FIELD: pulp and paper industry.
SUBSTANCE: invention relates to pulp and paper industry and relates to paper and a production method thereof. Paper is made by treatment of aqueous suspension of fibrous mass with a resin of functionalised aldehyde polymer and polyamidodiamino-epichlorohydrin resin. polyamidodiamino-epichlorohydrin resin is obtained via by first reacting epichlorohydrin with polyamidoamine to form aminochlorohydrin, which is then converted to azetidine, and obtained polyamidodiamino-epichlorohydrin resin has molar content ratio of epichlorohydrin to amine molar content of about 0.01 to 0.4, and obtained polyamidodiamino-epichlorohydrin resin has azetidine content of approximately 40 % or less.
EFFECT: invention provides paper with improved strength.
13 cl, 1 dwg, 7 tbl, 12 ex
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