FR3065733A1 - USE OF A RICINOLEIC ACID SALT AS A PAINT ADDITIVE FOR THE DESTRUCTION OF BAD SMELLS, A PAINT COMPOSITION CONTAINING THE SAME, AND A METHOD OF DESTRUCTION OF BAD ODORS IN AIR - Google Patents

Abstract

The present invention relates to the use of a zinc salt of ricinoleic acid as an additive in a paint to eliminate odors in the air, particularly in the air inside a room, a home or a building at least one wall or wall portion of said room, dwelling or building or at least one support in said room, said dwelling or building being painted with said paint. The invention also relates to a paint composition for eliminating unpleasant odors in the air of a room, a dwelling or a building comprising, as an anti-odors additive, a zinc salt of the acid ricinoleic and a method of removing bad odors in the air of a room, a dwelling or a building with the aid of said paint composition.

Description

065 733

53732 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders)

©) National registration number

COURBEVOIE © Int Cl ⁸ : C 09 D 5/00 (2017.01), C 09 D 7/00, C 08 K5 / 098, A 61 L 9/014, B 01 D 53/34

A1 PATENT APPLICATION

©) Date of filing: 28.04.17. © Applicant (s): OMNIUM NATIONAL INDUSTRIEL (30) Priority: PAINTINGS Société anonyme - FR. @ Inventor (s): VERLHAC PATRICK and HOAREAU PASCAL. (43) Date of public availability of the request: 02.11.18 Bulletin 18/44. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): OMNIUM NATIONAL INDUSTRIEL DES related: PAINTINGS Limited company. ©) Extension request (s): © Agent (s): CABINET CHAILLOT.

FR 3 065 733 - A1 (34) USE OF A RICINOLEIC ACID SALT AS AN ADDITIVE TO A PAINT FOR THE DESTRUCTION OF POOR ODORS, PAINT COMPOSITION CONTAINING THE SAME, AND METHOD FOR DESTRUCTION OF POOR ODORS IN THE AIR.

The present invention relates to the use of a zinc salt of ricinoleic acid as an additive in a paint to eliminate unpleasant odors prevailing in the air, in particular in the interior air of a room, a house or a building at least one wall or part of a wall of said room, said house or said building or at least one support being in said room, said house or said building being painted using said paint .

The invention also relates to a paint composition for eliminating bad odors prevailing in the air of a room, a house or a building comprising, as anti-bad odor additive, a zinc salt of the acid. ricinoleic as well as a process for eliminating unpleasant odors prevailing in the air of a room, a house or a building using said paint composition.

USE OF A RICINOLEIC ACID SALT AS AN ADDITIVE TO A PAINT FOR THE DESTRUCTION OF POOR ODORS, PAINT COMPOSITION CONTAINING THE SAME, AND METHOD FOR DESTRUCTION OF POOR ODORS

The present invention relates to:

- the use of a salt of ricinoleic acid as an additive to a paint for the destruction or elimination of bad odors prevailing in the air, in particular in the air inside a room, a house or of a building;

- a paint composition containing the salt of ricinoleic acid as an additive;

- a process for destroying or eliminating unpleasant odors prevailing in the air, in particular in the air inside a room, a house or a building.

These bad smells are in particular the smells of tobacco, the body odors and perspiration, the odors of humidity and molds (musty smell), the cooking odors, in particular the cooking odors of certain plants, and of graill, smells of tobacco, odors of garbage cans, odors of wet animals, etc.

The present invention finds its application in decorative paints, such as interior paints (including varnishes), paints for walls, ceilings, floors and woodwork, as well as in industrial paints which can be applied to various substrates such as phonic panels or insulating panels.

Indoor air is a major public health issue. It is often polluted by disturbing odors such as those mentioned above. These odors are gases mainly containing oxygenated, hydrogenated and carbonaceous molecules. They are perceived by our sense of smell because they escape into the air and come to stimulate the olfactory receptors.

Substances with similar odors have molecules of similar shapes. The shape of a molecule determines the nature of its odor. However, small structural changes can lead to completely different olfactory perceptions. Conversely, very different structures can present similar odors. Most odorous substances are organic compounds.

Mention may be made, as odor molecules, of volatile organic compounds such as: dimethyl sulfide, acetic acid, 3-methylbutanal, propanoic acid, furfural, glycol ethers and 2-ethyl- 5-methyl-pyridine.

