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Impranil C is a non-ionic polyurethane dispersion developed for applications that require flexible, durable, and high-performance polymer films.
Impranil C is supplied as a milky-white aqueous dispersion, offering an environmentally preferable alternative to conventional solvent-based polyurethane systems.
Impranil C is a polyurethane resin based on toluene diisocyanate (TDI).
As Impranil C is a formulated mixture containing a polymer matrix and solvents,Impranil C does not have one specific CAS number assigned to the complete product.
The raw polymer is generally considered proprietary or a trade-secret component, while the formulation may contain solvents such as acetone (CAS No. 67-64-1).
CAS No.: 67-64-1
Chemical Name: Acetone
CBNumber: CB3130928
Molecular Formula: C3H6O
Formula Weight: 58.08
Synonyms: Propanone, Dimethyl ketone, 2-Propanone, Dimethylformaldehyde, Methyl ketone, β-Ketopropane, Pyroacetic spirit, Ketone propane, Ketone dimethyl, Pyroacetic ether, Ketopropane, Propan-2-one, Beta-ketopropane, Methyl propanone, 2-Oxopropane, 2-Ketopropane, Dimethyl formaldehyde, Ethanone, Methyl acetone, Methyl ethyl ketone, Methylketone, Propanone, dimethyl, Propanone, 2-methyl-, Propanone, 2-propyl-, Pyroacetic
Chemical & Physical Properties
Chemical Formula: CH₃COCH₃ (or C₃H₆O)
IUPAC Name: Propan-2-one (also known as dimethyl ketone)
Molar Mass: 58.08 g/mol
Boiling Point: 56.05 °C (132.89 °F)
Melting Point: −94.7 °C (−138.5 °F)
Flash Point: −20 °C (−4 °F) (Highly flammable)
Solubility: Fully miscible with water and most organic solvents
Impranil C products are waterborne polyurethane systems formulated to form flexible, durable, and high-performance polymer films after drying.
These products are extensively employed as binders in coating systems and textile finishing applications.
Impranil C is a polyester urethane adduct based on toluene diisocyanate and requires crosslinking with a polyisocyanate before application.
At 23 °C, its viscosity is reported as 27,000–53,000 mPa·s when dissolved in ethyl acetate at 30%.
Impranil C can be used to formulate coatings with a medium-hard handle for a broad range of textile applications, including protective clothing, sportswear, tarpaulins, awnings, fire hoses, and sleeping bag undersides.
The product provides good adhesion, hydrolysis resistance, weather stability, abrasion resistance, and resistance to dry cleaning.
Impranil C is used as a solvent for substances such as fats, oils, waxes, resins, rubber, plastics, lacquers, varnishes, and rubber cements.
Acetone, associated with the formulation, is also utilized in the production of various chemical compounds, rayon, photographic films, plastics, fibers, pharmaceuticals, and other chemicals.
Impranil C is additionally used for acetylene gas storage and can be found in paint and varnish removers, paraffin purification processes, and tissue hardening and dehydration applications.
Impranil C (CAS No. 67-64-1) is described as a colorless, highly volatile, and flammable organic liquid with a characteristic pungent odor.
The acetone component is the simplest and smallest ketone and is widely utilized as a strong solvent in industrial, laboratory, and cosmetic applications.
Impranil C is an aromatic polyester urethane adduct based on toluene diisocyanate and manufactured by Covestro.
Impranil C serves as a base material for the formulation of flexible coatings, protective clothing, and synthetic leather and requires crosslinking with a polyisocyanate before use.
Impranil C Solution is a polyester urethane adduct based on toluene diisocyanate that must be crosslinked with polyisocyanate before application.
At 23 °C, the product has a viscosity of 27,000–53,000 mPa·s and a non-volatile content of 30 ± 1% (0.9–1.1 g / 1 h / 125 °C, convection oven).
Impranil C is suitable for producing medium-hard coatings intended for various textile applications, including container covers, light conveyor belts, camping products, and ironing board covers.
The product offers good adhesion, resistance to dry cleaning, high abrasion resistance, favorable weather stability, and good resistance to hydrolysis.
Physical Properties
Impranil C appears as a colorless liquid with a distinct odor.
It is highly flammable.
Acetone can dissolve a wide variety of chemical substances and is readily miscible with water, alcohol, dimethylformamide, chloroform, ether, and most oils.
