AU602766B2 - Additive for water for fire fighting - Google Patents

Additive for water for fire fighting Download PDF

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Publication number
AU602766B2
AU602766B2 AU15333/88A AU1533388A AU602766B2 AU 602766 B2 AU602766 B2 AU 602766B2 AU 15333/88 A AU15333/88 A AU 15333/88A AU 1533388 A AU1533388 A AU 1533388A AU 602766 B2 AU602766 B2 AU 602766B2
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AU
Australia
Prior art keywords
water
additive
fire fighting
gelatinizing
agent
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.)
Ceased
Application number
AU15333/88A
Other versions
AU1533388A (en
Inventor
Ernest Dr. De Ruiter
Hasso Von Blucher
Hubert Von Blucher
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU1533388A publication Critical patent/AU1533388A/en
Application granted granted Critical
Publication of AU602766B2 publication Critical patent/AU602766B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
    • 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
    • A62D1/0064—Gels; Film-forming compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/12—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution
    • B01J13/125—Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Medicinal Preparation (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The additive contains a highly swelling, water-insoluble, highly polymeric substance as gel former which is coated with or dispersed in a water-soluble release agent which does not cause the gel-former particles to swell. The release agent is preferably a polyethylene glycol and is employed in an amount of from 10 to 100% by weight, based on the amount of gel former.

