Patent · US Expired

Rehydration bondable alumina

US4579839A · kind A · utility

21Cited by
4References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 23, 1984
Grant dateApr 1, 1986
Priority date—
Expiry dateFeb 23, 2004

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01P2006/22
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

(1) Rehydration bondable alumina of median particle size less than 5 microns, LOI (250.degree. to 1100.degree. C.) about 4 to 12% by weight, and having the ability to yield rehydration bonded objects of lower density and higher strength as compared with objects made of seven micron rehydration bondable alumina, or density less than 0.9 cm.sup.3 /g at strength about equal to or greater than 7 MPa; (2) rehydration bondable alumina having the ability to yield rehydration bonded objects having at least 0.6 cc of pore volume per gram for pores smaller than 300 Angstroms. Also encompassed are materials containing such alumina and originating from e.g. bauxite.

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