Nanjing Chemical Material Corp.
Service
Products

Polyether Polyol Vs Polyester Polyol Polyether Polyol Vs Polyester Polyol

Polyester polyols, which are organic substances, are usually formed by condensation (or transesterification) of an organic dicarboxylic acid (anhydride or ester) with a polyol (including a diol) or by polymerization of a lactone with a polyol. The dibasic acid is phthalic acid or phthalic anhydride or an ester thereof, adipic acid, halogenated phthalic acid or the like. The polyhydric alcohol is ethylene glycol, propylene glycol, diethylene glycol, trimethylolpropane, pentaerythritol or the like. Different types of polyester polyols have different properties due to different types or different preparation processes. Several indicators that are important for polyester polyols are hydroxyl number, acid value, moisture, viscosity, molecular weight, density, and color. Characteristics and uses of polyester polyols: Polyester-based polyurethane contains a large number of polar groups such as ester groups and amino groups in the molecule, and has strong cohesive strength and adhesion, and has high strength and wear resistance.

Polyether polyol (referred to as polyether) is composed of an initiator (active hydrogen group-containing compound) and ethylene oxide (EO), propylene oxide (PO), butylene oxide (BO), etc. in the presence of a catalyst. It is obtained by polyaddition reaction. The largest yield of polyether is glycerol (glycerol) as the initiator and epoxide (usually PO and EO). Various general-purpose polyether polyols are produced by changing the feeding mode of PO and EO (mixing plus or separately adding), the ratio of addition, the order of addition, and the like.


Related Products Wiki
  • The Bactericidal and Antiseptic Effect of Bronopol

    The Bactericidal and Antiseptic Effect of Bronopol

    October 30, 2020Bronopol is a kind of highly effective and extensive preservative, which has the following obvious advantages:1. Bronopol at ppm concentration can effectively kill bacteria.2. It has multiple bacteric...view
  • 2017 Oleon Distributor Meeting

    2017 Oleon Distributor Meeting

    January 31, 2018Date:2017/11/02-11/04Place: Siem Reap, Cambodia Thanks for the invitation from Oleon, this is the third year for NCMC to attend Oleon’s AP& ME distributor meeting. Members from Oleon Belgium base, to...view
  • Use of Polyether Polyol

    Use of Polyether Polyol

    April 21, 2020Polyether polyol is abbreviated as polyether. It is an oligomer whose main chain contains ether bond (—R—O—R—) and the terminal group or side group contains more than 2 hydroxyl groups (—OH). It ...view
  • Precautions for Propionyl Chloride

    Precautions for Propionyl Chloride

    August 25, 2020The following points should be noted when using propionyl chloride in China1. Overview of hazardsHealth hazard: its vapor has a strong irritation to respiratory tract and eyes, and causes cough and dy...view
  • 79th API China

    79th API China

    January 31, 2018November 15-17, 2017Xiamen International Convention and Exhibition CenterAPI China is China's leading exhibition for the pharmaceutical manufacturing sector covering the complete spectrum of products ...view
  • Introduction to DMC Catalyst

    Introduction to DMC Catalyst

    August 25, 2020The DMC catalyst has a freezing point of 4 ℃ and a boiling point of 90 ° C. It is a colorless transparent liquid with a slight aromatic smell at room temperature. It is easy to volatilize and has th...view
Related Products
  • C20-24 Olefin Product InformationProduct Name: alpha olefin C20-24 Chemical Formula: C22H44CAS No.: 93924-10-8Dangerous Grade: NoneTechnical Data:TestMethod< C18 (wt.%) G.C.C18(wt.%) G.C.C20(wt.%) G.C.C22(...
  • DMC Catalyst Product Name: DMC catalystChemical Formula: N/ACAS No.: N/ADangerous Grade: NOTechnical Data of DMC CatalystItemsMeasurementSpecificationResultsPhysic appearance:VisualWhite powderWhite powderCobal...
  • Pentyl Bromide Product Name: Pentyl bromideChemical Formula: C5H11BrCAS No.: 110-53-2Dangerous Grade: 3Technical Data of Pentyl BromideItemMethodSpecificationResultAppearanceVisual InspectionColorless Transparent L...
  • Ethyl Iodide Product Name: Ethyl iodideChemical Formula: C2H5ICAS No.: 75-03-6Dangerous Grade: 6.1Technical Data of Ethyl IodideITEMSSPECIFICATIONSRESULTSAppearanceColorless transparent liquidConformsAssay(Dried ...
  • 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