Title:
FLUORINATED ACID COMPOUNDS, COMPOSITIONS AND METHODS OF USE
Document Type and Number:
WIPO Patent Application WO/2018/104796
Kind Code:
A4
Abstract:
Novel acid-based chemistries that can be used in various cleaning, de-scaling, rust- removal, brightening, etching and other similar applications, including, but not limited to, those based upon hexafluorozirconic acid and other additives, such as urea in some applications, which are effective for a wide range of applications, while avoiding the health, safety and environmental issues that are often associated with the use of hydrochloric acid and other toxic chemistries.
Inventors:
THOMSON RODNEY (CA)
Application Number:
PCT/IB2017/001707
Publication Date:
August 02, 2018
Filing Date:
December 01, 2017
Export Citation:
Assignee:
WIN CHEMICALS LTD (CA)
VITECH INT INC (CA)
VITECH INT INC (CA)
International Classes:
C23G1/02; C02F5/08
Attorney, Agent or Firm:
ARKIN, Gary (CA)
Download PDF:
Claims:
| AMENDED CLAIMS received by the International Bureau on 15 June 2018 (15.06.18) 1. An acid-based cleaning composition for descaling and dissolution of complex silicates which does not release hydrofluoric acid comprising a combination of a hexafluorozirconic acid, and an acid salt of the hexafluorozirconic acid. 2. The acid-based cleaning composition of claim 1 , wherein the acid salt comprises the reaction product of the hexafluorozirconic acid and a weak base selected from the group consisting of urea, substituted ureas, short chained aliphatic amines, short chained olefinic amides, aromatic pyroUes, pyrazoles and indoles. |