Re: Polyurethanes Coatings Adhesives And Sealants Pdf Free
Anastacia Iacono
Polyurethane and polyurea are the materials of choice to meet the wide-ranging demands from the extensive list of CASE applications. Preferred for their excellent toughness and inherent flexibility - even at low temperatures - polyurethanes offer smooth durable finishes and superior protection against abrasion, chemicals and other environmental influences. Also suitable for a broad spectrum of substrates, polyurethanes provide performance advantages in structural adhesives, especially when bonding flexible materials. As global awareness of resource efficiency and sustainability intensifies, the capabilities of (reinforced) polyurethanes help to push the boundaries of more lightweight and durable solutions. With a unique portfolio of additives and a deep understanding of polyurethane chemistry developed over many decades, we have the experience and expertise to help you optimize your formulations and meet the challenges of today, and those of tomorrow.
Our POLYCAT, DABCO, and KOSMOS amine and metal catalysts help you tailor reaction profiles to meet your individual needs by controlling pot life, supporting the right hardness build-up and green strength, and shortening return-to-service times. For delayed-action or snap-cure requirements, we have specifically developed a range of thermo-activated high-performance catalysts. For emission-critical applications such as automotive interiors, our innovative reactive amine catalysts are the additives of choice. Dedicated to promote sustainability, our solutions provide formulators with many alternatives to mercury and other hazardous substances.
In the formulation of high-performance polyurea and polyurea-hybrid systems, our VERSALINK diamine curatives and chain extenders offer superior physical properties and help to significantly extended pot life times.
Polyurethane coatings are applied to products to improve their appearance and lifespan. On cars, polyurethane coatings give the exterior a high gloss and improved color retention, while offering improved scratch- and corrosion-resistance.
Other types of polyurethane coatings are used in construction, where building floors, steel trusses and concrete supports are spray-coated to make them more durable and less costly to maintain. This coating, for example, makes a suspension bridge easier to clean, helps to keep its support beams from rusting, and improves its appearance even from a great distance.
Polyurethane adhesives and sealants provide strong bonding and tight seals in a variety of applications. Polyurethane adhesives provide the advantage of a rapid development of "green strength," where the adhesive provides an initial bond before fully curing. This reduces the need for clamping and holding materials, which may help cut costs and increase manufacturing and construction flexibility. Since polyurethane chemistry is so versatile, custom adhesives and sealants displaying a wide variety of chemical and physical properties can be manufactured.
Polyurethane adhesives are used in the assembly of shoes, automotive interiors, windshield bonding and as textile laminates. Conveyor belts are usually closed using polyurethane adhesives, and polyurethane binders are mixed with wood chips or saw dust to form fiberboard. Polyurethane sealants are used in road repair, plumbing, construction and anywhere else a high-strength, water-resistant seal is needed.
Polyurethane sealants provide excellent stress recovery to retain shape after being bent or pulled, fast curing rates and even adherence to non-primed concrete. Polyurethane adhesives and sealants can also be painted to match the surrounding surfaces, while some bonding agents cannot be painted.
Polyurethane elastomers are rubber-like materials that can be created with a wide variety of properties and molded into almost any shape. Depending on the intended use, polyurethane elastomers can provide resistance to:
The low weight of elastomers and their machinability, make elastomers a great choice for dozens of applications. Plus, polyurethane elastomers easily return to their original shape after stressed (i.e., compressed, bent or stretched).
Polyurethane elastomers can be used virtually everywhere. Snowplow blades are made with polyurethane to reduce road damage caused by metal scraping the roads. Wheels for shopping carts, skateboards, roller coasters, and heavy trash containers are all produced from polyurethane, due to its high load-bearing capacity and abrasion resistance. And since polyurethane elastomers can be so easily machined, they can be molded and processed for custom uses such as valves, snowblower augers, balls, and factory fixtures.
2005-2024 American Chemistry Council, Inc. The ACC mark, Responsible Care, the hands logo trademark, CHEMTREC, TRANSCAER, and americanchemistry.com are registered service marks of the American Chemistry Council, Inc.
