EP1979521B1 - Novel method for impregnating a textile surface - Google Patents

Abstract

The present invention relates to pharmaceutical compositions for treating inflammatory skin, eye and/or ear diseases comprising 4{4-[3-(4-chloro-3-trifluoromethylphenyl)-ureido]-3-fluorophen-oxy}-pyridine-2-carboxylic acid methylamide optionally combined with at least one additional therapeutic agent.

Description

The present invention relates to a process for impregnating a textile surface in which the textile surface is brought into contact with at least one fixed and hollow cylinder dispensing through orifices, present on the contact surface between the cylinder and the textile surface, an impregnating liquid, so as to impregnate said textile surface on one of its faces. The method of the invention thus makes it possible to impregnate a textile surface in a controlled, precise and productive manner.

PRIOR ART

Methods for treating textile surfaces have been described in very different technical fields, such as the patent application GB 943 229 A concerning the textile washing or the patent application US-A-5,404,605 describing a dye applicator. FR-A-2255961 (Nearest prior art) discloses a process for impregnating textile materials . There are many useful techniques for impregnating a textile surface with a fluid treatment. The most common technique is that of padding, which generally consists in passing the textile surface in a bath containing the fluid impregnating product, then expressing the excess fluid absorbed by applying a pressure between two squeezing rolls. or wipers, and finally to go into a drying oven. Indeed, when the textile surface is treated with a formulation comprising a diluent or organic solvent, it is desirable to subsequently remove the diluent or solvent, for example to subject this article a heat treatment to expel the diluent or the solvent under form of steam. The Figure 1 shows one of the variants of this widespread technique.

• Elle est particulièrement inadaptée aux produits d'imprégnation qui sont sensibles au contact avec l'atmosphère environnante, tel que l'humidité ou l'oxygène, car la surface du bain est exposée en permanence ainsi que le produit en excès qui retombe dans le bain avec régularité en exposant une grande surface à l'air ambiant.
• Elle n'offre pas un contrôle précis de la quantité déposée au cours du procédé, car il peut se produire des phénomènes de modification de la concentration du bain : évaporation du solvant à la surface du bain et au retour des rouleaux exprimeurs. Les phénomènes de mouillage et capillarité peuvent aussi impacter sur les quantités de produits emportées par le textile lors de sa traversée du bain.
• En terme d'hygiène et sécurité industrielle, l'utilisation de produits en phase solvants entraîne la présence de grandes surfaces d'évaporation et des dispositifs complexes et coûteux sont nécessaires pour canaliser les atmosphères résultantes comprenant du solvant.
• La pollution du bain par des résidus provenant de la surface textile est également un problème fréquent et préjudiciable à la qualité de l'imprégnation.
• Du fait des turbulences provoquées par les différents mouvements du fluide à imprégner, il se produit fréquemment des formations de mousses qui sont préjudiciable au fonctionnement de l'installation et quelquefois à l'aspect de l'article fini.
• Elle ne convient pas non plus dans le cas ou l'on souhaite imprégner une seule face du textile à traiter, ce qui constitue un cas de plus en plus fréquent dans la profession avec les tissus laminés et les articles multi-couches.

This very useful technique, in the general case of the treatment of a simple textile surface with a non-reactive product, however, has many limitations. which may limit the effectiveness and accuracy of the treatment. In particular, the following points should be noted:

• It is particularly unsuitable for impregnation products that are sensitive to contact with the surrounding atmosphere, such as moisture or oxygen, because the surface of the bath is permanently exposed as well as the product. in excess which falls back into the bath with regularity by exposing a large surface to the ambient air.
• It does not provide a precise control of the amount deposited during the process, because it can occur phenomena of changing the concentration of the bath: evaporation of the solvent on the surface of the bath and the return of the squeezing rolls. The wetting and capillarity phenomena can also affect the quantities of products carried by the textile during its crossing of the bath.
• In terms of hygiene and industrial safety, the use of solvent phase products results in the presence of large evaporation surfaces and complex and expensive devices are required to channel the resulting atmospheres comprising solvent.
• Pollution of the bath by residues from the textile surface is also a frequent problem and prejudicial to the quality of the impregnation.
• Due to the turbulence caused by the different movements of the fluid to be impregnated, foam formations frequently occur which are detrimental to the operation of the installation and sometimes to the appearance of the finished article.
• It is also unsuitable in the case where it is desired to impregnate a single face of the textile to be treated, which is a case of increasing frequency in the profession with laminated fabrics and multi-layer articles.

There is another technique for impregnating a complex textile surface on one side only and is known as kiss roll impregnation. It consists of passing the textile surface in contact with a roller that rotates in the bath and impregnates product that it then transfers to the textile surface. As before, the textile surface is then conveyed through a drying oven. The Figure 2 illustrates one of the variants of this impregnation technique.

• Lorsque la viscosité du produit d'imprégnation est vraiment très faible, la quantité emportée par le rouleau lécheur l'est également et il est quelquefois impossible de compenser par la vitesse de rotation différentielle de ce rouleau pour apporter la quantité d'imprégnant souhaitée sur la surface textile. Cela est particulièrement vrai lorsque l'on souhaite véritablement réaliser une imprégnation en profondeur du textile et, dans ce cas, une viscosité faible est recommandée.
• La manipulation d'un produit d'imprégnation réactif vis-à-vis de l'atmosphère environnante est tout aussi peu recommandée que dans le cas du foulardage du fait notamment de l'exposition du bain et du transfert d'une couche mince de produit sur le rouleau.
• La pollution du bain est un problème moins intense que dans le cas du foulardage, mais elle peut cependant se produire.
• Cette technique nécessite des vitesses de défilement du textile relativement limitées, limitant ainsi la productivité de la ligne de traitement.
• Dans ce cas également, les phénomènes de moussage sont susceptibles d'apparaître et de générer des problèmes de qualité de la surface textile traitée.
• Suivant les liquides d'imprégnation utilisés, notamment ceux qui réticulent

ou réagissent au contact de l'air, le rouleau lécheur aura tendance à s'encrasser et à provoquer des marques sur la surface textile.This technique is relevant in a number of cases to treat a textile on one side, is not at all suitable in the following cases:

