Applications of sulfamic acid or sulfamate, combination with ammonium salt and/or amine or other halogen-containing biocides to papermaking field

• Main Authors: LUTH ELISA M, WEN LITU, COOPER ANDREW J, RICE LAURA E, LU YUMEI, SHEN JIANKUN
• Format: Patent
• Language: Chinese; English
• Published: 21.05.2019
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; METALLURGY; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses applications of sulfamic acid or sulfamate, a combination of ammonium salt and/or amine or other halogen-containing biocides to the papermaking field. The invention discloses acomposition and an application method thereof; the composition comprises a halogen source, urea, an additional halogen stabilizer excluding urea and alkali with an optional concentration enough to provide the pH greater than 10 to the composition; optionally, the composition excludes a stabilized bromine compound. In addition, the invention further discloses a method for reducing the biological activity in the process flow. The method comprises the step of providing the composition to the process flow. Through the optimal mixing ratio of halogen to the stabilizer and the mixing ratio of the ammonium salt to the sulfamic acid or the sulfamate, not only is the efficacy of the composition used as the biocide increased, but also the harmful effect on other chemicals existing in the water flowis avoided. 本发明公开了氨基磺酸或其盐