Silicone Surfactant



  L-6900 is non-hydrolyzable silicone copolymer specifically developed for use in rigid foam
formulations incorporating reduced levels of auxiliary blowing agent; for example, high-water/reduced CFC-11 systems. It is the surfactant of choice for moderately reduced CFC-11 systems. However, since the performance of this silicone is determined in large measure by the nature of the formulation(polyols, catalysts and CFC-11 usage levels, etc.), this catalyst should be considered for all formulations using reduced levels of auxiliary blowing agent.

  Silicone L-6900 produces rigid polyurethane foams having a narrow distribution of small,
fine, closed cells that contribute to excellent k-factor performance. In addition, the product provides excellent flow performance in these systems.


¡Ý Premium silicone specifically designed for stabilization of high-water/reduced CFC-11
formulations
¡Ý Excellent silicone choice for conventional formulations
¡Ý Produces foams with a narrow distribution of fine, closed cell, resulting in superior
k-factor performance
¡Ý Offers maximized foam flow performance in both conventional and high-water/reduced
CFC-11 systems


Properties Specification
Physical Appearance Liquid
Viscosity(10¡É, cst)
Viscosity(25¡É, cst)
1616
717
Color(GVS) 3
Specific Gravity(25¡É) 1.05
Freezing Point(¡É,[¢µ]) -6[21]
Flash Point(PMCC, ¡É,[¢µ]) 89¡É[193]


¢ºApplications
  L-6900 is a premium product that offers superior performance in refrigeration pour-in-place
and slabstock applications. A starting concentration of 1.5 parts by weight per 100 parts of polyol is recommended. However in many instances, the preferred use level of this material is 2.0 to 2.5 parts by weight per 100 parts of polyol.