What industries are polyester polyols mainly used in
Polyester polyols are one of the core raw materials for preparing polyurethane (PU), which are divided into aliphatic polyester polyols, aromatic polyester polyols, polycaprolactone polyols, and bio based polyester polyols. By relying on polar ester groups within the molecule, polyurethane is endowed with high wear resistance, high adhesion, oil resistance, and excellent mechanical strength; It of
Polyester polyols are one of the core raw materials for preparing polyurethane (PU), which are divided into aliphatic polyester polyols, aromatic polyester polyols, polycaprolactone polyols, and bio based polyester polyols. By relying on polar ester groups within the molecule, polyurethane is endowed with high wear resistance, high adhesion, oil resistance, and excellent mechanical strength; It often reacts with isocyanate to produce foam, elastomer, paint, adhesive and synthetic leather.
1、 Segmented industries and specific applications
1. Shoe and elastomer industry (main market for aliphatic polyester polyols)
Suitable raw materials: Adipic acid polyester polyol
Downstream products:
Micro porous PU sole, sports shoe outsole, casual shoe sole;
TPU thermoplastic polyurethane film, pipe, extruded profile;
Casting type CPU elastomer, rubber roller, conveyor belt, sealing gasket, shock absorber block, industrial roller.
Advantages: Wear resistant, tear resistant, oil resistant, and not easily cracked after repeated bending; Compared to polyether polyols, it has stronger load-bearing capacity.
2. Synthetic leather and textile coating industry
Ultra fine fiber synthetic leather, PU synthetic leather resin (clothing leather, sofa leather, luggage leather)
Fabric PU coating, waterproof breathable film, raincoat fabric coating, tent coating, tactile coating
Features: The paint film is flexible, wear-resistant, and resistant to dry and wet friction, and the leather surface has a full hand feel.
3. Coatings and Ink Industry
(1) Industrial anti-corrosion coatings, wood polyurethane paint, floor paint, engineering machinery topcoat, metal rust proof paint;
(2) Plastic, aluminum profiles, automotive repair polyurethane coatings;
(3) Polyurethane printing ink, composite ink, connecting material;
(4) Water based PU coating (PUD raw material).
Fatty polyester polyols are weather resistant and not prone to yellowing; Aromatic polyester polyols enhance hardness and reduce costs.
4. Adhesive and sealant industry
Food packaging composite film polyurethane adhesive (dry composite adhesive)
PUR hot melt adhesive, solvent based PU adhesive, wood adhesive, metal bonding adhesive
Automotive windshield sealant, industrial joint sealant
Polyester system adhesive has high initial adhesion, good wettability, high bonding strength, and solvent resistance.
5. Polyurethane foam industry (mainly aromatic polyester polyols)
Hard foam
Refrigerator/freezer insulation layer, cold storage panel, spray insulation, thermal pipeline insulation, solar insulation layer, cold chain container, building exterior wall spray hard foam; New energy battery pack insulation filling.
Soft foam/semi hard foam
High density car seat sponge, headrest, armrest, motorcycle seat cushion, industrial cushion pad (polyester soft foam has better compression resistance and strength than ordinary polyether sponge).
6. Automotive and Rail Transit Industry
Car interior sponge, shock absorption and buffer foam
TPU automotive wire harness cover, dust cover, airbag film
Automotive component coatings, chassis anti-corrosion coatings
Car lamp sealant, interior composite adhesive
7. New energy industry
Thermal insulation rigid polyurethane foam for energy storage and power batteries
Sealing and potting materials for battery modules
Photovoltaic module protective film, photovoltaic frame anti-corrosion coating
TPU outer skin material for new energy cables
8. Home appliance industry
Refrigerator and freezer insulation foam; Washing machine shock-absorbing elastomer; PU coating for household appliance shells and adhesive for plastic parts.
9. Medical and high-end consumables (mainly polycaprolactone polyester polyols)
Excellent biocompatibility, used for biodegradable polymers, medical catheters, sutures, drug delivery carriers, medical elastic films, and protective equipment coatings.
10. Wind power and construction machinery
Polyurethane coating for wind turbine blade protection, anti-corrosion coating for construction machinery, and sealing elastomer for hydraulic systems.
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