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EP0386868: Low-density calcium carbonate agglomerate.

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Filing Information

Inventor(s) DAMIANO JOHN · LEHMAN RICHARD LONG · GRIFFIN CHARLES RICHARD ·
Assignee(s) PFIZER ·
Application Number EP90300414
Filing date --
Publication date 09/12/1990
U.S. Classifications --
International Classifications A61K 9/22  · C01F 11/00  · C01F 11/18  · C09C 1/02  ·
Kind CodeA1
No Claims, No Drawings


Abstract

A process for the preparation of a low density, substantially water-insoluble, particulate material which comprises forming an aqueous slurry containing precipitated calcium carbonate and optionally a dissolved alkali metal polyphosphate, and treating said slurry to heating and mechanical processing steps to provide a particulate material having a particle size of -50 to +170 mesh (U.S. Standard Sieve), and a particle density of no more than 1.0 g/ml. and a resistance against breakdown in water; and a low density, substantially water-insoluble, calcium carbonate-containing, particulate material prepared by such process.

Independent Claims

The current document has no claims.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3615811 CHEMICAL PRODUCTS CORP
US2263656 NEW JERSEY ZINC CO

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
FR2292747GEWERK VICTOR CHEM WERKE
FR1472725