Impranil C is classified as a volatile organic compound by the National Pollutant Inventory.
Specific Gravity: 0.786
Melting Point: -94 °C
Boiling Point: 56.5 °C
Relative Vapour Density: 0.788
Flash Point: -18 °C
Chemical Properties
Impranil C may polymerize rapidly when exposed to heat, air, light, catalysts, strong oxidizing agents, and metals such as copper and aluminum, creating a potential fire or explosion hazard.
When acetone is present as a gas mixed with air, Impranil C may create a fire and explosion risk.
During storage, acetone may form peroxides that can subsequently become explosive.
Impranil C can react with iron and steel when moisture is present.
The acetone component is capable of dissolving materials such as plastic eyeglass frames, jewelry, pens and pencils, rayon stockings, and other rayon-based garments.
Technical & Safety Overview
Chemistry: Polyester urethane adduct based on toluene diisocyanate.
Application: Used as a film-forming binder in textile applications, industrial coatings, and sealant systems.
Safety & Handling: Standard personal protective equipment (PPE), including gloves and laboratory coats, should be used when handling the product due to its chemical composition.
Key Properties
Water-based polyurethane system with solvent-free or low-VOC characteristics
Excellent film-forming performance
High flexibility and elasticity
Good resistance to abrasion and wear
Strong adhesion to substrates such as textiles, leather, and plastics
Good hydrolysis resistance depending on the product grade
Key Properties
Waterborne system with low VOC content and a more environmentally favorable profile than solvent-based alternatives
Excellent capability for forming continuous polymer films
High elasticity combined with flexibility
Good abrasion and wear resistance
Strong adhesion to a range of substrates, including textiles, leather, and plastics
Good resistance to hydrolysis and aging, depending on the grade
Chemical Nature
Impranil C contains aliphatic or aromatic polyurethane chains dispersed in water and stabilized through internal ionic or non-ionic groups.
During the drying process, the dispersion develops into a continuous and durable polyurethane film with rubber-like characteristics.
Main Applications
Textile coating and finishing, including sportswear and technical fabrics
Artificial leather and synthetic leather production
Adhesive applications for flexible materials
Coatings for films, foams, and nonwoven materials
Textile printing pastes
Common Applications
Industrial Solvent: The acetone component is capable of dissolving plastics, synthetic fibers, resins, epoxies, and heavy-duty paints.
Laboratory Use: Acetone acts as a polar aprotic solvent in chemical synthesis and can also be used as a fast-drying cleaner for laboratory glassware.
Cosmetics: Acetone is commonly used as the principal active component in traditional nail polish removers.
Chemical Intermediate: Acetone is utilized in the production of methyl methacrylate (MMA) and bisphenol A (BPA).
Applications
Impranil C is widely incorporated into industrial coating and finishing formulations, including:
Textile coatings for waterproof and breathable fabrics
Synthetic leather manufacturing
Flexible coatings for films and plastic substrates
Adhesive and laminating systems
Technical textiles and performance-oriented fabrics
Performance Advantages
Offers an environmentally preferable alternative to solvent-based polyurethane systems
Suitable for low-VOC and more sustainable formulation approaches
Retains flexibility even under low-temperature conditions
Can be combined with other dispersions and additives to modify formulation performance
Advantages
Waterborne and environmentally favorable system
Provides a combination of softness and mechanical strength
Suitable for demanding textile and performance applications
Its properties can be adjusted through the addition of suitable additives to control hardness, elasticity, or tack
Industrial Importance
Impranil C is widely utilized as a binder system in waterborne coating formulations.
Its combination of mechanical strength and softness makes Impranil C particularly useful for textile and artificial leather applications.
Safety & Storage (MSDS Summary)
Fire Hazard: Impranil C is associated with an extremely flammable liquid and vapor hazard.
Keep the product away from heat sources, sparks, open flames, and sources of static discharge.
Health Hazard: The formulation may cause serious eye irritation.
Exposure to high concentrations by inhalation may result in drowsiness, dizziness, or headaches.
Storage: Keep in tightly closed containers in a cool, well-ventilated, and fire-protected storage area.
Handling & Storage
The product should generally be stored at moderate temperatures, typically between 5–30 °C.
It must be protected against freezing conditions.
Before use, the material should be stirred thoroughly because settling of the dispersion may occur during prolonged storage.
