DISSOLVENT COMPOSITION, STABLE UNDER COLD CONDITIONS

Abstract

A composition comprising: at least 25% of a fatty acid methyl ester having from 6 to 14 carbon atoms, or a mixture of such methyl esters; at least 15% of dimethyl sulfoxide, or DMSO; and at least 5% of a glyceryl fatty acid monoester having from 6 to 14 carbon atoms or a mixture of such glyceryl monoesters; the percentages being percentages by weight relative to the total weight of the composition. This composition is stable at low temperature and may be used as a cleaning, dissolvent, dispersant and/or diluent composition, especially for active principles in the plant protections field.

Claims

1. A composition comprising: at least 25% of a methyl ester of a fatty acid having from 6 to 14 carbon atoms, or a mixture of such methyl esters; at least 15% of dimethyl sulfoxide, or DMSO; and at least 5% of a glyceryl monoester of a fatty acid having from 6 to 14 carbon atoms, or a mixture of such glyceryl monoesters; the percentages being by mass with respect to the total mass of the composition.

2. The composition according to claim 1, in which the fatty acid of said methyl ester has from 8 to 12 carbon atoms.

3. The composition according to claim 1, in which the fatty acid of said glyceryl monoester has from 8 to 12 carbon atoms.

4. The composition according to claim 1, said composition comprising from 15 to 65% of DMSO.

5. The composition according to claim 1, said composition comprising from 25 to 80% of methyl ester(s).

6. The composition according to claim 1, said composition comprising from 10 to 30% of glyceryl monoester(s).

7. The composition according to claim 1, said composition further comprising from 0.01 to 30% by mass of monopropylene glycol and/or from 0.01 to 40% by mass of succinate ester(s).

8. An active composition comprising the composition according to claim 1, said active composition further comprising in solution a herbicide, a fungicide and/or an insecticide.

9. A method for dissolving an active compound comprising mixing a composition according to claim 1 with an active compound.

10. A method for cleaning or removing polyurethane foam comprising applying a composition according to claim 1 to a polyurethane foam.

11. A method for producing a composition according to claim 1, said method comprising mixing DMSO with said one or more fatty acid methyl ester(s) and said one or more fatty acid glyceryl monoester(s).

12. The composition according to claim 1, in which the fatty acid of said methyl ester has from 8 to 10 carbon atoms.

13. A method for producing an active composition according to claim 8, said method comprising mixing DMSO with said one or more fatty acid methyl ester(s) and said one or more fatty acid glyceryl monoester(s), and with an herbicide, a fungicide and/or an insecticide.

Description

EXAMPLE 1: DISPERSANT COMPOSITIONS ACCORDING TO THE INVENTION AND COMPARISON WITH OTHER COMPOSITIONS

Materials and Methods:

[0041] The products used are: [0042] DMSO (technical gradeArkema) [0043] Mixture of 06-C10 fatty acid methyl esters (CAS No. 68937-83-7), marketed under the reference RADIA 7983 by OLEON. This mixture comprises from 98.5% to 100% of fatty acid methyl esters. It comprises from 48 to 70% of C8 fatty acid methyl esters (CAS No. 85566-26-3), from 30 to 50% of C10 fatty acid methyl esters (CE No: 287-636-4), at least 4.5% of C6 fatty acid methyl esters and 2% or less of C12 fatty acid methyl esters. [0044] Mixture of coconut oil methyl esters (CAS No. 67762-40-7), or methyl cocoate, marketed under the reference RADIA 7112 by OLEON and comprising the following proportions by mass of methyl esters, with respect to the total mass of the mixture: C12=74.6%, 014=24.4%, 016=0.7% and others=0.3%. [0045] Radia 7907 product of vegetable origin marketed by OLEON and comprising a minimum of 85% of glyceryl monoester and a minimum of 85% of glyceryl caprylate (CAS No. 26402-26-6). After analysis, the product used contains 85.9% by mass of glyceride monoesters, of which 98% is glyceryl caprylate. [0046] Palm kernel oil glyceryl monoesters, or PKOGM, (CAS No. 27215-38-4) having the following composition, by mass, Glycerol: 1%; C6 monoglycerides: 0.3%; C8 monoglycerides: 6.1%; C10 monoglycerides: 9.4%; C12 monoglycerides: 67.1%, C14 monoglycerides: 10.8%; C16 monoglycerides: 1.6%; C18 monoglycerides: 0.2%; C8-C8 diglyceride: 0.2%; C8-C10 diglyceride: 0.3%; C10-C10 diglyceride: 1.6%; C10-C12 diglyceride: 0.3%; C12-C12 diglyceride: 0.4%; C12-C14 diglyceride: 0.1%; other compounds 0.6%. BALANCE: Glycerol: 1%; monoglycerides: 95.5%; (C6-C14 monoglycerides: 93.7%) and diglycerides: 3%, [0047] Diisoamyl succinate (Cas No. 818-04-2) purity: 90% by mass (isoamylic alcohol forms part of the residual compoundsobtained from OLEON).

