GB647582A - Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same - Google Patents

Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same

Info

Publication number
GB647582A
GB647582A GB3076146A GB3076146A GB647582A GB 647582 A GB647582 A GB 647582A GB 3076146 A GB3076146 A GB 3076146A GB 3076146 A GB3076146 A GB 3076146A GB 647582 A GB647582 A GB 647582A
Authority
GB
United Kingdom
Prior art keywords
guanidine
thiocyanate
solution
acetate
fire
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
GB3076146A
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.)
Akzo Nobel UK PLC
Original Assignee
American Viscose 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 American Viscose Corp filed Critical American Viscose Corp
Priority to GB3076146A priority Critical patent/GB647582A/en
Publication of GB647582A publication Critical patent/GB647582A/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
    • D21H21/34—Ignifugeants
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
    • 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
    • D21H17/07—Nitrogen-containing compounds
    • 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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0002—Flame-resistant papers; (complex) compositions rendering paper fire-resistant

Abstract

Hydrophilic sheet materials such as bands, films, or pellicles of regenerated cellulose, water-swellable cellulose ethers or esters, gelatine, casein, or water-swellable synthetic resins such as polyvinyl alcohol or hydrolysed polyvinyl acetate, are plasticized and also rendered fire resistant by impregnating them with a solution of guanidine thiocyanate. The solution may be aqueous or organic provided that it wets the material. In an example, a sheet or film of regenerated cellulose in the gel state is drawn through an aqueous bath containing a mixture of ammonium thiocyanate and guanidine carbonate (guanidine thiocyanate being formed by interaction), and is then squeezed and dried so that the dry film contains 17 per cent of guanidine thiocyanate. The sheet ignites when a match is applied but the flame is quickly extinguished when the match is removed. In other examples, sheets of an alkali-soluble water-insoluble cellulose ether and sheets of casein are treated with aqueous solutions of guanidine thiocyanate. The impregnating solution may contain additional softening agents, fire retardants, and hygroscopic salts or liquids, e.g. calcium chloride, lithium acetate, citrate, salicylate, or acetyl salicylate; potassium acetate, lactate, or propionate; sodium lactate, glycerine, urea malate, amylamine formate, propylamine acetate, ethylene glycol, diethylene glycol, sorbitol, mono-triethanolamine malate, mono-or tri-ethanolamine hydrogen phosphate, amino propane-2,3-diol hydrogen phosphate, formamide, alkyl guanidine phosphates, and alkylolamine guanidine phosphates. The guanidine thiocyanate may be obtained by heating ammonium thiocyanate at 180-190 DEG C. for 20-25 hours. The yield may be increased by adding thiourea to the reaction mass. Ammonia may be passed through the molten mass during heating. The salt may also be obtained by treating guanidine with thiocyanic acid, or by mixing solutions of ammonium thiocyanate and guanidine carbonate. After the hydrophilic material has been impregnated with such a solution, a reaction takes place as the material passes over the heated drying rolls, ammonia and carbon dioxide being removed by volatilization. Specifications 569,040 and 569,383 are referred to.
GB3076146A 1946-10-16 1946-10-16 Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same Expired GB647582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3076146A GB647582A (en) 1946-10-16 1946-10-16 Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3076146A GB647582A (en) 1946-10-16 1946-10-16 Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same

Publications (1)

Publication Number Publication Date
GB647582A true GB647582A (en) 1950-12-20

Family

ID=10312723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3076146A Expired GB647582A (en) 1946-10-16 1946-10-16 Hydrophilic sheet materials impregnated with a combined plasticised and fire-retardant and method of producing the same

Country Status (1)

Country Link
GB (1) GB647582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302345A (en) 1980-09-12 1981-11-24 The United States Of America As Represented By The Secretary Of Commerce Flame retarding cellulosic materials with sodium or potassium thiocyanate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302345A (en) 1980-09-12 1981-11-24 The United States Of America As Represented By The Secretary Of Commerce Flame retarding cellulosic materials with sodium or potassium thiocyanate

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