Summarization:
It is a stable copolymer of a polydimethylsiloxane and a polyoxyalkylene ether.  It is soluble in cold water, but exhibits
inverse solubility above 48°C (118°F). Lo-5239 is also soluble in acetone, toluene, lower alcohols and some hydrocarbons.
Typical data:

• Appearance:cear-straw liquid
• Active content:100％
• Refractive index at 25℃:1.445-1.450
• Viscosity at 25℃:500-3000cp
• Cloud point(1%): 45-50℃

Key Performance and Properties:

• Water later soluble below 48°C, useful in cold and warm water later formulations.
• Excellent leveling and surfactant characteristics, which are important in finishes for paints and coatings.
• Good lubricating and release characteristics, which provide molding production efficiency.

Applications:
Lo-5239 has been found useful in textiles, personal care products and paints, in concentrations ranging from 0.05 to 3%. 
Typical applications are as follows:
In Texties
At concentrations up to 2%, it has been used for:
(a)  Fiberlube
(b)  Threadlube
(c)  Hot system defoaming