. Please address one we have technical centers in North of our colleagues to discuss 14 Rheology Additives America, Europe and Asia. You can also count on our specialists for your needs for the Adhesives market. process knowledge, physicochemical 15 Our expertise expertise, scientific studies and regula- tory knowledge. 2 3. Additives for Water Based Adhesives THE ADVANTAGES OF. TEGO ANTIFOAM. Our TEGO Antifoam products are rolls, the occurrence of foam leads to TEGO Antifoam products are unique. used both in the production of Polymer problems directly influencing the Carefully selected and formulated base dispersions1) as well as in the formula- productivity. Moreover, a strong foam- materials provide excellent foam con- tion of related end products. ing adhesive most likely will not meet trol and maximum compatibility at the the required product specifications same time.

3 The well balanced raw Many aqueous adhesive dispersions (adhesion forces, transparency of the material base leads to a wide range of tend to foam due to their chemical adhesive films or a defect free coating). excellent defoamers, suitable for a composition. The experts differentiate Defoamers are used either to suppress multitude of industry applications. between the creation of macrofoam the formation of foam or to effectively Our antifoams do not adversely affect and microfoam, both of which can be destroy foam bubbles once they are the performance of dispersions and avoided when using products within formed. have long-term stability, providing the TEGO Antifoam range. This enhanced efficiency even after storage foaming behavior can be critical either A very small amount of TEGO Anti- of the formulated dispersions. during the adhesive formulation step foam can not only increase the speed or during adhesive application, such as of yours and your customer's produc- coating or lamination.

4 In fast appli- tion, but also avoid defects and scrap, cation of Adhesives , like with gravure helping to reduce the production costs. 1). Ask us for special information about antifoams for the polymerization process Figure 1: Our Additives are used in the production and formulation of Adhesives . Production Application Benefits of the TEGO Antifoam product range: Polymerization/Stripping Processing/Pumping Formulation Application High efficiency Good handling characteristics Attractive cost / performance ratio Long-term stability of formulated dispersion Emulsifiers & Defoamers Defoamers & Wetting Agents Superior compatibility Broad food contact compliance No negative side effects APEO free 4 5. SELECTING THE RIGHT DELIVERING PERFORMANCE: TEGO ANTIFOAM THE PROPERTIES OF. WE ARE THE FOAM EXPERTS SO YOU DON'T HAVE TO BE. TEGO ANTIFOAM. The foaming tendency of the various help of face to face consultation and the three antifoams to select the ideal pro- OUR ANTIFOAMS OFFER GREAT PERFORMANCE IN.

5 Base resins and especially the surfactants used in these systems require different table of recommended products below, we can create a shortlist of products for duct for your formulation. TERMS OF DEFOAMING AND COMPATIBILITY. antifoams for an optimum level of you. As your formulation certainly is All TEGO Antifoams listed below do efficiency and compatibility. With the unique, we recommend testing two to not contain silicone oil or APEO. Table 1 PERFORMANCE OF TEGO property profile. While you of course (barchart height) and surface appearance ANTIFOAM IN VINYL ACETATE/ want good defoaming performance you in a draw down test (pictures). The ETHYLENE (VAE) EMULSIONS also need sufficient compatibility to avoid TEGO Antifoam products defoam better FORMULATIONS. Based ON APPLICATION Figure 2 represents the most important defects in the final films. The graph re- and are more compatible than the compe- properties of a defoamer for the ideal presents the entrained air by a stirring test tition, evidenced in several studies.

