Patent · US Expired

Hydrophobic precipitated silica granules

US5009874A · kind A · utility

51Cited by
4References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 13, 1988
Grant dateApr 23, 1991
Priority date—
Expiry dateApr 13, 2008

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01P2006/90
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Hydrophobic, essentially spheroidal precipitated silica particulates, well adapted as a reinforcing filler material for silicone elastomers, have a density of at least 0.15, a water wettability of at least 20% and a maximum water uptake of 5%.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.