C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 35/10 (2006.01) D21H 17/68 (2006.01) D21H 21/10 (2006.01)
Patent
CA 2304709
The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the addition of a cationic coagulant. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.
L'invention concerne une composition d'agent de rétention de borosilicate et un procédé qui permet d'améliorer la production de papier par adjonction de borosilicate. Le borosilicate peut être utilisé associé à un floculant synthétique de poids moléculaire élevé et/ou à de l'amidon, avec ou sans adjonction d'un coagulant cationique. Le matériau constitué de borosilicate est de préférence un borosilicate colloïdal. L'invention concerne également des procédés qui permettent de préparer ledit matériau.
Keiser Bruce A.
Whitten James E.
Marks & Clerk
Nalco Chemical Company
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