• When the viscosity of the impregnating product is really very low, the amount carried by the squeegee roll is also very small and it is sometimes impossible to compensate for the differential rotation speed of this roll to bring the desired amount of impregnating agent onto the roll. textile surface. This is particularly true when it is truly desired to achieve deep impregnation of the textile and, in this case, a low viscosity is recommended.
• The handling of a reactive impregnating product vis-à-vis the surrounding atmosphere is just as recommended as in the case of padding due in particular to the exposure of the bath and the transfer of a thin layer of product on the roll.
• Bath pollution is less of a problem than padding, but it can occur.
• This technique requires relatively limited speeds of textile travel, thus limiting the productivity of the treatment line.
• In this case also, the foaming phenomena are likely to appear and generate quality problems of the treated textile surface.
• Depending on the impregnating liquids used, especially those that crosslink

or react with air, the wiper will tend to become dirty and cause marks on the textile surface.

There is thus a real need to develop an industrially viable textile surface impregnation process avoiding the disadvantages mentioned above.

INVENTION

In order to solve the problem stated, the Applicant has developed a particularly suitable technology for impregnating one of the faces of a complex textile surface with a fluid product, in particular a reactive one or having a sensitivity to the surrounding atmosphere.

This technique is based on the use of a fixed perforated lick cylinder, ie. not rolling, dispensing through a battery of orifices arranged on one or several generatrices of the cylinder the appropriate amount of impregnating liquid directly on one of the faces of the textile surface.

• Le produit d'imprégnation peut être appliqué de manière quantitativement contrôlée sur l'une des faces d'un textile complexe. Il suffit de contrôleur pour cela la vitesse de défilement de la surface textile, le débit du liquide d'imprégnation sur la surface textile, le positionnement et la géométrie du cylindre creux perforé, tel que le positionnement et le diamètre des orifices de distribution. L'adaptation de ces paramètres permet notamment de pouvoir utiliser le procédé de l'invention quels que soit la nature du fluide d'imprégnation et de la quantité à dispenser par unité de surface.
• Le procédé ne génère pas ou très peu la formation de mousse.
• La viscosité du liquide d'imprégnation peut être très faible, facilitant ainsi la pénétration au coeur de la structure textile.
• Le produit d'imprégnation n'est jamais exposé à l'atmosphère environnante avant application définitive sur la surface textile.
• Il n'y a aucun risque de pollution du produit d'imprégnation par des impuretés provenant de la surface textile.
• La productivité de cette technique est excellente puisqu'il suffit de dispenser la dose de produit d'imprégnation voulue et de forcer éventuellement la pénétration dans la surface textile à l'aide de racles ou cylindres, ou tout autre dispositif optionnel destiné à forcer la pénétration au sein de la structure textile.
• D'un point de vue hygiène et sécurité, les émanations de solvant, dans le cas d'un produit présenté en phase solvant organique, sont limitées dans l'atmosphère.
• Enfin, la concentration du produit d'imprégnation est toujours optimale puisque celui-ci est déposé directement.

The advantages of this technique are:

• The impregnating product can be applied in a quantitatively controlled manner on one of the faces of a complex textile. For this purpose, the speed of movement of the textile surface, the flow rate of the impregnating liquid on the textile surface, the positioning and the geometry of the perforated hollow cylinder, such as the positioning and the diameter of the dispensing orifices, are sufficient for this purpose. The adaptation of these parameters makes it possible in particular to be able to use the process of the invention whatever the nature of the impregnating fluid and the quantity to be dispensed per unit area.
• The process generates little or no foam formation.
• The viscosity of the impregnating liquid can be very low, thus facilitating penetration into the heart of the textile structure.
• The impregnating product is never exposed to the surrounding atmosphere before final application on the textile surface.
• There is no risk of contamination of the impregnating product with impurities from the textile surface.
• The productivity of this technique is excellent since it is sufficient to dispense the dose of impregnating product desired and possibly force the penetration into the textile surface using doctor blades or cylinders, or any other optional device for forcing penetration within the textile structure.
• From a hygiene and safety point of view, solvent fumes, in the case of a product presented in the organic solvent phase, are limited in the atmosphere.
• Finally, the concentration of the impregnating product is always optimal since it is deposited directly.

Thus, the process of the invention makes it possible to impregnate a textile surface in a controlled, precise and productive manner.

FIGURES

The Figure 1 shows an example of a process for padding a textile surface according to the prior art. The textile surface 1 is brought into a bath 2 containing an impregnating fluid at first, then passes through spinning rolls 9 before passing through a drying oven 3 in which the solvent is extracted.
The Figure 2 shows an example of a kiss roll impregnation method of a textile surface according to the prior art. The textile surface 1 passes into contact with a roller 4 which rotates in the bath 2 and impregnates with product which it then transfers onto the textile surface. As before, the textile surface is then conveyed to a spin roller 9 before passing into a drying oven 3.
The Figure 3 shows an example of a method of treating a textile surface by impregnation according to the invention. The textile surface 1 comes into contact with a perforated cylinder 5 which impregnates product with said surface, the position of the holes relative to the textile or the vertical can be optimized depending on the nature of the textile or the solution for example. The textile surface then passes under a doctor blade 6 which forces the penetration of the product within the textile structure. Finally, the textile surface is then conveyed through a drying oven 3. The perforated cylinder 5 is supplied with product by a reservoir 8 via a pump 7.
The Figure 4 shows an example of a method of treating a textile surface by impregnation according to the invention. The textile surface 1 comes into contact with a perforated cylinder 5 which impregnates product with said surface. The textile surface then passes between two pressure rollers 9 which force the penetration of the product within the textile structure. Finally, the textile surface is then conveyed through a drying oven 3. The perforated cylinder 5 is supplied with product by a reservoir 8 via a pump 7.

