Composite-initiated Polyether Polyols refer to polyether polyols containing two or more initiators. Such initiators usually include glycerol (propylene glycol), sorbitol, sucrose, etc., which react with ethylene oxide (EO), propylene oxide (PO), etc. in the presence of a catalyst to generate polyether polyols‌.

Composite-initiated Polyether Polyols are a special type of polyether polyol that are prepared using composite initiators,they are important raw materials widely used in polyurethane products. Composite-initiated Polyether Polyols are formed by the reaction of polyether compounds with polyols, resulting in high molecular weight compounds with multiple hydroxyl functional groups.

Polyether polyols act as plasticizers in polyurethane production, allowing for the adjustment of its properties and characteristics.

characteristics

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Reactivity‌: The reactivity of the polyether polyol with composite initiator depends on the number of active hydrogens in the initiator. Generally speaking, when the molecular weight is not much different, for the same PO type polyether, the polyether with ethylenediamine and aniline as initiators has the highest activity, and the polyether with pentaerythritol and sucrose polyols as initiators is also relatively high, while the polyether with ethylene glycol and propylene glycol as initiators has lower activity.

‌Viscosity and hydroxyl value‌: For the same type of polyether, the higher the hydroxyl value, the smaller the molecular weight, the higher the reactivity, and the lower the viscosity. EO-terminated polyethers are usually more active and more hydrophilic than all-PO polyethers. The higher the EO content, the more obvious this trend is.

Application

Composite-initiated Polyether Polyols are used in both soft foam and hard foam polyethers. Soft foam polyethers are mainly used in the polyurethane soft foam industry and the production of polyurethane adhesives, while hard foam polyethers are widely used in the fields of home appliance insulation, building exterior wall insulation, etc.

Composite-initiated Polyether Polyols are one of the main raw materials for the production of polyurethane foam plastics. It can be used to produce soft and hard polyurethane foam plastics, which are widely used in furniture, automobiles, construction and other fields. ‌Adhesives and elastomers‌: Polyether polyols are also used to make adhesives and elastomers. These products have excellent bonding properties and elasticity and are suitable for various bonding and sealing applications. ‌

In the coatings industry, Composite-initiated Polyether Polyols are often used to prepare high-performance coatings, providing excellent coating effects and durability. ‌

In addition, Composite-initiated Polyether Polyols are also used to produce foam stabilizers, defoamers for the paper industry, crude oil demulsifiers, high-efficiency low-foam detergents, lubricants, quenching agents, latex foaming agents, rubber lubricants and surfactants, etc. ‌.

Specification

Product	BQ8220	Index
Exterior	Light yellow to brown yellow liquid	Q/0600YPU 025-2012
25℃ Viscosity(mPa•s)	5000-7000	GB/T 12008.7-2010
20℃ Proportion	1.10±0.05	GB/T 15223-2008
Hydroxyl value(mgKOH/g)	415±15	GB/T 12008.3-2009
Water content(%)	≤0.20	GB/T 22313-2008
pH vlaue	8.0-12.0	GB/T 12008.2-2010

Handling and storage

Do not allow the Composite-initiated Polyether Polyols contact with the skin or eyes.
Avoid breathing in the vapors or mist.
Keep the polyol away from fire or sparks and no smoking
Take precautions to prevent the accumulation of static electricity.

During the storage and transportation,the Composite-initiated Polyether Polyols need packed in galvanized steel drums,keep cool and dry,no water,no heat.