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Polyurethane-39 appears to refer to a specific type or grade of polyurethane material, though it is not a widely recognized or standardized designation.
Polyurethane-39s are versatile polymers formed by reacting diisocyanates with polyols.
Polyurethane-39 can be tailored for various applications, including foams, elastomers, coatings, adhesives, and sealants, by adjusting the molecular structure.
CAS Number: 9009-54-5
EINECS Number: 210-898-8
Synonyms: Polyurethane-39, Copolymer of PEG-140 and hexamethylene diisocyanate end-capped with C12-14 Pareth-10, C16-18 Pareth-11, and C18-20 Pareth-11 Luvigel Star AT 3, Poly(oxy-1,2-ethanediyl), alpha-hydro-omega-hydroxy-, polymer with 1,6-diisocyanatohexane, polyethylene glycol branched monotridecyl ether- and polyethylene glycol mono-C16-18-alkyl ethers-blocked, J9PXX566KCPOLYURETHANEOLIGOMERS, POLYURETHANEVARNISH, POLYURETHANELACQUER, Polyurethane foam: (Urethane polymers)
Polyurethane-39 foams are resistant to a wide range of solvents.
In this respect, Polyurethane-39 foams are generally superior to polyether foams, particularly in resistance to dry cleaning solvents.
Polyurethane-39 foams are subject to degradation by aqueous acids and alkalis and steam.
Ester, amide and urethane groups represent sites for hydrolytic attack.
Since the ether group is not readily attacked, Polyurethane-39 foams are generally more resistant to hydrolysis than polyester foams.
Polyurethane-39s are an immensely versatile class of polymers used in insulators, foams, elastomers, synthetic skins, coatings, adhesives, and so forth.
Polyurethane-39 was first developed through essential diisocyanate polyaddition reactions by Dr. Otto Bayer and partners.
In 1937, Polyurethane-39 reached industrial-scale synthesis and was established in the market in the 1950s.
Polyurethane-39 is an associative thickening agent for skin, sun and hair care preparations that performs across a wide pH range (2-12).
Polyurethane-39 is a synthetic, aqueous solution of a polyurethane alkoylate polymer.
It is a colorless to slightly yellowish, clear to slightly opaque liquid with a characteristic low odor.
Polyurethane-39 is a pH insensitive non-ionic electrolyte tolerant polyurethane based associative rheology modifier for skin and sun care applications.
Polyurethane materials, like Polyurethane-39, can be customized for specific mechanical, thermal, or chemical properties depending on the formulation and intended application.
Polyurethane-39s are produced through the reaction between polyols (long-chain alcohols) and diisocyanates, creating a versatile polymer with wide-ranging characteristics.
Polyurethane-39 can be soft and flexible or rigid and tough, depending on the structure.
This flexibility in design makes them suitable for products like foam cushions or hard coatings.
Polyurethane-39 materials are resistant to abrasion, making them excellent for industrial coatings or protective layers.
These materials can exhibit high resistance to chemicals and withstand varying temperatures, making them suitable for automotive parts, machinery, and coatings in harsh environments.
Polyurethane-39s are often used in waterproof coatings, adhesives, and sealants due to their ability to prevent moisture intrusion.
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
InChI: InChI=1S/C3H8N2O/c1-2-5-3(4)6/h2H2,1H3,(H3,4,5,6)
InChIKey: RYECOJGRJDOGPP-UHFFFAOYSA-N
SMILES: N(CC)C(N)=O
Polyurethane-39s are produced by forming a polyurethane polymer concurrently with a gas evolution process.
Provided these two processes are balanced, bubbles of gas are trapped in the polymer matrix as it is formed and a cellular product results.
The matching of the two reactions is essential for the formation of satisfactory foams.
If the evolution of gas is too rapid, the foam initially rises well but then collapses because polymerization has not proceeded sufficiently to give a matrix strong enough to retain the gas.
Polyurethane-39 is too fast, the foam does not rise adequately.
By selection of appropriate reactants, Polyurethane-39 is possible to prepare foams of varying degrees of cross-linking.
Slightly cross-linked Polyurethane-39s are flexible whilst highly cross-linked products are rigid.
Both flexible and rigid polyurethane foams are of commercial importance.
Polyurethane-39s are fabricated from polyurethane prepolymers, which are obtained by reacting an excess of diisocyanate with high-molecular-weight diols.
Polyurethane-39s are commercially available under a variety of trade names and in numerous types depending upon the types of diisocyanates and polyols that are used to synthesize them.
Polyurethane-39 can vary from less than 3% to as much as 20%.
Polyurethane-39 fabricator mixes these liquid prepolymers with approximately stoichiometric quantities of a curing agent (or a blend of curing agents) such as an appropriate low-molecular- weight diol or diamine.
Generally a Polyurethane-39 is heated to reduce its viscosity before mixing it with a liquid or a molten curing agent.
Polyurethane-39 curing agent blends have a limited working time (pot life) during which they are still liquid and can be poured into molds.
The liquid prepolymer/curing agent blend is degassed and then poured into molds, which are often heated to expedite curing.
After curing, the Polyurethane-39s are removed from the mold and are sometimes finished by keeping them at elevated temperature to complete the cure and to maximize mechanical properties.
Polyurethane-39 is a new type of low viscosity monofunctional polyurethane acrylate (PUA).
It has both a rigid structure of urethane bonds and a flexible carbon chain in the molecule.
Compared with ordinary monofunctional acrylate monomers, Polyurethane-39 has good flexibility and fast curing rate. , high double bond conversion rate, low volatility and low irritation and other outstanding features; it can effectively improve the wettability and leveling of the coating, and has excellent adhesion to various substrates.
