N-циклогексил-2-пирролидон CHP 2-пирролидинон CAS 6837-24-7

Tree Chem N-Cyclohexyl-2-pyrrolidone (CHP) CAS 6837-24-7 is produced with advanced synthesis control to ensure high purity, light color, and consistent performance. CHP is miscible with most organic solvents and shows superior solvency for resins, oils, and polymers.

We manufacture and supply CHP for industrial coatings, cleaning formulations, electronics, textile auxiliaries, and agrochemical dispersions, supporting high-performance and environmentally responsible formulations. For further details, please contact info@cntreechem.com.

Спецификация

Основная информация

Технические характеристики

Приложения

Electronics Industry

• N-Cyclohexyl-2-pyrrolidone (CHP) is widely applied in semiconductor, PCB, and electronic component cleaning processes due to its high polarity, excellent solvency, and low volatility. In semiconductor manufacturing, it serves as a primary ingredient in photoresist strippers and wafer-cleaning formulations. CHP effectively dissolves organic residues and polymerized photoresists after plasma ashing, improving substrate cleanliness without damaging delicate microstructures. When blended with solvents such as N-methylpyrrolidone (NMP) or γ-butyrolactone (GBL), CHP enhances solubility range and stripping efficiency.
• In printed circuit board (PCB) and flexible circuit (FPC) production, CHP is used for flux cleaning and copper surface treatment. Its strong solvency enables efficient removal of rosin, resin, and activator residues while maintaining substrate integrity. CHP’s high boiling point allows its use in elevated-temperature cleaning stages, improving process efficiency and reducing solvent loss. It is also adopted as a component in precision cleaning formulations for microelectronic components, including semiconductor chips, LCD substrates, and connectors, ensuring effective removal of organic contaminants and fine particulates.

Coatings and Inks

• In the coatings industry, CHP acts as a powerful co-solvent and carrier solvent for high-performance resins such as polyimide and epoxy. It enhances resin solubility and contributes to better film leveling, adhesion, and durability. Its use in automotive coatings improves gloss, hardness, and weather resistance, particularly in heat-resistant and solvent-based systems. In high-end coatings, CHP helps control evaporation rate, ensuring uniform film formation and extending storage stability.
• In printing ink applications, CHP functions as a solvent and additive that improves fluidity and print performance. In flexographic and gravure inks, it enhances drying balance and wetting on substrates. It also plays a key role in specialty functional inks such as conductive and fluorescent inks, where its ability to dissolve and stabilize functional fillers ensures excellent dispersion and consistent conductivity.

Pharmaceutical Industry

• CHP is an effective solvent and carrier for active pharmaceutical ingredients and intermediates. Owing to its high boiling point and chemical stability, it is suitable for reactions requiring elevated temperatures. As a reaction medium, CHP improves solubility of reactants, accelerates reaction rates, and enhances product purity. It is particularly used in synthesizing pharmaceutical intermediates such as amides and heterocycles.
• CHP also acts as a drug carrier and solubilizer, enhancing the bioavailability of poorly soluble drugs. By forming hydrogen bonds or molecular complexes with drug molecules, it promotes absorption and improves pharmacokinetic behavior. In advanced formulations, CHP serves as a penetration enhancer and stabilizing agent in transdermal and sustained-release systems.

New Energy Industry

• In the lithium-ion battery sector, CHP is an emerging eco-friendly replacement for NMP in electrode slurry preparation. Its high boiling point, low volatility, and compatibility with PVDF binder systems make it suitable for high-nickel and next-generation cathode materials. CHP ensures uniform dispersion of active materials and conductive agents, improving coating uniformity and electrode adhesion.
• Additionally, CHP can act as an electrolyte additive to enhance ionic conductivity and cycling stability. Small amounts incorporated into carbonate-based electrolyte systems improve lithium-ion mobility and reduce impedance. CHP is also used in other energy applications, including solar cell cleaning and membrane electrode assembly (MEA) preparation for fuel cells, contributing to improved efficiency and chemical resistance.

