Abstract: Disclosed is a method for the delignification of lignocellulosic materials with acidic solutions of peroxymonophosphoric acid for the delignification and brightening of cellulosic pulps in bleaching; for the production of cellulosic pulps for use in paper making and in regenerated cellulose products; for enhancing the properties of recycled cellulosic fibers and for use in animal feeds and other products where removal or degradation of lignin is beneficial.

Abstract: The present invention is directed to a process for pulping of lignocellulosic materials. In the process, the ligoncellulose material is impregnated with an alkaline liquor. The lignocellulose material is maintained in the alkaline liquor for a period of time sufficient to permit infusion of the alkaline liquor and swelling of the lignocellulose material. The alkaline liquor is then drained from the lignocellulose material and the lignocellulose material may be washed with water, although such washing step is not required. The alkaline impregnated lignocellulose material is then immersed in an acidic oxidizing solution comprising peroxymonosulfate anion. The lignocellulose material is maintained in the oxidizing solution for a time sufficient to oxidize at least some of the lignin of the lignocellulose material. Thereafter, a second alkaline liquor is used to solubilize the oxidized lignin.

Abstract: A portable self-erecting tent structure makes use of a pair of flexible, coilable, resilient bands, such as spring steel bands, to form the frame of the tent. One band can be folded to nest into the other and the two nested bands can be twisted until they assume a coiled, but stable, configuration for storage or transport. The tent is self-erecting since disturbing the coiled configuration of the bands causes them to uncoil, and the resilience of the bands and the springs connecting them then causes the frame of the tent to erect itself.

Abstract: A method for the delignification of lignocellulosic materials with acidic aqueous solutions of monoperoxysulfuric acid for the production of cellulosic pulps for use in papermaking and regenerated cellulose products and for use as animal feeds and other products where removal of lignin is required.

Abstract: A method of producing salts of monoperoxysulfuric acid comprising reacting together, in the presence of a catalyst consisting of cupric ions in a concentration of at least 0.01 part per milion, (a) a solution of aerated water having a pH of from about 8 to about 14, and (b) a sulfur-containing reactant, wherein said reactant comprises sulfur dioxide or a sulfite. If a pulp is added to the reaction mixture and the cupric ion concentration is increased, the monoperoxysulfuric acid salts that are genrated in situ in the reaction mixture will simultaneously bleach the pulp.

Abstract: A process which inhibits the loss of wood substance, tall oil and chip brightness in wood chips during storage. The process involves treating wood chips with a dilute aqueous solution of formaldehyde and a phenol. This treatment effectively prevents the evolution of heat from the chips and microbial growth and thus limits chip deterioration and brightness loss while preserving tall oil. The process is also effective in preserving other moist plant-derived raw materials.

Abstract: A process which limits the loss of wood substances, brightness and tall oil in wood chips during storage. The process involves treating wood chips with a dilute aqueous solution of sodium bisulfite and a phenol. This treatment effectively prevents chip pile heating and microbial growth and thus limits chip deterioration and brightness loss while preserving tall oil. The process is also effective with any other moist plant-derived raw material.