We use cookies to personalize content and ads, to provide social media features, and to analyze our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
CAPA 2100 is a 1000MW Polycaprolactone polyol diol, initiated with neopentyl glycol (NEO). CAPA 2100 is suitable for use in polyurethane adhesives, coatings, sealants, and elastomers. CAPA 2100 is also suitable for use as a resin intermediate
CAPA 2302A is a 3000 MW polycaprolactone diol initiated with 1,4-butanediol (BDO). CAPA 2302A was specifically designed for the production of polyurethane elastomers with high tear strength. Additionally, CAPA 2302A is suitable for use in polyurethane adhesives, coatings, and sealants. Premium grade with enhanced hydrolytic stability due to extremely low acid value.
The Purmol product line has a wide variety of uses. While many current applications are based on polyurethane and other plastics, Purmol powders can be used in numerous formulations where selective adsorption of small polar molecules is required within a liquid or solid medium. Its fine particle size ensures intimate mixing and excellent dispersion.
Polyurethanes are formed by the reaction between isocyanates and polyols. Any trace amount of water will react with the isocyanate component to form CO2 gas (foaming). This reaction results in bubbling, which is undesirable in many coating applications. Purmol powder will adsorb water without interacting with solvents or other components, thus eliminating CO2 formation and resulting in a smooth final product surface.
Aluminum paints and zinc-rich primers are susceptible to moisture attraction along with any other pigments or fillers used. Purmol adsorbents act as a desiccant to help ensure formulation consistency performance for these applications.
Purmol powder is used in the polyurethane foams industry as a limited additive to help control CO2 gas formation. It can be used to reduce the amount of foaming for applications requiring a more controlled foaming reaction.
Let our technical service experts and their decades of experience guide you through product selection and provide application specific technical advice. Our experienced team and quality products will help you run reliably, efficiently and predictably.
4A is the sodium form of the type A zeolite molecular sieve and is widely used as a general purpose drying agent. Under certain conditions, it can also be used for removal of ammonia, alcohols, carbon dioxide, H2S and other specific molecules.
5A is the calcium-exchanged form of the type A zeolite molecular sieve and is primarily used for removing carbon dioxide, carbon monoxide, alcohols and other oxygenates, hydrogen sulfide, methyl and ethyl mercaptans, and others.
Purmol is an excellent moisture scavenger for polyurethanes, zinc rich primers, aluminum-pigmented coatings, and polysulfide systems.Purmol is also used in applications where sequestration of residual moisture is essential, such as warm edge spacers used in insulated glass and in packaging applications where even small amounts of moisture can degrade or shorten the shelf life of a product.
Purmol adsorbents are synthetic zeolites in powder form with a complex alkali aluminosilicate structure. This structure is very open in nature and contains pores of a regular and precisely defined size. This allows for a selective adsorption of molecules based on molecular size and polarity.
Purmol 3ST is a potassium (K) type A zeolite with a pore size of approximately 3 ngstroms (0.32 nm).Purmol 4ST is a Sodium (Na) type A zeolite with a pore size of approximately 4 ngstroms (0.4 nm).Both are excellent moisture scavengers, with Purmol 3ST being more exclusive to moisture adsorption.Purmol 4ST combines high adsorption capacity for water and slightly larger molecules, such as CO2 and smaller hydrocarbons.
Huntsman Polyurethanes is a global leader in MDI-based polyurethanes, serving over 3,000 customers in more than 90 countries. We have world-scale production facilities in the US, the Netherlands and China, and a global network of more than 30 downstream formulation facilities which are located close to our customers, providing highly differentiated, tailored solutions.
Polyurethane (PU) is one of the most versatile polymers available and can be used to create rigid and flexible foams, thermoplastic urethanes (TPUs), coatings, adhesives, sealants and elastomers. This versatility sees it being used in widespread applications across multiple industries.
Polyurethanes play a critical role in addressing many of the global megatrends affecting the world today. As the most effective thermal insulant in the market, MDI-based polyurethane is widely used to deliver energy savings solutions in residential and commercial buildings. It is used throughout the cold chain, in refrigerators and cold stores, helping preserve food.
Our lightweight composite materials improve the fuel efficiency of automobiles and forms of transportation; our coatings and TPUs provide protection and extend the life of many different products and applications; and our flexible cushioning foams provide superior comfort and enhance wellbeing. These are but a few examples of the benefits our products and solutions provide.
7fc3f7cf58