Fomrez catalyst UL-50

Transcription

1 Technical Data Sheet Fomrez catalyst UL-50 Description Momentive Performance Materials offers the Fomrez line of tin catalysts. This line of world-class organometallic tin(iv) catalysts is one of the broadest available to manufacturers around the world. With our knowledge of polyurethane catalysis and our experience from many years of service in polyurethane applications, we can bring unparalleled expertise to our customers. Basic chemical structure of Tin (IV) Catalysts Organotins are defined as those tin compounds having at least one covalent bond directly to carbon (alkyl group). The particular compounds of interest in this series are the tin (IV) derivatives. The most predominant chemical structure of these tin catalysts is composed of two alkyl groups and (typically) two anion groups bonded to the tin metal. This is illustrated in the following diagram: Where Sn represents the Tin(IV) cation, Alkyl represents an alkyl group, and Anion represents an anion group such as a carboxylate, or mercaptide anion. An overview of the chemical structural relationships of the Fomrez UL-Series tin line is shown in Table 1. The product line is differentiated into three major families based upon the chemical nature of the anion groups. These three major families are: Carboxylates (includes maleate) Mercaptides Thioglycolates (Ester-containing Mercaptides) Table 1. Classification of Fomrez Tin by Alkyl and Anion Groups Anion Group (-R represent alkyl pendant group on anion) Alkyl Group Directly Bonded to Tin Carboxylate -O-(C=O)-R Oxide =O Mercaptide -S-R Methyl UL-28, UL-50 UL-22 UL-54 Butyl SUL-4 SUL-11b UL-1* UL-6* Octyl UL-38, UL-59 UL-32 UL-29 * Not available in Europe Thioglycolate -S-(CH2)- (C=O)- O-R The products range from the high activity catalyst, Fomrez Catalyst UL-28, to the much delayed-in-action, Page 1 of 13

2 Fomrez Catalyst UL-29. This range of activity can offer tremendous versatility, allowing the formulator the ability to tune the reactivity of a system to meet processing requirements for a given application. In summary, Momentive Performance Materials can offer a wide variety of organotin catalysts that fill the needs of many polyurethane applications. Tin Catalysts used in polyurethane applications The primary chemical reactions used in the preparation of most polyurethane elastomers, foams, coatings and sealants/adhesives involve reaction of isocyanates with polyols, amines and/or water. Classically, the polyol (hydroxyl-terminated polyether or polyester) reaction with isocyanates is called the gelling reaction, as it typically represents formation of the high molecular weight polyurethane structure. The reaction of the isocyanate group with the hydroxyl group is illustrated below in Figure 2: Tin catalysts are particularly effective in catalyzing the gelling reaction as shown above. In applications in which polyols and chain extenders or cross-linkers (low molecular weight polyhydroxyl components) are the only reactants, it is possible that organotins could be used as the only catalysts needed to properly control the process. The reaction of the isocyanate with water is classically called the blowing reaction as it represents the reaction of isocyanate and water to form urea (hard segment) and CO2 that is utilized to reduce the density of a foam system. This reaction is illustrated above in Figure 3. When water is added to the system, as in the preparation of low-density flexible foams, tin catalysts are usually used in conjunction with a tertiary amine catalyst. Tertiary amines are known to act in a synergistic manner with tin catalysts, and they also offer the important benefit of being, in general, more specific than tins in catalyzing the reaction of isocyanate with water (i.e., they catalyze the blowing reaction). It is the selection of the proper tin/amine catalyst combination that brings catalytic balance and overall control to this complicated process chemistry, thus allowing the preparation of finished parts or foams. In any given application, the choice of catalyst is usually governed by the need to control the foam rise profile, gellation, and final cure requirements of a given system. Momentive Performance Materials offers the Fomrez tin catalyst line, an extremely broad tin catalyst portfolio, which may allow polyurethane manufacturers the capability to meet the requirements of many demanding polyurethane applications. Carboxylate Tin Catalysts The carboxylate tin catalysts are extremely useful in one-shot and spray elastomer applications. They can also be used in some foam applications in which the hydrolytic stability of the tin catalyst is not of great concern. Fomrez Catalyst SUL-4 (Dibutyltin dilaurate) tin catalyst has been the most widely used tin(iv) catalyst in Page 2 of 13