##STR00001## [0048] Monopropylene glycol (MPG) of plant origin (marketed under the reference RADIANOL 4713 by OLEON, purity 99.5% by mass).

[0049] Note: The percentages expressed are by mass with respect to the total mass of the composition.

TABLE-US-00001 TABLE I Proportions of the components of compositions 1 to 12 as a percentage by mass with respect to the total mass of the composition. Compositions 1 2 3 4 5 6 7 8 9 10 11 12 DMSO 50% 40%, 40% 40% 40% 40% 40% 40% 40% 40% 40% 40% Monopropylene glycol 20%, 10% 15% 5% 20% 10% 15% 5% Radia 7983 50% 40%, 40% 40% 40% 40% 40% 40% 40% 40% Radia 7907 (incl. 20% 10% 5% 15% 20% glyceryl caprylate) Radia 7112 40% 40% PKOGM 20% 10% 5% 15%

[0050] The equipment used is: [0051] 15 mL flasks [0052] A refrigerated cabinet at 0 C. (PanasonicMR-154-PE) [0053] 3 mL pipettes [0054] An analytical balance (OHAUS Adventurer Pro AV264C)

Procedure

[0055] A 15 mL flask is placed on the analytical balance. Each component is added in the proportions indicated in Table I.

[0056] For composition 1, 5 g of DMSO and 5 g of RADIA 7983 are added to the flask.

[0057] For composition 2, 4 g of DMSO, 2 g of RADIANOL 4713, 4 g of RADIA 7983 are added to the flask.

[0058] For composition 3, 4 g of DMSO, 4 g of RADIA 7983 and 2 g of RADIA 7907 are added to the flask.

[0059] For composition 4, 4 g of DMSO, 1 g of RADIANOL 4713, 3 g of RADIA 7983 and 1 g of RADIA 7907 are added to the flask.

[0060] For composition 5, 4 g of DMSO, 1.5 g of RADIANOL 4713, 4 g of RADIA 7983 and 0.5 g of RADIA 7907 are added to the flask.

[0061] For composition 6, 4 g of DMSO, 0.5 g of RADIANOL 4713, 4 g of RADIA 7983 and 1.5 g of RADIA 7907 are added to the flask.

[0062] For composition 7, 4 g of DMSO, 4 g of RADIA 7112 and 2 g of RADIA 7907 are added to the flask.

[0063] For composition 8, 4 g of DMSO, 2 g of RADIANOL 4713, 4 g of RADIA 7112 are added to the flask.

[0064] For composition 9, 4 g of DMSO, 4 g of RADIA 7983 and 2 g of PKOGM are added to the flask.

[0065] For composition 10, 4 g of DMSO, 1 g of RADIANOL 4713, 4 g of RADIA 7983 and 1 g of PKOGM are added to the flask.

[0066] For composition 11, 4 g of DMSO, 1.5 g of RADIANOL 4713, 4 g of RADIA 7983 and 0.5 g of PKOGM are added to the flask.

[0067] For composition 12, 4 g of DMSO, 0.5 g of RADIANOL 4713, 3 g of RADIA 7983 and 1.5 g of PKOGM are added to the flask.

[0068] Once these additions have been carried out, the flask is closed and agitated by hand for several seconds in order to obtain a homogenous mixture. According to the recommendations of standard CIPAC MT39 (2009) for assessing the stability of phytosanitary products at 0 C., a sample is then placed in the refrigerated cabinet at 0 C., and another is placed at ambient temperature. After 7 days' rest, the flasks are inspected.

