Patent · US Active

Cement compositions containing nano sized boehmite crystallites

US9056791B2 · kind B2 · utility

5Cited by

1References

15Claims

0Family size

Assignee

Sasol North America, Inc. · US

Inventors

Steven Baxter · Ponca City, US
Jeff Fenton · Ponca City, US
Reiner Glockler · Wasserburg am Inn, DE

Key dates

Filing date	Feb 12, 2014
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Feb 12, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B28/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A composition comprising cement and nano-sized crystalline particles of boehmite alumina or nano-sized crystalline particles of boehmite alumina which have been modified by the inclusion of silicon oxide, calcium oxide, or magnesium oxide. The boehmite alumina has an average crystallite size from about 2 nm to about 80 nm and a content of non-crystalline alumina of less than about 25 mol percent based on total aluminum.

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