3 the polyurethane industry for over 35 years. It is widely used in the manufacture of polyether and polyester-based urethane polymers made by one-shot or pre-polymer techniques. Fomrez SUL-4 catalyst is also useful for catalysis of adhesives, sealants and room-temperature-vulcanized (RTV) silicone polymers. This catalyst can be used alone or in combination with standard amine co-catalysts. Although Fomrez Catalyst SUL-4 is a general-purpose catalyst with good catalytic activity, it also has the poorest hydrolysis resistance of the tin catalysts in the Fomrez line. Fomrez Catalyst UL-28 (Dimethyltin dineodecanoate) is the most active catalyst in the Fomrez line, providing very short gel and tack-free times, as well as good solubility in polyurethane systems. Studies in various urethane systems have shown Fomrez Catalyst UL-28 to be almost as active as dibutyltindiacetate (DBTDA), without the acetic acid odor or the corrosiveness usually associated with DBTDA. Fomrez Catalyst UL-28 is much more catalytically active compared to Fomrez Catalyst SUL-4, and has a lower freezing point, as well as slightly better hydrolysis resistance. Fomrez Catalyst UL-28 can be used in many of the same applications as DBTDL, such as fast-cure one-shot and spray elastomer applications, in room-temperaturevulcanized (RTV) silicone polymers or polyurethane coatings. It is particularly useful in catalyzing polyurethane reactions based on aliphatic isocyanates. Fomrez Catalyst UL-38 (Dioctyltin dineodecanoate) has a more moderated activity compared to Fomrez Catalyst SUL-4 tin catalyst. Of the carboxylate tin catalysts, Fomrez Catalyst UL-38 is the most resistant to hydrolysis. Fomrez Catalyst UL-38 has been typically used in one-shot elastomer and some microcellular foam applications requiring longer gel times that allow for improved mold filling. Fomrez Catalyst UL-50 (dimethyltin dioleate) has slightly lower catalytic activity compared to that of Fomrez Catalyst UL-28. Fomrez Catalyst UL-50 is designed to be a more cost-effective catalyst compared to Fomrez Catalyst UL-28, but should be stored above 10ºC to avoid product hazing and freezing. Fomrez Catalyst UL-50 has better hydrolytic stability and lower fugitivity compared to both Fomrez Catalysts UL-28 and SUL-4 that is beneficial for automotive interior applications and is typically used in spray and one-shot elastomer applications. Fomrez Catalyst UL-50 is also an effective catalyst for use with polyurethane systems based on aliphatic isocyanates. Fomrez Catalyst UL-59 (dioctyltin dilaurate) is designed for use in polyurethane elastomer systems to replace DBTDL. Fomrez UL-59 is less active than Fomrez Catalyst SUL-4 and in order to achieve similar reactivity profile it requires about 50-60% higher use level. Tin Oxide Catalyst Fomrez Catalyst SUL-11b (solution of dibutyltin oxide) is often used in polyurethane CASE (coatings, adhesive, sealant, casting elastomer) and one-shot elastomer applications. Fomrez Catalyst SUL-11b is also an extremely efficient catalyst for high performance silicone-based sealants and for esterification reactions. Fomrez SUL-11b tin catalyst is slightly less active than Fomrez Catalyst SUL-4 at equal molar use level. Fomrez Catalyst SUL-11b is especially suitable as a catalyst for silicone and urethane based paint and coating applications, adhesives, sealants and elastomers. Mercaptide Tin Catalysts Mercaptide tin catalysts are excellent candidates to consider to offer the best hydrolysis resistance of the Fomrez tin line. This family of tin catalysts is typically used in water-blown polyurethane foam systems in which the hydrolytic stability of the tin catalyst is important. Fomrez Catalyst UL-22 (Dimethyltin mercaptide) is a much more active analog of Fomrez Catalyst UL-1* for urethane systems and can be used at approximately one-half (½) the use level of Fomrez Catalyst UL-1*. Page 3 of 13

