Siloxane-containing fire extinguishing foam

Abstract

The invention relates to fire extinguishing foams or concentrates thereof, these comprising a carbohydrate-containing siloxane surfactant.

Claims

1. A material capable of forming a fire extinguishing film forming solution when added with a component consisting of water, the material comprising a surface-active agent containing at least one substituted or unsubstituted carbohydrate or carbohydrate derivative and at least one oligosiloxane, wherein the surface-active agent comprises an unsymmetrical molecule of the form
A-B-C wherein A is a substituted or unsubstituted carbohydrate or carbohydrate derivative with one to four saccharide units, B is a linker substructure of at least one atom or chain, and C is an oligosiloxane selected from the group consisting of a methyl siloxane, an ethyl siloxane or a mixed methyl and ethyl siloxane.

2. The material of claim 1, further comprising a fire-extinguishing foam.

3. The material of claim 1, further comprising a fire-extinguishing foam concentrate.

4. The material of claim 1, further comprising an antifreeze component.

5. The material of claim 1, further comprising a preservative component.

6. The material of claim 1, further comprising an anticorrosive component.

7. The material of claim 1, further comprising a solutizer component.

8. The material of claim 1, further comprising a buffer component.

9. A method of manufacturing a material capable of forming a fire extinguishing film forming solution when added with a component consisting of water, the method comprising the steps of: adding to a fire-extinguishing foam or a fire-extinguishing foam concentrate a surface-active agent containing at least one substituted or unsubstituted carbohydrate or carbohydrate derivative and at least one oligosiloxane, wherein the surface-active agent comprises an unsymmetrical molecule of the form
A-B-C wherein A is a substituted or unsubstituted carbohydrate or carbohydrate derivative with one to four saccharide units, B is a linker substructure of at least one atom or chain, and C is an oligosiloxane.

10. A method of extinguishing or suppressing fires, the method comprising the steps of: mixing water with a material capable of forming a fire extinguishing film forming solution when added with a component consisting of water, the material comprising a surface-active agent containing at least one substituted or unsubstituted carbohydrate or carbohydrate derivative and at least one oligosiloxane, wherein the surface-active agent comprises an unsymmetrical molecule of the form
A-B-C wherein A is a substituted or unsubstituted carbohydrate or carbohydrate derivative with one to four saccharide units, B is a linker substructure of at least one atom or chain, and C is an oligosiloxane selected from the group consisting of a methyl siloxane, an ethyl siloxane or a mixed methyl and ethyl siloxane; applying the mixed water and material to a fire as a vapor barrier to prevent a flammable liquid from transitioning into the gaseous phase.

Description

EXAMPLE I

(1) Example I relates to a surface-active agent according to the present invention having the following structure:

(2) ##STR00003##

(3) The spreading behavior of a solution of 2 g/Lg/L in Example I was studied; it was found that this compound spreads.

(4) A solution of 2 g/L Example I and 0.5 g/L SDS behaved in the same manner.

EXAMPLE II

(5) Example II relates to a surface-active agent according to the present invention having the following structure:

(6) ##STR00004##

(7) The spreading behavior of a solution of 2 g/L Example II and 0.24 g/L SDS was studied it was found that this compound spreads very quickly. A similar behavior (although with slower spreading action) was established for a solution of 2 g/L Example II and 0.25 g/L Hansanol NS 242 conc. (sodium laureth sulfate 2EO).

(8) A solution of 500 mg/L Example II and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length) was studied as well; it was found that the substance spreads.

EXAMPLE III

(9) Example III relates to a surface-active agent according to the present invention having the following structure:

(10) ##STR00005##

(11) The spreading behavior of a solution of 2 g/L Example III and 0.5 g/L SDS was studied; it was found that this compound spreads very quickly.

EXAMPLE IV

(12) Example IV relates to a surface-active agent according to the present invention having the following structure:

(13) ##STR00006##

(14) The spreading behavior of a solution of 2 g/L Example IV was studied; it was found that this compound spreads very quickly.

(15) A solution of 2 g/L Example IV and 0.5 g/L SDS showed the same behavior.

EXAMPLE V

(16) Example V relates to a surface-active agent according to the present invention having the following structure:

(17) ##STR00007##

(18) The spreading behavior of a solution of 2 g/L Example V and 0.5 g/L SIDS was studied; it was found that this compound spreads very quickly.

EXAMPLE VI

(19) Example VI relates to a surface-active agent according to the present invention having the following structure:

(20) ##STR00008##

(21) The spreading behavior of a solution of 2 g/L Example VI and 0.5 g/L SDS, was studied; it was found that this compound spreads very quickly.

