POLYOL
| TYPES | APPLICATIONS |
| POLYETHER POLYOLS | |
| Polypropylene Glycols | Elastomers PU flexible foam PU rigid foam |
| Poly(oxide of tetra-methylene) glycol (PTMEG) | Elastomers Fibers of PU |
| Mannich polyols | Foams in spray at low temperatures |
| POLYESTER POLYOLS | Rigid foams and high performance applications |
| POLYMERIC POLYOLS FOAMS | High Resilience flexible |
| POLYOLS FROM VEGETAL OILS | Rigid foams |
Properties
Hydroxyl value (VOH)
Acid value (VA)
Water content
POLYETHER POLYOLS
- Polyether polyols are polymerized products produced by the catalyzed addition of monomers of propylene oxide (PO) and/or ethylene oxide (EO) to an initiator/starter.
Typical starters are glycerin, mono-propylene glycol, sucrose, sorbitol, water and amines. - They are organic materials with two or more alcohol (hydroxyl) groups (OH) at the end of the polyether chains.
- Polyols of varying molecular weight, functionality, viscosity and reactivity can be produced.
- They are liquid under room temperature, sometimes with micrometer polymer particles present in suspension.
- Polyether polyols, when combined with di-isocyanates, are used in urethane applications, such as flexible foam, and in Coatings, Adhesives and Sealants & Elastomer (CASE) systems. As a result, we may encounter them in a wide variety of goods including furniture, car seating, bedding, paints and coatings, artificial sports tracks, playground surfaces, ski suits and other waterproof leisure wear.
- Polyols are not classified for physical hazards. They are not flammable, but will burn. They are not classified for health or environmental effects according to GHS criteria and can generally be considered as low hazard products.