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1 EuropeBASF SEHome Care & Formulation TechnologiesEuropeCarl-Bosch-Stra e 3867056 Ludwigshafen GermanyPhone: +49 621 60-0 Fax: +49 621 60-42525e-mail: europe GmbHMaarweg 163/16550825 K ln GermanyPhone: +49 221 95464-0 You will find further European contacts AmericaBASF Corporation100 Campus Drive07932 Florham Park, NJ USAP hone: 800 526-1072+1 973 245-6000 Fax: +1 973 245-6002e-mail: AmericaBASF Faria Lima, 3600/362404538-132 S o Paulo SP BrazilPhone: +55 11 3043-2233 Fax: +55 11 3043-6989e-mail: PacificBASF East Asia Regional Headquarters Floor, Jardine House1 Connaught Place Central Hong Kong ChinaPhone: +852 273 10111 Fax: +852 273 49631e-mail: know of no ill effects that could have resulted from using our prod-ucts for the purpose for which they are intended and from processingthem in accordance with current practice.

2 According to the experience we have gained up to now and other information at our disposal, ourproducts do not exert any harmful effects on health, provided that theyare used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our safety data sheet are about the classification and labeling of our products and furtheradvice on safe handling are contained in the current safety data document, or any answers or information provided herein by BASF,does not constitute a legally binding obligation of BASF. While thedescriptions, designs, data and information contained herein are pre-sented in good faith and believed to be accurate, it is provided for yourguidance only.

3 Because many factors may affect processing or applica-tion/use, we recommend that you make tests to determine the suitabilityof a product for your particular purpose prior to use. It does not relieveour customers from the obligation to perform a full inspection of the products upon delivery or any other obligation. NO WARRANTIES OFANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIESOF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATAOR INFORMATION SET FORTH, OR THAT THE PRODUCTS, DESIGNS,DATA OR INFORMATION MAY BE USED WITHOUT INFRINGING THEINTELLECTUAL PROPERTY RIGHTS OF OTHERS. IN NO CASE SHALLTHE DESCRIPTIONS, INFORMATION, DATA OR DESIGNS PROVIDED BECONSIDERED A PART OF OUR TERMS AND CONDITIONS OF superseedes EMV 0104-00e dated Chemical Solutions for Emulsion PolymerizationBASF s Care Chemicals for Emulsion PolymerizationPerformance, safety, reliability and sustainable solutions are essential for the Emulsion Polymerization industry.

4 To meet these tough challenges BASF offers a range of industry-proven produce innovative raw materials based on BASF s expertise in the manufacture of performance chemicals, process understanding and specific knowledge of market needs and legal PolymerizationAt BASF we use our know-how to deliver high performanceproducts, of consistent high quality, to customers in the Emulsion Polymerization industry. EmulsionPolymerization is a complex technology employed to produce a variety of polymer dispersions whichare then utilized in a variety of applications. BASF surfactants and additives are the key to:Reliable polymer dispersion manufactureControl of particle size and stability during polymerizationPost-polymerization stabilization of dispersionsMeeting legal and market needs This provides the basis for the long-term success of you and your s because at BASF, we create SEHome Care & Formulation TechnologiesEuropeCarl-Bosch-Stra e 3867056 Ludwigshafen GermanyPhone: +49 621 60-0 Fax: +49 621 60-42525e-mail: europe GmbHMaarweg 163/16550825 K ln GermanyPhone: +49 221 95464-0 You will find further European contacts AmericaBASF Corporation100 Campus Drive07932 Florham Park, NJ USAP hone: 800 526-1072+1 973 245-6000 Fax.

5 +1 973 245-6002e-mail: AmericaBASF Faria Lima, 3600/362404538-132 S o Paulo SP BrazilPhone: +55 11 3043-2233 Fax: +55 11 3043-6989e-mail: PacificBASF East Asia Regional Headquarters Floor, Jardine House1 Connaught Place Central Hong Kong ChinaPhone: +852 273 10111 Fax: +852 273 49631e-mail: know of no ill effects that could have resulted from using our prod-ucts for the purpose for which they are intended and from processingthem in accordance with current practice. According to the experience we have gained up to now and other information at our disposal, ourproducts do not exert any harmful effects on health, provided that theyare used properly, due attention is given to the precautions necessary for handling chemicals, and the information and advice given in our safety data sheet are about the classification and labeling of our products and furtheradvice on safe handling are contained in the current safety data document, or any answers or information provided herein by BASF,does not constitute a legally binding obligation of BASF.

