GB679585A - Process for the manufacture of foam fire extinguishing liquid - Google Patents

Process for the manufacture of foam fire extinguishing liquid

Info

Publication number
GB679585A
GB679585A GB12359/50A GB1235950A GB679585A GB 679585 A GB679585 A GB 679585A GB 12359/50 A GB12359/50 A GB 12359/50A GB 1235950 A GB1235950 A GB 1235950A GB 679585 A GB679585 A GB 679585A
Authority
GB
United Kingdom
Prior art keywords
substances
glutinous
waste
hydrolysis
added
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
GB12359/50A
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.)
Forsvarets Forskningsinstitutt
Original Assignee
Forsvarets Forskningsinstitutt
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 Forsvarets Forskningsinstitutt filed Critical Forsvarets Forskningsinstitutt
Publication of GB679585A publication Critical patent/GB679585A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0071—Foams
    • A62D1/0078—Foams containing proteins or protein derivatives

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Edible Seaweed (AREA)

Abstract

In the preparation of alkaline hydrolysates of fish waste the glutinous substances are separated from the rest of the base material and subjected to a milder or briefer hydrolysis than the other protein substances, both the glutinous and other protein substances being hydrolysed to give maximum foaming properties, and the two hydrolysed substances are mixed together. The glutinous substances may be separated by boiling the starting material in water or dilute acid, preferably acetic acid, solution and filtering from other protein substances. The two constituents may be hydrolysed separately or the glutinous substances may be added to the alkaline hydrolysis of the other protein substances after hydrolysis has started and so that on neutralization after combined hydrolysis maximum foaming properties are obtained. Other materials, e.g. hair waste from tanneries and waste blood, may be added to the fish waste at a predetermined stage in the process so that products with maximum foaming properties are obtained. The addition of from 5 to 50 per cent of hair waste is mentioned. The products are foam fire extinguishing liquids. In an example glutinous substances are removed from fish waste by treatment with aqueous acetic acid and during the hydrolysis of the residue with caustic soda waste hair and the glutinous solution are added the final hydrolysate being neutralized with hydrochloric acid and aluminium sulphate added thereto.ALSO:In the preparation of alkaline hydrolysates of fish waste the glutinous substances are separated from the rest of the base material and subjected to a milder or briefer hydrolysis than the other protein substances, both the glutinous and other protein substances being hydrolysed to give maximum foaming properties, and the two hydrolysates are mixed together. The glutinous substances may be separated by boiling the starting material in water or dilute acid, preferably acetic acid, solution and filtering from other protein substances. The two constituents may be hydrolysed separately or the glutinous substances may be added to the alkaline hydrolysis of the other protein substances after hydrolysis has started and so that on neutralization after combined hydrolysis maximum foaming properties are obtained. Other materials, e.g. hair waste from tanneries and waste blood, may be added at a predetermined stage in the process so that products with maximum foaming properties are obtained. The addition of from 5 to 50 per cent of hair waste is mentioned. The products are foam fire extinguishing liquids. In an example, fish waste is boiled with aqueous acetic acid to remove glutinous substances and during the hydrolysis of the residue with caustic soda, waste hair and the glutinous solution are added, the final hydrolysate being neutralized with hydrochloric acid and aluminium sulphate and a preservative added.
GB12359/50A 1949-06-01 1950-05-17 Process for the manufacture of foam fire extinguishing liquid Expired GB679585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO679585X 1949-06-01

Publications (1)

Publication Number Publication Date
GB679585A true GB679585A (en) 1952-09-17

Family

ID=19906619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12359/50A Expired GB679585A (en) 1949-06-01 1950-05-17 Process for the manufacture of foam fire extinguishing liquid

Country Status (1)

Country Link
GB (1) GB679585A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2549386C1 (en) * 2013-10-10 2015-04-27 Хасан Амаевич Тайсумов Heat-resistant acetone fire-fighting foam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2549386C1 (en) * 2013-10-10 2015-04-27 Хасан Амаевич Тайсумов Heat-resistant acetone fire-fighting foam

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