Nanjing Chemical Material Corp.
Service
Products

Polyether Polyol Manufacturing Process Polyether Polyol Manufacturing Process

Synthesis of DMC-based polyether polyol by a continuous method

A certain amount of DMC catalyst is taken and uniformly dispersed in a certain amount of small molecule initiator. Add 0.5 kg of the mixture of the initiator in the small test reactor. The vacuum was replaced 1-2 times with N2, and the N2 pressure was maintained at 0.1 MPa. After heating, stirring and raising the temperature to a certain temperature, the quantitative PO was introduced into the continuous autoclave with nitrogen gas for induction. When the induction is successful (the temperature in the kettle rises and the pressure drops), the PO is continuously passed to carry out the reaction. Open the outer loop and continue to pass the PO into the continuous kettle.

When the liquid in the reaction vessel is full, the PO, DMC catalyst and the initiator are continuously added to the kettle at a certain ratio and a certain speed through the power system. Continuous discharge is started when a certain pressure is reached in the continuous autoclave. Keep the feed rate the same as the discharge rate until all the stock is added. The crude product discharged from the kettle enters the aging kettle, and is heated, matured, degassed, and discharged to obtain a finished product.

Related Products Wiki
  • Market Application Direction of Glycolic Acid

    Market Application Direction of Glycolic Acid

    March 13, 2019As an organic acid, glycolic acid has a good cleaning function for certain metal scales.view
  • Monoammonium Glycyrrhizinate

    Monoammonium Glycyrrhizinate

    April 29, 2019Licorice is the root of leguminous plants, mainly produced in Mongolia, Shanxi, Gansu, Ningxia and Xinjiang.view
  • 2021 China International Cleanser Ingredients Machinery & Packaging Expo(CIMP)

    2021 China International Cleanser Ingredients Machinery & Packaging Expo(CIMP)

    May 17, 2022The most beautiful encounter is reunion, and every reunion will definitely leave a beautiful mark in our lives.--NCMC The much-anticipated China International Cleanser Ingredients Machinery & Pack...view
  • Have You Heard of Glycollic Acid Peeling?

    Have You Heard of Glycollic Acid Peeling?

    October 30, 2020glycolic acid is a heavyweight ingredient in skin care, which is often used in exfoliator, toner or facial masks. Because of its strong skin care effect, it is often used for chemical peeling, but hig...view
  • Benzyl Bromide

    Benzyl Bromide

    October 13, 2021Benzyl bromide, is a benzene ring by bromomethyl bromide substituted aromatic compounds, chemical formula C7H7Br, in the presence of oxidizer it is obtained from toluene and bromine reaction, it is a ...view
  • 2017 Group Tour in Gansu

    2017 Group Tour in Gansu

    January 30, 2018As an annual welfare practice, NCMC 2017’s 5 day company tour from Nanjing to Gansu started in Sept. 1, 2017. The main purpose is to enrich corporate culture, relieve work stress, enchance group sens...view
Related Products
  • Hexyl Bromide Product Name: Ethyl Vinyl EtherChemical Formula: C4H8OCAS No.: 109-92-2Dangerous Grade: 3Technical Data of Hexyl BromideItemSpecificationAppearanceColorless Transparent LiquidAssay≥99.50%Water Conte...
  • Methallyl Alcohol Product InformationProduct Name: Methallyl AlcoholChemical Formula: C4H8OCAS No.: 513-42-8Dangerous Grade: 3.2Technical Data:ITEMSSPECIFICATIONSAppearanceColorless transparent liquidChroma≤10Water Co...
  • Propyl Bromide Product Name: 1-BromopropaneChemical Formula: C3H7BrCAS No.: 106-94-5Dangerous Grade: 3Technical Data of Propyl BromideItemSpecificationAppearanceColorless Transparent LiquidAssay≥99.0%Water Content...
  • Ethyl Vinyl Ether Product Name: Ethyl Vinyl EtherChemical Formula: C4H8OCAS No.: 109-92-2Dangerous Grade: 3Technical Data of Ethyl Vinyl EtherItemSpecificationAppearanceColorless Transparent LiquidAssay≥99.50%Water C...
  • TEL:+86-25-52337978
  • EMAIL: info@njchm.com
  • ADDRESS:12/F, Block B, Technology and Innovation Building, Nanjing University of Technology, No.5 New Model Road, Nanjing 210009, China