Plasticizer composition

摘要

#CMT# #/CMT# Composition comprises at least a plasticizer and silicon dioxide particles with an average particle size of 150 nm or less, where the portion of silicon dioxide particle and plasticizer, is 10-80 wt.% and 90-20 wt.%, respectively and the sum of the portion of silicon dioxide particle and plasticizer is at least 80 wt.%. #CMT#USE : #/CMT# The composition is useful to bring the silicon dioxide particle into a polymer material, preferably thermoplastic material, PVC material, elastomer, rubber, preferably natural rubber or silicone rubber (all claimed). #CMT#ADVANTAGE : #/CMT# The composition exhibits high stability and enables the nanoparticles to be mixed easily into any polymer materials. #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Components: The sum of the portion of silicon dioxide particle and plasticizer is at least 85, preferably 99 wt.%. The portion of silicon dioxide particle is 20-70, preferably 40-60 wt.% or 1-50, preferably 2-6 wt.% and the portion of plasticizer is 30-80, preferably 40-60 wt.%. The composition is a solvent free composition. The silicon dioxide particle exhibits an average particle size of 4-80, preferably 10-25 nm. The silicon dioxide particles are distributed as colloidal form in the composition. The silicon dioxide particle exhibits a surface modification for the compatibilization with the plasticizer. #CMT#ORGANIC CHEMISTRY : #/CMT# Preferred Components: The plasticizer comprises phthalate, adipate, trimellitic acid ester, phosphate ester, sebacate, azelate or sulfonate. Preferred Process: The surface modification comprises silanization, alcoholysis or physically adhering the polymers. #CMT#EXAMPLE : #/CMT# In a piston, diisononyl phthalate (751.5 g) and a dispersion (1315 g) of silicon dioxide particle in toluene were added under the intensive stirring. The solvent was removed at 80[deg] C in the vacuum to obtain a clear dispersion with high stability.