PARALOID KM-361 Acrylic Impact Modifier for Window Profiles

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1 PARALOID KM-361 Acrylic Impact Modifier for Window Profiles Description The latest PARALOID KM all acrylic impact modifier has been developed to meet the stringent needs of the PVC profile extrusion industry. PARALOID KM-361 is suitable for use in a wide range of applications where the combination of outstanding natural weathering resistance and high impact strength is required. PARALOID KM-361 is based on our latest acrylic impact modifier technology which is designed to provide an excellent balance of rheological properties in PVC. Chemical/Physical Description PARALOID KM-361 has a core shell structure based on a cross-linked butyl acrylate core with a methyl methacrylate shell. This method of manufacture produces a free flowing white powder with a narrow particle size distribution. Key Properties High impact strength Oustanding natural weatherability Control of melt viscoelasticity o Low stress build-up o Consistent surface finish o Low die swell o Low shrinkage o Reduced or zero plateout Excellent powder properties o Free flowing o Suitable for bulk delivery Processing - Brabender Rheology PARALOID KM-361 promotes the fusion of a PVC formulation to a greater or lesser extent depending of the type of formulation. In comparison with other acrylic impact modifiers, PARALOID KM-361 is in the mid range on a scale between fast and slow fusion. This is demonstrated in the table below which shows the results of a Brabender rheology test using 59 gr. of dry blend, a rotor speed of 50 rpm, and a bowl temperature of 180 C (all modifiers at 6 phr). Fusion Torque Min Torque Equil Torque Fusion Time KM Nm 25.3 Nm 33.3 Nm 64 s. AIM Nm 28.8 Nm 33.0 Nm 55 s. AIM Nm 54.6 Nm 32.4 Nm 68 s. AIM Nm 23.9 Nm 32.4 Nm 71 s.

2 Extrusion Processing In trials conducted on a fully instrumented laboratory conical twin screw extruder, using the same modifiers as in the Brabender rheology test, very little difference in processing conditions was observed. Screw Torque Melt Pressure Melt Temperature KM Amps 21.1 Mpa 179 C AIM Amps 20.5 MPa 179 C AIM Amps 20.1 Mpa 178 C AIM Amps 20.2 Mpa 178 C PARALOID KM-361 has an advantage over other more conventional acrylic impact modifiers in that it minimises the effects of shear stress on the rheology of the PVC. This effect has a number of different benefits including : Low post extrusion shrinkage, Lower or zero levels of plateout, Higher after-aging impact. Impact Properties Impact strength under plane strain conditions (SingleV Notch Charpy Impact) Impact testing under plane strain is a way of measuring the relative brittleness of an extruded PVC profile. The single V notch Charpy test (BS 2782/359) is used to measure impact energy absorption under these stringent conditions. To pass this test, the prepared specimen must absorb a minimum energy of 12kJ/m 2. Tests carried out on extruded PVC modified with PARALOID KM-361.

3 Impact properties under plane stress conditions (0.1 mm DoubleV Notch Charpy ImpactTest) The RAL standard specifies the use of the Double V Notch Charpy test (DIN 53753) to measure the energy absorbed by the PVC specimen under plane stress conditions. The RAL standard requires an energy absorption of 40kJ/m 2 to pass this test. Evaluations carried out using this test procedure demonstrate the good performance of PARALOIDKM-361 compared to conventional and competitive modifiers. Impact properties using the ER standard test EN12608 This test is carried out on samples cut from mill moulded plates that have been made from granulated PVC profile. It is a single V Notch Charpy test and uses specimen bars of 4mm in thickness. Evaluations carried out using this test procedure demonstrate the good performance of PARALOIDKM-361 compared to conventional and competitive modifiers. Profile Gloss and Colour The mechanical properties of profiles are important but the aesthetics of the profile is also of importance in many applications and markets. As a result of the excellent rheological properties described in an earlier section, profile modified with PARALOID KM-361 has good colour control and a relatively high level of gloss. The colour was measured using a CIELAB D65/10 /SCI. COLOUR KM-361 AIM 1 AIM 2 Gloss L* a* b*

4 POWDER CHARACTERISTICS KM-361 Funnel flowability, seconds 15 Minimum ignition energy, mj Minimum ignition temperature, C 420 Layer ignition temperature, C > 400 KST class/value, Bar.m/s. Class 1/120 Particle size distribution On mm, max. 7 On mm, max. 60 Through mm, max. 25 FORMULATIONS PHR S-PVC K Ca/Zn one-pack* 3.5 Titanium dioxide 4 Calcium carbonate 8 PARALOID KM * including process aid Handling Recommendations Under certain conditions, all organic powders can form explosive mixtures with air. PARALOID KM-361 is no different in this respect and has been classified as belonging to the dust explosion class ST1. Risks associated with powders in the class can be mitigated through careful plant design. To ensure safe handling, the appropriate safety regulations should be observed. We recommend that prospective users determine the safe handling procedures necessary for the user's application before manufacturing products. A Material safety Data Sheet (MSDS), outlining hazards and handling methods, is available from your local Rohm and Haas sales office. Plastics Additives NORTH AMERICA Corporate Headquarters Rohm and Haas Company 100 Independence Mall West Philadelphia, Pennsylvania USA Tel: Customer Service: Tel: (Toll-Free from Canada and the USA) Fax (Toll-Free fax from Canada and the USA) Tel: (from Mexico, Central and South America and the Caribbean) Fax: EUROPE ASIA-PACIFIC LATIN AMERICA Rohm and Haas France S.A.S. Rohm and Haas Chemicals Rohm and Haas Quimica Ltda. 185, rue de Bercy Singapore Pte Ltd Av. das Nações Unidas, PARIS Cedex Ayer Merbau Road º andar Jurong Isalnd Edificio WTC - World Trade Center Brooklin Novo

5 France Singapore CEP São Paulo - SP, Brasil Tel: Tel: Tel.: Fax: Fax: Fax: Africa, Iran, Portugal, Spain China, Hong Kong, Taiwan Argentina Tel: (0) Tel: Tel.: Fax: (0) Fax: Fax: Benelux, France, Germany Japan Central America/Caribbean Tel: (0) Tel: Tel.: Fax: (0) Fax: Fax: CIS (Russia), Eastern Korea Chile Countries, Middle East Tel: Tel.: Tel: (0) Fax: Fax: Fax: (0) All Other Countries in APR Tel: Ireland, Nordiska, UK Fax: Colombia Tel: (0) Tel.: Fax (0) Fax: Israel, Netherlands, Turkey Mexico Tel (0) Tel.: Fax (0) Fax: Italy Tel: (0) Fax: (0) Notice: No freedom from any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to Dow or the Company mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. Paraloid. is a trademark of Dow ( Dow ) or an affiliated company of Dow. The suggestions and data in this document are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as conditions and methods of use of our products are beyond our control. The prospective user is responsible for determining whether our products and the information in this document are appropriate for your use, and for ensuring your workplace and disposal practices are in compliance with applicable laws and other governmental requirements. Suggestions for uses of our products, or the inclusion of descriptive material from patents and the citation of specific patents in this document, should not be understood as recommending the use of our products in violation of any patent, or as permission or license to use any patents of Dow or an affiliated company of Dow. * Trademark of Dow ("Dow") or an affiliated company of Dow 07/2008