6 While thedescriptions, designs, data and information contained herein are pre-sented in good faith and believed to be accurate, it is provided for yourguidance only. Because many factors may affect processing or applica-tion/use, we recommend that you make tests to determine the suitabilityof a product for your particular purpose prior to use. It does not relieveour customers from the obligation to perform a full inspection of the products upon delivery or any other obligation. NO WARRANTIES OFANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIESOF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATAOR INFORMATION SET FORTH, OR THAT THE PRODUCTS, DESIGNS,DATA OR INFORMATION MAY BE USED WITHOUT INFRINGING THEINTELLECTUAL PROPERTY RIGHTS OF OTHERS.

7 IN NO CASE SHALLTHE DESCRIPTIONS, INFORMATION, DATA OR DESIGNS PROVIDED BECONSIDERED A PART OF OUR TERMS AND CONDITIONS OF superseedes EMV 0104-00e dated Chemical Solutions for Emulsion PolymerisationAppendix A to 08_120401e-00 PortfolioEmulsion PolymerizationEmulsion Polymerization Product PortfolioProducts for emulsion polymerization in process- control and post-stabilization: Disponil , Emulan , Lutensol and Pluronic .Surfactants are used in a very wide variety of applications on account of their ability to reduce surface tension. Apart from the main surfactant application areas in detergents, cleaners and cosmetics, there are many more technical applications, for example in the production of leather, paper, textiles, printing inks and coatings.

8 A very special area of application for surfactants is as emulsifiers in aqueous emulsion polymerization polymerization is a process that is used to manufacture polymer dispersions, such as homopoly-mers and copolymers of acrylic esters, styrene and vinyl acetate, and plastics such as E-PVC, PVC microsuspen-sions and synthetic rubber. In this process, the mono-mers which are usually insoluble in water are finely dispersed in the continuous phase, in this case water, by stirring. The aqueous phase contains one or more emulsifiers, usually at a concentration above the critical micelle concentration (CMC). This causes micelles to form that make it possible to solubilize the monomers. The polymerization process is started by adding a water-soluble initiator, and polymer chains are formed in the micelles during the course of the have an important part to play in the manufacture of polymer dispersions, and they also have a substantial influence on the performance characteristics of the final formulated product.

9 Polymer dispersions are typically used in the coatings industry, in papermaking and paper coating, in adhesives and in the textile, leather and construction properties of dispersions manufactured by emulsion polymerization are determined by the choice and mixtures of the various monomers, but these properties are also influenced to a large extent by the choice of emulsifiers and their quality. BASF s dedicated range of products for manufacturing polymer dispersions consists of a broad spectrum of surfactants for use in classical and modern latex play two decisive roles in polymerization processes. One is to stabilize the monomer droplets during the manufacturing process and the other is to stabilize the cured polymer particles in the finished latex.

10 However, the main role of surfactants is to form the micelles that enable the polymerization processes to take place. Anionic emulsifiers form micelles with a spherical structure in aqueous solutions. The free-radical polymer-ization reaction takes place in these micelles, which take on the function of a mini-reactor . The monomer reacts with the water-soluble initiator to form free radicals and diffuses into the micelles, where further chain propagation takes place. The presence of a large number of emulsifier micelles in parallel creates a series of enclosed spaces in which the polymer particles gradually grow as the reaction progresses. nm5 nmMicelleSwollen micelleInitiator moleculeMonomer moleculeSurfactant moleculeLatex particle One layer viewMonomer solubilisationin the micelleMonomer dropletPolymer103 nm102 nmSchematic diagram of reaction = Registered trademark of BASF2 MMMMMMMMMVan der Waals attractionNonionic surfactantNegative potentialCationMMMMMMMMMVan der Waals attractionNonionic surfactantNegative potentialSteric stabilizationCationElectrostatic stabilization and steric hindrance of latex particlesGenerally speaking, the amount of emulsifier used in the polymerization process is sufficient to enable high-quality polymer dispersions to be manufactured that do not contain any coagulated solids.