DETAILED DESCRIPTION OF THE INVENTION

The present invention firstly relates to a process for impregnating a textile surface, in which the textile surface is brought into contact with at least one fixed and hollow cylinder dispensing through orifices present on the surface. contact between the cylinder and the textile surface, an impregnating liquid, so as to impregnate said textile surface on one of its faces.

According to the invention, the cylinder is hollow and comprises within it the impregnating liquid. As explained below, the cylinder can be supplied with impregnating liquid in various ways. According to the invention; the cylinder is fixed in the process defined above. The fact that the cylinder is not a roller or a rotating object makes it possible to prevent certain impregnating liquid which crosslinking or reacts in the presence of air, from fouling the entire surface of said cylinder and thus causing marks and soiling on the textile surface.

The process according to the invention can be carried out continuously or discontinuously. The means for bringing the textile surface to the perforated hollow cylinder and optionally to other finishing steps are those conventionally used in the field, such as those used in the padding process, such as rollers for example.

For the purposes of the invention, the term "textile surface" means a generic term encompassing all textile structures. The textile surfaces may be any textile fiber, yarn, filament and / or other material. They include soft fabrics, whether woven, glued, knitted, braided, felt, needled, sewn or made by another method of manufacture. In the technical field of textiles, the word cloth is also used to designate textile surfaces.

Wire means, for example, a continuous multifilament object, a continuous yarn obtained by assembling several yarns or a continuous yarn of fibers, obtained from a single type of fibers, or a mixture of fibers. By fiber is meant for example a short or long fiber, a fiber to be worked in spinning or for the manufacture of nonwoven articles or a cable to be cut to form short fibers.

The textile surface may well consist of yarns, fibers and / or filaments having undergone one or more treatment steps before the production of the textile surface, such as, for example, texturing, drawing, drawing-texturing, sizing, relaxation, heat setting, twisting, fixing, crimping, washing and / or dyeing.

• les textiles naturels, tels que : les textiles d'origine végétale, comme le coton, le lin, le chanvre, la jute, la coco, les fibres cellulosique du papier ; et les textiles d'origine animale, comme la laine, les poils, le cuir et les soies ;
• les textiles artificiels, tels que : les textiles cellulosiques, comme la cellulose

ou ses dérivés ; et les textiles protéiniques d'origine animale ou végétale ; et

• les textiles synthétiques, tels que le polyester, le polyamide, les alcools polymalliques, le chlorure de polyvinyle, le polyacrylonitrile, les polyoléfines, l'acrylonitrile, les copolymères (méth)acrylate-butadiène-styrène et le polyuréthane.

According to the invention, any type of textile material can be used for the manufacture of textile surfaces. As an indication, we can mention:

• natural textiles, such as: textiles of plant origin, such as cotton, flax, hemp, jute, coconut, cellulosic fibers of paper; and textiles of animal origin, such as wool, hair, leather and silks;
• artificial textiles, such as: cellulosic textiles, such as cellulose

or its derivatives; and protein textiles of animal or vegetable origin; and

• synthetic textiles, such as polyester, polyamide, polymallic alcohols, polyvinyl chloride, polyacrylonitrile, polyolefins, acrylonitrile, (meth) acrylate-butadiene-styrene copolymers and polyurethane.

The synthetic textiles obtained by polymerization or polycondensation can in particular comprise in their matrix different types of additives, such as pigments, delustrants, mattifying agents, catalysts, heat and / or light stabilizers, anti-static agents, flame retardants anti-bacterial, anti-fungal and / or anti-mite agents.

As a type of textile surface, mention may be made in particular of the surfaces obtained by rectilinearly crossing the threads or fabrics, the surfaces obtained by curvilinear interweaving of the threads or knits, the mixed or tilted surfaces, the nonwoven surfaces and the composite surfaces. Among the multitude of possible textile surfaces used in the process of the invention, mention may be made of felts, denims, jacquard weaves, needles, sewn, crocheted, grenadines, serrated, damask, veils, alpacas, baratheas, basins, buckles, brocades, calico, velvet, canvas, rags, flocked, glue, stamens, braids, faults, scarves, gauzes, geotextiles, jaspés, quilts, tufted, organzas, pleats, ribbons, and canvases.

The textile surface used in the process of the present invention may consist of one or more textile surfaces, identical or different, assembled in various ways. The textile surface may be mono- or multilayer (s).

The textile surface may, for example, consist of a multilayer structure that can be produced by various assembly means, such as mechanical means such as sewing, welding, or spot or continuous bonding.

The structures may comprise at least two textile surfaces, in particular that defined above. For example, laminates made by gluing a microporous membrane of PTFE, polyurethane or polyester in particular, between two textile layers; or laminates made by coating (polyurethane, silicone, or other) inserted between two textile layers.

According to the method of the present invention, the textile surface is brought into contact with a fixed hollow cylinder comprising perforations in the zone of contact with said textile surface.

The cylinder of the invention may consist of a large variety of possible materials. It should be noted that the choice of a material for producing said cylinder according to the invention is generally guided by criteria of cost and properties, depending on the application. Thus depending on the use that will be made of an object and the environment in which it will be used will require different properties, such as abrasion resistance, resilience, rigidity, flexibility, dimensional stability, deformation temperature under load, resistance to heat, impermeability to certain chemical substances, resistance to contact with certain substances, etc. Preferably, the cylinder may especially consist of one or more materials chosen preferentially in the group including: metal, glass, wood, materials thermoplastics, thermosetting materials, their blends and / or assemblies.

