Fillers and pigments possessing organic polymer stabilizing...

Details Fillers and pigments possessing organic polymer stabilizing... Fillers and pigments possessing organic polymer stabilizing...

B - Operations, Transporting

01

J

117/47.8

B01J 13/04 (2006.01) C09C 1/36 (2006.01) C09C 3/12 (2006.01)

Patent

CA 1309307

"FILLERS AND PIGMENTS POSSESSING ORGANIC POLYMER STABILIZING PROPERTIES AND A PROCESS FOR THEIR PREPARATION". ABSTRACT Stabilizing inorganic fillers or pigments having simultaneous reinforcing effect and stabilizing effect on organic polymers are obtained by a process comprising the following stages: a) bringing the inorganic filler or pigment, into contact with a solution, in an inert organic solvent, of a sterically hindered amine comprising one or more alkoxysilane groups in its molecule; b) maintaining the obtained mixture at higher than ambient, temperature (20-25°C) for a period of at least 0.5 hours; c) removing the solvent, treating at a temperature of 120-200°C and recovering the stabilizing filler or pigment obtained.

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