What are the application ranges of polypropylene glycol PPG?
Polypropylene glycol PPG, also known as epoxide polymer, has a wide range of applications in various industries such as cosmetics, pigments, daily chemicals, pharmaceutical oils, etc. There are multiple types of PPGs, including ten, namely PPG200, PPG400, PPG600, PPG1000, PPG1500, PPG2000, PPG3000, PPG4000, PPG6000, and PPG8000, and they can also provide centralized grids for development and processing. Now let's talk in detail about the application scope of polypropylene glycol PPG:
1. Polypropylene glycol PPG products can be used in pharmaceuticals. Polyethylene glycol with low relative molecular weight can be used as solvent, cosolvent, o/w type emulsifier and stabilizer to make cement suspension, lotion, injection, etc., and can also be used as water-soluble ointment matrix and suppository matrix. Solid waxy polyethylene glycol with high relative molecular weight is commonly used to increase the viscosity and solidity of low molecular weight liquid PEG, as well as external compensation for other drugs.
2. PPG series is soluble in toluene, ethanol, Trichloroethylene and other organic solvents, and PPG200, 400 and 600 are soluble in water, with lubrication, solubilization, defoaming and anti-static properties.
3. PPG is used as release agent, solubilizer, synthetic oil additive, water-soluble Cutting fluid additive, roll oil, hydraulic oil, high-temperature lubricant, rubber internal lubricant and external lubricant.
The molecular weight of polypropylene glycol PPG is 180-8800, and due to its stable physical properties, it is a chemical product that is not easily volatile and has no corrosiveness in daily life. Due to its low molecular weight, polypropylene glycol PPG is soluble in water. However, if it is a polymer with a higher molecular weight, it can only be slightly soluble in water, oil, hydrocarbons, aliphatic alcohols, ketones, and esters. The viscosity of polypropylene glycol PPG varies from brand to brand, and its colors are also diverse, so it is important to choose the right brand when purchasing products. In addition, polypropylene glycol PPG is also a non ionic surfactant that can react with alcohols to form ethers. It is precisely because of this characteristic that it can also be used as a solvent for vegetable oils, resins, and paraffin waxes, and can be used to prepare alkyd resins, emulsifiers, demulsifiers, lubricants, and plasticizers.
Due to the alkaline nature of polypropylene glycol (PPG), it can cause certain corrosion to the skin surface tissue and eyes. Therefore, protective equipment such as goggles and gloves should be worn during operation. Containers used for polypropylene glycol PPG can be made of steel, aluminum, polyethylene, or polypropylene. Polypropylene glycol PPG is widely used in the production of various types of polyurethane elastomers, coatings, adhesives, finishing agents, sealants, waterborne polyurethane, and other fields. It can partially replace polyester polyols, reduce production costs in this field, improve product quality, and can also be used as intermediates for esterification and etherification reactions, as well as defoamers and defoamers.