Within the meaning of the invention, the cylinder can perfectly have a totally cylindrical appearance or a different appearance provided that the contact surface between the textile surface and the zone dispensing the impregnation liquid through the orifices has a rounded convex shape, so not to damage the textile surface during its scrolling. Said contact surface may have a cross section in the form of a semicircle or U for example. The rest of the cylinder, that is to say except for said contact surface, may have a cross section having a planar and / or curved profile, for example in the form of U, V, semicircle, rectangle at right angles and / or rounded, concave and / or convex. This cylinder may thus have flat areas and / or areas with curvatures. Finally, the cylinder may have a more or less complex structure, for example with spaces for housing other parts, reinforcing ribs, assembly means with other parts or systems of parts.

In particular, the cylinder used in the process of the invention can be defined by its length and its diameter. As far as the length is concerned, it will be chosen to take into account the dimensions, in particular the width, of the textile surface to be impregnated. In particular, it is possible to use a cylinder having an adaptable length, for example by sliding different sections. As regards the diameter, it will be necessary to take into account the type of textile surface used, the desired contact surface between the roll and the textile surface, and the type and amount of impregnating liquid used in the process. The cylinder may for example have a diameter of between 5 and 200 mm, preferably between 10 and 100 mm.

As explained above, the cylinder comprises orifices in the zone of contact with said textile surface. It is thus understood that the cylinder preferably does not include orifices outside this contact zone so as not to dispense, and therefore lose, impregnation liquid in the device.

The mean diameter of the orifices of the perforated cylinder may in particular be between 0.05 and 5 mm, preferably between 0.1 and 1 mm. It should be noted that the perforated cylinder can perfectly include orifices of the same or different diameters.

The orifices may be arranged variously on the contact surface of the cylinder in contact with the textile surface, for example randomly, in one or more parallel lines along the length of the cylinder, or in zig-zag. It should be noted that different geometries are possible depending on the nature of the textile to be treated. It is also conceivable to produce discontinuous impregnations by limiting the dispensing orifices in certain zones of the textile surface.

In a preferential manner, the spacing between the orifices of the cylinder is such that it is possible to obtain total impregnation of the textile surface as it passes over the contact surface of the cylinder, taking into account, in particular, the capacitance diffusion of the impregnating liquid on the textile surface.

Even more preferably, the spacing and the positioning of the orifices of the cylinder can obey the following relationship: 0.1 ≤ L ≤ 10, and more preferably 0.5 ≤ L ≤ 2. With L corresponding to the ratio between the total theoretical length of the orifices arranged next to each other along the length of the cylinder; and the length of the cylinder. It should be noted that L may be greater than 1, especially when the orifices are arranged zig-zag on the contact surface of the cylinder.

The cylinder can be perforated by various methods well known to those skilled in the art. The cylinder may for example be perforated by laser, electro-erosion, punching including hot, for example using needles, or by drilling including using a drill.

Preferably, the method of the invention comprises means for bringing the impregnating liquid into the perforated hollow cylinder. This means can in particular be a pump that draws the liquid into a reservoir and brings it to said cylinder. This means may also be a device allowing the gravity to bring the liquid from the tank to the cylinder, or a device in which a pressure on the tank allows to bring the liquid from the reservoir to the cylinder.

• des agents pour teinture, tels que des colorants et pigments,
• des agents de blanchiment, tels que l'eau oxygénée (peroxyde d'hydrogène) et de manière plus générale tout les peroxydes et persels employés dans ce domaine.
• des agent de glaçage, tel que l'amidon,
• des agents de mercerisage, tel que la soude,
• des agents d'imperméabilisation et d'hydrofugation, tels que les paraffines, les résines fluorées, les résines silicones, par exemple en voie solvant ou aqueuse.
• des agent d'ignifugation, tels que les composés phosporés utilisés dans l'ignifugation du coton, par exemple.
• des agents anti-taches, tels que les composés fluorés, par exemple.
• des agents anti-bactériens, anti-fongiques, et/ou anti-acariens.
• des agents de déperlance, tels que les paraffines, les résines silicones et fluorées La déperlance est une caractéristique de la surface du textile. Elle correspond au fait que sous aspersion modérée, représentative d'une légère pluie, l'eau ne s'accroche pas ou peu sur le textile.
• des agents adoucissants tels que les adoucissants cationiques ou les adoucissant silicones.

The process according to the invention aims at the treatment by impregnation of a textile surface. It is perfectly possible to use any type of impregnating liquid to impregnate the textile surface according to the invention. By way of nonlimiting example, the impregnating liquid may comprise one or more agents of interest chosen from the group comprising:

• dyeing agents, such as dyes and pigments,
• bleaching agents, such as hydrogen peroxide (hydrogen peroxide) and more generally all the peroxides and persalts used in this field.
• icing agents, such as starch,
• mercerising agents, such as sodium hydroxide,
• waterproofing agents and water repellents, such as paraffins, fluorinated resins, silicone resins, for example in the solvent or aqueous route.
• flame retardants, such as the phosphate compounds used in the fireproofing of cotton, for example.
• anti-stain agents, such as fluorinated compounds, for example.
• anti-bacterial, anti-fungal and / or anti-mite agents.
• water-repellent agents, such as paraffins, silicone resins and fluorinated resins Water repellency is a characteristic of the textile surface. It corresponds to the fact that under moderate sprinkling, representative of a light rain, the water does not catch or little on the textile.
• softening agents such as cationic softeners or silicone softeners.

The impregnating liquid may have a dynamic viscosity of between 0.1 and even more preferably between 0.5 and 50, measured using a Couette viscometer or a capillary viscometer.

• des composés organiques, tels que des acrylates, éventuellement fluorés,

ou des cires ;

• des composés à base de silicone, telles que des huiles silicones, notamment fonctionnalisées (par exemple par des fonctions amines, amides, polyéthers, fluorées, époxy, hydroxyles ou acrylates) ; et/ou
• des particules solides, telles que des particules de silice, ou des nanoparticules.

