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polyether polyol (polyether for short) is an organic polymer, which is prepared by addition polymerization reaction of starting agent (compound containing active hydrogen group) with ethylene oxide (EO), propylene oxide (PO), butylene oxide (BO), etc. in the presence of catalyst. The largest yield of polyether is to use glycerol (glycerol) as the starter and epoxide (usually PO and EO are used together), by changing the feeding method of PO and EO (mixed addition or separate addition), addition ratio, The feeding sequence and other conditions produce various general polyether polyols.
Pretreatment of raw materials-usually, the starting agent and catalyst are premixed first to generate metal hydrocarbon oxide, which is dehydrated in vacuum and then added to the reaction kettle.
Ring Opening Polymerization reaction-this reaction is an exothermic reaction, and the reaction heat must be removed in time; In order to prevent oxidation reaction, dry nitrogen must be introduced before the reaction.
Post-treatment process-mainly includes neutralization, adsorption, dehydration, filtration, distillation and other units.
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On May 24, 2022, the market price reference price in East China was 11200-11400 yuan/ton
On May 25, 2022, the market reference price in East China was 11200-11400 yuan/ton
On May 25, 2022, the market reference price in East China was RMB 11000-11300/ton
On May 27, 2022, the market reference price in eastern China was 11000 yuan/ton, and the soft bubble market was reduced in a narrow range.
On May 31, 2022, the market reference price in East China was RMB 11000-11300/ton
On June 1, 2022, the market reference price in East China was RMB 11000-11300/ton
June 2, 2022 reference price of polyether polyols in east China
On June 6, 2022, the market reference price of 330N Polyether polyol in East China was 12400-13100 yuan/ton
On June 7, 2022, the market reference price in East China was 12700-13200 yuan/ton
On June 8, 2022, the market reference price in East China was RMB 11000-11300/ton
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