CRAYVALLAC SLX

Product Details

CRAYVALLAC® SLX is a high performance micronised amide wax rheology modifier designed for the low temperature manufacture of moisture curing methoxysilane based sealants.

CRAYVALLAC® SLX is also suitable for the low temperature manufacture of moisture curing methoxysilane based adhesives.

CRAYVALLAC® SLX is specially designed for the low temperature manufacture of one-component methoxysilane sealants where processing temperatures typically lie within the range 60 - 90°C (140 - 194°F).

With moisture curing methoxysilane based sealants, CRAYVALLAC® SLX is generally added along with the initial charge of methoxysilane polymer and plasticizer to a vacuum dispersion vessel either with or without heating capability. This is then followed by the pigments and extenders. Efficient activation of CRAYVALLAC® SLX is achieved during the vacuum dispersion stage by allowing the batch temperature to rise to 60 - 90°C (140 -194°F). This condition of dispersion would typically be maintained for approximately 30 minutes at 80°C (176°F), or until the required leve l of dispersion obtained and a suitably low moisture content has been achieved (typically <800 ppm.). Following this, the batch temperature is lowered sufficiently to allow for the safe addition of such additives as moisture scavengers, adhesion promoters and reaction catalysts.

Benefits

• 100% Active
• Efficient activation at 60-90°C (140 - 194°F)
• Reduced production cycle times
• Imparts shear thinning rheology
• Very good extrusion properties
• Excellent sag and slump resistance
• Minimal effect on modulus
• Excellent storage stability 

Typical Applications

For one component moisture curing methoxysilane based sealants, excellent slump and sag control will generally be obtained when CRAYVALLAC® SLX is used at a level of 1 - 5% by mass on total formulation.