EXAMPLE VII

(22) Example VII relates to a surface-active agent according to the present invention having the following structure:

(23) ##STR00009##

(24) The spreading behavior of a solution of ca. 250 mg/L Example VII was studied; it was found that this compound spreads very quickly. It applies similarly for a solution of 500 mg/L Example VII and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length).

EXAMPLE VIII

(25) Example VIII relates to a surface-active agent according to the present invention having the following structure:

(26) ##STR00010##

(27) The spreading behavior of a solution of 2 g/L Example VIII and 0.5 g/L SDS was studied; it was found that this compound spreads.

(28) A solution of 2 g/L Example VIII and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length) showed the same behavior.

EXAMPLE IX

(29) Example IX relates to a surface-active agent according to the present invention having the following structure:

(30) ##STR00011##

(31) The spreading behavior of a solution of 2 g/L Example IX and 0.5 g/L SDS was studied; it was found that this compound spreads.

(32) A solution of 2 g/L Example IX and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length) showed the same behavior.

EXAMPLE X

(33) Example X relates to a surface-active agent according to the present invention having the following structure:

(34) ##STR00012##

(35) The spreading behavior of a solution of 2 g/L Example X was studied; it was found that this compound spreads. The same applies for a solution of 2 g/L Example X and 0.5 g/L SDS.

(36) A solution of 2 g/L Example X and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length) showed the same behavior.

EXAMPLE XI

(37) Example XI relates to a surface-active agent according to the present invention having the following structure:

(38) ##STR00013##

(39) The spreading behavior of a solution of 2 g/L Example XI and 0.5 g/L SDS was studied; it was found that this compound spreads.

(40) A solution of 2 g/L Example XI and 6 g/L Glucopon 215 CS UP (alkyl polyglycoside with C8-C10 alkyl chain length) showed the same behavior.

COMPARISON EXAMPLES

(41) Selected as comparison examples were surface-active agents containing polyethylene glycol units instead of carbohydrate moieties.

Comparison Example I

(42) A surface-active agent containing polyethylene glycol units was selected as a surface-active agent 1 for comparison. It has the following structure:

(43) ##STR00014##

(44) A solution of 2 g/L Comparison Example I and 0.5 g/L SDS was studied. The solution collected on the base of the bowl; no spreading was observed. A solution of comparison example I without SDS showed the same behavior.

Comparison Example II

(45) A compound with the following structure was selected for Comparison Example II:

(46) ##STR00015##

(47) A solution of 2 g/L Comparison Example II and 0.5 g/L SDS was studied. The solution collected on the base of the bowl; no spreading was observed. A solution of comparison example II without SDS showed the same behavior.

Comparison Example III

(48) A compound having the following structure was selected for comparison example III:

(49) ##STR00016##

(50) A solution of 2 g/L Comparison Example III and 0.5 g/L SDS was studied. The solution collected on the base of the bowl; no spreading was observed. A solution of comparison example III without SDS showed the same behavior.

Comparison Example IV

(51) A compound having the following structure was selected for comparison example IV:

(52) ##STR00017##

(53) A solution of 2 g/L Comparison Example IV and 0.5 g/L SDS was studied. The solution collected on the base of the bowl; no spreading was observed. A solution of comparison example IV without SDS showed the same behavior.

(54) Preparation of Glycoside Siloxane

(55) The siloxane glycoside surface-active agents as shown in the examples can be prepared from carbohydrates, inter alia, as follows:

(56) ##STR00018##

(57) TABLE-US-00001 German English Pyridin Pyridine Allylalkohol Ally alcohol Karstedt Kat. Toluol Karstedt-catalogue toluene

(58) Examination of the Spreading Behavior

(59) 5 ml cyclohexane was added to a petri dish of 9 cm diameter for the study of the spreading behavior. One drop, respectively, was then added to the un-foamed tenside solution; it was monitored to see if and how the surface-active agent solution spread out over the surface of the cyclohexane.

(60) Individual component combinations and set forth characteristics of previously mentioned embodiments are of an exemplary nature; replacing and substituting these teachings with other teachings as set forth in this specification and in the cited specifications is also expressly considered. The person skilled in the art will recognize that variations, modifications and other embodiments than those that have presently been described are likewise possible without deviating from the inventive idea and scope of protection. Correspondingly, the aforementioned description is of an exemplary nature and must not be understood as limiting to the scope of the invention. The term comprising, as used in the claims, does not exclude the use of other components or steps. The indefinite article a/an does not preclude a plural meaning. The mere fact that certain measurements are recited in mutually varying claims does not mean that a combination of these measures cannot be advantageously implemented. The scope of the present invention is defined in the following claims and any related equivalents thereto.