Process for manufacturing bleaching compositions comprising chlorine and bromine sources and product thereof

US6037318A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Henry Cheng Na · Cincinnati, US
• Michael Frazee · Cincinnati, US
• James Charles Theophile Roger Burckett St. Laurent · Overijse, BE
• Kyle David Jones · Sharonville, US
• Marco Petri · Borgomanero, IT

Key dates

• Filing date: Nov 13, 1998
• Grant date: Mar 14, 2000
• Expiry date: Nov 13, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D7/34
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An improved process for the manufacture of alkaline bleaching compositions, especially liquid and/or gel compositions of high solubility and low abrasiveness, useful to the consumer, especially as products for hard surface cleaning, bleaching or disinfectancy. The products are made by a three-stage process and comprise particular chlorine and bromine bleach sources and particular aminofunctional materials such as low-impurity sulfamate. The process has mixing sequences and starting ingredient selections which provide unexpectedly improved product