4 Fomrez Catalyst UL-22 has very good hydrolytic stability, making it an excellent choice for fast gel and tack-free time water-blown polyurethane spray foam systems. Fomrez Catalyst UL-1* (Dibutyltin mercaptide) has excellent hydrolytic stability and has been widely used in water-blown systems. It is a good general-purpose catalyst with high catalytic activity. Polyurethane foam systems formulated with Fomrez Catalyst UL-1* can often retain their activity for extended periods in watercontaining systems. Fomrez Catalyst UL-32 (Dioctyltin mercaptide) has the greatest delay-in-action and best hydrolytic stability of the mercaptide tin catalysts. It is an excellent choice for molded water-blown foam systems that require good foam flow, and excellent end-cure. Thioglycolate_Tin_Catalysts The thioglycolate ligands bind to tin via mercaptide groups, imparting improved hydrolytic stability compared to carboxylate tins and the ester-linkage. The thioglycolate ligand improves the solubility of the thioglycolate tin catalysts into more polar or hydrophilic polyols, relative to mercaptide tin catalysts. More importantly, the thioglycolate structure gives a long delay in catalytic initiation, especially at room temperature and process temperatures below 50 C. This delay-in-action property makes the thioglycolate-based tin catalysts excellent for various process applications requiring long gel time or pot life, or a heat-induced catalytic initiation. Fomrez Catalyst UL-6*(Dibutyltin dithioglycolate) is an excellent general-purpose delayed-action tin catalyst. This product allows increased cream time (time before onset of foaming) in foams, and longer pot life at ambient or low temperatures in elastomer formulations. The final cure time at elevated temperature may be nearly equivalent to that obtained using dibutyltindilaurate (standard carboxylate-type tin catalyst that is not delayed-in-action). Fomrez Catalyst UL-6* is useful in all types of urethane applications that require good end-cure but delayed initial activity. Fomrez Catalyst UL-6* is commonly used in one-shot elastomer, microcellular foam, and mechanically frothed foam applications. Fomrez Catalyst UL-29 is commonly used in one-shot elastomer, microcellular foam and mechanically frothed foam applications. Fomrez Catalyst UL-29 (Dioctyltin dithioglycolate) has the longest delayed-action in the Fomrez tin line. It also has the greatest hydrolytic stability of the Fomrez thioglycolate tin catalysts. Fomrez Catalyst UL-29 has a more moderated activity after initiation compared to Fomrez Catalyst UL-6*, allowing for improved flow in molded part applications, or a slower increase of viscosity in elastomer systems. Fomrez Catalyst UL-29 is commonly used in one-shot elastomer, microcellular foam and mechanically frothed foam applications. Fomrez Catalyst UL-54 (Dimethyltin dithioglycolate) is a more active analog of Fomrez Catalyst UL-6*, and provides a powerful endcure at elevated temperatures that is typically better than that obtained using dibutyltindilaurate (DBTDL). Fomrez Catalyst UL-54 is an excellent catalyst for applications that require a long delay in initiation but strong activity once activated. This catalyst can self-activate after a long delay time or can be rapidly initiated once exposed to heat. An example of an application that may benefit by using Fomrez Catalyst UL-54 is a two-component spray coating system that requires long pot life after mixing but fast cure when applied to hot (mold) surfaces or when oven cured. Fomrez Catalyst UL-54 has been used in coating systems (especially heat-activated types), elastomers, and foams. Page 4 of 13

