GB656907A - Improving the wet strength of paper - Google Patents

Improving the wet strength of paper

Info

Publication number
GB656907A
GB656907A GB2061848A GB2061848A GB656907A GB 656907 A GB656907 A GB 656907A GB 2061848 A GB2061848 A GB 2061848A GB 2061848 A GB2061848 A GB 2061848A GB 656907 A GB656907 A GB 656907A
Authority
GB
United Kingdom
Prior art keywords
melamine
resin
solution
acetate
paper
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
GB2061848A
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.)
JOHN KNAGGS
Portals Ltd
Original Assignee
JOHN KNAGGS
Portals 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 JOHN KNAGGS, Portals Ltd filed Critical JOHN KNAGGS
Priority to GB2061848A priority Critical patent/GB656907A/en
Publication of GB656907A publication Critical patent/GB656907A/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
    • D21H17/46—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

The wet-strength of paper is improved by impregnating waterleaf with melamine resin or melamine resin and gelatine, the resin being formed by reacting melamine acetate in aqueous solution with aqueous formaldehyde or a polymer thereof or with another aldehyde. The resin may be formed on the paper by treating it first with melamine acetate solution and then with formaldehyde &c. Sizing with a gelatine size may follow the treatment with melamine acetate or melamine resin. Alternatively, the gelatine size may be added to the melamine acetate solution, to the mixture of melamine acetate and aldehyde or to the aldehyde solution. The size may contain alum. A suitable resin bath is prepared by dissolving 17.4 lb. melamine in 100 gals. of water containing 2.18 gals. of glacial acetic acid and then adding 3.2 gals. of formalin. The resin solution may be passed through a colloidal mill with or without a dispersing agent such as turkey red oil. Specification 540,673, 587,354 and 593,423 are referred to.ALSO:The wet-strength of paper is improved by impregnating waterleaf with melamine resin or melamine resin and gelatine, the resin being formed by reacting melamine acetate in aqueous solution with aqueous formaldehyde or a polymer thereof or with another aldehyde. The paper may be treated with melamine acetate solution and then with formaldehyde &c. Tubsizing with gelatine size may follow the treatment with melamine acetate or melamine resin. Alternatively, the size may be added to the melamine acetate solution to the mixture of melamine acetate and aldehyde or to the aldehyde solution. The paper may be passed through a solution of melamine in dilute acetic acid containing formalin, pressed, cured and then sized with a gelatine size which may contain alum. The resin-containing mixture may be passed through a colloidal mill with or without a dispersing agent such as turkey red oil. Specifications 540,673, 587,354 and 593,423, [all in Group IV], are referred to.
GB2061848A 1948-08-04 1948-08-04 Improving the wet strength of paper Expired GB656907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2061848A GB656907A (en) 1948-08-04 1948-08-04 Improving the wet strength of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2061848A GB656907A (en) 1948-08-04 1948-08-04 Improving the wet strength of paper

Publications (1)

Publication Number Publication Date
GB656907A true GB656907A (en) 1951-09-05

Family

ID=10148904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2061848A Expired GB656907A (en) 1948-08-04 1948-08-04 Improving the wet strength of paper

Country Status (1)

Country Link
GB (1) GB656907A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10435843B2 (en) * 2016-02-16 2019-10-08 Kemira Oyj Method for producing paper
US10458068B2 (en) * 2016-02-16 2019-10-29 Kemira Oyj Method for producing paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10435843B2 (en) * 2016-02-16 2019-10-08 Kemira Oyj Method for producing paper
US10458068B2 (en) * 2016-02-16 2019-10-29 Kemira Oyj Method for producing paper

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