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Impranil C is a non-ionic polyurethane dispersion designed for applications requiring flexible, durable, and high-performance polymer films.
Impranil C is supplied as a milky-white liquid dispersion in water, making it environmentally more favorable compared to solvent-based polyurethane systems.
Impranil C is a toluene diisocyanate-based (TDI) polyurethane resin.
Because Impranil C is a formulated mixture of a polymer matrix and solvents, Impranil C does not have a single designated CAS number.
Instead, the raw polymer is treated as a trade secret, while the product itself is commonly formulated in solvents like 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, Propan-2-one, 2-Oxopropane, 2-Ketopropane, Dimethyl formaldehyde, Dimethyl ketone, Dimethylformaldehyde, Dimethylformaldehyde, Ethanone, Methyl acetone, Methyl ethyl ketone, Methylketone, Propanone, dimethyl, Propanone, 2-methyl-, Propanone, 2-propyl-, Pyroacetic ether, Pyroacetic spirit, 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 in water and most organic solvents
Impranil C products are waterborne polyurethane systems designed to provide flexible, durable, and high-performance polymer films after drying.
They are widely used as binders in coatings and textile finishing.
Impranil C is a polyester urethane adduct based on toluene diisocyanate that must be crosslinked by the addition of polyisocyanate before use.
Impranil C has a viscosity at 23°C (30% in Ethylacetat gelöst) of 27,000-53,000 mPa·s.
Impranil C is suitable for formulating coatings with medium-hard handle for use in many different textile applications such as, protective clothing, sportswear, tarpaulins, awnings, fire hoses and sleeping bad undersides.
Impranil C has good adhesion, good resistance to hydrolysis, good weather stability, high abrasion resistance and resistance to dry cleaning.
Impranil C is used as a solvent for fats, oils, waxes, resins, rubber, plastics, lacquers, varnishes and rubber cements.
Impranil C is used to make many chemical compounds, rayon, photographic films, plastics, fibres, drugs and other chemicals, for storing acetylene gas, and is present in paint and varnish removers, purifying paraffin and for hardening and dehydrating tissues.
Impranil C (CAS No. 67-64-1) is a colorless, highly volatile, and flammable organic liquid with a characteristic pungent odor.
Impranil C is the simplest and smallest ketone, widely used as a powerful solvent in industrial, laboratory, and cosmetic applications.
Impranil C is an aromatic polyester urethane adduct (based on toluene diisocyanate) manufactured by Covestro.
Impranil C functions as a base component for formulating flexible coatings, protective clothing, and synthetic leather, but must be cross-linked with a polyisocyanate before use.
Impranil C Solution is a polyester urethane adduct based on toluene diisocyanate that must be crosslinked by the addition of polyisocyanate before use.
This product has a viscosity at 23°C of 27,000-53,000 mPa·s, and a non-volatile content (0.9-1.1g / 1h / 125°C, convection oven) of 30 ± 1%.
Impranil C is suitable for formulating coatings with medium-hard handle for use in many different textil applications such as, covers for containers, light conveyer belts, camping articles and ironing board covers.
This product offers good adhesions, resistance to dry cleaning, high abrasion resistant, good weather stability, and good resistance to hydrolysis.
Physical properties
Impranil C is a colourless liquid with a distinct odour.
Impranil C is highly flammable. Acetone is used to dissolve other chemical substances and mixes readily with water, alcohol, dimethylformamide, chloroform, ether and most oils.
Impranil C is considered 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 can polymerise rapidly due to heating and under the influence of air, light and on contact with a catalyst, strong oxidisers and metals such as copper and aluminium, with fire or explosion hazard.
As a gas mixed with air, acetone is a fire and explosion hazard.
On standing, acetone can form peroxides which may then explode.
Impranil C will react with iron and steel in the presence of moisture.
Impranil C is capable of dissolving plastic glasses frames, jewellery, pens and pencils, rayon stockings and other rayon garments.
Technical & Safety Overview
Chemistry: Polyester urethane adduct based on toluene diisocyanate.
Application: Used as a film-forming binder for textiles, industrial coatings, and sealants.
Safety & Handling: Requires the use of standard personal protective equipment (PPE), including gloves and lab coats, due to its chemical formulation.
Key Properties
Water-based polyurethane system (solvent-free or low VOC)
Excellent film-forming ability
High elasticity and flexibility
Good abrasion and wear resistance
Strong adhesion to various substrates (textiles, leather, plastics)
Good hydrolysis resistance depending on grade
Key Properties
Water-based (low VOC content, environmentally friendly compared to solvent-based systems)
Excellent film-forming ability
High elasticity and flexibility
Good abrasion and wear resistance
Strong adhesion to various substrates (textiles, leather, plastics)
Good resistance to hydrolysis and aging (depending on grade)
Chemical Nature
Impranil C consists of aliphatic or aromatic polyurethane chains dispersed in water, stabilized by internal ionic or non-ionic groups.
After drying, Impranil C forms a continuous, tough polyurethane film with rubber-like properties.
Main Applications
Textile coatings and finishing (e.g., sportswear, technical fabrics)
Artificial leather (synthetic leather production)
Adhesives for flexible materials
Coatings for films, foams, and nonwovens
Printing pastes for textile printing
Common Applications
Industrial Solvent: Dissolves plastics, synthetic fibers, resins, epoxies, and heavy-duty paints.
Laboratory Use: Acts as a polar aprotic solvent in chemical synthesis and serves as a rapid-drying glassware cleaner.
Cosmetics: Functions as the primary active ingredient in traditional nail polish removers.
Chemical Intermediate: Used to manufacture methyl methacrylate (MMA) and bisphenol A (BPA).
Applications
Impranil C is widely used in industrial coating and finishing systems such as:
Textile coatings (waterproof, breathable fabrics)
Synthetic leather production
Flexible coatings for films and plastics
Adhesives and laminating systems
Technical textiles and performance fabrics
Performance Advantages
Environmentally friendly compared to solvent-based PU systems
Suitable for low-VOC and sustainable formulations
Maintains flexibility even at low temperatures
Compatible with other dispersions and additives for formulation tuning
Advantages
Environmentally friendly (waterborne system)
Combines softness with mechanical strength
Suitable for high-performance textile applications
Can be modified with additives to adjust hardness, elasticity, or tack
Industrial Importance
Impranil C is commonly used as a binder system in waterborne coating formulations.
Impranil C provides a balance of mechanical strength and softness, which makes Impranil C especially valuable in textile and artificial leather industries.
Safety & Storage (MSDS Summary)
Fire Hazard: Extremely flammable liquid and vapor.
Keep away from heat, sparks, open flames, and static discharge.
Health Hazard: Causes serious eye irritation. Inhalation of high concentrations may cause drowsiness, dizziness, or headaches.
Storage: Store in a cool, well-ventilated, fireproof area in tightly sealed containers.
Handling & Storage
Should be stored at moderate temperatures (typically 5–30°C)
Must be protected from freezing
Stir well before use, as dispersion settling may occur over time