The liquid compositions that can be used according to the invention can in particular comprise:

• organic compounds, such as acrylates, optionally fluorinated,

or waxes;

• silicone-based compounds, such as silicone oils, in particular functionalized oils (for example by amine, amide, polyether, fluorine, epoxy, hydroxyl or acrylate functional groups); and or
• solid particles, such as silica particles, or nanoparticles.

The impregnating liquid applied to the textile surface may be inert or reactive, that is to say that the different elements of said impregnating liquid react with each other to form assemblies and / or networks, in particular by crosslinking.

As such, mention may be made of the compounds mentioned above, in a form suitable for such a formation of assemblies and / or networks, such as, for example, functionalized acrylates or otherwise, in the presence of crosslinking agents that are well known in the art; or particles having reactive groups.

The impregnating liquid may in particular comprise compounds which are not reactive with each other, compounds which react with one another, or a mixture of reactive compounds and non-reactive compounds.

Preferably, the impregnating liquid may comprise a silicone-based composition, especially crosslinkable liquid silicone formulations.

There are many crosslinkable liquid silicone formulations that can be used to form a coating that can provide functionality to a large number of textile materials. It is possible to use a wide variety of multicomponent, two-component or one-component polyorganosiloxane (POS) compositions which crosslink at room temperature or with heat by means of polyaddition, hydrosilylation, radical reaction or polycondensation reactions. It should be noted that the silicone compositions are amply described in the literature and in particular in the work of Walter Noll "Chemistry and Technology of Silicones", Academic Press, 1968, 2nd edition, especially pages 386-409 .

• les symboles R, identiques ou différents, représentent chacun un groupement de nature hydrocarbonée non hydrolysable, ce radical pouvant être :
  • * un radical alkyle, halogénoalkyle ayant de 1 à 5 atomes de carbone et comportant de 1 à 6 atomes de chlore et/ou de fluor,
  • * des radicaux cycloalkyles et halogénocycloalkyles ayant de 3 à 8 atomes de carbone et contenant de 1 à 4 atomes de chlore et/ou de fluor,
  • * des radicaux aryles, alkylaryles et halogénoaryles ayant de 6 à 8 atomes de carbone et contenant de 1 à 4 atomes de chlore et/ou de fluor,
  • * des radicaux cyanoalkyles ayant de 3 à 4 atomes de carbone ;
• les symboles Z, identiques ou différents, représentent chacun un atome d'hydrogène, un groupement alkényle en C₂-C₆, un groupement hydroxyle, un groupement hydrolysable ;
• n = un nombre entier égal à 0, 1, 2 ou 3 ;
• x = un nombre entier égal à 0, 1, 2 ou 3 ;
• y = un nombre entier égal à 0, 1, ou 2 ; et
• la somme x + y est comprise entre 1 et 3.

More specifically, the polyorganosiloxanes in the context of polycondensation or polyaddition reaction, main constituents of the silicone-based composition, consist of siloxyl units of general formula:

R _n SiO _{(4-n) / 2} (I)

and / or siloxyl units of formula:

Z _x R _y SiO _{(4-xy) / 2} (II)

formulas in which the various symbols have the following meaning:

• the symbols R, which may be identical or different, each represent a group of nonhydrolyzable hydrocarbon nature, this radical possibly being:
  • an alkyl, haloalkyl radical having from 1 to 5 carbon atoms and having from 1 to 6 chlorine and / or fluorine atoms,
  • cycloalkyl and halogenocycloalkyl radicals having from 3 to 8 carbon atoms and containing from 1 to 4 chlorine and / or fluorine atoms,
  • aryl, alkylaryl and haloaryl radicals having from 6 to 8 carbon atoms and containing from 1 to 4 chlorine and / or fluorine atoms,
  • cyanoalkyl radicals having 3 to 4 carbon atoms;
• the symbols Z, identical or different, each represent a hydrogen atom, a C ₂ -C ₆ alkenyl group, a hydroxyl group, a hydrolysable group;
• n = an integer equal to 0, 1, 2 or 3;
• x = an integer equal to 0, 1, 2 or 3;
• y = an integer equal to 0, 1, or 2; and
• the sum x + y is between 1 and 3.

By way of illustration, mention may be made, among organic radicals R, directly linked to silicon atoms: methyl groups; ethyl; propyl; isopropyl; butyl; isobutyl; n-pentyl; t-butyl; chloromethyl; dichloromethyl; α-chloroethyl; α, β-dichloroethyl; fluoromethyl; difluoromethyl; α, β-difluoroethyl; 3,3,3-trifluoropropyl; trifluoro cyclopropyl; 4,4,4-trifluorobutyl; hexafluoro-3,3,4,4,5,5 pentyl; β-cyanoethyl; γ-cyanopropyl; phenyl: p-chlorophenyl; m-chlorophenyl; 3,5-dichlorophenyl; trichlorophenyl; tetrachlorophenyl; o-, p- or m-tolyl; α, α, α-trifluorotolyl; xylyls such as 2,3-dimethylphenyl, 3,4-dimethylphenyl. Preferentially, the organic radicals R bonded to the silicon atoms are methyl or phenyl radicals, these radicals possibly being optionally halogenated or else cyanoalkyl radicals.

The symbols Z may be hydrogen atoms, halogen atoms, in particular chlorine atoms, vinyl groups, hydroxyl groups or hydrolysable groups such as, for example: amino, amido, aminoxy, oxime, alkoxy, alkenyloxy, acyloxy.

The nature of the polyorganosiloxane and therefore the ratios between the siloxyl units (I) and (II) and the distribution thereof is as is known as a function of the crosslinking treatment which will be performed on the curable (or vulcanizable) composition. view of its transformation into elastomer.