5 Figure 4 shows that the mercaptide tin catalysts, Fomrez Catalysts UL-22, UL-1* and UL-32, are typically the most hydrolytically stable of the various type tin catalysts, and they are often chosen for use in water-blown foam systems. Fomrez Catalyst UL-22 is the most catalytically active and is often used in water-blown spray foams that gel very quickly after application. Fomrez Catalysts UL-1* and UL-32 are more moderated in activity compared to Fomrez Catalyst UL-22 and are often selected for use in water-blown molded foam systems. Carboxylate tin catalysts, Fomrez Catalysts SUL-4, UL-28, UL-50, UL-59 and UL-38, are typically much less hydrolytically stable compared to mercaptide tin catalysts and are often used in elastomer systems and CASE (coatings, adhesives, sealants and casted elatomer) applications that only contain residual amounts of water (mainly from the polyols used). Fomrez Catalyst SUL-11b is a dibutyltinoxide (DBTO) solution. This catalyst has good hydrolytic stability and is often used in elastomer and CASE applications. Thioglycolate tin catalysts, Fomrez Catalysts UL-6*, UL-29 and UL-54 have delayed-action activity (from ambient temperature up to ~45ºC) and typically have good hydrolytic stability (but not quite as good as the mercaptide tin catalysts). They are used in elastomer and CASE applications as well as in many foam applications. *Not available in Europe Fomrez Tin Catalyst activity in a one-shot elastomer system Fomrez Tin Catalyst activity in a one-shot elastomer system Relative catalytic activities in an example polyurethane one-shot elastomer system of each of the Fomrez Tin Catalysts are shown in Figures 5 and 6. Figure 5 shows the temperature exotherm generated versus time after mixing the isocyanate and polyol components. Figure 6 shows the corresponding elastomer viscosity rise due to gelling, versus time. Figure 5: Exotherm temperature versus time of a one-shot polyether-based elastomer system catalyzed with various Fomrez Tin Catalysts Page 5 of 13

6 Figure 6:Viscosity versus time of a one-shote polyethere-based Elastomer system catalyzed with various Fomrez Tin Catalyts The formulation for this example one-shot elastomer system is shown in Table 2, below. The polyol resin-side components were pre-mixed and the concentration of the tin catalyst was adjusted to maintain equal molar amounts of catalyst (3 x 10-5g tin/g resin). The isocyanate and resin-side were mixed at room temperature (~23ºC) for ten seconds and poured into a pint cup containing a thin wire thermocouple mounted above the bottom of the cup and the spindle of a Brookfield viscometer that is centered in the pint cup. The thermocouple was used to measure the elastomer exotherm and the viscometer was used to measure the relative (not absolute due to the thermal mass of the spindle) viscosity rise due to the gellation reactions. Table 2. Example one-shot elastomer system sample formulation Polyol Resin Components % Function OH # Arcol polyol1 94 Soft-segment 34 Ethylene Glycol 6 Hard-segment glycol chain-extender 1808 Fomrez Tin Catalyst varied Catalyst, 3 x 10-5 g Tin/g resin 0 Isocyanate Index %NCO Isonate 143L2 103 Reacts with polyol components Arcol polyol is a product from Bayer Material Science LLC 2 Isonate 143L is a product from The Dow Chemical Company, (uretonimine-modified 4-4 MDI) Note: Typical data are average data and actual values may vary. Page 6 of 13

