Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Particular raw cellulosic materials
Reexamination Certificate
2009-11-17
2011-12-20
Daniels, Matthew (Department: 1741)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Particular raw cellulosic materials
C162S078000, C162S082000
Reexamination Certificate
active
08080129
ABSTRACT:
This invention reports an environmentally benign method of delignifying bleaching sequences to gain more than 80% ISO brightness for alkaline sulfite-anthraquinone (AS/AQ) wheat straw pulp comprising of AOPsYP0, AOPsEP0and AOPsP0P1sequences that yielded surprising results in the field of pulp and paper technology; wherein the selectivity of sequences resulted in the protection of α-cellulose from degradation, produced significant drop in acid soluble lignin and yielded low viscosity losses reducing ecological impact of effluent load.
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Dupont OXONE Monopersulfate Compound, Oct. 2008.
Mah-e Kamil et al., Pulping of Wheat Straw using Sulfite Process: An experimental Study, 2009, Jorunal of Faculty of Engineering and Technology (pu.edu.pk), vol. 16 No. 1, abstract only.
Cheema Kausar Jamal
Hameed Sahibzada Rashad
Ishtiaq-Ur-Rehman Ishtiaq-Ur-Rehman
Mateen Bushra
Yaqoob Naila
Calandra Anthony
Daniels Matthew
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