URBANREC

A method for the wet production of a superabsorbent material, comprising the formation of an aqueous saline solution with a concentration of 0.01 - 4.5 N of ionic salt and pH from 0 to 6.0 or from 8.0 to 14.0 by the addition of a strong acid or strong base; the dispersion in the saline solution of a water superabsorbent polymer (SAP) component selected among the polymers comprising at least one acidic resin not completely neutralized in case of acidic saline solution and/or comprising at least one basic resin not completely neutralized in case of basic saline solution; the implementation of a first web by stratification and deposition under vacuum suction onto the mesh screen belt deposition section of the SAP dispersion; washing out of the web with basic solution up to the desired level of neutralization of the acidity for SAP dispersions in acidic saline solutions or with acidic solution up to the desired level of neutralization of the basicity for SAP dispersions in basic saline solutions; washing out of the web with water and suction and drying up of the web. The relationship between pH and salt concentration is such that it causes a water absorption in the SAP equal to or less than about 30.00 gH2O/gSAP. The absorbent material according to the invention is used for the production of paper and kitchen towels; toilet paper and facial tissues; absorbent hygiene products, baby diapers, feminine hygiene towels, panty liners, diapers for incontinent adults, mattress covers for beds per incontinent subjects and operating room beds, underarm liners; layers of paper or absorbent mats for the food industry; under food containers to absorb liquid drainage from meat, fish or vegetable; layers of paper or absorbent mats for pets; layers of absorbent paper or absorbent mats for use in coffins; medical products to absorb exudates.

» Number: MX2018008593A (A)

» Publication Date: 15/08/2018

» Applicant: GIANFRANCO PALUMBO?[IT]

» Inventor: GIANFRANCO PALUMBO?[IT]

» More Information

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