Copyright Dow (1995-2023). Annually we request that you confirm your account is valid and verify your email address to protect you and our interests. Functionality: The functionality of a B-side foam ingredient is the number of isocyanate reactive sites on a molecule. www.autoneum.com. If you select a new delivery address, pricing and availability for items in your cart may no longer be valid. wt. Our family of isocyanates combine hydrogen compounds to create an amazing range of materials. All Rights Reserved. Striving to meet the specific needs of its customers in their local geographic regions, Dow Polyurethanes operates a global network of production sites and systems houses, as well as innovation and service centers. var $ddlEF = $('#ddlInefficiency'); Where X = Equivalent weight of the diisocyanate Conversion to hydroxyl number is accomplished to have for one equivalent of reactive groups. are a family of hydrophobic polyols that improve moisture and chemical resistance in coatings, adhesives, sealants and elastomers for an improvement of up to 50% in water uptake. is used to calculate how many grams of a product needed for one equivalent of reactive groups. x MDI eq. Polyurethane Foam Denitions - Isocyanate Equivalent Weight The OH concentration is measured by the OH value (mg KOH/g sample): Equivalent weight potassium hydroxide equivalent to the hydroxyl content in one gram of polyol or other hydroxyl compound. Dow operates 106 manufacturing sites in 31 countries and employs approximately 35,700 people. Demonstrating polyurethane sustainability and circularity. Let us know how we can better serve you in the future. multiplied by the nominal functionality (fn). wt. Your account number is the Ship-To Number that can be found on a recent invoice. Dow VORASURF polyurethane additives help meet a variety of needs across a wide range of applications. This book describes the chemistry of flexible and viscoelastic polyurethane foams as well as calculations and formulating Dow is working with the entire value chain to embed sustainability throughout a products life cycle by pioneering projects like the RENUVA Mattress Recycling Program which is demonstrating the circularity possibilities of polyurethanes through recycling and re-use. If you do not accept the deployment of cookies or restrict them in any way, you will not be able to use all the interactive functions on our website. It is providing transportation-specific innovation, customized development, application expertise, technical support, and global reach at scale. Through its RENUVA Mattress Recycling Program, Dow aims to reduce this mountain of waste by giving polyurethane (PU) foam from end-of-life mattresses a new life. Building, Construction and Infrastructure, Home Care, Industrial and Institutional Cleaning. Example: The lot analysis for a new batch of polyol indicates a OH Number of 54 and an acid number of 0. BESTER 43CH. This website uses cookies to provide you the best experience. Units For an isocyanate, the reactive group is. $(function () { = (eq.wt.) Copyright 2023 PMA. Click here to begin the process. Our broad range of Dow Isocyanates provide a wide use of applications and solutions, so you are reassured you have the right product. Remember, you can manage cookies in your browsers settings. = (eq.wt.) Using a mass-balance approach, recycled feedstock will be used to produce circular polyurethane-based products that match the performance of existing products while reducing the use of fossil feedstocks. reacting an isocyanate with one or more polyols to form a polyurethane, one Complete testing is recommended priorto the application of the product. Supplier Website Dow Polyurethanes Datasheets for Foams and Foam Materials. Univar Solutions is your source for Dow Polyurethanes and ready to deliver where you need it, when you need it, how you need it. Determinethe required sealant joint sizes once the thermal expansion, substrate tolerancesand point of attachment are known. are useful in the production of high-resiliency, flexible molded foams and can be used to formulate coatings, adhesives, sealants and elastomers. X = 175 pbw 490)] + (20 45) + (0.15 9)} The business imperative to address environmental, societal, and regulatory challenges is driving a shift away from business-as-usual in the polyurethane industry to more agile and sustainable processes and technologies. -N=C=O (NCO), and its concentration is measured by weight percent NCO. wt.) Dow (NYSE: DOW) combines global breadth, asset integration and scale, focused innovation and leading business positions to achieve profitable growth. Our broad range of Dow Isocyanates provide a wide use of applications and solutions, so you are reassured you have the right product. Assumptions for simplifying the calculations are also not consistent. of ethylene glycol = [56,100 1,810] x 2 = 62.0 g/mol Thisis an estimate and you should evaluate the compatibility ofsilicone sealants and primers from Dow on each of your particular project needs andsubstrates. The Companys ambition is to become the most innovative, customer centric, inclusive and sustainable materials science company, with a purpose to deliver a sustainable future for the world through our materials science expertise and collaboration with our partners. }); of any triol = [56,100 OH value] x 3 g/mol Example: Bucket wt. Complete the following form to request a formulation. SOLUTIONS Our tool helps you find the amount of sealant (and the equivalent in tubes) for your project. For an isocyanate, the reactive 4.5 Gal. Cartridge wt.) Chemical Sourcing . Dow Answer Center-PU Calculations PU Calculation University Andhra University Course Chemistry (CHEM 321) Academic year2012/2013 Helpful? Note:Note: If you do not receive the confirmation message within a few minutes of submitting this form then please check your Spam or Bulk E-Mail folder. Therefore, pricing and availability will be revalidated the next time you visit your cart. Different grades of propylene glycol meanwhile are used in a variety of industries. is commonly referred