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    PRODUCTION OF PAPER, CARD AND BOARD
    21.
    发明专利
    PRODUCTION OF PAPER, CARD AND BOARD 未知

    公开(公告)号：CA2881868A1

    公开(公告)日：2014-02-27

    申请号：CA2881868

    申请日：2013-07-31

    Applicant: BASF SE

    Inventor： ESSER ANTON ,  HAHNLE HANS-JOACHIM

    IPC: D21H17/38 ,  D21H17/44 ,  D21H17/45 ,  D21H17/67 ,  D21H21/06 ,  D21H21/20 ,  D21H23/28

    Abstract: The invention relates to a method for producing paper, paperboard and cardboard, comprising the dehydration of a paper material comprising filler material, which contains at least one water-soluble polymer, forming sheets in the wire section and subsequent pressing of the paper in the press section, wherein the at least one water-soluble polymer is dosed to a paper material having a fiber concentration in the range of 20 to 40 g/l, the paper material is then thinned to a fiber concentration in the range of 5 to 15 g/l, the thinned paper material is dehydrated, forming a sheet, and the sheet is pressed in the press section to a solids content G(x) wt % or greater and G(x) is calculated according to G(x) = 48 + (x -15)·0.4, where x stands for the numerical value of the filler material content of the dry paper, paperboard or cardboard (in wt %) and G(x) stands for the numerical value of the minimum solids content (in wt %) on which the sheet is pressed, wherein the water-soluble polymer is obtainable via Hofmann reduction of a polymer comprising acrylamide and/or methacrylamide and optionally subsequent post-curing.

    Método para producir papel, cartón piedra y cartón con alta resistencia en seco
    22.
    发明专利
    Método para producir papel, cartón piedra y cartón con alta resistencia en seco 未知

    公开(公告)号：ES2393909T3

    公开(公告)日：2012-12-28

    申请号：ES10703443

    申请日：2010-02-04

    Applicant: BASF SE

    Inventor： ESSER ANTON ,  NIEBERLE JOERG

    IPC: D21H17/42 ,  D21H17/44 ,  D21H21/18

    Abstract: Método para producir papel, cartón piedra y cartón con alta resistencia en seco mediante la adición de un polímero catiónico hidrosoluble de un polímero aniónico a una pulpa de papel, la deshidratación de la pulpa de papel y el secado de los productos de papel, caracterizado porque como polímero aniónico se emplea una dispersión acuosa de al menos un látex aniónico y al menos un almidón degradado que tiene un peso molecular promedio Mw de 1 000 a 65 000 g/mol.

    25.
    发明专利
    未知

    公开(公告)号：DE502005003567D1

    公开(公告)日：2008-05-15

    申请号：DE502005003567

    申请日：2005-03-14

    Applicant: BASF SE

    Inventor： ESSER ANTON ,  BLUM RAINER ,  KUHN JOACHIM ,  LEDUC MARC ,  HEMEL RALF

    IPC: D21H17/34 ,  D21H17/37 ,  D21H17/56 ,  D21H21/02

    Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.

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