
{"publication_number": "US-2011114273-A1", "abstract": "this invention reports an environmentally benign method of delignifying bleaching sequences to gain more than 80 % iso brightness for alkaline sulfite - anthraquinone wheat straw pulp comprising of aopsyp 0 , aopsep 0 and aopsp 0 p 1 sequences that yielded surprising results in the field of pulp and paper technology ; wherein the selectivity of sequences resulted in the protection of \u03b1 - cellulose from degradation , produced significant drop in acid soluble lignin and yielded low viscosity losses reducing ecological impact of effluent load .", "application_number": "US-61985309-A", "description": "the letters , abbreviation or terms used to express bleaching and / or other embodiments are described as follows : as / aq \u2014 alkaline sulfite - anthraquinone ; as / aq wheat straw pulp used for this invention was prepared under conditions described in table i : table i as / aq pulping conditions chemical doses on oven dried pulp pressure temp . time 14 . 0 % sodium sulphite 145 - 160 psi 180 - 185 \u00b0 c . 45 min . 0 . 05 % anthraquinone 0 . 025 % surfactant consistency \u2014 concentration of pulp suspensions in water calculated as : [ percent consistency ={( weight of oven - dried pulp specimen / net weight of original pulp specimen )\u00d7 100 