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GB494253A - Improvements in or relating to the esterification of paper - Google Patents

Improvements in or relating to the esterification of paper

Info

Publication number
GB494253A
GB494253A GB1168737A GB1168737A GB494253A GB 494253 A GB494253 A GB 494253A GB 1168737 A GB1168737 A GB 1168737A GB 1168737 A GB1168737 A GB 1168737A GB 494253 A GB494253 A GB 494253A
Authority
GB
United Kingdom
Prior art keywords
paper
treatment
cellulose
toluene
minutes
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
GB1168737A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1168737A priority Critical patent/GB494253A/en
Priority to FR836696D priority patent/FR836696A/en
Priority to DEI4772D priority patent/DE909653C/en
Publication of GB494253A publication Critical patent/GB494253A/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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

The tensile strength of paper when in wet condition is increased by treating the paper with an esterifying agent so as to form an ester of cellulose with a carboxylic acid containing 2-5 carbon atoms, the temperature of treatment being greater than 60 DEG C., the quantity of esterifying agent being capable of fully esterifying the paper, and the duration of the treatment being at least 5 minutes but limited so that the surface layers only of the fibres constituting the paper are esterified. The esterification treatment is not preceded by any treatment with carboxylic acid. In an example, paper strips are immersed in a solution containing acetic acid, acetic anhydride, toluene, and zinc chloride, at a temperature of 100-120 DEG C. for 5-20 minutes. Petrol, benzine, benzene, carbon tetrachloride, or other diluent may be used instead of toluene. Propionic, butyric or valeric esters of cellulose, instead of cellulose acetate, may be formed on the paper.
GB1168737A 1937-04-23 1937-04-23 Improvements in or relating to the esterification of paper Expired GB494253A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1168737A GB494253A (en) 1937-04-23 1937-04-23 Improvements in or relating to the esterification of paper
FR836696D FR836696A (en) 1937-04-23 1938-04-15 Esterification process of paper and resulting products
DEI4772D DE909653C (en) 1937-04-23 1938-04-24 Process for the esterification of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1168737A GB494253A (en) 1937-04-23 1937-04-23 Improvements in or relating to the esterification of paper

Publications (1)

Publication Number Publication Date
GB494253A true GB494253A (en) 1938-10-24

Family

ID=9990834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1168737A Expired GB494253A (en) 1937-04-23 1937-04-23 Improvements in or relating to the esterification of paper

Country Status (3)

Country Link
DE (1) DE909653C (en)
FR (1) FR836696A (en)
GB (1) GB494253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015537A (en) * 1956-04-26 1962-01-02 Eastman Kodak Co Paper having improved characteristics and its preparation
US3094431A (en) * 1961-03-22 1963-06-18 Koppers Co Inc Process of acetylating wood
WO1997034044A1 (en) * 1996-03-15 1997-09-18 Eastman Chemical Company A method for incorporating cellulose esters into cellulose by immersing cellulose in an acid-dope solution

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764379C (en) * 1939-07-13 1954-05-10 Papierfabrik G M B H Vorm Brue Process for the partial acetylation of wood cellulose
DE1056916B (en) * 1957-02-07 1959-05-06 Schickedanz Ver Papierwerk Process for the production of hydrophilic, temporary, water-resistant fleeces
DE1184201B (en) * 1958-03-31 1964-12-23 Hercules Powder Co Ltd Papermaking process
BE586432A (en) * 1959-01-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015537A (en) * 1956-04-26 1962-01-02 Eastman Kodak Co Paper having improved characteristics and its preparation
US3094431A (en) * 1961-03-22 1963-06-18 Koppers Co Inc Process of acetylating wood
WO1997034044A1 (en) * 1996-03-15 1997-09-18 Eastman Chemical Company A method for incorporating cellulose esters into cellulose by immersing cellulose in an acid-dope solution

Also Published As

Publication number Publication date
DE909653C (en) 1954-04-22
FR836696A (en) 1939-01-24

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