Quenchant Polymer


Market Served



Product Description

UCON® Quenchant RL and RL-NN are nonflammable polymeric quenchants manufactured by The Dow Chemical Company. They are an aqueous solution of a liquid organic polymer and a corrosion inhibitor. The organic polymer is soluble in water and produces a homogenous solution. At temperatures above 165°F (74°C), however, the polymer separates from water as an insoluble phase. UCON Quenchant RL-NN is formulated with a proprietary non-nitrite corrosion inhibitor which is completely compatible with UCON Quenchant RL without nitrosamine formation. Analogous quenching performance is obtained with either UCON Quenchant RL or RL-NN. When hot metal is quenched in a diluted solution of UCON Quenchant RL or RL-NN, a film of the liquid organic polymer is deposited on the surface of the hot metal. The rate at which the metal is cooled is governed, in part, by the thickness of the polymer-rich film. The thickness of this film is controlled by the concentration of UCON Quenchant RL or RL-NN in the quench bath. The cooling rate is controlled also by adjusting the quench bath temperature and/or the rate of agitation. The major difference between UCON Quenchant RL and RL-NN and the other UCON Quenchants is the polymer composition, which provides uniform heat transfer in a broad range of applications.

Featured Benefits
  • Classified as 'FM Approved' as tested against the latest testing criteria
  • The optimum operating conditions for a specific metal or part may be determined by control of concentration, bath temperature, and/or agitation
  • Minimize replacement control due to its low deterioration and/or oxidation rate. The major make-up requirement is for water lost by evaporation
  • Eliminates the smoke, soot, and residues common to oil quenchants. Equipment maintenance and plant cleanliness are easier to achieve
  • Fully soluble in water and resistant to bacterial growth
  • Will not be affected in any way by freezing/thawing
Typical Properties
Flash Point, PMCC None
Fluid Type Polymer quench
Pour Point <32°F (<0°C)
Refractometer Multiplier (IFT 40-ATAGO PAL-1) 2.7/2.5
Rust Protection, ASTM 665B A&B Pass
Specific Gravity, 68°F (20°C) 1.073
Viscosity (100°F) 1060 - 1300 SUS
Weight, 68°F (20°C) 8.77 lbs/gal.