Most solutions to reduce or eliminate these odors are harmful. There are candles, essential oils, perfume burners, aerosols or even deodorants which act by masking bad smells without destroying them. Most of these products even contain formaldehydes and should only be used in well-ventilated areas, not in the presence of children under the age of 3, or in pregnant or lactating women.

There is therefore a need to propose a solution to destroy these bad odors which resolves all or part of these drawbacks.

To this end, the present invention relates to the use of a zinc salt of ricinoleic acid as an additive in a paint to eliminate bad odors in a room, a house or a building, at least one interior wall or part of inner wall of said room, said dwelling or of said building or at least one support being in said room, said dwelling or said building being painted using said paint.

The zinc salt of ricinoleic acid according to the invention therefore carries at least one fixing function of the odor-emitting molecules present in the air which it is thought to fix these odor molecules covalently in the form of complex.

In a particular embodiment, the zinc salt of ricinoleic acid is used in an amount of 0.5 to 5 parts by weight, in particular from 3 to 5 parts by weight, per 100 parts by weight of the paint composition .

The present invention also relates to a paint composition for eliminating bad odors prevailing in a room, a house or a building, characterized in that it comprises, as anti-bad odor additive, a zinc salt of ricinoleic acid .

Painting is an element particularly present in the habitat, which allows to have painting surfaces and therefore large active surfaces while being non-invasive.

In a particular embodiment of the paint composition, the zinc salt of ricinoleic acid is used in an amount of 0.5 to 5 parts by weight, in particular from 3 to 5 parts by weight, per 100 parts by weight of the paint composition.

In another particular embodiment, the paint composition may include, in water:

- At least one binder, chosen in particular from a polymer in acrylic emulsion and a styrene / acrylic copolymer, in a proportion in particular from 10 to 50 parts by weight;

- At least one pigment / filler, chosen in particular from titanium dioxide, talc, calcium carbonate and their mixtures, in particular at a rate of 25 to 70 parts by weight;

- At least one diluent, which is in particular propylene glycol, in particular at a rate of 0.90 to 1.30 parts by weight;

- At least one biocide, chosen in particular from chloromethyl-methylisothiazolone, benzisothiazolone and their mixtures, in particular at a rate of 0.20 to 0.30 parts by weight;

- at least one rheology modifier, in particular at a rate of 2.80 to 3.20 parts by weight;

- At least one dispersant, in particular at a rate of 0.40 to 1.20 parts by weight;

- At least one anti-foam additive, in particular at a rate of 0.15 to 0.50 parts by weight;

- At least one coalescing agent, in particular at a rate of 0.90 to 1.30 parts by weight; and

- At least one thickener, in particular at a rate of 0.20 to 0.40 parts by weight;

the parts by weight being indicated per 100 parts by weight of the composition.

This paint composition has the advantage of permanently and irreversibly fixing the odor molecules.

Preferably, the paint composition formulated according to the invention has at least one of the following technical characteristics:

- in the case of a matt paint:

- density: 1.63 g / 1

- viscosity HERE: 3.0-3.5 poises

- MS3 viscosity: 40-45

- pH: 8 - 9

- gloss: <2% at 85 ° C

- dry mass extract: 62 - 66%

- dry volume extract: 40 - 44%; and

- in the case of a satin paint:

- density: 1.63 g / 1

- viscosity HERE: 3.0-3.5 poises

- MS3 viscosity: 45-50

- pH: 8 - 9

- gloss: <15% at 60 ° C

- dry mass extract: 50 - 54%

- dry volume extract: 35 -39%.

Preferably, the paint according to the invention has, after one hour, a reduction of at least 15%, in particular at least 60%.

The paint according to the invention preferably has almost zero desorption, less than 1% at 24 h. This is particularly advantageous since the paint by means of its odor-preventing additive according to the invention covalently fixes the odor molecules. This fixation is permanent, there is no subsequent rejection of odor molecules, in particular because this additive is stable.

Advantageously, the paint according to the invention has a lifespan of at least 3 years. Lifetime means that the paint is not saturated with odor molecules and can still play a capturing role.

The present invention further relates to a method of eliminating or destroying bad odors prevailing in the air of a room, a house or a building, characterized in that at least one wall is painted interior or interior wall portion of said room, said dwelling or said building or at least one support being in said room, said dwelling or said building using the composition as defined above.

The fixing function reacts with the odor molecules present in the air and fixes them covalently.

The present invention has the advantage of being able to be used simply by any person wishing to eliminate unpleasant odors from his environment. Indeed, the paint has classic characteristics of paintings, in particular decorative paints. It can be a matte, velvety or satin paint and is available in all the usual colors of the color charts.