TABLE-US-00002 TABLE II Results: Composition 1 2 3 4 5 6 7 8 Appearance at Clear 2 Clear Clear Clear Clear Clear 2 ambient T liquid phases liquid liquid liquid liquid liquid phases Appearance 2 / Clear Clear 2 Clear Clear / at 0 C. phases liquid liquid phases liquid liquid Composition 9 10 11 12 Appearance at Clear Clear Clear Clear ambient T liquid liquid liquid liquid Appearance Clear Clear Clear Clear at 0 C. liquid liquid liquid liquid

[0069] The fact of mixing DMSO with a methyl ester does not give a mixture that is stable at 0 C., even with the addition of a polyol such as monopropylene glycol. Conversely, the addition of a glyceryl monoester (compositions according to the invention 3, 4, 6, 7 and 9 to 12) makes it possible to stabilize a DMSO/methyl ester mixture at 0 C. and give a clear liquid with or without the presence of monopropylene glycol.

EXAMPLE 2: COMPARATIVE EXAMPLE: STUDY OF THE BEHAVIOUR OF BINARY COMPOSITIONS OF THE THREE COMPONENTS OF THE COMPOSITION ACCORDING TO THE INVENTION

Components:

[0070] The products used are: [0071] DMSO (technical gradeArkema) [0072] Radia 7907 comprising at least 85% by mass of glyceryl caprylate (CAS No. 26402-26-6). [0073] Mixture of C.sub.6-C.sub.10 methyl esters (CAS No. 68937-83-7), marketed under the reference RADIA 7983 by OLEON. [0074] Mixture of coconut oil methyl esters (CAS No. 61788-59-8), or methyl cocoate, marketed under the reference RADIA 7112 by OLEON. [0075] PKOGM

TABLE-US-00003 TABLE III Proportions of the components as a percentage by mass of the total weight of the composition Compositions 13 14 15 16 17 18 DMSO 50% 50.0% C.sub.6/C.sub.10 50% 50.0% Methyl esters Radia 7907 (incl. 50% 50% 50.0% Glyceryl caprylate) Methyl cocoate 50.0% 50.0% PKOGM 50.0% 50.0% 50.0%

[0076] The equipment used is: [0077] 15 mL flasks [0078] A refrigerated cabinet at 0 C. (PanasonicMR-154-PE) [0079] 3 mL pipettes [0080] An analytical balance (OHAUS Adventurer Pro AV264C)

Procedure

[0081] A 15 mL flask is placed on the analytical balance, each component is added in the proportions indicated. The synthesis is repeated in order to obtain a total of 3 samples of 10 g of compositions.

[0082] For composition 13, 5 g of DMSO and 5 g of RADIA 7907 are added to the flask.

[0083] For composition 14, 5 g of RADIA 7983 and 5 g of RADIA 7907 are added to the flask.

[0084] For composition 15, 5 g of RADIA 7112 and 5 g of RADIA 7907 are added to the flask.

[0085] For composition 16, 5 g of DMSO and 5 g of pa PKOGM added to the flask.

[0086] For composition 17, 5 g of RADIA 7983 and 5 g of PKOGM are added to the flask.

[0087] For composition 18, 5 g of RADIA 7112 and 5 g of PKOGM are added to the flask.

[0088] For each composition the flask is closed and agitated by hand for several seconds in order to obtain a homogenous mixture. According to the recommendations of standards CIPAC MT39 relating to the stability of phytosanitary products at 0 C., one of the flasks synthesized for each composition is then placed in the refrigerated cabinet at 0 C., and another is placed at ambient temperature. After 7 days' rest, the flasks are inspected and the results given in Table IV.

TABLE-US-00004 TABLE IV Compositions 13 14 15 16 17 18 Appearance at Clear Clear Clear Clear Clear Clear ambient T liquid liquid liquid liquid liquid liquid Appearance solid solid solid solid solid solid at 0 C.

Results

[0089] The binary compositions are liquid at ambient temperature but crystallize at 0 C. Unexpectedly, as seen above, the mixture of the three components makes it possible to obtain a composition that is liquid at 0 C.

EXAMPLE 3: COMPARATIVE STUDY OF THE COMPOSITIONS ACCORDING TO THE INVENTION AND OTHER DISPERSANT COMPOSITIONS, RHODIASOLV POLARCLEAN AND NMP

Materials and Methods:

Components:

[0090] The products used are: [0091] DMSO (technical gradeArkema) [0092] Monopropylene glycol (RADIANOL 4713OLEON) [0093] Composition comprising at least 85% by mass of glyceryl caprylate (Radia 7907OLEON) [0094] Mixture of C.sub.6/C.sub.10 methyl esters (RADIA 7983OLEON) [0095] Mixture of coconut oil methyl esters (RADIA 7112OLEON) [0096] Diisoamyl succinate (OLEON) [0097] Glyceryl caprylate/caprate (CAS No. 91052-46-9). This mixture is generally obtained by esterification of capric and caprylic acid with glycerol. The composition of this mixture is as follows:

