C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 35/10 (2006.01) D21H 17/63 (2006.01) D21H 17/68 (2006.01) D21H 21/14 (2006.01)
Patent
CA 2509430
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.
Keiser Bruce A.
Whitten James E.
Marks & Clerk
Nalco Chemical Company
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