7 Typical data shall not be used as product specifications. Carboxylate and mercaptide tin catalysts show a relative activity inversely related to the size and hindering effect of the alkyl groups directly-bonded to the tin as shown below: Most noticeable from the reactivity profiles in Figures 5 and 6 is the delay-in-action of the reactivity profiles of the elastomers made using the thioglycolate tin catalysts, Fomrez Catalysts UL-54, UL-6* and UL-29. The delayed-action effect of these thioglycolate tin catalysts gradually diminishes above 40ºC. After activation, and once the exotherm of the polyurethane system exceeds 60ºC, the thioglycolate tin catalysts have activity similar to the other type tin catalysts having the same size alkyl group. Thus when fully activated, the thioglycolate Fomrez tin catalysts follow a similar order in activity as shown below: Methyl (UL-54) >> Butyl (UL-6*) > Octyl (UL-29) Table 4. Fomrez Tin Application guide Page 7 of 13

8 POLYURETHANE APPLICATIONS ELASTOMER SYSTEMS One-shot/Spray Elastomer Carboxylate Tin Oxide Mercaptide Tin Thioglycolate Tin UL-28 UL-50 High-Speed, Fast Gel Time Both SUL-4 UL-38 UL-59 General Purpose, Economic UL-50 SUL-4 Moderated Gelling Activity UL-38, UL-59 Aliphatic Isocyanate Both SUL-4 SUL-11b UL-22 UL-1* UL-32 UL-6* UL-29 Long Pot Life Both UL-54 Heat Activated Spray UL-54 Cast Elastomers Aromatic, Glycol-cured Both Aliphatic, Glycol-cured Both SUL-4 UL-54 COATINGS, SEALANTS, ADHESIVES 2-K Coating, Machine Mix Aromatic Isocyanate All SUL-11b Aliphatic Isocyanate Both SUL-4 2-K Coating, Long Pot Life Aromatic Isocyanate Both Aliphatic Isocyanate UL-54 1-K Moisture Cured Aromatic Isocyanate Both SUL-4 UL-54 Aliphatic Isocyanate Both SUL-4 FOAM SYSTEMS Rigid Foams Water-blown Spray / Fast Gel UL-22 UL-1* Solvent blown Spray All UL-22 UL-1* Heat-Activated / Fast Gel UL-54 Water-blown foam SUL-11b UL-32 Solvent-blown foam UL-38, UL-59 SUL-11b HR Flexible Foam UL-32 Both Microcellular Water-blown UL-38 UL-32 Both Solvent-blown UL-38 UL-32 Both Mechanically Frothed Foam UL-59 Both SILICONE APPLICATIONS Both SUL-4 SUL-11b Page 8 of 13

9 ESTERIFICATION REACTIONS Both SUL-4 SUL-11b Table 5. Typical applications and special properties of Fomrez Tin Catalysts Fomrez Catalyst UL-1* UL-59 SUL-4 UL-6* SUL-11b UL-22 UL-54 UL-28 UL-29 UL-32 UL-38 UL-50 Typical Applications Polyurethane flexible foams (mainly) and elastomers. Microcellular foam (aliphatic isocyanate based systems) Industry-standard catalyst for polyurethane elastomer and also used in polyurethane foams and RTV silicones. Special Properties High hydrolysis resistance. Good catalytic activity. Good stability used with (acid) flame retardants. May be used in PU for medical applications Industry standard polyurethane and silicone catalyst. Cost-effective catalyst. Polyurethane (cavity-filling) foams including microcellular and mechanically Delayed action activity allows increased pot life, and frothed foam, elastomers and CASE improved cavity filling. Good hydrolytic stability. applications. Silicone and polyurethane CASE applications. Esterification catalyst. Polyurethane water-based spray foams. One-shot and spray elastomers. High-density, polyether-based PU foam and RIM elastomer formulations One-shot and spray polyurethane elastomers. Polyurethane CASE applications. RTV silicones Liquid catalyst with properties of solid DBTO. Excellent silicone and esterification catalyst. Good hydrolysis resistance, chemically resistant to (acid) flame retardant, high catalytic activity Delayed action catalyst, extended pot life, improved cavity filling, less prone to winter freezing High activity, good catalyst for low-temperature applications and for use with aliphaticisocyanate-based polyurethane systems. Lower freezing point compared to Fomrez Catalyst UL-50. Polyurethane (cavity-filling) foams Delayed action activity allows increased pot life, and including microcellular and mechanically improved cavity filling. Low freezing point and good frothed foam, elastomers and CASE hydrolytic stability. applications. Polyurethane foams mainly flexible (molded, high-resiliency) and microcellular One-shot polyurethane elastomers, microcellular foams and CASE applications. RTV silicones One-shot and spray elastomer applications. CASE applications. Table 6. Chemical name and physical properties of Fomrez Tin Catalysts Moderated activity for better flow and pot life and excellent hydrolysis resistance. Good stability with flame retardants. Moderated activity for better flow and pot life and better hydrolysis resistance compared to other carboxylate tin catalysts. Excellent catalyst for aliphatic-isocyanate-based polyurethane systems. More cost-effective analog to Fomrez Catalyst UL-28. Page 9 of 13