to as the index. polyol B) number of OH groups, you have a stoichiometric NCO : OH ratio of 1.0. In collaboration with Dow, our valued partner, we have reached this significant milestone of a product design which creates a circular economy. This ratio Copyright Dow (1995-2023). have for one equivalent of reactive groups. About Adient Over two half days on March 22 and 23, Dows Shaping the Future with Polyurethanes virtual event will address the latest industry trends, share insights, strategies and opportunities that will benefit the entire polyurethanes value chain. of any diol = [56,100 OH value] x 2 g/mol 10% These calculators are used to calculate how much sealant is necessary. NCO group reacts with one OH group. Guide to urethane calculations. We request that you confirm your website account is valid and verify your email address. In order to determine the amount of MDI that is required to react with any given polyol blend, the desired index (commonly 1.0) must be known, as well as the MDI equivalent weight (MDI eq. Consulting . Dow Polyurethanes $unit.val($ddlUnit.val()); Adient, a market leader for seating in the automotive sector, and Autoneum, the leading acoustics and thermal management supplier, are partnering with Dow to pioneer the use of SPECFLEX C and VORANOL C. We are more than delighted to present this solution, which significantly raises the sustainability of seating systems. Dow Polyols combined with isocyanates and other additives make creating polyurethane innovations more durable and flexible, no matter the application. The weight of a compound per reactive site. Our tool helps you find the amount of sealant (and the equivalent in tubes) for your project. Structural sealants from Dow can supportthe weight of the panel or glass when used within the guidelines. Some manufacturers specify this number directly and others give the percent NCO by weight (isocyanates) or the hydroxyl number in g-OH/g (polymer resins). Responding to this need, Dow is working with partners from across the value chain to create innovative polyurethane-based solutions shaped by digitalization and sustainability. If the acid number is larger than about 1.0, it should be factored into the above equation. When an isocyanate is reacted with one or more polyols, one NCO group reacts with one OH group. 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Answer: If I were given a random B-side; that is, a blend of two or more polyols, chain extender(s), blowing agent, catalyst package (front & back end), etc., the first thing that I'd need to do is establish the hydroxyl value (OH value, or OHV). Food-graded materials are used as chemicals inpharmaceutical industry. If you do not accept the deployment of cookies or restrict them in any way, you will not be able to use all the interactive functions on our website. This platform is also an example of Dows efforts to accelerate the adoption of novel digital technologies and find agile approaches to doing business in the rapidly-evolving business environment we find ourselves in.. Bucket factored into the above equation. Dow operates 106 manufacturing sites in 31 countries and employs approximately 35,700 people. Please login or reset your password. All Rights Reserved. Equivalent Weight of a Polyol Blend: For foam systems based on a blend of polyols, the net equivalent weight can be calculated by using JavaScript seems to be disabled in your browser. Key Benefits of Polyurethane Additives Market Research: - Industry drivers, restraints, and opportunities covered in the study Recent industry trends and developments Example: mol. wt.) 15% Together we can unlock the full potential of polyurethanes to deliver solutions that shape not only the way we work but also the way we live. For polyols, an average Recall that the recommended seam width for sealants - 6 mm (0.23 in), the maximum-optimal - 12 mm (0.46 in), the ratio of seam width to depth to 12 mm (0.46 in)- 1 to 1, over 12 mm (>0.46 in) - 2 to 1, but in different manufacturers and sealant types parameters may differ in higher or lower. Sign in with your account details to get access to our exclusive content. Discover our wide range of Dow polyols to find the right product. By clicking the Accept button below, you are consenting to receive and store cookies from our site. 2 Gal. Example: Determine the amount of primer you may needfor your project. Dows portfolio of plastics, industrial intermediates, coatings and silicones businesses delivers a broad range of differentiated science-based products and solutions for its customers in high-growth market segments, such as packaging, infrastructure, mobility and consumer care. Polyurethanes Polyurethanes Light and Efficient Versatile plastics for wide-ranging applications With over 50 years of industry experience, our broad portfolio of isocyanates, polyols, polyurethane additives, surfactants, and polyurethane systems offer unparalled quality. NCO. To accelerate the digitalization of its business, Dow has embarked on an ambitious digitalization journey. How is digitalization changing the way we work together? All Rights Reserved. to react with a given polyol blend, you must know the desired index (often 1.0), HORGEN, SWITZERLAND - MARCH 15, 2021 - Dow Polyurethanes, a business division of Dow (NYSE: DOW), is accelerating the digitalization of its business and advancing the development of sustainable technologies to meet long-term market needs.As part of this approach, industry experts and partners will join Dow to discuss trends, industry insights, and opportunities in an upcoming virtual event . We request that you confirm your account is valid and verify your email address protect..., flexible molded Foams and can be used to calculate how many grams of a product needed for one of! Help meet a variety of industries employs approximately 35,700 people the equivalent in tubes ) for your project to coatings. With Dow, our valued partner, we have reached this significant milestone of a B-side foam ingredient is number... 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