According to the invention, the paint has the power to eliminate bad odors as soon as it is applied, more precisely as soon as the paint is dry, at least one hour after application.

Painting requires a single coat of paint to eliminate bad odors. However, it is possible to apply several coats, in particular for questions of support coverage, without effect on the sanitizing power of the paint.

The paint can be packaged in plastic or metal packaging.

present

In these examples

The following examples illustrate the invention without however limiting its scope, examples, the suppliers are indicated for information only and are in no way limiting.

Example 1 (comparat i f)

A matt paint having the following formulation was prepared by mixing the ingredients in the usual manner for the paints:

Ingredient

Parts by weight • Sodium benzoate (anti-rust additive),

marketed by the society "Quaron" ..... • Propylene glycol (diluent), marketed by the society

0.20 "Quaron" ..............................

• Biocide marketed under the brand name "ROCIMA ™ 633" by the company "The Dow Chemical Company" ..................

1.20

0.25 • Polymer in acrylic emulsion (binder) sold under the brand name “UCAR ™

Latex DL 420 G "by the company" The

Dow Chemical Company ”.................. 13.00 • Rheology modifier marketed under the brand“ ACRYSOL RM 5000 ”by the company“ The Dow Chemical Company ”. 3.33 • Dispersant sold under the name "Disperser W73" by the company "Novcoat" ..................... 1.10 • Antifoam additive sold under the mark "BYK 1615" by the company "BYK" ................................. 0.20 • Dioxide RDIS titanium sold by the company "Huntsman" ................. 18.50 • Precipitated calcium carbonate sold under the brand name "SOCAL®

P2 "by the company" Imérys ".......... 5.00 • Talc sold under the brand" STEAMAT® "by the company" Imérys ".. 5.00 • Calcium carbonate sold under the brand "MIKHART® SPL" by the company "La Provençale" ............... 7.00 • Calcium carbonate marketed under the brand "MIKHART® 10" by the company "La Provençale" ....................... 8.00 • Calcium carbonate marketed under the brand name "MIKHART® 5" by the company "La Provençale" .... ................... 8.00 • Calcium carbonate marketed under the brand name "OMYA® BL" by the company "La Provençale" ........ ............... 5.00 • Coalescing agent marketed under the name "Optifilm Enhancer

300 "by the company" IMCD "........... 1.00 • Polyurethane thickener sold under the brand" COAPUR ™ XS 71 "by the company" Omya "......... ............... 0.37 • Water .............................. ....... 17.85

Example 2 (of the invention)

A paint was prepared having the formulation of Example 1 to which were added 3 parts by weight of the zinc salt of ricinoleic acid sold by the company Evonik under the name "TEGO SORB B80".

Example 3: Evaluation of the reduction of the odor molecules by the paint of Example 2

A) Evaluation of the reduction of odor molecules by dynamic dilution olfactometry test

Experimental protocol

A paint was applied (either from Example 1 or from Example 2) with a roller on aluminum plates previously degreased in two layers, respecting a drying time of 6 hours between the layers and a minimum of 12 hours between the second layer and the start of the test.

The coated plates were then placed in a 1.2 m ³ test enclosure vertically along the walls.

ίο μΐ of the odorous mixture as described in Table 2 below were placed in a crystallizer and placed in the test chamber.

The enclosure was placed in static mode and at room temperature.

One and three hours after the introduction of the mixture, the samples necessary to assess the concentration of the odor were taken.

Between each test, the enclosure was placed under a flow of clean air.

The determination of the odor concentration of the samples is here determined objectively and precisely according to the European standard EN 13725 (results obtained under ISO 17025 accreditation). This standard describes a dynamic olfactometry method at the threshold of perception by a calibrated panel. We worked with a jury of 4 people previously calibrated for their sensitivity to a reference substance: nbutanol. For each sample, three rounds were carried out. This method converts the dilution factor to the perception threshold in terms of odor concentration (result expressed in uoE / m ³ , European odor unit). The analyzes were carried out with 12 ITE (Individual Threshold EStimates) (3 rounds x 4 panelists) after retrospective sorting.