10 Fomrez Catalyst Catalyst Chemical Specific 25 C UL-1* Dibutyltin dilaurylmercaptide SUL-4 Dibutyltin dilaurate UL-6* SUL-11b UL-22 Dibutyltin bis(2- ethylhexylthioglycolate) Di(n-butyl)tin oxide ( solution in di-c7-11 phthalate) Dimethyltin dilaurylmercaptide Refractive 25 C Freezing Point C ( F) 25 C cst -15 (5) (46) (-13) <-34(-29) (14) 18 8 UL-28 Dimethyltin dineo-decanoate (21) UL-29 Dioctyltin bis(2- ethylhexylthioglycolate) UL-32 Dioctyltin dilaurylmercaptide (-40) (18) UL-38 Dioctyltin dineo-decanoate (21) UL-50 Dimethyltin dioleate (32) UL-54 (Dimethyltin bis(2- ethylhexylthioglycolate)) < -40 (40) UL-59 Dioctyltin dilaurate (0) *Note: Typical data are average data and actual values may vary Typical data shall not be used as product specifications. Table 7. Appearance and handling properties of Fomrez Tin Catalysts 50 C cst Page 10 of 13

11 Fomrez Catalyst UL-1* SUL-4 UL-6* SUL-11b UL-22 UL-28 UL-29 UL-32 UL-38 UL-50 UL-54 UL-59 Appearance Clear to yellow Clear to light amber Clear to light amber Clear pale yellow Clear to light amber Color, Gardner StoreAboveºC (ºF) Note: Typical data are average data and actual values may vary. Typical data shall not be used as product specifications. Store BelowºC Flash (ºF) PointºC Max. 2 4 (40) 50 (122) 185 PMCC 10 (50) 50 (122) 232 COC Max. 2 4 (40) 50 (122) 145 PMCC Max. 4 4 (40) 50 (122) 121 PMCC Max. 2 4 (40) 50 (122) >185 PMCC Max. 4 4 (40) 50 (122) 153 COC Max. 3 4 (40) 50 (122) 196 PMCC Max. 1 4 (40) 50 (122) 205 COC Max. 2 4 (40) 50 (122) 140 PMCC Max (50) 50 (122) >200 PMCC Max. 2 4 (40) 50 (122) 152 PMCC 4 (40) 50 (122) 155 PMCC FlashPointMethod Shelf Life & Storage Recommended storage conditions and useful Shelf Life It is recommended that containers of Fomrez tin catalyst be stored in a dry area near room temperature. Avoid storage at temperatures above 50ºC for extended periods of time. The useful shelf life without significant loss of reactivity is typically two years. Hydrolysis prevention Tin catalysts may experience hydrolysis when exposed to moisture. Carboxylate tin catalysts are more prone to hydrolysis than the mercaptide tin catalysts. To prevent tin catalyst hydrolysis, keep containers sealed until use and store the containers in a dry area. Partially full containers should be tightly resealed after use. If containers are often reopened and used over an extended period of time, a nitrogen blanket purge of the container headspace should be considered. Restoring/melting frozen material Tin catalysts stored below the recommended minimum temperature may become hazy or frozen. It is recommended that the product be allowed to return to room temperature before use. Most of these tin Page 11 of 13

