Process for obtaining fibers integral with calcium carbonate particles

US6387212B1 · kind B1 · utility

Assignee

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR

Inventor

• Richard Christian · Chambéry, FR

Key dates

• Filing date: Aug 9, 2000
• Grant date: May 14, 2002
• Expiry date: Aug 9, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/64
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for obtaining fibers integral with calcium carbonate particles, in which the fibers to be treated are contacted with carbon dioxide generator means and at least one composition comprising Ca++ ions capable of reacting with the carbon dioxide so as to give “in fine” a precipitation of calcium carbonate “in situ” on the fibers. Preferably, the carbon dioxide generator used is calcium bicarbonate.