Glyceryl Caprylate/Caprate Composition:

[0098]

TABLE-US-00005 % mass/total mass glycerol 2.3 C6 monoglycerides 0.1 C8 monoglycerides 69.8 C10 monoglycerides 22.9 C8-C8 diglyceride 3.2 C8-C10 diglyceride 1.3 C10-C10 diglyceride 0.1 Other compounds 0.3 BALANCE glycerol 2.3 monoglycerides 92.8 diglycerides 4.6 triglycerides 0.0 [0099] An ester amide, METHYL-5-(DIMETHYLAMINO)-2-METHYL-5-OXOPENTANOATE (CAS No. 1174627-68-9), marketed under the brand name Rhodiasolve Polarclean by RHODIA. There is between 70 and 90% of this compound.

TABLE-US-00006 TABLE V Proportions of the components as a mass percentage with respect to the total mass of the composition Composition 19 20 21 22 23 DMSO 30.0% 20.0% 30.0% 40.0% 40.0% Monopropylene glycol 10.0% 5.0% Radia 7983 15.0% 20.0% 30.0% 30.0% 30.0% RADIA 7907 20.0% 10% 20.0% 10.0% 85% Glyceryl caprylate Methyl cocoate 15.0% 20.0% 30.0% Diisoamyl succinate 20.0% 20.0% 15.0% Glyceryl 20.0% caprylate/caprate

[0100] The equipment used is: [0101] 15 mL flasks [0102] A refrigerated cabinet at 0 C. (PanasonicMR-154-PE) [0103] 3 mL pipettes [0104] An analytical balance (OHAUS Adventurer Pro AV264C) [0105] A watch glass [0106] A spatula [0107] A tensiometer, brand name K100, sold by KRSS GmbH, Borsteler Chaussee 85, 22453 Hamburg, Germany. [0108] A 70 mL crystallizing dish [0109] A platinum blade [0110] KRUSS laboratory software [0111] A viscometer/densimeter SVM 3000Anton Paar

Procedure

[0112] For each composition, the 15 mL flask is placed on the analytical balance. Each component is added in the proportions indicated, in order to have 10 g of composition in total.

[0113] For composition 19, 3 g of DMSO, 1.5 g of RADIA 7983, 1.5 g of RADIA 7112, 2 g of diisoamyl succinate and 2 g of glyceryl caprylate/caprate are added to the flask.

[0114] For composition 20, 2 g of DMSO, 2 g of RADIA 7983, 2 g of RADIA 7907, 2 g of RADIA 7112 and 2 g of diisoamyl succinate are added to the flask.

[0115] For composition 21, 3 g of DMSO, 3 g of RADIA 7983, 1 g of RADIA 7907 and 3 g of RADIA 7112 are added to the flask.

[0116] For composition 22, 4 g of DMSO, 1 g of RADIANOL 4713, 3 g of RADIA 7983 and 2 g of RADIA 7907 are added to the flask.

[0117] For composition 23, 4 g of DMSO, 0.5 g of RADIANOL 4713, 3 g of RADIA 7983, 1 g of RADIA 7907 and 1.5 g of diisoamyl succinate are added to the flask.

[0118] Once these additions have been carried out, each flask is closed and agitated by hand for several seconds in order to obtain a homogenous mixture. It is then placed in the refrigerated cabinet at 0 C. (CIPAC MT 39), a sample of 10 g of a product already on the market (Rhodiasolv Polarclean) is also placed in the refrigerated cabinet at 0 C. After 7 days' rest, the flasks are inspected. A sample is also kept at ambient temperature and inspected after 7 days.

[0119] The compositions of formulae 19 to 23 and the dispersants of the prior art are tested for surface tension in order to find the wettability thereof, by using a fine plate (called a Wilhelmy plate) connected to an analytical balance. The method of the Wilhelmy blade on the K100 is used. A 70 mL crystallizing dish filled with 30 mL of product to be tested is placed in the K100. The platinum blade is arranged over the product. The KRUSS Laboratory software determines the surface tension of the liquid, via the force felt by the blade in the liquid. The viscosity and the density are also measured. The results are compiled in Table VI.