The silicone polymer obtained may have (R) ₃ SiO _1/2 (M) units; (R) ₂ SiO _2/2 (D) units, RSiO _3/2 (T) units, and / or SiO _4/2 (Q) units, preferably at least one T unit or a Q unit.

Two-component or one-component polyorganosiloxane compositions crosslinking at room temperature or with heat by polyaddition reactions, essentially by reaction of hydrogenosilyl groups with alkenylsilyl groups, in the presence generally of a catalyst metallic, preferably platinum, are described for example in the patents US3220972 , US3284406 , US3436366 , US3697473 and US4340709 . The polyorganosiloxanes used in these compositions are generally constituted by pairs based firstly on a linear, branched or crosslinked polysiloxane consisting of units (II) in which the radical Z represents a C ₂ -C ₆ alkenyl group and where x is at least equal to 1, optionally associated with units (I), and on the other hand a linear, branched or crosslinked hydrogen polysiloxane consisting of units (II) in which the radical Z represents then an atom of hydrogen and where x is at least 1, optionally associated with units (I).

The two-component or one-component polyorganosiloxane compositions which crosslink at room temperature by means of moisture-containing polycondensation reactions, in the generally presence of a catalyst, are described, for example, for the single-component compositions in the patents. US3065194 , US3542901 , US3779986 , US4417042 , and in the patent FR2638752 , and for two-component compositions in patents US3678002 , US3888815 , US3933729 and US4064096 . The polyorganosiloxanes used in these compositions are generally linear, branched or crosslinked polysiloxanes consisting of units (II) in which the radical Z is a hydroxyl group, a halogen atom or a hydrolyzable group and where x is at least 1, with possibility of having at least one residue Z which is equal to a hydroxyl group, a halogen atom or a hydrolysable group and at least one residue Z which is equal to an alkenyl group when x is equal to 2 or 3, said units ( II) possibly being associated with patterns (I). Such compositions may further contain a crosslinking agent which is especially a silane carrying at least two, especially at least three, hydrolysable groups such as, for example, a silicate, an alkyltrialkoxysilane or an aminoalkyltrialkoxysilane.

The polyorganosiloxane components of these crosslinking compositions by polyaddition or polycondensation reactions advantageously have a viscosity at 25 ° C. of at most 100 000 mPa.s and preferably between 10 and 50 000 mPa.s.

As polycondensation reaction for the production of silicone treatment, mention is made in particular of the reaction of polyorganosiloxane resin (POS) having at least three hydrolyzable / condensable groups of OH and / or OR ¹ types where R ¹ is a linear or branched C alkyl radical. ₁ to C ₆ , preferably C ₁ to C ₃ ; and a polyorganosiloxane (POS) resin having at least one hydrolysable / condensable group of OH and / or OR ¹ types in which R ¹ is a linear or branched C ₁ to C ₆ , preferably C ₁ to C ₃ , alkyl radical; generally a polycondensation catalyst known from the field (see, for example, the application FR 2865223 ).

1. A) un système générateur de réseau silicone comprenant au moins une résine polyorganosiloxane (POS) présentant, par molécule, d'une part au moins deux motifs siloxyles différents choisis parmi ceux de types M, D, T, Q, l'un des motifs étant un motif T ou un motif Q et d'autre part au moins trois groupements hydrolysables/condensables de types OH et/ou OR¹, où R¹ est un radical alkyle linéaire ou ramifié en C₁ à C₆, de préférence en C₁ à C₃ ;
2. B) un système promoteur d'accrochage, ou catalyseur notamment de type alkoxyde ou polyalkoxyde métallique de Ti, Zr, Ge, Si, Mn et AI , tels que des titanates, zirconates et/ou silicates, notamment le zirconate de n-propyle (Pr) de formule Zr(Opr)₄, le titanate de n-butyle (Bu) de formule Ti(OBu)₄ et le silicate d'éthyle (Et) de formule Si(OEt)₄ ;
3. C) un additif fonctionnel de type silane, polyorganosiloxane ou composé organique, essentiellement linéaire ; chacun de ces composés comprenant :
   • une ou plusieurs fonctions d'accrochage capables de réagir avec A) et/ou B)

ou capable de générer in situ des fonctions aptes à réagir avec A) et/ou B), tels que des fonctions condensables/hydrolysables correspondant à OH et/ou OR¹ ou des fonctions capables de générer in situ des fonctions OH et/ou OR¹.

• une ou plusieurs fonctions capable d'apporter une propriété particulière à la surface textile à traiter, tel que par exemple :

• l'hydrophobilicité, ces fonctions peuvent porter des groupements alkyles, des groupements silicone, et/ou des groupements fluorés ; et/ou
• l'hydrophilie, ces fonctions peuvent porter des groupements amines, amides, hydroxyles et/ou polyéther.

To bring a particular property to the textile surface to be treated, it is possible in particular to use an impregnating liquid comprising a liquid silicone formulation crosslinkable by polycondensation, comprising:

1. A) a silicone network generating system comprising at least one polyorganosiloxane resin (POS) having, per molecule, on the one hand at least two different siloxyl units selected from those of types M, D, T, Q, one of the units being a T unit or a Q unit and, secondly, at least three hydrolysable / condensable groups of OH and / or OR ¹ types, where R ¹ is a linear or branched C ₁ to C ₆ , preferably C, alkyl radical. ₁ to C ₃ ;
2. B) a coupling promoter system, or catalyst, especially of the Ti, Zr, Ge, Si, Mn and Al metal alkoxide or polyalkoxide type, such as titanates, zirconates and / or silicates, especially n-propyl zirconate ( Pr) of formula Zr (Opr) ₄ , n-butyl titanate (Bu) of formula Ti (OBu) ₄ and ethyl silicate (Et) of formula Si (OEt) ₄ ;
3. C) a functional additive of silane type, polyorganosiloxane or organic compound, essentially linear; each of these compounds comprising:
   • one or more snap functions capable of reacting with A) and / or B)

or capable of generating in situ functions capable of reacting with A) and / or B), such as condensable / hydrolysable functions corresponding to OH and / or OR ¹ or functions capable of generating in situ OH and / or OR functions ¹ .

