公开(公告)号：DE1467023A1

公开(公告)日：1969-01-23

申请号：DED0043745

申请日：1964-02-28

Applicant: DEGUSSA

Inventor： HELMUT BRUENNER DIPL-CHEM DR ,  DIETER SCHUTTE DIPL-CHEM DR ,  SCHMITZ FRANZ-THEO

IPC: A61K9/14 ,  C01B33/113 ,  C08K3/36

Abstract: A surface envelope of silica over water droplets is formed by intensively shaking water and hydrophobic silica or by atomizing water and hydrophobic silica in a cyclone into which they are introduced through separate nozzles. The hydrophobic silica is made by contacting silica (of particle size 10-40 mm and of B.E.T. surface about 150 m2/g and carbon content 1-1.5% by weight) with 0.75 m. mol. per gm. of silica of a haloalkyl silane, e.g. dimethyldichlorosilane as disclosed in Specification 1,031,764. The water droplets can have a size of 2-3 x 10-2 mm. The product is a white powder having a water to silica content of 5 to 10:1 parts by weight. On freezing and thawing the product or under pressure the water separates from the silica. The water in the product may be present in an aqueous solution, e.g. of pharmaceutical or cosmetic substances. The product can be used as a fire-retardant.

公开(公告)号：CA758938A

公开(公告)日：1967-05-16

申请号：CA758938D

Applicant: DEGUSSA

Inventor： BITTNER FRIEDRICH ,  BRUNNER HELMUT ,  SCHUTTE DIETER ,  DIETHER JEAN ,  SCHMITZ FRANZ-THEO

公开(公告)号：CA790489A

公开(公告)日：1968-07-23

申请号：CA790489D

Applicant: DEGUSSA

Inventor： SCHUTTE DIETER ,  SCHMITZ FRANZ-THEO ,  BRUNNER HELMUT

公开(公告)号：DE1244125B

公开(公告)日：1967-07-13

申请号：DED0045091

申请日：1964-08-01

Applicant: DEGUSSA

Inventor： BITTNER DR FRIEDRICH ,  BRUENNER DR HELMUT ,  SCHUTTE DR DIETER ,  DIETHER JEAN ,  SCHMITZ FRANZ-THEO

IPC: C01B13/22 ,  C01B33/18