Patent · US Active

Fast dissolving hydroxyalkyl guar derivatives

US8017560B2 · kind B2 · utility

0Cited by

10References

20Claims

0Family size

Assignee

LAMBERTI SPA · IT

Inventors

Ugo Pfeiffer · Milano, IT
Morano Gatto · Parabiago, IT
Mauro Tenconi · Gazzada, IT
Laura Vigano · Parabiago, IT
Andrea Balestrini · Sugar Land, US
Giuseppe Li Bassi · Varese, IT

Key dates

Filing date	Jul 29, 2005
Grant date	Sep 13, 2011
Priority date	—
Expiry date	Apr 11, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/90
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to hydrophobically modified hydroxyalkyl guar derivatives which dissolve rapidly in water, having a hydroxyalkyl molar substitution between 0.2 and 2.5 and containing hydrophobic groups comprising C10-C32 alkyl chains, to the procedure for their preparation and to their use in the formulation of well fluids.

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