SURFACE-COATING FLUID COMPOSITION FOR ABSORBING AND DIFFUSING VOLATILE COMPOUNDS

Abstract

The invention relates to a paint- or ink-type liquid composition which is applied to any substrate and forms a solid surface coating, and which can be loaded with a semiochemical compound and can then gradually diffuse said compound over long periods

Claims

1. A method for diffusing a semiochemical substance comprising the following steps: a. providing a solid composition comprising a polymeric resin, an optional filler and an optional pigment, b. Bringing a composition comprising a semiochemical substance into contact with the solid composition, c. Impregnating the solid composition with the composition comprising the semiochemical sub stance, d. Diffusing said semiochemical substance from the solid composition, e. optionally repeating steps b to d, characterized in that the solid composition comprising a polymeric resin further comprises at least one acrylic block copolymer, said acrylic block copolymer comprising at least one alkyl polymethacrylate block and at least one alkyl polyacrylate block; said copolymer being dispersed and immobilized in the polymeric resin, characterized in that step a) is preceded by steps α1) to α3); step α1) comprising providing a liquid composition comprising at least one polymeric resin, at least one solvent, optionally at least one pigment, optionally at least one filler and at least one acrylic block copolymer, said acrylic block copolymer comprising at least one alkyl polymethacrylate block and at least one alkyl polyacrylate block; step α2) comprising applying the liquid composition on a substrate and step α3) comprising evaporating the solvent.

2. The method according to claim 1, characterized in that the solid composition is secured to a substrate, in particular in the form of a thin layer.

3. The method according to claim 2, characterized in that the substrate is made of a material selected from the group comprising glass, textile, paper, cardboard, plastic, metal and ceramic.

4. The method according to claim 1, characterized in that the acrylic block copolymer is a bi-block copolymer or a tri-block copolymer.

5. The method according to claim 1, characterized in that the tri-block copolymer comprises at most 2 identical blocks.

6. The method according to claim 1, characterized in that the alkyl polymethacrylate is polymethyl methacrylate (PMMA).

7. The method according to claim 1, characterized in that the alkyl polyacrylate is selected from the group consisting of poly butyl acrylate (PABu) and a copolymer of butyl acrylate and 2-ethylhexyl acrylate.

8. The method according to claim 1, characterized in that the acrylic block copolymer is a tri-block copolymer of the PMMA-PABu-PMMA type.

9. The method according to claim 1, characterized in that the semiochemical substance is an animal pheromone.

10. The method according to claim 9, characterized in that the animal pheromone is selected from pheromones of dogs, cats, horses, cattle and pigs.

11. The method according to claim 9, characterized in that the animal pheromone is an appeasing pheromone.

12. The method according to claim 9, characterized in that step d) of diffusion of said semiochemical substance from the impregnated solid composition is carried out at the living area of an animal.

13. The method according to claim 12, characterized in that the solid composition according to the invention is applied on a substrate selected from the group comprising a mat, a cushion, a basket, a cover, a transport case, a pet house, a barrier, a collar, a harness, a jacket, a mantle, a saddle.

14. A liquid composition comprising at least one polymeric resin, at least one solvent, optionally at least one pigment, optionally at least one filler, optionally at least one semiochemical substance and at least one acrylic block copolymer, said acrylic block copolymer comprising at least one alkyl polymethacrylate block and at least one alkyl polyacrylate block, characterized in that the polymeric resin is selected from the group comprising cellulosic resins, vinyl resins and polyurethane, mono or bicomponent resins.

15. The composition according to claim 14, characterized in that said composition is hardened or solidified and the polymeric resin constitutes a continuous phase wherein there is dispersed and immobilized the at least one acrylic block copolymer comprising at least one alkyl polymethacrylate block and at least one alkyl polyacrylate block, the optional filler and the optional pigment.

16. An article comprising a solid composition according to claim 15.

17. The article according to claim 16, characterized in that the surface of the article is coated in whole or in part by the solid composition.

18. The article according to claim 16, characterized in that it is made of glass, textile, paper, cardboard, plastic, brick, metal or ceramic.

