Nanjing Chemical Material Corp.

Application and Classification of Polyether Polyol Application and Classification of Polyether Polyol

Polyether polyol is mostly used to manufacture soft, hard and semi-rigid polyurethane foams. Polyether polyol  is not only easy to obtain raw materials with low cost, but also hold good properties of synthetic polyurethane foam.It is the polyol  raw material  with the largest dosage for polyurethane foam industry.

1. Polyether polyol for soft foam

Polyether polyol used for soft foam is generally long-chain polyether with low functionality. The functionality of polyether polyol in soft foam formula is generally 2 ~ 3, and the average molecular weight is between 2000 ~ 6500. Polyether triol is the most commonly used in soft foam. Generally, glycerin (glycerol) is used as RXH, which is obtained by ring-opening polymerization of 1, 2-propylene oxide or copolymerization of propylene oxide with a small amount of ethylene oxide. The molecular weight is generally in the range of 3000 ~ 7000. Glycerin are mainly used  soft foam with high resilience, and can also be used in foam products such as semi-hard foam. This kind of polyether has good miscibility with water and isocyanate, the reaction activity is suitable, and the foam process stability is greatly improved. In addition, the foam curing time is shortened, which also reduces the production cost.

2. Polyether polyol for hard form

Polyether polyol with high functionality and high hydroxyl value is commonly used in hard foam formulations,only in this way can a sufficient degree of cross-linking and rigidity be produced. The hydroxyl value of hard foam polyether polyol is generally 350 ~ 650mg KOH/g, and the average functionality is above 3.

3. Elastic non-foam polyurethane material

As for ordinary polyether polyol used in elastic non-foam, polyurethane polyether glycol and polyether triol with molecular weights ranging from 1000 to 3000 are most commonly used. In addition, sealant also uses the high molecular weight polyether triols and coatings also use polyether polyol with a molecular weight of several hundred.

Related News
  • Two Different Types of Anionic Surfactants

    Two Different Types of Anionic Surfactants

    September 24, 2020Anionic surfactant is a kind of product with the longest history, the largest output and the most varieties among surfactants. According to the structure of hydrophilic groups, anionic surfactants can...view
  • Main Applications of Bronopol

    Main Applications of Bronopol

    October 30, 2020At ordinary temperature, bronopol is a kind of white to light yellow and yellowish brown crystalline powder. It is odorless, tasteless, soluble in water, ethanol and propylene glycol but difficult to ...view
  • Main Characteristics of Polyether Polyol

    Main Characteristics of Polyether Polyol

    April 21, 2021Polyether polyol is an oligomer whose main chain contains ether bond (-R-O-R-) and whose end or pendant group contains more than two hydroxyl groups (-OH). It is prepared by the ring-opening polymeriz...view
  • What is a Wetting Agent

    What is a Wetting Agent

    July 6, 2020A wetting agent is a substance that reduces the surface tension of water, it spreads water on the surface and increases the ability of liquid dispersion.view
  • Application of Surfactants in the Petroleum Industry

    Application of Surfactants in the Petroleum Industry

    January 15, 2021In the petroleum industry, surfactants are widely used as oilfield chemicals in drilling, cementing, oil production, oil and gas gathering and transmission, tertiary oil recovery and oilfield water tr...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
  • TEL:+86-25-52337978
  • EMAIL:
  • ADDRESS:12/F, Block B, Technology and Innovation Building, Nanjing University of Technology, No.5 New Model Road, Nanjing 210009, China