Foreign name: polyester poly
Melting point: 57-61 ℃
Purpose:
1. As low foam detergent or defoamer.
L61, L64 and F68 are used to prepare synthetic detergent with low foam and high detergency;
L61 and l81 are used as defoamers in papermaking or fermentation industry;
F68 is used as defoamer to prevent air from entering into the blood circulation of artificial heart lung machine.
2, polyether toxicity is very low, commonly used as drug excipients and emulsifiers; in oral, nasal spray, eye drops, ear drops and shampoo are often used.
3. Polyether is an effective wetting agent, which can be used in acid bath of dyeing, photographic development and electroplating of fabrics. When F68 is used in sugar factory, more sugar can be obtained due to the increase of water permeability.
4. Polyether is a useful antistatic agent, and L44 can provide long-lasting electrostatic protection for synthetic fibers.
5. Polyether is used as dispersant in emulsion coating. F68 is used as emulsifier in emulsion polymerization of vinyl acetate. L62 and L64 can be used as pesticide emulsifier, coolant and lubricant in metal cutting and grinding. As a lubricant in vulcanization of rubber.
6. Polyether can be used as demulsifier for crude oil. L64 and F68 can effectively prevent the formation of hard scale in oil pipeline and recover secondary oil.
7. Polyether can be used as papermaking additive and F68 can effectively improve the quality of coated paper.
8. F38 can be used as emulsifier, wetting agent, defoamer, demulsifier, dispersant, antistatic agent, dust remover, viscosity regulator, foam control agent, leveling agent, gelling agent, etc., and is used in the production of agricultural chemicals, cosmetics and drugs; it is also used in metal processing and cleaning, pulp and paper industry, textile processing (textile, finishing, dyeing, softening finishing), water treatment; and Used as bleaching AIDS.
Preparation and application of polyether polyol
Polyether polyols series products are mainly used in the preparation of rigid polyurethane foam, and are widely used in fridge, freezer, refrigerated vehicle, heat insulation board, pipe insulation and other fields. The product with low thermal conductivity and good dimensional stability is also an important raw material for compounding polyether. Production of polyether polyol
In polyurethane industry, it is mainly used in polyurethane foam plastics. The main varieties are polyoxypropylene polyols and polytetrahydrofuran polyols.