• one or more functions capable of bringing a particular property to the textile surface to be treated, such as for example:

• the hydrophobilicity, these functions can carry alkyl groups, silicone groups, and / or fluorinated groups; and or
• hydrophilicity, these functions may carry amine, amide, hydroxyl and / or polyether groups.

The crosslinkable liquid silicone formulation may comprise, for 100 parts by weight of component A), from 0.5 to 200, preferably from 0.5 to 100 and more preferably from 1 to 70 parts of component B), and from 1 to 1000, preferably 1 to 300 parts of component C).

• composition A comprenant au moins une résine polyorganosiloxane (POS) présentant, par molécule, d'une part au moins deux motifs siloxyles différents choisis parmi ceux de types M, D, T, Q, l'un des motifs étant un motif T ou un motif Q et d'autre part au moins trois groupements hydrolysables/condensables de types OH et/ou OR¹ où R¹ est un radical alkyle linéaire ou ramifié en C₁ à C₆, de préférence en C₁ à C₃ ; cette composition étant préférentiellement un mélange d'une résine MDT hydroxylée, comprenant éventuellement des motifs CH₃SiO_3/2 (T), des motifs (CH₃)₂ SiO_2/2 (D) et des motifs (CH₃)₃ SiO_1/2 (M) ; et une résine MQ hydroxylée, comprenant éventuellement des motifs SiO_4/2 (Q) et des motifs (CH₃)₃ SiO_1/2 (M).
• composition B comprenant un catalyseur, notamment de type alkoxyde ou polyalkoxyde métallique de Ti, Zr, Ge, Si, Mn et Al, tels que des titanates, zirconates et/ou silicates, notamment le zirconate de n-propyle (Pr) de formule Zr(Opr) ₄, le titanate de n-butyle (Bu) de formule Ti(OBu)₄ et le silicate d'éthyle (Et) de formule Si(OEt)₄.
• composition C comprenant une résine MDT hydroxylée comprenant éventuellement des motifs CH₃SiO_3/2 (T) des motifs (CH₃)₂ SiO_2/2 (D) et des motifs (CH₃)₃ SiO_1/2 (M) et une gomme silicone (motifs D) hydroxylée comprenant éventuellement des motifs (CH₃)₂ SiO_2/2 (D).
• un diluant, qui peut être une phase aqueuse additivée de surfactant ou encore un solvant organique, notamment des solvants aliphatiques, chlorés, aromatiques, alcanols, esters d'acides carboxyliques.

In particular, a silicone composition obtained by mixing the various compositions is preferred:

• composition A comprising at least one polyorganosiloxane resin (POS) having, per molecule, on the one hand at least two different siloxyl units selected from those of types M, D, T, Q, one of the units being a T-unit or a pattern Q and on the other hand at least three hydrolyzable / condensable groups of OH and / or OR ¹ types where R ¹ is a linear or branched C ₁ -C ₆ , preferably C ₁ -C ₃ , alkyl radical; this composition being preferably a mixture of a hydroxylated MDT resin, optionally comprising CH ₃ SiO _3/2 (T) units, (CH ₃ ) ₂ SiO _2/2 (D) units and (CH ₃ ) ₃ SiO units; _1/2 (M); and a hydroxylated MQ resin, optionally comprising SiO _{4/2 units} (Q) and (CH ₃ ) ₃ SiO _1/2 (M) units.
• composition B comprising a catalyst, in particular of Ti, Zr, Ge, Si, Mn and Al metal alkoxide or polyalkoxide type, such as titanates, zirconates and / or silicates, especially n-propyl zirconate (Pr) of formula Zr (Opr) ₄ , n-butyl titanate (Bu) of formula Ti (OBu) ₄ and ethyl silicate (Et) of formula Si (OEt) ₄ .
• composition C comprising a hydroxylated MDT resin optionally comprising CH ₃ SiO _3/2 (T) units of (CH ₃ ) ₂ SiO _2/2 (D) units and (CH ₃ ) ₃ SiO _1/2 (M) units and a hydroxylated silicone rubber (D units) optionally comprising (CH ₃ ) ₂ SiO _2/2 (D) units.
• a diluent, which may be an aqueous phase additive surfactant or an organic solvent, including aliphatic solvents, chlorinated, aromatic, alkanols, carboxylic acid esters.

The silicone composition may optionally comprise one or more other compounds taken from the group comprising in particular: reinforcing fillers
or semi-reinforcing or tamping or for adjusting the rheology of curable compositions, crosslinking agents, adhesion promoters, plasticizers, catalyst inhibitors and coloring agents.

After the impregnation process of the invention, the textile surface can be brought to a means allowing better penetration of the impregnating liquid and / or serving to uniformly apply said liquid on the textile surface. For this purpose, one or more squeegees or squeeze rollers, such as those conventionally used for padding, may be used. The doctor blade is preferred because of its static nature.

Depending on the impregnating liquids used in the process according to the invention, it may be necessary to dry the impregnated textile surface in order to extract the solvents, to accelerate the finishing process of the textile surface, to increase the penetration of the liquid. impregnation in the textile surface, or to trigger any chemical reactions such as crosslinking or polymerization for example. For this purpose it is possible to bring the impregnated textile surface to a drying means, such as those conventionally used in padding processes for example. In particular, it is possible to use a ventilated drying oven, a device for drying under electromagnetic radiation (infra-red or microwaves), a high-frequency drying device, or a dryer with suspended plies.

