GB1268114A - Method for improving water drainage from paper web on a wire-screen of a paper machine - Google Patents

Method for improving water drainage from paper web on a wire-screen of a paper machine

Info

Publication number
GB1268114A
GB1268114A GB28796/69A GB2879669A GB1268114A GB 1268114 A GB1268114 A GB 1268114A GB 28796/69 A GB28796/69 A GB 28796/69A GB 2879669 A GB2879669 A GB 2879669A GB 1268114 A GB1268114 A GB 1268114A
Authority
GB
United Kingdom
Prior art keywords
paper
polyacrylamide
screen
alum
rosin
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.)
Expired
Application number
GB28796/69A
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.)
Seiko Kagaku Kogyo Co Ltd
Original Assignee
Seiko Kagaku Kogyo Co Ltd
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 Seiko Kagaku Kogyo Co Ltd filed Critical Seiko Kagaku Kogyo Co Ltd
Publication of GB1268114A publication Critical patent/GB1268114A/en
Expired 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
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • 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
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates

Landscapes

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

Abstract

1,268,114. Papermaking. SEIKO KAGAKU KOGYO CO. Ltd. 6 June, 1969 [12 June, 1968], No. 28796/69. Heading D2A. The drainage of water from a paper web on the wire screen of a paper-making machine is improved by adding to the slurry an aqueous solution of modified polyacrylamide, stirring the mixture and feeding the mixture to the screen before the effect of the polymer disappears, in about ten minutes. The polymer is made by subjecting a water-soluble polyacrylamide having an average molecular weight between 100,000 and 600,000 to the Hoffmann degradation until more than 15% of the amide groups have been degraded to amine groups, and is used in solution at a pH between 3.5 and 5.5 in an amount equivalent to 0.01 to 0.1% of degraded polyacrylamide based on the dry weight of the pulp. In Example 1, the effect of this drainage aid is compared with those of unmodified polyacrylamide, modified acrylamide in which 5% of the amide groups have been converted, and polyethylenimine. In Example 2, a multiply paperboard is made, the first ply being of fresh pulp and sized with rosin-alum, the last of mixed waste paper also sized with rosin-alum, the others of waste paper and unsized; here again the performance of the present drainage aid is compared with that of polyethyleneimine.
GB28796/69A 1968-06-12 1969-06-06 Method for improving water drainage from paper web on a wire-screen of a paper machine Expired GB1268114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4037368 1968-06-12

Publications (1)

Publication Number Publication Date
GB1268114A true GB1268114A (en) 1972-03-22

Family

ID=12578829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28796/69A Expired GB1268114A (en) 1968-06-12 1969-06-06 Method for improving water drainage from paper web on a wire-screen of a paper machine

Country Status (3)

Country Link
US (1) US3619358A (en)
DE (1) DE1929738A1 (en)
GB (1) GB1268114A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535518B1 (en) * 1971-06-19 1980-09-13
JPS6021999A (en) * 1983-07-11 1985-02-04 日東紡績株式会社 Filterability enhancer
FR3016363B1 (en) 2014-01-15 2017-05-26 Snf Sas AQUEOUS SOLUTION OF ACRYLAMIDE-DERIVED CATIONIC COPOLYMERS, PROCESS FOR PREPARATION AND USE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729560A (en) * 1953-06-22 1956-01-03 American Cyanamid Co Wet strength paper containing aminoaliphatic chain polymer resins
US2890978A (en) * 1957-10-02 1959-06-16 American Cyanamid Co Paper of high dry strength and low wet strength

Also Published As

Publication number Publication date
US3619358A (en) 1971-11-09
DE1929738A1 (en) 1970-01-08

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