SE306310BSE438766ASE438766ASE306310BSE 306310 BSE306310 BSE 306310BSE 438766 ASE438766 ASE 438766ASE 438766 ASE438766 ASE 438766ASE 306310 BSE306310 BSE 306310B
Authority
SE
Sweden
Application number
SE438766A
Inventor
H Biegler
K Trebinger
Original Assignee
Degussa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DegussafiledCriticalDegussa
Publication of SE306310BpublicationCriticalpatent/SE306310B/xx
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B33/00—Silicon; Compounds thereof
C01B33/113—Silicon oxides; Hydrates thereof
C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
C01B33/183—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane