Method of making paper

Details Method of making paper Method of making paper

1997-05-19

1999-05-04

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621683, 1621816, 162183, D21H 2110

Patent

active

059001160

ABSTRACT:
A method of coagulating particulates, as in papermaking or water clarification applications, for example, is provided wherein a zeolite crystalloid coagulant is added to water containing the solid matter, a source of multivalent cations, and a cationic acrylamide polymer. The zeolite crystalloid coagulant is preferably prepared by admixing aqueous sodium silicate and sodium aluminate solutions to form a reaction mixture and allowing a reaction to proceed for a sufficient time to form a zeolite crystalloid coagulant particles having particle sizes of at least about 4 nm before terminating the reaction.

REFERENCES:
patent: 4213874 (1980-07-01), Williams et al.
patent: 4305781 (1981-12-01), Langley et al.
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4753710 (1988-06-01), Langley et al.
patent: 4954220 (1990-09-01), Rushmere
patent: 4980025 (1990-12-01), Andersson et al.
patent: 5176891 (1993-01-01), Rushmere
patent: 5185206 (1993-02-01), Rushmere
patent: 5312595 (1994-05-01), Moffett et al.
patent: 5470435 (1995-11-01), Rushmere
patent: 5482693 (1996-01-01), Rushmere et al.
patent: 5501774 (1996-03-01), Burke
patent: 5503820 (1996-04-01), Moffett et al.
patent: 5543014 (1996-08-01), Rushmere et al.
patent: 5584966 (1996-12-01), Moffett
patent: 5596530 (1997-01-01), Moffett
patent: 5681480 (1997-10-01), Langley et al.
Sneed, M. Cannon and Maynard, J. Lewis, General Inorganic Chemistry. (D. Van Norstrand Co., Inc., 1943) pp. 711-713.
Pummer, von H., Selektive Fullstoffretention and optische Eigenschaften des Papiers. (1973) pp. 417-422.
Cotton, F. Alberto and Wilkinson, Geoffrey, Advanced Inorganic Chemistry. (John Wiley & Sons, 1980) pp. 389-392.
McGraw-Hill Encyclopedia of Chemistry. (McGraw-Hill Book Co., 1983) p. 618.
Moffett, Robert H., On-site production of a silica-based microparticulate retention and drainage aid. Tappi Journal, vol. 77, No. 12 (Dec. 1994), pp. 133-138.
Kirk-Othmer Encyclopedia of Chemical Technology. (1995 ed.), vol. 16, pp. 888-925.
Olphen H. Van, An Introduction to Clay Colloid Chemistry. (John Wiley & Sons, Date Unknown), pp. 57-68.
Colloidal Silica-Concentrated Sols. (Date Unknown), pp. 407-410.
Non-Transition Elements. (Date Unknown), pp. 472-474.
International Preliminary Examination Report dated Oct. 19, 1998 in International Application PCT/US98/09919.

Affiliated with

Also associated with

Rating

Method of making paper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making paper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1867920