Matches 1 - 6 out of 6


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US20050051288 Extended retention and medium consistency pulp treatment  
Treatment of digested or O2 delignified cellulosic pulp in a chlorine dioxide (Do) delignification stage, preceding bleaching of the pulp, at a medium pulp consistency for an extended period of...
US20050028953 Methods for making carboxylated pulp fibers  
An apparatus for carboxylating wood pulp which utilizes the wood pulp bleach plant and the method of carboxylating the pulp which takes place in the bleach plant.
US20090101296 Near Neutral Chlorine Dioxide Bleaching of Pulp  
Final chlorine dioxide bleaching of lignocellulosic materials is most effective at a near-neutral pH but present industrial practice typically targets a final pH of between 3.5 and 4.0 because of...
US20060070711 Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture  
A high pH and a low pH process for reducing the degree of polymerization of a pulp having a hemicellulose content of at least 7%. The high pH is greater than 8, and the low pH process is 2 to 8....
US20110042022 Process of chlorine dioxide bleaching of chemical pulps using magnesium hydroxide or magnesium oxide  
The present invention provides an improved process for chlorine dioxide bleaching of chemical pulps in an aqueous suspension, which uses magnesium hydroxide or magnesium oxide. The process...
US20100051216 PROCESS FOR THE CONTROL OF PITCH  
The present invention relates to a process for the control of pitch in an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted...
Matches 1 - 6 out of 6