Process for preventing the separation of resins in paper making

Details Process for preventing the separation of resins in paper making Process for preventing the separation of resins in paper making

D - Textiles, Paper

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D21H 17/00 (2006.01) D21C 9/08 (2006.01) D21H 17/07 (2006.01) D21H 17/10 (2006.01) D21H 21/02 (2006.01)

Patent

CA 1079010

ABSTRACT OF THE DISCLOSURE The present invention provides in the production of paper, cardboard or paperboard from a resin containing pulp or a mechanical wood pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic-acid compound having the general formula Image wherein R1 is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, -(CH2)nCOOH, Image or -(CH2)nPO3H2 R2 is H, -OH, -PO3H2, Image -(CH2)n COOH, Image , Image H2O3PH2C- N-(CH2)n Image , Image

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