GB1028758A - Improvements in or relating to paper coating compositions - Google Patents

Improvements in or relating to paper coating compositions

Info

Publication number
GB1028758A
GB1028758A GB3378164A GB3378164A GB1028758A GB 1028758 A GB1028758 A GB 1028758A GB 3378164 A GB3378164 A GB 3378164A GB 3378164 A GB3378164 A GB 3378164A GB 1028758 A GB1028758 A GB 1028758A
Authority
GB
United Kingdom
Prior art keywords
starch
pigment
cationic
binder
amount
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
GB3378164A
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.)
Ingredion Inc
Original Assignee
National Starch and Chemical Corp
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 National Starch and Chemical Corp filed Critical National Starch and Chemical Corp
Publication of GB1028758A publication Critical patent/GB1028758A/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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch

Landscapes

  • Paper (AREA)

Abstract

A paper coating composition consists essentially of an aqueous dispersion of a pigment and a starch binder, the amount of pigment being within the range of 10% to 60% by weight of the composition, and at least a portion of the said binder is a pyro-converted cationic starch (see Division C3) having a Relative Viscosity within the range 1.08 to 1.23, the amount of the pyro-converted cationic starch being at least 2% of the weight of the pigment. The pigment may be a clay. The pyro-converted cationic starch may be the sole binder or may be mixed with oxidized starch.ALSO:A starch having cationic properties, i.e. one into the molecule of which cationic groups such as primary, secondary, tertiary or quaternary amines, sulphonium or phosphonium groups have been introduced by esterification, etherification or other reactions is pyroconverted by heating until its relative viscosity as a aqueous solution at 30 DEG C. is between 1.08 a 1.23. In examples, starch is etherified with b -diethylaminoethyl chloride hydrochloride and heated at a pH below 4 to 305 DEG F.; and starch so etherified is further reacted with methyl iodide to form a quaternary ammonium compound. The process may be applied to corn starch, high amylose corn starch, waxy maize starch, tapioca starch, wheat starch, rice starch, potato starch, sago starch, sorghum or waxy sorghum starch which may be raw, oxidized, etherified or esterified but must not contain any substantial amount of dextrine, or to starch components such as amylose or amylopectin.ALSO:Sheets of paper are coated with an aqueous dispersion of a pigment and a starch binder, the amount of pigment being within the range of 10 to 60% of the composition, and at least a portion of the binder is a pyroconverted cationic starch having a relative viscosity at 30 DEG C. within the range 1.08 to 1.23, the amount of the pyroconverted cationic starch being at least 2%. of the weight of the pigment. The pigment may be a clay. The pyroconverted cationic starch may be the sole binder or may be mixed with oxidized starch. The coatings may be applied by air knife, roll coat, trailing blade or brush coating and the paper subsequently dried and finished.
GB3378164A 1963-08-19 1964-08-18 Improvements in or relating to paper coating compositions Expired GB1028758A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30314763A 1963-08-19 1963-08-19

Publications (1)

Publication Number Publication Date
GB1028758A true GB1028758A (en) 1966-05-04

Family

ID=23170730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3378164A Expired GB1028758A (en) 1963-08-19 1964-08-18 Improvements in or relating to paper coating compositions

Country Status (2)

Country Link
DE (1) DE1273974B (en)
GB (1) GB1028758A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004167A1 (en) * 1995-07-17 1997-02-06 Sveriges Stärkelseproducenter, Förening UPA Finishing agent
EP2554743A1 (en) * 2010-03-30 2013-02-06 Nippon Paper Industries Co., Ltd. Process for production of coated paper for printing purposes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE626712A (en) * 1962-12-27

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004167A1 (en) * 1995-07-17 1997-02-06 Sveriges Stärkelseproducenter, Förening UPA Finishing agent
US5994532A (en) * 1995-07-17 1999-11-30 Sveriges Starkelseproducenter, Forening Upa Finishing agent
EP2554743A1 (en) * 2010-03-30 2013-02-06 Nippon Paper Industries Co., Ltd. Process for production of coated paper for printing purposes
EP2554743A4 (en) * 2010-03-30 2014-08-27 Jujo Paper Co Ltd Process for production of coated paper for printing purposes

Also Published As

Publication number Publication date
DE1273974B (en) 1968-07-25

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