The textile surface may, in addition to the impregnation process according to the present invention, undergo one or more subsequent treatments, also called finishing or finishing treatment. These other treatments may be performed before, after and / or during said impregnation process of the invention. Other subsequent treatments that may be mentioned include: printing, calendering, buckling or grilling, desizing or desizing, lamination, coating, assembly with other textile materials or surfaces, washing, blending. degreasing, carbonizing, embossing, blistering, moiring, scraping, crushing, decapping, chlorination, embedding, sanforizing, preforming or fixing.

Textile surfaces, as such or transformed into textile articles, can be used in many applications, such as, for example, in the field of clothing, household goods, building and public works, hygiene articles, interior or exterior textile architecture, such as tarpaulins, tents, stands, and marquees, and the industrial sector. In the latter sector, there may be mentioned filtration, coating media, automobile construction, the food industry, the paper industry, or the mechanical industry.

• un cylindre fixe et creux comportant des orifices sur la surface de contact entre le cylindre et la surface textile ;
• un moyen permettant d'amener la surface textile jusqu'au cylindre ;
• éventuellement un moyen permettant d'accroître la pénétration du liquide d'imprégnation et/ou servant à appliquer uniformément ledit liquide sur la surface textile ; et
• éventuellement un moyen de séchage de la surface textile après ladite imprégnation.

The present invention also relates to a device for implementing the method defined above comprising at least:

• a fixed and hollow cylinder having orifices on the contact surface between the cylinder and the textile surface;
• means for bringing the textile surface to the cylinder;
• optionally means for increasing the penetration of the impregnating liquid and / or for uniformly applying said liquid to the textile surface; and
• optionally means for drying the textile surface after said impregnation.

In the process of the invention, it is obvious that the flow rate of the impregnating liquid and the speed of travel of the textile surface on the perforated cylinder will have to be adapted according to the nature of the impregnating fluid and the quantity to be treated. dispense per unit area. The method of the invention and in particular the adjustment of the flow rate of the impregnation liquid and the speed of movement of the surface The textile on the perforated cylinder can be perfectly controlled and executed by instructions from a computer equipped with appropriate software.

The present invention thus relates to a computer program, for the implementation of the method and / or the device described above, directly loadable in the internal memory of a digital computer comprising at least portions of software code to control the setting the flow rate of the impregnating liquid and the speed of travel of the textile surface on the perforated cylinder, when said program is run on a computer.

A specific language is used in the description so as to facilitate understanding of the principle of the invention. It should nevertheless be understood that no limitation of the scope of the invention is envisaged by the use of this specific language. In particular, modifications, improvements and improvements may be considered by a person familiar with the technical field concerned on the basis of his own general knowledge. The term and / or includes the meanings and, or, as well as all other possible combinations of elements connected to this term.

Other details or advantages of the invention will emerge more clearly in the light of the examples given below solely for information purposes.

EXPERIMENTAL PART Example 1 : Monolayer textile surface

The textile surface used is a polyamide fabric made from a polyamide 6.6 78 dtex / 68 strand thread used in warp and weft. This fabric has a width of 150 cm and a mass per unit area of the order of 100 g / m ² .

• A : mélange de :
  • résine MDT hydroxylée ayant 0,5 % d'OH en poids et constituée de 62 % en poids de motifs CH₃SiO_3/2, 24 % en poids de motifs (CH₃)₂ SiO_2/2 et 14 % en poids de motifs (CH₃)₃ SiO_{1/2 : 47 parties} ; et de
  • résine MQ hydroxylée ayant 2 % d'OH en poids et constituée de 45 % en poids de motifs SiO_4/2 et 55.% en poids de motifs (CH₃)₃ SiO_1/2: 7 parties ;
• B : mélange de :
  • tris(3-(trimethoxysilyl)propyl)isocyanurate : 7 parties
  • zirconate de n-propyle (Pr) de formule Zr(Opr)₄ : 20 parties
  • titanate de n-butyle (Bu) de formule Ti(OBu)₄ : 2 parties ; et de
  • silicate d'éthyle (Et) de formule Si(OEt)₄ : 4 parties ;
• C : mélange de :
  • résine MDT hydroxylée ayant 0,5 % d'OH en poids et constituée de 62 % en poids de motifs CH₃SiO_3/2, 24 % en poids de motifs (CH₃)₂ SiO_2/2 et 14 % en poids de motifs (CH₃)₃ SiO_{1/2: 10 parties} ; et de
  • gomme silicone (motif D) hydroxylée ayant de l'ordre de 0,01 % d'OH en poids et constituée à 100 % en poids de motifs (CH₃)₂ SiO_{2/2 : 20} parties.
• D : Solvant White Spirit : 883 parties.

The treatment applied is a water-repellent treatment based on a crosslinkable liquid silicone formulation. The composition used comprises the following constituents (the parts are given by weight):

• A: mixture of:
  • hydroxylated MDT resin having 0.5% OH by weight and consisting of 62% by weight of CH ₃ SiO _{3/2 units} , 24% by weight of (CH ₃ ) ₂ SiO _{2/2 units} and 14% by weight of patterns (CH ₃ ) ₃ SiO _{1/2: 47 parts} ; and of
  • hydroxylated MQ resin having 2% OH by weight and consisting of 45% by weight of SiO _{4/2 units} and 55% by weight of (CH ₃ ) ₃ SiO _{1/2 units:} 7 parts;
• B: mixture of:
  • tris (3- (trimethoxysilyl) propyl) isocyanurate: 7 parts
  • N-propyl zirconate (Pr) of formula Zr (Opr) ₄ : 20 parts
  • n-butyl titanate (Bu) of formula Ti (OBu) ₄ : 2 parts; and of
  • ethyl silicate (Et) of the formula Si (OEt) ₄ : 4 parts;
• C: mixture of:
  • hydroxylated MDT resin having 0.5% OH by weight and consisting of 62% by weight of CH ₃ SiO _{3/2 units} , 24% by weight of (CH ₃ ) ₂ SiO _{2/2 units} and 14% by weight of patterns (CH ₃ ) ