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US 6,387,212 B1Granted
Process for obtaining fibers integral with calcium carbonate particles
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorRichard Christian
Life of this patent
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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.
Claims20
Process for obtaining fibers integral with calcium carbonate particles, which comprises:
- preparing a first composition comprising calcium bicarbonate;
- preparing a second composition comprising calcium hydroxide;
- and
- mixing the first and second compositions in the presence of said fibers thereby precipitating calcium carbonate particles in contact with at least some of said fibers.
1 more element
Dependencies are inferred from the claim text.