Description

A
.1 Form COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952-69 COMPLETE SPECIFICATION
(ORIGINAL)
Class Application Number: Lodged: Int. Class Complete Specification Lodged: Accepted: Published: Priority: -a 'a Relsted Art: 'Name of Applicant: Address of Applicant: Actual Inventor.
Address for Service HUBERT VON BLUCHER, HIASSO VON BLUCHER and DR. ERNEST DE RUITER Freytagstrasse 45, D4000 Dusseldorf, Columbusstrasse 58, D-4000 Dusseldorf 1, and Hohenstrasse 57a, D-5090 Leverkusen 3, respectively.
all of the Federal Republic of Germany.
HUBERT VON BLUCHER, HASSO VON BLUCHER and DR. ERNEST DE RUITER EDWD, WATERS SONS, 50 QUEEN STREET, MELBOURNE, AUSTRALIA, 3000.
Complete Specification for the invention entitled: "ADDITIVE FOR WATER FOR FIRE FIGHTINS" The following statement is a full description of this invention, including the best method of performing it known to zS 1, la ADDITIVE FOR WATER FOR FIRE FIGHTING The present invention relates to an additive for water for fire fighting containing a strongly swelling water-insoluble high molecular weight polymer as gelatinizing agent. High molecular weight polymer substances of the kind which are added to the water for fire fighting as swelling agents are moderately cross-linked water-insoluble acrylic or methacrylic acid copolymers.
These substances are highly absorptive and can absorb in a short time up to 500 fold of their weight of water without, however, being dissolved in water. These substances are c then present in the form of gel particles that are highly 0 swollen due to hydration and are dispersed in the water for 00 00 0 0 fire fighting. If one adds to the so-swollen gel particles "o0o 15 an excess of water, the latter will remain aj pure aqueous 0 C 0 phase. The viscosity of the water for fire fighting after o0o adding the gelatinizing agent is only minorily higher than CS- the viscosity of pure water. The sufficiently low viscosity is important in order that the water for fire fighting remains furtheron easy to handle, in particular fully pumpable. The advantages of the water for fire fighting to which an additive rf the kind is added are a reduction of the amount of water necessary for fire fighting, a reduction of the fire extinguishing time as well as the reduction of c 25 the water for fire fighting which runs off from the source of fire.
In spite of its excellent fire extinguishing 0 effect, this prior art additive for water for fire fighting j Cexhibits disadvantages which are a bar to its application on S; 30 a large scale. When the swelling high molecular weight polymeric gelatinizing substance is added to the water for fire fighting, lumps may be formed.
In the Mediterranean countries also seawater serves as water for fighting forest fires. The sodium chloride present therein leads, analogous to the hardness causing salts, to a disturbance of the swelling procedure. Swelling times of from one to several minutes are necessary to swell -I 2 the gelatinizing substance. It is true that when water for fire fighting from a triple combination pumper is used, in which the substances have enough time to swell, the swelling time play only a subordinate role, however, it is extremely difficult to disperse lumps once they are formed.
Therefore, the object of the present invention is to improve an additive for water for fire fighting of the above-mentioned kind to the effect that the disadvantages described above do no longer occur.
The solution of this problem is provided by the additive for water for fire fighting according to the 0o 0o invention wherein the particles of the gelatinizing agent 0 0 o 0 0 are encased by, or dispersed in, a water-soluble release Sooo agent of the kind that does not cause the particles of the S 0"o" 15 gelatinizing agent to swell. The release agent protects the oe gelatinizing agent from becoming sticky upon the penetration oe of water and thus from agglutinating. When using the ao0ooo release agent according to the invention, the dispersing of the gelatinizing substance takes place without any problem.
It is important that the release agent has a good water solubility and does not itself cause the particles of 0000 oo00 0 the gelatinizing agent to swell. Preferred release agents o o include polyethylene glycol, diammonium phosphate, a sugar or a sugar derivative.
25 According to the invention, the release agent functions so to speak as a barrier between the particles of the gelatinizing agent and, therefore, prevents 0 agglutination.
S y ,*1
A
it a c; 000 0 o000 00 0 0 0 0 0 I 3 Since the prior art gelatinizing substances require a swelling time of from one to several minutes, the use of water for fire fighting con-L~ining addJitives of the kind would necessitate in the case of large-scale fires the storage of the water for fire fighting in intermediate containers in order to achieve the necessary swelling time.
The use of intermediate containers of the kind would become superfluous if it were possible. to reduce the swelling time to a few seconds. Such a reduction of the swelling time can be basically achieved by reducing the particle size of the particles of the gelatinizing agent. On the one hand, one increases thereby the working surface of the water during the swelling procedure and, on the other hand, reduces t he diffusion path. However, using very fine particles of the gelatinizing agent increases the risk of agglutination, I~t was, therefore, not possible to date to disperse very finely ground gelatinizing substances in water without the help of particular adjuvants. If, however, one encases atccording to the invention the particles of the gelatinizing agen~t by a water-soluble release agent, ,also very finaly gjround gelatinizing substances miay be used without any agglutination of the particles, Hence, it is possible by virtue thereof to directly spray the gelatinizing substance into the hose pipe through a nozzle, preferred release agent according to the invention is 'polyethylene glycol. In contrast to ethylene glycol and diethylente glycol, polyethylene glycol is not absorbed by the gelatinizing substance, Therefore, a polyethylene glycol layer protects the particles of the gelatinizing agent from sticking to each other too quickly upon the penetration of water and from agglutination, Moreover, polyethylene glycol is absolutely non-toxio and is very quickly decomposed and, therefore, can be considered an ecologically nonpol.luting substance.
C 4 Xt has proved to be advantageous to wet the particles of the gelatinizing agent with an amount of from 1o to loo% by weight polyethylene glycol 3oo or 4oo, based on the amount of gelatinizing substance.
Besides, diammonium biphosphate has proved to be a particularly suitable release agent. In fire fighting in the mediterrenean area, where the most disastrous forest fires occur, the tanks are often filled with seawater. The sodium chloride present in high concentration therein as well as the hardness causing salts that are likewise contained therein entail in a disadvantageous manner a strong reduction of the swelling capacity of the gelatinizing substance.
This disadvantageous effect is considerably reduced when dianmmonium biphosphate is used as release agent. The phosphate ion blocks the hardness causing substances and the ammonium ion comuitpensates the negative effect of the sodium ion on the swelling capacity. It is particularly advantageous to use the diammonium biphosphate in amounts of from 2o to loo% by weight, based on the gelatinizing substance.
A particularly preferred method of preparing the additive for water for fire fighting is to dry mix the gelatinizing substance with, for example, 5o% by weight of diammonium biphosphate in a high speed mixer. The diammonium biphosphate crystals are crushed thereby. At the sa.me time, from lo to 3o% by weight of water, based on the gelatinizing substance, are sprayed. The particles of the gelatinizing substance become sticky for a short time and the diammonium biphosphate is permenantly fixed on the surface of the particles of the gelatinizing agent.
Also sugars are suitable for use as release agent according to the invention, In particular mono- and disaccharides.
Good results were obtained, for example, with mannitol.
4 0 0 C. C (C C CC

Claims (7)

