中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.022 seconds)

    14.
    发明专利
    未知

    公开(公告)号：DE19930525A1

    公开(公告)日：2001-01-04

    申请号：DE19930525

    申请日：1999-07-01

    Applicant: BASF AG

    Inventor： BIEDERMANN NORBERT ,  WEINKOETZ STEPHAN ,  SCHERR GUENTER ,  WOLF FRANZ ,  LEHMANN GUNTER

    IPC: B27N3/00 ,  C08G12/32 ,  C08G12/36 ,  C08L61/24 ,  C08L61/28 ,  C08L97/02 ,  B27N3/04 ,  B27N1/00

    Abstract: The invention relates to a method for the production of fiberplates, whereby I. Cellulose-containing fibers are glued with an aqueous glue solution, whereby the aqueous glue solution contains the following: a) in case of a glue solution, (a) an aliphatic polyamine having at least 3 groups selected from the group consisting of primary and secondary amino groups, which have a mean molar weight ranging from 600 to 1000000 g/mol and, excepting the tertiary amino groups, are substantially free of other functional groups (polyamine P); or b) in case of a glue solution, (b) a mixture consisting of polyamine P and an aminoplast resin (b) consisting of b1) formaldehyde; b2) a compound (b2) selected from the group consisting of urea and melamine, whereby the proportion of the amino groups of compound (b2) in relation to the formaldehyde ranges from 0.4: 1 to 3: 1; b3) and optionally up to 0.2 mol per mol of formaldehyde of another compound (b3), which is capable of reacting with the formaldehyde in a polycondensation reaction; b4) and optionally up to 0.2 mol of amino groups of compounds (b2) of another compound (b4), which is capable of reacting with the amino groups in a polycondensation reaction; or c) in case of a glue solution, (c) an aminoplast resin (c) consisting of c1) formaldehyde; c2) a compound (c2) selected from the group consisting of urea and melamine, whereby the proportion of the amino groups of compound (c2) in relation to the formaldehyde ranges from 0.3: 1 to 3.0: 1; c3) a polyamine P, whereby the proportion of the sum of the primary, secondary and tertiary amino groups of polyamine P in relation to the sum of the primary amino groups of compound (c2) ranges from 0.0005: 1 to 2:1; c4) and optionally up to 0.2 mol per mol of formaldehyde of an another compound (c4), which is capable of reacting with formaldehyde in a polycondensation reaction; c5) and optionally up to 0.2 mol per mol of amino groups of compounds (c2) of another compound (c5), which is capable of reacting with the amino groups in a polycondensation reaction. The humidity of the cellulose-containing fibers or the water content of the glue is adjusted in such a way that the humidity of the glued cellulose-containing fibers does not exceed 150 %; and II. Compacting the glued cellulose-containing fibers produced according to step (I) at a high temperature to form the fiberplates.

Patent Agency Ranking