TABLE-US-00007 TABLE VI Composition Rhodia solv POLAR 19 20 21 22 23 CLEAN NMP Appearance at Clear Clear Clear Clear Clear Clear Clear ambient T liquid liquid liquid liquid liquid liquid liquid Appearance Clear Clear Clear Clear Clear Clear Clear at 0 C. liquid liquid liquid liquid liquid liquid liquid Surface 29.3 22.9 29.3 29.1 28.8 37.3 40 tension at 20 C. (mN/m) Viscosity at 20 C. 5.025 3.863 5.738 5.684 3.859 8.659 1.7 (mm.sup.2/s) Density at 20 C. 1.000 0.990 0.978 0.957 0.944 1.043 1.03 (g/cm.sup.3)* Labelling* / / / / / H319 H315/ H319/ H335/ H360D *in accordance with Regulation (EC) No. 1272/2008 for chemical products

[0120] Compositions 19, 20, 21, 22 and 23 and the products of the prior art are all liquid at 0 C. These products are compatible with solubilization tests for active ingredients. In addition, the surface tensions measured are lower for the compositions according to the invention than for the competitor products, which promotes satisfactory dispersion of powders in these liquids. The physico-chemical properties of the compositions according to the invention are comparable to the products already used for the solubilization of phytosanitary active ingredients. The use of diisoamyl succinate makes it possible to reduce the viscosity and to promote the solubilization of the active ingredients.

EXAMPLE 4: SOLUBILIZING COMPOSITIONS OF TYPES 19 TO 21 COMPRISING AN ACTIVE INGREDIENT SOLUBILIZED ACCORDING TO THE INVENTION AND COMPARATIVE TESTS

[0121] The products used are: [0122] DMSO (technical gradeArkema) [0123] Monopropylene glycol (RADIANOL 4713OLEON) [0124] RADIA 7907OLEON; 85% by mass of glyceryl caprylate [0125] Mixture of C.sub.6/C.sub.10 methyl esters (RADIA 7983OLEON) [0126] Coconut oil methyl esters (RADIA 7112OLEON) [0127] Diisoamyl succinate (OLEON) [0128] Glyceryl caprylate/caprate (CAS No. 91052-46-9) [0129] Clodinafop-propargyl: solid herbicide, purity >98% [0130] Esteramide (Rhodiasolv PolarcleanRHODIA)

[0131] The equipment used is: [0132] 15 mL and 60 mL flasks [0133] A refrigerated cabinet at 0 C. (PanasonicMR-154-PE) [0134] 3 mL pipettes [0135] An analytical balance (OHAUS Adventurer Pro AV264C) [0136] A watch glass [0137] A spatula [0138] A tensiometer, brand name K100, sold by KRSS GmbH, Borsteler (see above) [0139] A 70 mL crystallizing dish [0140] A platinum blade [0141] KRUSS laboratory software [0142] A viscometer/densimeter (see above)

Method for Obtaining Composition 21

[0143] A composition 21 (see Example 3) according to the invention is prepared according to the following procedure: A 60 mL flask is placed on the analytical balance, each component is added in the proportions indicated in order to obtain 50 g of composition 21, i.e. 15 g of DMSO, 15 g of RADIA 7983, 15 g of RADIA 7112 and 5 g of RADIA 7907 are added to the flask. The latter is closed and agitated by hand for several seconds in order to obtain a homogenous mixture.

[0144] 2.4 g of clodinafop-propargyl is weighed in a watch glass. 4 g of composition according to the invention or of Rhodiasolv Polarclean is then weighed in a 15 mL flask, the 2.4 g of clodinafop-propargyl is added using a metal spatula, the mass is adjusted to 10 g by adding either composition 21 or Rhodiasolv Polarclean, as appropriate. Each flask is closed and agitated for several minutes in order to solubilize the active ingredient. The operation is repeated in order to prepare two flasks with the composition 21+the clodinafop-propargyl and two flasks with the Rhodiasolv Polarclean+the clodinafop-propargyl. One flask of each is then placed at ambient temperature and the other in the refrigerated cabinet at 0 C. for 7 days. The flasks were inspected after 7 days' rest. Any presence of crystals in solution is sought for.

Results:

[0145] The results are compiled in Table VII.

TABLE-US-00008 TABLE VII Composition No. Rhodiasolv 21 POLARCLEAN 24% of Clodinafop Propargyl Clear liquid Clear liquid 7 days at ambient T 24% of Clodinafop Propargyl Clear liquid Clear liquid 7 days at 0 C.