1. An additive for water for fire fighting containing a strongly swelling water-insoluble high molecular weight I S i. S L c X T polymer as gelatinizing agent/, characterized in that the particles of the gelatinizing agent are encased or dispersed in a water-soluble release agent which does not cause the particles of said gelatinizing agent to swell.
2. An additive ror water for fire fighting according to claim 1, characterized in that the release agent is a polyethylene glycol.
An additive for water for fire fighting according to claim 2, characterized in that the polyethylene glycol is present in an amount of from 1o to loo% by weight, based on the amount of the gelatinizing agent.
4. An additive for water for fire fighting according to claim 1, o characterized in that the release agent is diammonium biphosphate.
An additive for water for fire fighting according to claim 4, characterized in that the diammonium biphosphate is present in an amount of from 2o to loo% by weight, based on tne amount of the gelatinizing agent.
6. An additive for water for fire Jighting according to claim 1, characterized in that the release agent is a sugar.
7. An additive for water for fire fighting according to claim 6, characterized in that the sugar is a mono- or disaccharide. V YjI M -6- additiv for ,,7ater for fire figh-iting according to claim haractcrized in that the sugar is mannitol. fE claims 1 tto 8, character 7ed i that the gelatinizing cnt is aoderat N-Cr-In -ig -6 oss-link~XC d wator-insoluble acrylic me nithnor- cq epcid vfre--- I 1 IDATE) Lhis 28tLh day of April, 1988 HUBERT VON ILUCIIER, IASSO VON BLUCHER V DR. ERNEST DE RUITER MEIWD. WATERS SONS, PATENT ATTORNEYS i 50 QUEEN STREET, MELBOURNE, VIC. 3000
AU15333/88A 1987-05-15 1988-04-29 Additive for water for fire fighting Ceased AU602766B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3716304 1987-05-15
DE19873716304 DE3716304A1 (en) 1987-05-15 1987-05-15 EXTINGUISHING WATER ADDITION

Publications (2)

Publication Number Publication Date
AU1533388A AU1533388A (en) 1988-11-17
AU602766B2 true AU602766B2 (en) 1990-10-25

Family

ID=6327637

Family Applications (1)

Application Number Title Priority Date Filing Date
AU15333/88A Ceased AU602766B2 (en) 1987-05-15 1988-04-29 Additive for water for fire fighting

Country Status (15)

Country Link
EP (1) EP0295412B1 (en)
JP (1) JP2756563B2 (en)
KR (1) KR960008612B1 (en)
CN (1) CN1015511B (en)
AT (1) ATE79044T1 (en)
AU (1) AU602766B2 (en)
CA (1) CA1307393C (en)
DE (2) DE3716304A1 (en)
DK (1) DK167175B1 (en)
ES (1) ES2034007T3 (en)
FI (1) FI882239A (en)
GR (1) GR3005617T3 (en)
NO (1) NO175520C (en)
PT (1) PT87404B (en)
SG (1) SG42593G (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496475A (en) * 1992-10-30 1996-03-05 Ciba-Geigy Corporation Low viscosity polar-solvent fire-fighting foam compositions
DE4336319A1 (en) * 1993-10-25 1995-04-27 Oeko Tec Umweltschutzsyst Gmbh Extinguishing media and process for its manufacture
GR1002790B (en) * 1996-07-22 1997-10-17 Methods and products for extinguishing fires.
NL1007738C2 (en) * 1997-12-08 1999-06-09 Univ Delft Tech Gel-forming fire-extinguishing system
US6322726B1 (en) 1998-02-27 2001-11-27 Astaris, Llc Fire retardant concentrates and methods for preparation thereof and use
DE10041395A1 (en) 2000-08-23 2002-03-07 Stockhausen Chem Fab Gmbh Polymer dispersions for fire prevention and fire fighting with improved environmental compatibility
DE10041394A1 (en) * 2000-08-23 2002-03-07 Stockhausen Chem Fab Gmbh Use of water-in-water polymer dispersions for fire prevention and fighting
US6846437B2 (en) 2000-11-28 2005-01-25 Astaris, Llc Ammonium polyphosphate solutions containing multi-functional phosphonate corrosion inhibitors
ES2286148T3 (en) 2000-11-28 2007-12-01 Icl Performance Products Lp COMPOSTIONS IGNIFUGAS ESPESADAS WITH BIOPOLIMERO.
ES2415835T3 (en) 2000-11-28 2013-07-29 Icl Performance Products Lp Fire retardant compositions with a reduced ability to corrode aluminum
US6802994B1 (en) 2000-11-28 2004-10-12 Astaris Llc Fire retardant compositions containing ammonium polyphosphate and iron additives for corrosion inhibition
CN104010700B (en) * 2012-01-09 2016-11-09 S.P.C.M.公司 The method stoped and/or prevent peat fire spread
CN107050699A (en) * 2016-12-30 2017-08-18 李小波 A kind of application of alkali swollen thickener and its application apparatus
CN107596612A (en) * 2017-09-19 2018-01-19 安徽吉安消防科技有限公司 A kind of solid type extinguishing medium and its preparation, application method
CN111514507B (en) * 2020-04-10 2024-06-07 杨根喜 Preparation method of forest fire extinguishing composition