Results

The results on the paints are expressed in terms of European odor concentration (Cod) in Table 1 below:

Table 1

Examples Time after introduction some mixture (h) Cod (uoE / m ³ ) u ^(a) (uoE / m ³ ) CV ^(b) (%) % abatement Example comparison 1 1 hr 7100 2800 - - Example comparison 1 3 hrs 5390 2130 23 - Example of Invention 1 1 hr 2800 1110 8 61 Example of Invention 1 3 hrs 2380 940 17 56

(a) The uncertainty of measurement indicated (expanded uncertainty) is obtained by multiplying the standard uncertainty composed by a widening factor k = 2. The measured value (y) and its uncertainty (U) define the range (y ± U) in which the value of the measured quantity lies with a probability of about 95%.

(b) CV: coefficient of variation based on the repeatability of the jury in intra-test. It is specific to the odor tested. This value may be completed as additional information, but does not constitute a requirement of the standard. This coefficient is calculated only if the tests have made it possible to carry out and keep at least 3 rounds per measurement. A CV greater than 50% indicates an addiction or awareness effect.

B) Evaluation of the reduction of odor molecules by analysis of volatile organic compounds (VOCs) by thermoresorption (TD / GC / MS)

Experimental protocol

In parallel with the dynamic dilution olfactometry test, a VOC analysis by TDS-GC-MS was carried out.

4:30 after introduction of the mixture, placing on a Tenax® type cartridge for analysis of VOCs, making it possible to detect chemical components containing ~ 3 to ~ 18 carbon atoms, was carried out. Between each test, the enclosure was placed under a flow of clean air.

After sampling, the Tenax® cartridge is then thermosorbed in the TDS injector. The VOCs are separated on an apolar column and detected by mass spectrometry (MS). The identification as well as the quantification are carried out in accordance with ISO 160006. Each compound is identified by its mass spectrum (if present in our libraries) and / or on the basis of its retention time (if included among our standards).

Furfural and 2-ethyl-5-methyl-pyridine are the main compounds in the mixture, the reduction of which is at least 60% of the initial concentration. This same percentage of reduction concerns two glycol ethers. Acetic acid and propanoic acid and a glycol ether are killed 100% by the additive coating.

Results

The results obtained from this thermoresorption test are shown in Table 2 below:

Table 2

Detected (<2 μg / In ³ )

Ether of glycol Ether of glycol 2-ethyl-5- methyl- pyridine Ether of glycol Furfural Acid propanoic 3-Methyl- butanal Acid acetic Dimethyl sulfide Compounds 18113- 81-0 98-01-1 1 O <0 1 590-86-3 64-19-7 75-18-3 CAS # 23, 83 23, 63 22.78 22.61 14.22 8, 95 7.02 5, 76 I- ¹ R.T. (min) 56.2 2812.1 146.3 936.0 <0 71.1 37.3 71.5 Toluene equivalent concentration (pg / m ³ ) Odorous mixture alone I- ¹ -J ND 1127.5 13.0 260.3 ND 46, 7 ND 25.0 Toluene equivalent concentration (pg / m ³ ) Fragrant mixture + paint from Example 2 ΟΊ I— ¹ 100 ΟΊ O H * 72 100 34 100 65 & PJ tr PJ S * 0 3 0 3 Γ + ND ND ND ND ND ND ND ND ND Toluene equivalent concentration (pg / m ³ ) White of 1 enclosure

Example 4 (of the invention)

A satin paint having the following formulation was prepared by mixing the ingredients in the usual manner for the paints:

Parties in

Weight ingredient • Sodium benzoate (anti-rust additive), marketed by the company "Quaron" .............................. 0, 10 • Propylene glycol (diluent), marketed by the company “Quaron” .............................. 0.97 • Biocide marketed under the brand "ROCIMA ™ 633" by the company "The

Dow Chemical Company ”.................. 0.2 5 • Polymer in acrylic emulsion (binder) sold under the brand“ UCAR ™ DL 420 G ”by the company“ The Dow Chemical Company "...................... 33.60 • Rheology modifier marketed under the brand name" ACRYSOL RM 5000 "by the company" The Dow Chemical Company " 3.00 • Dispersant sold under the brand name “Ecodis PE 2 83” ....................... 0.50 • Anti-foam additive sold under the brand “BYK 1615” by the company “BYK” ................................. 0.45 • Titanium dioxide RDIS marketed by the company "Huntsman" ................. 16.30 • Calcium carbonate marketed under 15.10 the brand "Omycarb 850 OG" by the company "Omya" ........................

• Styrene / opaque acrylic copolymer (binder) sold under the brand name "Ropaque EXP

0 ".................................