19. The article according to claim 16, characterized in that it is in the form of a mat, a cushion, a basket, a cover, a collar, a harness, a saddle, a toy, a ball, a balloon, a stuffed toy, a rope, a ring, a trunk, a tower.

20. The use of a composition according to claim 14, comprising at least one semiochemical substance for the diffusion of said semiochemical substance.

21. The use of a composition according claim 14, for the absorption and the diffusion of a semiochemical substance.

Description

EXAMPLES

Materials and Raw Materials

[0098] The block copolymer materials are materials from the nanostrenth® line sold by Arkema, for example M53, M65 or M53F. The pheromones are synthesized by M2i Development or M2i Salin according to methods already reported in the literature. The pheromone of the Lobesia Botrana (European grapevine moth) is 7E,9Z-dodecadienylacetate (CAS: 54364-62-4) of molar mass 224.34 g/mol. Methyl laurate (CAS 111-82-0) with molar mass 214.34 g/mol is one of the components of the FELIWAY appeasing pheromonal composition. The commercial inks are purchased from TIFLEX.

[0099] Example 1: Demonstration of the retention effect on films of block copolymers:

[0100] A block copolymer solution M53 in ethyl acetate is prepared at 20% by weight. By means of a glass pipette, 10 mL of solution are deposited in an aluminum tray 10 cm in diameter. The tray is placed in a ventilated oven for 24 hours. A homogenous block copolymer film is obtained. 10 trays are thus prepared and numbered from 1 to 20.

[0101] 100 mg of pheromone of lobesia (7E,9Z-dodecadienylacetate) are deposited on the trays numbered from 1 to 5. 100 mg of methyl laurate is deposited on those numbered from 6 to 10. The two active agents are applied to the film by means of a spray of pheromone solution diluted to 20% in pentane. The trays are left in open air until the active ingredient disappears. The trays are deposited in a ventilated oven maintained at 40° C. (lobesia) or 30° C. (methyl laurate). Two blank trays are loaded with the same amount of each active agent.

[0102] The trays are regularly analyzed to determine the level of residual pheromone (by simple weighing or preferentially by gas chromatography).

[0103] In Table 1 below, the diffusion time in the oven necessary to arrive below 10% residual active agent is reported relative to the quantity introduced.

TABLE-US-00001 TABLE 1 Unladen tray (reference) 1 2 3 4 5 6 7 8 9 10 Lobesia 72 h — — — — — 720 h 696 h 744 h 720 h 672 h (% res) Methyl 24 h 240 h 264 h 226 h 240 h 240 h — — — — — laurate (% res)

[0104] This example shows the retention effect of a surface treated by block copolymer film deposition relative to an untreated surface.

[0105] Example 2: Demonstration of the effect of the copoblock by comparing an ink without added block copolymers to an ink with such additive.

[0106] Square glass plates with 10 cm sides are printed by conventional screen printing with two commercial blue inks of the polyworks (TIFLEX) and vinyl (TIFLEX) types. A series of plates is used without treatment, while the other series is treated with a spray of a 10% solution of M53 block copolymers without ethyl acetate. Once dried, these plates are not visually different from the untreated plates.

[0107] In the four series of plates, lobesia pheromone and methyl laurate in 20% solution in pentane are sprayed. The plates are left in air and then left to diffuse in a ventilated oven at 30° C. and 40° C. for the plates impregnated with lobesia and the plates impregnated with methyl laurate, respectively. The trays are regularly analyzed to determine the level of residual pheromone (by simple weighing or preferentially by gas chromatography).

[0108] In Table 2 below, the diffusion time in the oven necessary to arrive below 10% residual active agent is reported relative to the quantity introduced.

TABLE-US-00002 TABLE 2 Polyworks ink Vinyl ink Unladen Without With Without With Without With Without With tray copoblock copoblock copoblock copoblock copoblock copoblock copoblock copoblock (reference) additive additive additive additive additive additive additive additive 8 Lobesia 72 h 72 h 168 h — — 72 h 168 h — — (% res) Methyl 24 h — — 24 h 96 h — — 24 h 96 h laurate (% res)

[0109] This example shows the retention effect of an ink-coated surface and with added block copolymer with respect to an untreated surface and an ink-coated surface.