6 Paper, Wood &. Pressure Sensi- tive Adhesives Laminating &. Nonwoven &. PVAc/VAE/. Packaging SBR/NBR. Adhesives Furniture Acrylates Hygiene Building Sealants PVOH. PRODUCT CHEMICAL BASE DELIVERED AS. PU. Figure 2: Antifoam performance in VAE emulsion TEGO Antifoam KS 53 Vegetable oil 100% active U u U U. TEGO Antifoam 2290 Paraffinic oil 100% active u u U U U U. TEGO Antifoam 22911). Paraffinic oil 100% active U u U U U U. TEGO ANTIFOAM D 2315 2). Polyether siloxane 100% active u u U U U 10. Entrained Air [%]. TEGO ANTIFOAM 4-941) Polyether siloxane 40% active emulsion 8. U u U U U U U U U. TEGO ANTIFOAM 4-88 1). Polyether siloxane 40% active emulsion U U u U U U U U U. TEGO ANTIFOAM 2-89 Polyether siloxane 20% active emulsion U U u U U U U U U 6. TEGO ANTIFOAM 1488 Polyether siloxane 20% active emulsion 4. u u u U U U U. TEGO ANTIFOAM 204 Polyether siloxane 20% active emulsion U U.

7 TEGO ANTIFOAM 2-80 Polyether siloxane 20% active emulsion U U. 2. 0. U first recommendation u second recommendation 1) Superior Food Contact status, please refer to table 3 for an overview Competitor 1 Competitor 2 Competitor 3 Competitor 4 TEGO TEGO . Compatibility by 2) Deaerates microfoam draw down test Antifoam 2290 Antifoam 4-94. Follow this link to learn more about our test procedures: 6 7. HOLD DOWN AND KNOCK DOWN. PERFORMANCE Figure 3: Hold down and knock down performance FOOD CONTACT. COMPLIANCE. To evaluate the whole spectrum of defoamer performance we demonstrate Air is bubbled Stop Air Air is stopped through the dispersion to observe the foam a two phase test. In the first 10 minutes, to create foam knock down air is blown into the dispersion through 400. a sintered glass (hold down). Then the 350. airflow is switched off and the foam 300. height is observed (knock down).

8 Volume [ml]. 250. 200. The grey line shows the foaming ten- 150. dency of a competitor. There is a lot of 100. foam in both phases. The orange line 50. represents the excellent performance 0. of TEGO Antifoam 1488 at the same 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20. time [min]. concentration. Even a 10% dilution of Defoamer X active TEGO Antifoam 1488 (1:9). TEGO Antifoam 1488 outperformed TEGO Antifoam 1488. the competition in both phases. During the development of our anti- If the regulation that you need for your On the next page (table 3) is an over- foams, excellent food contact status is application is not mentioned in the view that displays the Food Contact a high priority and we address the fol- TDS (eg. specific FDA, ISEGA, Swiss Status regulation current at the time of lowing standard regulations (table 2). ordinance, GB standards of China) it may printing this brochure.

9 As evaluations be that the compliance to that regulation change from time to time we recom- You will find detailed information about has not been evaluated, yet. If this is the mend to check our website following the the food contact compliance for TEGO case, please contact us with your QR code or URL for the latest status, or STORAGE STABILITY Antifoam products on the respective questions and the regulation you need contact us. An acrylic dispersion including defoam- Figure 4: Antifoam performance after storage Technical Data Sheets (TDS). to fulfill for your application. ers was stored at 40 C for 14 days. The chart (Figure 4) shows the foam height of fresh (grey) and stored (deep purple). 1400. dispersions after 30 minute sintered Table 2: Overview of important food contact regulations glass defoamer test. TEGO Antifoam Foam Height after 30 min testing [ml]. 1200.

10 4-94 outperformed the competition 1000. before and after storage. REGULATION DESCRIPTION. 800. EU Regulation 10/2011 Plastic materials and articles intended for contact with food These graphics represent only a few 600. examples and a general trend. As BfR XIV and XXXVI Polymer dispersions formulations differ widely, the effect 400. FDA Adhesives will be different in the extremes of 200. the spectrum. Please contact us for FDA Resinous and polymeric coatings a recommendation for your system. 0 FDA Paper and paperboard in contact with aqueous and fatty foods % Competitor % TEGO Antifoam 4-94. fresh stored FDA Paper and paperboard in contact with dry food 8 9. Table 3: Food contact status of TEGO Antifoam (at time of printing) WETTING. AGENTS. EU REGULATION. FDA FDA FDA FDA 10/2011. BFR XIV. PRODUCT. TEGO Antifoam KS 53. TEGO Antifoam 2290. TEGO Antifoam 2291. TEGO Antifoam D 2315.