1,4-butanediol (BDO/1,4-BD) is a versatile liquid diol intermediate with reactive primary hydroxyl functionality and a linear structure that lends itself to formulating polyurethanes with a good balance of hardness and low temperature flexibility; high strength and durability; and thermal stability.
1,4-butanediol(BDO) is characterized by…
A molecular weight (MW) of 90.12.
An equivalent weight (EW) of 45.06.
And a hydroxyl value of 1245 mg KOH/g.
A melting point of 20.1°C (68.2℉)
A boiling point of 235°C (455℉)
A flash point of 121°C (250℉)
While 1,4-BDO has a number of uses as a polymer intermediate, BDO plays a key role in the creation of polyurethanes, with urethane grade BDO being particularly advantageous because of its low moisture content (< 150 ppm moisture specification) and very high purity (> 99.85 % purity by gc).
1. 1.4-Butanediol(BDO) plays as a polyurethane building block
2. 1.4-Butanediol(BDO) playes as a chain extender
3. The polyurethane application of 1.4-Butanediol(BDO)
Because of BDO’s consistency, durability, and other performance attributes, end-use applications for 1,4-butanediol in polyurethanes are wide ranging, both as a chain extender and in polyester polyols.
The main polyurethanes produced using BDO are solid and cellular elastomers. Applications include a vast array of performance cast urethane parts, such as...
Wheels, rollers, and belts.
Pipe linings and pipeline products.
Pump liners and parts.
Other applications include…
Polyurethanes based on BDO systems perform well in aggressive environments—for example, exposures in mining, mineral, and oil field operations and in medical devices.
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