摘要:
The process for producing mineral fillers with graft peroxy groups for polymers according to the present invention comprises treatment of mineral fillers, at a temperature of from 50 to 150.degree. C. under a pressure of from 1.33.10.sup.2 to 4.10.sup.5 Pa (lmmHg to 4 atm), with an organosilicon compound of the formula:R.sub.4-y SiX.sub.y or R'R.sub.3-z SiX.sub.z, whereinR is vinyl, allyl, norbornyl,X is chlorine, an alkoxy or acyloxy,y=1-3,z=1-2,R' is methyl, ethyl, propyl,whereafter the mineral filler containing graft unsaturated groups is separated from the reaction mixture, dried and ozonized with an ozone-oxygen mixture containing 4 to 6 vol.% of ozone at a temperature of from -40.degree. to +20.degree. C.The process for producing mineral fillers with graft peroxy groups for polymers is technologically simple and makes it possible to perform extending and grafting of a polymer at lower temperatures (50.degree.-140.degree. C.).
摘要:
According to the invention, the method for producing mineral polymer fillers containing graft hydroperoxide groups consists in treating mineral fillers at a temperature of 50.degree. to 150.degree. C. and a pressure of 1.33.10.sup.2 to 4.10.sup.5 Pa (1 mm Hg to 4 atm) with organosilicon compounds of the general formula:R.sub.4-y SiX.sub.yorR'R.sub.3-z SiX.sub.z,whereR is vinyl, allyl or norbornyl,X is chlorine, alkoxy or acyloxy,y=1-3,z=1-2,R' is methyl, ethyl or propyl,whereupon the mineral filler containing graft unsaturated groups is separated from the reaction mixture, dried and ozonized with an ozone-oxygen mixture containing 4 to 6 percent by volume of ozone at a temperature of -20.degree. C. to +20.degree. C. in an aliphatic saturated monohydric alcohol or aliphatic saturated monohydric acid.The method for producing mineral polymer fillers containing graft hydroperoxide groups is quite simple and makes it possible to carry out the filling and grafting of polymers at a reduced temperature of 50.degree. to 140.degree. C.