Question

What are the main industries and processes where polypropylene glycol PPG-400 is applied?

Answer
2026-05-27 官方文档 聚丙二醇PPG-400

Polypropylene glycol PPG-400 is widely used across six major fields: polyurethane industry, synthetic lubricants, surfactants, daily chemicals, pharmaceuticals, and industrial auxiliaries. It is a multifunctional nonionic intermediate and functional component spanning multiple industries.

Core Application Industries and Processes

PPG-400 is produced by the catalytic polymerization of propylene oxide and propylene glycol. Its terminal hydroxyl groups and ether bond structure endow it with excellent reactivity, low hygroscopicity, and high compatibility. The following are six application directions based on the product database:

Industry FieldSpecific Process/UseFunctional Role
Polyurethane IndustryFlexible/Rigid foams, elastomers, adhesives, coatingsSoft segment component, adjusting chain flexibility and hydrolysis resistance
Synthetic Lubricants and Functional FluidsHigh-temperature lubricants, hydraulic fluids, compressor oils, metalworking fluidsBase oil or co-solvent, providing lubricity and thermal stability
Surfactants and EmulsifiersIndustrial cleaning, textile auxiliariesNonionic surfactant intermediate, emulsifying/wetting/dispersing
Personal Care and CosmeticsCreams, lotions, facial cleansersMoisturizer, lubricant, emollient, solubilizer
PharmaceuticalsSuppository bases, ointment bases, drug solubilizationConsistency regulator, plasticizer, excellent biocompatibility
Other Industrial AuxiliariesDefoamers, mold release agents, heat transfer fluids, synthetic fiber oilsCore raw material or functional additive

Application Suggestions

PPG-400 has proven safety through toxicological studies (rat oral LD₅₀ > 2000 mg/kg, non-irritating and non-sensitizing to skin), making it suitable for compliant use in daily chemical and pharmaceutical fields. Its high primary hydroxyl content provides moderate reactivity when used as a raw material for polyurethane synthesis, making it suitable for formulations requiring controlled chain segment flexibility. For industrial formulations, store sealed in an environment of 0–40°C to avoid moisture absorption.

Precautions

  • Flash point approximately 220–230°C; keep away from open flames during high-temperature operations
  • Low biodegradability (OECD 301B 28 days ≤ 20%); do not discharge into water environments
  • Store separately from strong oxidizers to avoid hazardous reactions