Patent · US Expired

Oxyfluorination

US7225561B2 · kind B2 · utility

9Cited by

3References

10Claims

0Family size

Assignee

The South African Nuclear Energy Corporation Limited · ZA

Inventors

Izak deVilliers Louw · Randburg, ZA
Pieter Andries Blatt Carstens · Randburg, ZA

Key dates

Filing date	Oct 23, 2003
Grant date	Jun 5, 2007
Priority date	—
Expiry date	Oct 23, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention provides a process for the activation by oxyfluorination of at least part of a surface of a solid, which process includes exposing, under selected conditions of temperature and pressure and for a selected reaction time, at least part of the surface of the material of the solid to an oxfluorinating atmosphere. The oxyfluorinating atmosphere is a gas/vapor mixture which includes at least one fluorine-containing gas which reacts with the material of the exposed surface, at least one oxygen-containing gas which reacts with the material of the exposed surface, and water vapor. The gases in the oxyfluorinating atmosphere act to oxyfluorinate the exposed surface, thereby to activate it, and the water vapor acts to enhance the activation.

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