• Coalescing agent marketed under the name "Optifilm Enhancer 300" by the company "IMCD" ...........

• Zinc salt of ricinoleic acid sold under the name "TEGO SORB B80" by the company Evonik ..........................

• Polyurethane thickener sold under the brand name "COAPUR ™ XS 71" by the company "Omya" ........................

• Water .....................................

14, 82

1.20

5.00

0.23 8.48

Example 5: Evaluation of the reduction of the odor molecules by the paint of Example 4

The reduction in odor molecules was evaluated by dynamic dilution olfactometry test as in Example 3. The results are expressed in Table 3.

Table 3

Example of invention 4 Cod (uoE / m ³ ) yta) (uoE / m ³ ) (%) % abatement 1 hour after introduction some mixture 2800 6010 32 15 3 h after introduction some mixture 2380 2240 8 58

(a) and (b): see definitions at the foot of Table 1

Claims (12)

1 - Use of a zinc salt of ricinoleic acid as an additive in a paint to eliminate bad odors prevailing in the air, in particular in the air inside a room, a house or a building, at least one interior wall or part of interior wall of said room, of said dwelling or of said building or at least one support being in said room, said dwelling or said building being painted using said paint. 2 - Use according to claim 1, characterized in that the zinc salt of ricinoleic acid is used in an amount of 0.5 to 5 parts by weight, in particular from 3 to 5 parts by weight, per 100 parts in weight of the paint composition. 3 - Paint composition for eliminating unpleasant odors prevailing in the air in a room, a house or a building, characterized in that it comprises, as anti-odor additive, a zinc salt of ricinoleic acid . 4 - paint composition according to claim 3, characterized in that the zinc salt of ricinoleic acid is used in an amount of 0.5 to 5 parts by weight, in particular from 3 to 5 parts by weight, per 100 parts by weight of the paint composition. 5 - Paint composition according to one of claims 3 or 4, characterized in that it comprises, in water: - At least one binder, chosen in particular from a polymer in acrylic emulsion and a styrene / acrylic copolymer, in a proportion in particular from 10 to 50 parts by weight; - At least one pigment / filler, chosen in particular from titanium dioxide, talc, calcium carbonate and their mixtures, in particular at a rate of 25 to 70 parts by weight; - At least one diluent, which is in particular propylene glycol, in particular at a rate of 0.90 to 1.30 parts by weight; - At least one biocide, chosen in particular from chloromethyl-methylisothiazolone, benzisothiazolone and their mixtures, in particular at a rate of 0.20 to 0.30 parts by weight; - at least one rheology modifier, in particular at a rate of 2.80 to 3.20 parts by weight; - At least one dispersant, in particular at a rate of 0.40 to 1.20 parts by weight; - At least one anti-foam additive, in particular at a rate of 0.15 to 0.50 parts by weight; - At least one coalescing agent, in particular at a rate of 0.90 to 1.30 parts by weight; and - At least one thickener, in particular at a rate of 0.20 to 0.40 parts by weight; the parts by weight being indicated per 100 parts by weight of the paint composition. 6 - Paint composition according to one of claims 4 and 5, characterized in that it has at least one of the following characteristics: - in the case of a matt paint: - density: 1.63 g / 1 - viscosity HERE: 3.0-3.5 poises - MS3 viscosity: 40-45 - pH: 8 - 9 - gloss: <2% at 85 ° C - dry mass extract: 62 - 66% - dry volume extract: 40 - 44%; and - in the case of a satin paint: - density: 1.631 g / 1 - viscosity HERE: 3.0-3.5 poises - MS3 viscosity: 45-50 - pH: 8 - 9 - gloss: <15% at 60 ° C - dry mass extract: 50 - 54% - dry volume extract: 35 - 39%. 7 - paint composition according to one of claims 4 to 6, characterized in that it leads to a paint which after one hour has a reduction of at least 15% of bad odors, in particular of at least 60% of bad odors. 8 - paint composition according to one of claims 4 to 7, characterized in that it leads to a paint which has a desorption 5 less than 1% at 24 hours. 9 - paint composition according to one of claims 4 to 8, characterized in that it results in a paint having a lifespan of at least 3 10 years, said lifespan being the duration until saturation of said paint with odor molecules. 10 - Method of eliminating or destroying bad odors prevailing in the air of a room, a 15 house or building, characterized in that at least one interior wall or part of the interior wall of said room, said house or said building or at least one support located in said room, said house is painted or said building using 20 of the paint composition according to any one of claims 3 to 9.