What are the catalysts for polyurethane rigid foam and gel reactions?
There are a variety of catalysts used for polyurethane rigid foam reactions and gel reactions, some examples of which are listed below: Foaming reaction catalysts: Organotin compounds, such as ethylenetrimethylene tin (T-9) and ethylenetriethyltin (T-12). Organotin-cobalt composite catalysts, such as ethylenetrimethyltin-cobalt (T-9/Co). Organotin-acid catalysts, such as ethylenetrimethyltin-benzoic acid (T-9/BzOH). Phosphate catalysts such as triphenylphosphine (TPP) and tris(2-methylpropyl)phosphine. Gel reaction catalysts: Organotin compounds such as di(2-methylpropyl)dimethyltin (T-12)…
Catalysts: The Unseen Heroes of Chemical Reactions
Catalysts are substances that increase the rate of a chemical reaction without being consumed in the process. They play a crucial role in various industrial, biological, and environmental processes. This essay will delve into the importance, types, and applications of catalysts, shedding light on these unseen heroes that make countless reactions possible. Importance of Catalysts Catalysts are vital for several reasons. Firstly, they significantly speed up…
Tetrachloroethylene Perchloroethylene CAS:127-18-4
Perchloroethylene, also known as perchloroethylene, is an organic compound with the chemical formula C2Cl4 and is a colorless liquid. Chinese name: tetrachloroethylene Foreign name: tetrachloroethene Alias: perchloroethylene Chemical formula C2Cl4 Molecular weight 165.833 CAS No. 127-18-4 EINECS No. 204-825-9 Melting point-22 ℃ Boiling point 121 ℃ Water solubility Density1.622 g/cm³ Appearance Colorless liquid Safety Description S7; S16; S23; S24; S36/37; S45; S61 Hazard symbol Xn Hazard…
广告
HDI Low Viscosity AsahiKasei TUL-100
HDI Low Viscosity AsahiKasei TUL-100 ABOUT: Product Class: Isocyanate DURANATE TUL-100 by Asahi Kasei is hexamethylene diisocyanate (HDI) trimer with extra-low viscosity and high NCO content. Acts as a curing agent for urethanes. Exhibits excellent weatherability, good chemical & abrasion resistance, good compatibility and drying properties. Shows excellent color retention and outstanding performance. DURANATE TUL-100 is suitable for automotive, architectural, industrial, consumer electronic and information technology…
HDI Low Viscosity AsahiKasei TLA-100
HDI Low Viscosity AsahiKasei TLA-100 Type： Aliphatic polyisocyanate based on hexamethylene diisocyanate. Features： # High NCO content # Low viscosity # Excellent weather resistance # Excellent Compatibility # Good coating film appearance Applications： # Two-component applications # Automotive OEM coatings # Automotive refinishes # Plastic coatings Typical properties： Appearance Colorless to slightly yellowish clear liquid Non-volatile 100 wt% Solvent None NCO content 23.5 wt% Viscosity…
HDI Waterborne Covesro XP2655
HDI Waterborne Covesro XP2655 ABOUT: Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).Hardener for waterborne two-component polyurethane systems. Product Types HDI PIC Hydrophilic polyisocyanate Aliphatic polyisocyanate Crosslinkers Polyisocyanate Hardeners Polyisocyanurate Isocyanate Reactive system Material: Coatings, paints & inks:Fast curing, Weather resistant, Easy mixing, Waterborne Adhesives:Moisture resistant, Fast bonding, Waterborne, Heat activated General Characterization: Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). Hardener for waterborne two-component polyurethane…
HDI Waterborne Covesro XP2547
HDI Waterborne Covesro XP2547 ABOUT: Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). Hardener for waterborne two-component polyurethanecoatings. Product Types： No data available Material： No data available General Characterization： Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). Hardener for waterborne two-component polyurethane coatings. Logistics and Handling Storage Conditions： – Storage in original sealed Covestro container. – Recommended storage temperature: 0 – 30 °C. –…
HDI Waterborne Covesro 305
HDI Waterborne Covesro 305 ABOUT: Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).As a hardener for aqueous two-component polyurethane systems. Product Types： Hydrophilic polyisocyanate Material： No data available General Characterization： Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). As a hardener for aqueous two-component polyurethane systems. Logistics and Handling Storage Conditions： – Storage in original sealed Covestro container. – Recommended storage temperature: 0 –…
HDI Waterborne Covesro 304
HDI Waterborne Covesro 304 ABOUT: Hydrophilically modified, aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). As the hardener/binder component for high-quality waterborne polymer dispersions and as an additive to improve the property level of waterborne coating and adhesive systems. Product Types HDI PIC Hydrophilic polyisocyanate Aliphatic polyisocyanate Crosslinkers Polyisocyanate Hardeners Polyisocyanurate Isocyanate Reactive system Material： Coatings, paints & inks：High functional, Weather resistant, Easy mixing, Ultra-low monomer,…
HDI Waterborne DIC 5500
HDI Waterborne DIC 5500 ABOUT: The product data shown here are not sales specifications. When you import/use the product, you need to confirm whether the regulations of the country/region are applicable or not. Please refer to SDS concerning safety and handling of the product. Description： Water dispersible polyisocyanate hardener. Applications： Industrial coatings. Protective coatings. Wood coatings. Hardener for 2K waterborne polyurethane coatings. Key features： Dispersibility…
