Polypropylene glycol PPG-200 (CAS: 25322-69-4) is a non-ionic high molecular polymer, appearing as a colorless to slightly yellow transparent viscous liquid. With excellent emulsifying dispersibility, wetting solubility, chemical compatibility, and low toxicity safety characteristics, it plays a key role as an intermediate and functional component in multiple industrial industries.
In the polyurethane industry, PPG-200 is a basic polyol initiator for flexible foam production. By reacting with isocyanates, it constructs flexible chain segment structures, directly affecting the resilience and comfort of the foam. In the lubricating oil and hydraulic fluid industry, it is used as a preferred synthetic base oil for formulating high-temperature chain oils, compressor oils, and gear oils, and is also a key component of fire-resistant hydraulic fluids.
In the field of industrial auxiliaries, PPG-200 can be used as an efficient release agent component (serving polyurethane foam, rubber, and plastic processing) and as a core raw material for defoamers (widely used in fermentation, papermaking, and coating processes). Additionally, in daily chemicals, it is used as a humectant and emollient in creams, lotions, and hair products; in surfactant synthesis, it is an important intermediate for producing low-foaming non-ionic surfactants, dispersants, and emulsifiers.
| Application Industry | Specific Process/Product | Role of PPG-200 |
|---|---|---|
| Synthetic Lubricants | High-temperature chain oils, compressor oils, gear oils | Base oil component, imparting excellent viscosity-temperature performance and oxidation stability |
| Hydraulic Systems | Fire-resistant hydraulic fluids | Key component, providing lubricity and anti-wear protection, suitable for high-temperature environments near ignition sources |
| Polyurethane Industry | Flexible foam (sponge) production | Polyol initiator, constructing flexible chain segment structures, affecting resilience and comfort |
| Mold Processing | Polyurethane foam, rubber, plastic demolding | Forms a uniform release film, enhancing demolding efficiency and reducing mold fouling |
| Chemical Processes | Defoaming in fermentation, papermaking, coatings | Core raw material for defoamers, rapidly breaking foam in aqueous/oil phases |
| Daily Chemicals | Creams, lotions, hair products | Humectant, emollient, synergist, providing a light skin feel |
| Surfactant Synthesis | Low-foaming non-ionic surfactants, dispersants, emulsifiers | Synthesis intermediate, imparting tunable HLB values and broad compatibility |
PPG-200 has characteristics of low toxicity (LD50 oral > 2000 mg/kg), low volatility, flash point > 150°C, and is not classified as dangerous goods during normal transportation and storage. It is recommended to store at 5–35°C, keep the container tightly sealed to prevent moisture absorption, and keep away from strong oxidizers. As a non-ionic high molecular polymer, it has high tolerance to acid, alkali, and hard water environments, maintaining activity under complex chemical conditions.