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684707A (en) * 1970-05-19 1972-08-15 William L Livingston Slurry for ablative water systems comprising a cross-linked polymer gelling agent and a time delay carrier
US4610311A (en) * 1983-02-15 1986-09-09 Sanitek Products, Inc. Method for reducing the aerial drift of aqueous preparations
EP0199897A1 (en) * 1985-05-03 1986-11-05 Hubert von Blücher Use of an aqueous system containing swollen macromolecules as fire-extinguishing water

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US3229769A (en) * 1963-01-28 1966-01-18 Dow Chemical Co Method for controlling the spread of fire
US3407138A (en) * 1964-09-02 1968-10-22 Dow Chemical Co Method and composition for extinguishing and preventing fires in flammable liquids
US3345289A (en) * 1965-11-01 1967-10-03 Gen Aniline & Film Corp Fire retardant composition of diammonium phosphate containing methylvinyl ether-maleic anhydride copolymer as thickener
US3666707A (en) * 1970-02-20 1972-05-30 Factory Mutual Res Corp Slurry additive for ablative water fire extinguishing systems
JPS56125066A (en) * 1980-03-05 1981-10-01 Otsuka Kagaku Yakuhin Aqueous solution-like fire-extinguishing substance
JPS58200758A (en) * 1982-05-18 1983-11-22 昭和電工株式会社 Fire fighting method
JPS6244271A (en) * 1985-08-22 1987-02-26 森田ポンプ株式会社 Raw solution of fire extinguishing agent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684707A (en) * 1970-05-19 1972-08-15 William L Livingston Slurry for ablative water systems comprising a cross-linked polymer gelling agent and a time delay carrier
US4610311A (en) * 1983-02-15 1986-09-09 Sanitek Products, Inc. Method for reducing the aerial drift of aqueous preparations
EP0199897A1 (en) * 1985-05-03 1986-11-05 Hubert von Blücher Use of an aqueous system containing swollen macromolecules as fire-extinguishing water

Also Published As

Publication number Publication date
CN1015511B (en) 1992-02-19
DE3716304A1 (en) 1988-11-24
SG42593G (en) 1993-07-09
DE3873430D1 (en) 1992-09-10
KR880013589A (en) 1988-12-21
NO881917L (en) 1988-11-16
AU1533388A (en) 1988-11-17
GR3005617T3 (en) 1993-06-07
ATE79044T1 (en) 1992-08-15
FI882239A0 (en) 1988-05-13
JPS63309279A (en) 1988-12-16
CA1307393C (en) 1992-09-15
NO175520B (en) 1994-07-18
NO175520C (en) 1994-10-26
NO881917D0 (en) 1988-05-02
PT87404B (en) 1992-08-31
JP2756563B2 (en) 1998-05-25
DK266188A (en) 1988-11-16
EP0295412A3 (en) 1989-05-10
EP0295412A2 (en) 1988-12-21
PT87404A (en) 1989-05-31
EP0295412B1 (en) 1992-08-05
DK266188D0 (en) 1988-05-13
ES2034007T3 (en) 1993-04-01
CN88102935A (en) 1988-12-14
KR960008612B1 (en) 1996-06-28
FI882239A (en) 1988-11-16
DK167175B1 (en) 1993-09-13

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MK14 Patent ceased section 143(a) (annual fees not paid) or expired