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Priority to NZ502078ApriorityCriticalpatent/NZ502078A/en
Priority claimed from PCT/US1997/009674external-prioritypatent/WO1998055398A1/en
Publication of NZ502078ApublicationCriticalpatent/NZ502078A/en
The specification describes a method for preparing low-concentration polyaluminosilicate microgels from a first stream containing a water soluble silicate and a second stream containing a strong acid having a pKa of less than 6. The silicate and acid are mixed at a rate to produce a Reynolds number of at least 4000, the mixture is aged and then diluted to a silica concentration of not more than 1.0 wt.%. The method achieves reduced silica deposition during the preparation of the microgels.
NZ502078A1997-06-041997-06-04Improved method for preparing low-concentration polyaluminosilicate microgels
NZ502078A
(en)
Oxidation process for preparing the intermediate 6.alpha., 9.alpha.- difluoro-11.beta., 17.alpha.-dihydroxy-16.alpha.-methyl-androst-1,4-dien-3- one 17.beta.-carboxylic acid