Matches 1 - 19 out of 19


Match Document Document Title
US20140073016 Treatment  
The present invention relates to a method for treating a lignocellulose biomass in order to dissolve the lignin therein, while the cellulose does not dissolve. The cellulose pulp obtained can be...
US20140318724 METHOD AND CHEMICAL COMPOSITIONS TO IMPROVE EFFICIENCY OF CHEMICAL PULPING  
The invention provides methods and compositions for enhancing the digestion of pulp in a chemical pulping process. The method uses ultra-low, economically feasible dosages of BH applied right...
US20140048223 METHODS FOR REMOVING HEMICELLULOSE  
A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose...
US20070131365 Method of brightness enhancement  
A method of enhancing brightness of paper made from mechanical pulps or recycled pulps that comprise: adding an effective amount of one or more chelants and one or more surfactants to a bleaching...
US20050173083 Optical brightener for aqueous high yield pulp and process for making brightened paper  
Paper is brightened by addition of a tetrakis(hydroxyalkyl) phosphonium (“THP”) salt in an amount greater than 0.04% but no more than 5% by weight in wet pulp. The amount of THP salt added is...
US20110300586 Two-Stage Process for Biomass Pretreatment  
Described herein are improved methods of pretreating lignocellulosic biomass. One aspect of the invention relates to a two-stage pretreatment process comprising a relatively low severity steam...
US20070131364 Process for treating a cellulose-lignin pulp  
A process of treating a cellulose-lignin pulp. In an ozone stage, the pulp is contacted with ozone to bleach and delignify the pulp. The ozone stage is conducted without the addition of a peroxide...
US20080110586 Process of purifying wood pulp with caustic-borate solution and recovering the purifying chemical  
Systems and methods for purifying wood pulp by caustic-borate extraction. The systems and method include a method for recovering both the caustic and borate compounds from the resultant...
US20080017337 Compositions and processes for paper production  
Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The...
US20100224333 METHOD AND CHEMICAL COMPOSITION TO IMPROVE EFFICIENCY OF MECHANICAL PULP  
The invention provides a composition of matter and a method, which enhance the process of mechanically pulping paper precursors. The composition of matter includes a small quantity of a reducing...
US20100186911 Process for Increasing the Refiner Production Rate and/or Decreasing the Specific Energy of Pulping Wood  
The present invention relates to processes for enhancing a refiner's production rate and/or reducing the specific energy consumption for a freeness target through the use of lubricant(s) or...
US20070295463 Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process  
In general, the present disclosure is directed to compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process. In one particular...
US20050155730 Method for the production of high yield chemical pulp from softwood  
The present invention relates to a novel method for the production of a high yield chemical pulp from softwood in a pulp mill by the application of a delignification catalyst in a wood...
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...
US20110214826 PROCESS OF TREATING A LIGNOCELLULOSIC MATERIAL  
A process of treating a lignocellulosic material includes a pre-extraction step in which hemicellulose is extracted from the lignocellulosic material. In one embodiment, the pre-extraction step...
US20080105392 METHOD AND COMPOSITION FOR IMPROVING FIBER QUALITY AND PROCESS EFFICIENCY IN MECHANICAL PULPING  
This invention provides a composition and method for improving a mechanical pulping process by decreasing freeness and amount of shives, providing energy and chemical savings, and enhancing...
US20120211185 COMPOSITIONS AND PROCESSES FOR PAPER  
Compositions and processes that enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process involving optical brighteners are...
US20120168102 PULPING PROCESS FOR QUALITY PROTECTION INCLUDING METHODS FOR HEMICELLULOSE EXTRACTION AND TREATMENT OF HEMICELLULOSE-EXTRACTED LIGNOCELLULOSIC MATERIALS  
A method for producing pulp by extracting hemicellulosic materials from lignocellulosic materials using water in an extraction stage, wherein the extraction stage is either a single extraction or...
US20160138219 COMPOSITIONS FOR BLEACHING PULPS AND THEIR USE  
Compositions suitable for use in the bleaching of pulps may include one or more particulate alkaline earth metal oxides or alkaline earth metal hydroxides or mixtures thereof, and one or more...

Matches 1 - 19 out of 19