C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/12 (2006.01) C11D 3/10 (2006.01) C11D 11/00 (2006.01)
Patent
CA 2222439
The invention provides a convenient process for making builder material which has substantially improved performance and is significantly less expensive than previous builders. The builder material has improved performance in that it unexpectedly has a high calcium ion exchange capacity and rate, and is easy to handle, process and disperse in washing solutions. In its broadest aspect, the invention is directed to a process involving converting starting materials (via any means including but not limited to heating and precipitating) to a builder material having at least one crystalline microstructure including a carbonate anion, calcium cation and at least one water-soluble cation. The microstructure should have a sufficient number of anions and cations so as to be "balanced" or "neutral" in charge.
Cette invention concerne un procédé pratique de fabrication d'un adjuvant qui possède un rendement sensiblement amélioré et qui est bien moins coûteux que les adjuvants actuels. Cet adjuvant possède un meilleur rendement en ce sens qu'il possède une capacité et une rapidité d'échange d'ions calcium étonnamment élevées, et qu'il est facile à manipuler, à traiter et à disperser dans des solutions de lavage. De la manière la plus générale, cette invention concerne un procédé consistant à transformer des produits de départ (par quelque moyen que ce soit, y compris le chauffage et la précipitation, sans toutefois se limiter à ces procédés) en un adjuvant ayant au moins une microstructure cristalline comprenant un anion de carbonate, un cation de calcium et au moins un cation soluble dans l'eau. Cette microstructure doit posséder un nombre suffisant d'anions et de cations de manière à avoir une charge "équilibrée" ou "neutre".
Bohlen David Scott
Capeci Scott William
Pancheri Eugene Joseph
Weitzel Rose Marie
Kirby Eades Gale Baker
The Procter & Gamble Company
The University Of North Carolina At Chapel Hill
LandOfFree
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