[0146] No clodinafop-propargyl crystal is observed after 7 days at ambient temperature or at 0 C.

Method for Compositions 19 and 20 (Cf. Example 3).

[0147] A 60 mL flask is placed on the analytical balance, each component is added in the proportions indicated, in order to have 50 g of compositions 19 and 20 in total. For composition 19, 15 g of DMSO, 7.5 g of RADIA 7983, 7.5 g of RADIA 7112, 10 g of glyceryl caprylate/caprate and 10 g of diisoamyl succinate are added to a flask. For composition 20, 10 g of DMSO, 10 g of RADIA 7983, 10 g of RADIA 7112, 10 g of RADIA 7907 and 10 g of diisoamyl succinate are added to a flask. The flasks are then closed and agitated by hand for several seconds in order to obtain a homogenous mixture.

[0148] 2.4 g of clodinafop-propargyl is weighed in a watch glass. 4 g of composition according to the invention 19 or 20 or of Rhodiasolv Polarclean is then weighed in a 15 mL flask, the 2.4 g of clodinafop-propargyl is added to the solvent using a metal spatula, the mass is adjusted to 10 g by adding composition 22, 23 or Rhodiasolv Polarclean according to the case. The flask is closed and agitated for several minutes in order to solubilize the active ingredient. The operation is repeated in order to prepare two flasks with each composition according to the invention+clodinafop-propargyl and two flasks with Rhodiasolv Polarclean+clodinafop-propargyl. One flask of each is then placed at ambient temperature and the other in the refrigerated cabinet at 0 C. for 7 days. The flasks were inspected after 7 days' rest. The presence of crystals in solution is sought for.

Results

[0149] The results are compiled in Table VIII

TABLE-US-00009 TABLE VIII Composition No. Rhodiasolv 19 20 POLARCLEAN 24% of Clodinafop Propargyl Clear Clear Clear liquid at 7 days at ambient T. liquid liquid 24% of Clodinafop Propargyl Clear Clear Clear liquid at 7 days at 0 C. liquid liquid

[0150] No clodinafop-propargyl crystal is observed after 7 days at ambient temperature or at 0 C.

EXAMPLE 5: USE OF A COMPOSITION ACCORDING TO THE INVENTION FOR SOLUBILIZING POLYURETHANE FOAM AND COMPARISON WITH THE USE OF NMP

[0151] The equipment used is: [0152] A 500 mL crystallizing dish [0153] A chronometer [0154] Pieces of polyurethane foam (2.52.50.12 cm) [0155] A Texture Analyzer 5 trade name TA1 from Lloyd Instruments

Method:

[0156] 4 pieces of polyurethane foam (PU) are immersed in a crystallizing dish containing 200 mL of composition 21 or NMP for 45 minutes. The pieces are then removed from the crystallizing dish and are placed on aluminium foil. The firmness of the pieces is then tested on the texture analyzer in compression mode.

[0157] By firmness is meant the force required for reaching a predefined deformation of the surface of the product tested. This force is expressed in Newtons (N). The firmness measurements were carried out by texture analysis. The test was carried out as follows for all the compositions and ingredients tested:

[0158] The texture analyzer was equipped with a cylindrical probe (diameter 12 mm, height 50 mm). A pre-stress of 0.2 N was applied at a velocity of 100 mm/s. The velocity of descent of the probe is 20 mm/sec and the penetration depth of the probe is 8 mm. This test is reproduced four times for each composition tested, each time with a different piece of foam. The average values of the maximum forces are then compared for each composition.

[0159] The firmness of the rigid polyurethane foam, tested under the same conditions as described above, is 43 N.

Results:

[0160] The results are presented in Table IX below:

TABLE-US-00010 TABLE IX Composition No. 21 NMP Maximum force (N) 0.22 +/ 0.06 0.20 +/ 0.06

[0161] The lower the force exerted by the probe, the less rigid the foam and the more the formulation will have degraded the foam. The composition 21 makes it possible to solubilize the PU foam as well as NMP. The composition 21 is a solvent that will behave in the same way as NMP in the field of cleaning polyurethane foams.

EXAMPLE 6

[0162] A composition 22 according to the invention was obtained using the procedure described above. The composition 22 comprises 66% of Radia 7121 (C12/C14 methyl cocoate), 17% of DMSO and 7% of PKOGM.

[0163] The mixture obtained is homogenous and remains stable after the tests described above have been carried out at 0 C.