FR2213373A1 - Wet and dry strength improvement of paper - using (bi)sulphite-modified melamine and formaldehyde condensates prepd. with specified reactant ratios - Google Patents

Wet and dry strength improvement of paper - using (bi)sulphite-modified melamine and formaldehyde condensates prepd. with specified reactant ratios

Info

Publication number
FR2213373A1
FR2213373A1 FR7345804A FR7345804A FR2213373A1 FR 2213373 A1 FR2213373 A1 FR 2213373A1 FR 7345804 A FR7345804 A FR 7345804A FR 7345804 A FR7345804 A FR 7345804A FR 2213373 A1 FR2213373 A1 FR 2213373A1
Authority
FR
France
Prior art keywords
sulphite
paper
hcho
prepd
wet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7345804A
Other languages
French (fr)
Other versions
FR2213373B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of FR2213373A1 publication Critical patent/FR2213373A1/en
Application granted granted Critical
Publication of FR2213373B3 publication Critical patent/FR2213373B3/fr
Granted legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

Auxiliary agents for improving the mechanical props. esp dry and wet-strength, of paper, cardboard and other paper pulp prods. consist of bisulphite- and/or sulphite-modified melamine/HCHO condensates (I), prepd. by condensing (i) 1 mole melamine, opt. mixed with (ii) 1,4-8 moles HCHO or a corresp. molar amt. of an HCHO-yielding cpd. and (iii) 0.22-1 moles bisulphite and/or sulphite, or corresp. molar amt. of a (bi)sulphite-yielding cpd. Mol. ratio of HCHO: (bi)sulphite is 5-30 : 1, pref. 6-16:1. Reaction is continued to a degree of condensation corresp. to a viscosity of 4-400 mPa, measured at 20 degrees C in 20% aq. soln. (I) is pref. used in aq. compsns. contg. 1-25 wt.% (I), at pH 7.5-10, and may be applied to paper in concns. of 0.5-5, pref. 1-4 wt. % (calc. as solids w.r.t. dry paper compsn).
FR7345804A 1973-01-10 1973-12-20 Wet and dry strength improvement of paper - using (bi)sulphite-modified melamine and formaldehyde condensates prepd. with specified reactant ratios Granted FR2213373A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732301035 DE2301035A1 (en) 1973-01-10 1973-01-10 ADDITIVES FOR WET AND DRY STRENGTH OF PAPER

Publications (2)

Publication Number Publication Date
FR2213373A1 true FR2213373A1 (en) 1974-08-02
FR2213373B3 FR2213373B3 (en) 1976-10-15

Family

ID=5868678

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7345804A Granted FR2213373A1 (en) 1973-01-10 1973-12-20 Wet and dry strength improvement of paper - using (bi)sulphite-modified melamine and formaldehyde condensates prepd. with specified reactant ratios

Country Status (6)

Country Link
JP (1) JPS49100313A (en)
AT (1) ATA13374A (en)
AU (1) AU6403273A (en)
DE (1) DE2301035A1 (en)
FR (1) FR2213373A1 (en)
IT (1) IT1008119B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2563909B2 (en) * 1986-10-29 1996-12-18 日本化成 株式会社 Pulp and pulp manufacturing method

Also Published As

Publication number Publication date
AU6403273A (en) 1975-07-03
IT1008119B (en) 1976-11-10
ATA13374A (en) 1975-10-15
FR2213373B3 (en) 1976-10-15
JPS49100313A (en) 1974-09-21
DE2301035A1 (en) 1974-07-18

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Legal Events

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