Textile and Specialty Cleaning Applications

• In textile dyeing and finishing, CHP functions as a dye carrier and penetrant, particularly for aromatic polyamide (aramid) fibers. It enhances dye penetration, uniformity, and depth, ensuring vibrant color and durable results. CHP also improves dispersion and stability of dyes in high-temperature processes.
• In specialty cleaning applications, CHP’s high solvency and high flash point make it ideal for removing coatings, paints, and screen-printing residues. As a paint remover, it efficiently strips heat-resistant coatings without damaging substrates. In screen-printing cleaning solutions, CHP improves ink removal and prevents clogging, making it valuable for high-precision printing and electronics assembly environments.

Polymer Processing and Other Uses

• In polymer chemistry, CHP serves as a solvent, plasticizer, and reaction medium for high-molecular-weight polymers such as polyimides, polyesters, and engineering plastics. It assists in polymer dissolution, dispersion, and purification, supporting high-performance material processing. In paper coatings, CHP improves gloss and adhesion, while in petroleum and lubricants, it acts as a solubilizer to enhance additive dispersion.

Хранение и обработка

• Хранить в dry, cool, and ventilated areas away from heat sources and sunlight.
• Keep containers tightly sealed to prevent moisture absorption.
• Избегайте контакта с oxidizers and acids.
• Использовать stainless steel or coated drums for storage and transportation.
• Recommended storage temperature: below 30 °C.

Уведомление об использовании

• Avoid direct inhalation or prolonged skin contact; use with adequate ventilation.
• Wear protective gloves, goggles, and clothing during handling.
• Prevent contamination with reactive chemicals or water.
• Ensure proper grounding during transfer to avoid static discharge.
• In case of contact with eyes or skin, rinse thoroughly with water and seek medical attention if irritation persists.
• Photoresist stripper: CHP 60–80%, triethanolamine 10–15%, sorbitol 0.5–2%, water 5–10% — removes photoresist residues effectively without substrate damage.
• Wafer cleaner: CHP 10–20%, glycol ether solvent 15–25%, surfactant 2–8%, deionized water balance — cleans organic and metallic contaminants.
• PCB flux cleaner: CHP 15–25%, isopropanol 30–40%, deionized water 30–40%, surfactant 2–5% — removes flux residues safely.
• Automotive coating: resin 40–60%, pigment 10–30%, CHP 10–20%, other solvents 10–20%, additives 2–5% — enhances gloss and film durability.
• Eco-friendly coating: water-based resin 40–50%, CHP 5–10%, water 30–40%, co-solvent 5–10%, additives 2–5% — reduces VOC emissions.
• Printing ink: pigment 10–25%, resin 20–40%, CHP 15–25%, other solvents 20–30%, additives 2–5% — improves flow and coating performance.
• Pharmaceutical synthesis solvent: CHP 50–80%, reactants 10–30%, catalyst 0.1–5% — provides stable high-temperature reaction medium.
• Drug carrier system: API 5–20%, CHP 30–70%, polymer base 10–40% — enhances solubility and bioavailability.
• Battery slurry: active material 80–90%, PVDF binder 2–5%, CHP 5–15%, conductive agent 5–10% — uniform dispersion for electrode preparation.
• Electrolyte additive: carbonate solvents 80–90%, LiPF₆ 1.0–1.2 mol/L, CHP 0.5–5% — enhances ionic conductivity and cycling stability.
• Dyeing bath: dye 2–8%, CHP 10–30%, auxiliaries 5–10%, water balance — improves dye penetration and evenness.
• High-temperature paint remover: CHP 40–60%, auxiliary solvents 20–40%, stripping agents 10–20%, surfactant 2–5% — efficiently removes heat-resistant coatings.

Упаковка

• 180 kg drum
• Other packaging options available upon request