In the previous article, we introduced polyether in the traditional sense, actually there are some species that can be used as polyether, here is a brief introduction
1. Polymer Polyol POP
Vinyl polymer grafted polyether polyol, commonly known as polymer polyol (Polyether Polyol), or POP for short.
Polymer polyol is a polyether based on general-purpose polyether polyol (general-purpose soft foam polyether triol. Highly reactive polyether) with the addition of vinyl monomers such as acrylonitrile, styrene, methyl methacrylate, vinyl acetate, vinyl chloride and initiators, free radical graft polymerization was carried out at about 100 degrees and under nitrogen protection. POP is an organically filled polyether polyol for the preparation of high bearing or high modulus flexible and semi-rigid polyurethane foam products. This organically filled polyether replaces general purpose polyether polyols to produce low density, high bearing performance foams that not only meet hardness requirements, but also save raw materials. The appearance is generally white or light creamy yellow, also known as white polyether.
2. Polytetrahydrofuran ether, PTMG, PTMEG
PTMG is a terminal hydroxylated linear polyether glycol produced by ring-opening polymerization of tetrahydrofuran. This polyurethane material has good low temperature properties, abrasion resistance, aging resistance, hydrolysis resistance and mildew resistance, good flexibility and elasticity. It is a noble member of the polyether family. It is commonly used in the production of high-performance polyurethane elastomers and polyurethane elastomers (spandex).
PTMEG is available in the market with three molecular weight differentiation specifications: PTMEG650, PTMG1000 and PTMG2000, of which PTMG650 is liquid at room temperature, while PTMG1000 and PTMG2000 are white waxy solids that melt into colorless transparent liquid when heated to about 50°C.
3. Castor oil polyether polyol, etc.
