GB661913A - Process for dyeing paper - Google Patents

Process for dyeing paper

Info

Publication number
GB661913A
GB661913A GB6761/49A GB676149A GB661913A GB 661913 A GB661913 A GB 661913A GB 6761/49 A GB6761/49 A GB 6761/49A GB 676149 A GB676149 A GB 676149A GB 661913 A GB661913 A GB 661913A
Authority
GB
United Kingdom
Prior art keywords
mixed
dyestuff
rosin size
aluminium sulphate
pyrogene
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
GB6761/49A
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 Schweiz AG
Original Assignee
Ciba AG
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 Ciba AG filed Critical Ciba AG
Publication of GB661913A publication Critical patent/GB661913A/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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents

Abstract

Paper is dyed by incorporating in the pulp a water-soluble addition or condensation product of a sulphur dyestuff and a salt of sulphurous acid. The dyestuff is advantageously added in the form of a neutral or weakly alkaline solution to the paper pulp before, together with, or after the addition of substances used for sizing, e.g. rosin size. The size and the dyestuff may then be fixed by means of aluminium sulphate or a salt of another polyvalent metal, particularly a ferric or chromic salt. The usual reducing agents for sulphur dyes are not required. In examples: (1) ground unbleached sulphite cellulose is mixed in a hollander with rosin size, Pyrogene Deep Black D which has been rendered soluble by means of bisulphite, and aluminium sulphate; (2) bleached sulphite cellulose is mixed in the hollander with rosin size, Pyrogene Green 3G rendered soluble by means of bisulphite and aluminium sulphate; (3) a mixture consisting of unbleached sulphite cellulose and wood pulp is mixed with the dyestuff obtained by sulphurizing potassium 2,6 - dinitrotoluene - 4 - sulphonate rendered soluble by means of neutral sulphite, rosin size and aluminium sulphate; and (4) ground unbleached sulphite cellulose is mixed in a hollander with rosin size, Pyrogene Deep Black D rendered soluble by the action of bisulphite, and ferric chloride. Specifications 5168/01, [Class 2], 2290/09, [Class 15 (ii)], and 528,118 are referred to.
GB6761/49A 1948-03-12 1949-03-11 Process for dyeing paper Expired GB661913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH661913X 1948-03-12

Publications (1)

Publication Number Publication Date
GB661913A true GB661913A (en) 1951-11-28

Family

ID=4526966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6761/49A Expired GB661913A (en) 1948-03-12 1949-03-11 Process for dyeing paper

Country Status (3)

Country Link
CH (1) CH265208A (en)
FR (1) FR982841A (en)
GB (1) GB661913A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022287A1 (en) * 2009-08-21 2011-02-24 The Procter & Gamble Company Web materials comprising brown ink
WO2012057790A1 (en) 2010-10-29 2012-05-03 Hewlett-Packard Development Company, L.P. Paper enhancement treatment with decreased calcium chloride

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022287A1 (en) * 2009-08-21 2011-02-24 The Procter & Gamble Company Web materials comprising brown ink
WO2012057790A1 (en) 2010-10-29 2012-05-03 Hewlett-Packard Development Company, L.P. Paper enhancement treatment with decreased calcium chloride
EP2633121A1 (en) * 2010-10-29 2013-09-04 Hewlett-Packard Development Company, L.P. Paper enhancement treatment with decreased calcium chloride
EP2633121A4 (en) * 2010-10-29 2014-01-08 Hewlett Packard Development Co Paper enhancement treatment with decreased calcium chloride
US9056515B2 (en) 2010-10-29 2015-06-16 Hewlett-Packard Development Company, L.P. Paper enhancement treatment with decreased calcium chloride

Also Published As

Publication number Publication date
FR982841A (en) 1951-06-15
CH265208A (en) 1949-11-30

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