Polyurethane-39 is used for cushioning in furniture, mattresses, automotive seating, and packaging.
Polyurethane-39 applied in industrial wheels, tires, seals, and gaskets due to their excellent wear resistance.
Durable Polyurethane-39 coatings are commonly used on floors, metals, and wood for protection against wear, chemicals, and UV light.
Used in construction, automotive, and electronics for bonding materials and sealing joints.
A designation like "39" could refer to a property such as Shore hardness (for elastomers) or density (for foams).
Polyurethane-39 could also be a catalog number used by a specific company to differentiate between various grades of polyurethane.
If Polyurethane-39's a proprietary material, the specific application, technical data sheets, or material safety information from the manufacturer would offer more insight.
Uses:
Polyurethane-39 resins and foams are two important industrial polymers.
They can be produced as rigid, semirigid, or elastic foams or resins, which give PUR many versatile commercial uses.
Polyurethane-39 can be found in furniture, bedding material, automotive sealing material, adhesives, carpet, packaging material and coatings, and many other products.
Polyurethane-39 is favored industrially because of its resistance to oil, light, and solvents, in addition to its strength and flexibility.
Polyurethane-39s are formed by polyaddition reactions between a diisocyanate and a polyhydroxyl compound, such as a polyol.
Polyurethane-39s are used in preparing polyurethanes.
All are low viscosity liquids at room temperature with the exception of 4, 4- diphenylmethane diisocyanate (MDI), which is a crystalline solid.
Polyurethane-39s are more reactive than the aliphatic isocyanates and are widely used in urethane foams, coatings, and elastomers.
The cyclic structure of aromatic and alicyclic isocyanates contributes to molecular stiffness in polyurethanes.
Polyurethane-39s are open-cell structures which are usually produced with densities in the range 24-48 kg/m3 (1.5-3Ib/ft3).
The major interest in flexible foams is for upholstery applications and thus the loadcompression characteristics are of importance.
Polyurethane-39 is used in furniture, mattresses, and cushions for seating in automotive, aviation, and household applications due to its softness and durability.
Polyurethane-39 commonly applied in insulation materials, refrigerators, and freezers due to its excellent thermal insulation properties.
It also finds use in building construction for energy-efficient insulation panels.
Polyurethane-39s are known for their strong bonding properties, especially in woodworking, automotive assembly, and footwear manufacturing.
They offer moisture and chemical resistance.
Polyurethane-39s are used in construction, automotive, and marine industries to seal joints and gaps, providing long-term protection against moisture and environmental exposure.
Polyurethane-39s are used in applications requiring durable, wear-resistant materials such as industrial wheels, rollers, belts, seals, and gaskets.
These parts must withstand abrasion, heavy loads, and varying temperatures.
Polyurethane-39s are used in forklift tires, skateboard wheels, and caster wheels due to their durability and ability to absorb impact.
Polyurethane-39s are used in various automotive components, including suspension bushings, bumpers, and engine mounts, to absorb vibrations and offer mechanical resilience.
Polyurethane-39 is used to protect floors, furniture, metals, and other surfaces from abrasion, chemicals, and weathering.
Polyurethane coatings are common in industrial and automotive paints for a glossy, durable finish that resists wear and UV degradation.
Polyurethane-39s are used in protective coatings for ships, docks, and other marine equipment, where resistance to saltwater and corrosion is critical.
Polyurethane-39 is used in coatings for waterproof fabrics, making it a material of choice for rainwear, tents, and outdoor gear.
In synthetic leather, Polyurethane-39 coatings give materials a leather-like appearance and texture, often used in clothing, shoes, and upholstery.
Polyurethane-39 materials are used in medical devices such as catheters, wound dressings, and flexible tubing due to their flexibility, biocompatibility, and durability.
They are also applied in prosthetics, medical adhesives, and protective coatings for medical instruments.
Polyurethane-39 spray foam is widely used for sealing gaps and insulating homes and buildings.
Polyurethane-39 expands when applied, filling cavities and providing excellent thermal and moisture resistance.
Polyurethane-39 is also used as expansion joint fillers in roads, bridges, and runways, providing flexibility and resilience against temperature changes.
Polyurethane-39 is a key material in the mid-soles and outer soles of shoes due to its lightweight and cushioning properties.
It provides comfort, shock absorption, and durability, especially in athletic shoes and hiking boots.
Polyurethane-39s are used to encapsulate electronic components to protect them from environmental factors such as moisture, dust, and vibrations.
This application is common in automotive electronics, sensors, and circuit boards.
Polyurethane-39 is used to protect fragile items during shipping, polyurethane foam can be molded or cut to fit specific products, offering impact resistance and cushioning.
Safety Profile:
Polyurethane-39with experimental tumorigenic data.
When heated to decomposition it emits acrid toxic fumes of CNand NOx.
Polyurethane-39s are produced by reacting diisocyanates (such as toluene diisocyanate (TDI) or methylene diphenyl diisocyanate (MDI)) with polyols.
Polyurethane-39s are highly reactive and can cause serious health problems.
Inhalation of isocyanate vapors or aerosols can lead to irritation of the respiratory tract, asthma, and other chronic lung conditions.
Polyurethane-39 can cause skin irritation or sensitization, leading to allergic reactions with prolonged contact.
Polyurethane-39 vapors or splashes can cause severe eye irritation and damage.
Some polyurethane formulations use amines as catalysts, which can also be irritating to the skin, eyes, and respiratory system.