12 catalysts can be thawed at room temperature without detrimental effects to their catalytic activity. Slight heating of Fomrez Catalyst UL-50 may be required if frozen. Patent Status Nothing contained herein shall be construed to imply the nonexistence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of the patent. Product Safety, Handling and Storage Customers should review the latest Safety Data Sheet (SDS) and label for product safety information, safe handling instructions, personal protective equipment if necessary, emergency service contact information, and any special storage conditions required for safety. Momentive Performance Materials (MPM) maintains an around-the-clock emergency service for its products. SDS are available at or, upon request, from any MPM representative. For product storage and handling procedures to maintain the product quality within our stated specifications, please review Certificates of Analysis, which are available in the Order Center. Use of other materials in conjunction with MPM products (for example, primers) may require additional precautions. Please review and follow the safety information provided by the manufacturer of such other materials. Limitations Customers must evaluate Momentive Performance Materials products and make their own determination as to fitness of use in their particular applications. Contact Information For product prices, availability, or order placement, contact our customer service at Momentive.com/CustomerService/ For literature and technical assistance, visit our website at: DISCLAIMER: THE MATERIALS, PRODUCTS AND SERVICES OF MOMENTIVE PERFORMANCE MATERIALS INC. AND ITS SUBSIDIARIES AND AFFILIATES (COLLECTIVELY SUPPLIER ), ARE SOLD SUBJECT TO SUPPLIER S STANDARD CONDITIONS OF SALE, WHICH ARE INCLUDED IN THE APPLICABLE DISTRIBUTOR OR OTHER SALES AGREEMENT, PRINTED ON THE BACK OF ORDER ACKNOWLEDGMENTS AND INVOICES, AND AVAILABLE UPON REQUEST. ALTHOUGH ANY INFORMATION, RECOMMENDATIONS, OR ADVICE CONTAINED HEREIN IS GIVEN IN GOOD FAITH, SUPPLIER MAKES NO WARRANTY OR GUARANTEE, EXPRESS OR IMPLIED, (i) THAT THE RESULTS DESCRIBED HEREIN WILL BE OBTAINED UNDER END-USE CONDITIONS, OR (ii) AS TO THE EFFECTIVENESS OR SAFETY OF ANY DESIGN INCORPORATING ITS PRODUCTS, MATERIALS, SERVICES, RECOMMENDATIONS OR ADVICE. EXCEPT AS PROVIDED IN SUPPLIER S STANDARD CONDITIONS OF SALE, SUPPLIER AND ITS REPRESENTATIVES SHALL IN NO EVENT BE RESPONSIBLE FOR Page 12 of 13

13 ANY LOSS RESULTING FROM ANY USE OF ITS MATERIALS, PRODUCTS OR SERVICES DESCRIBED HEREIN. Each user bears full responsibility for making its own determination as to the suitability of Supplier s materials, services, recommendations, or advice for its own particular use. Each user must identify and perform all tests and analyses necessary to assure that its finished parts incorporating Supplier s products, materials, or services will be safe and suitable for use under end-use conditions. Nothing in this or any other document, nor any oral recommendation or advice, shall be deemed to alter, vary, supersede, or waive any provision of Supplier s standard Conditions of Sale or this Disclaimer, unless any such modification is specifically agreed to in a writing signed by Supplier. No statement contained herein concerning a possible or suggested use of any material, product, service or design is intended, or should be construed, to grant any license under any patent or other intellectual property right of Supplier covering such use or design, or as a recommendation for the use of such material, product, service or design in the infringement of any patent or other intellectual property right. Momentive and the Momentive logo are trademarks of Momentive Performance Materials Inc. Page 13 of 13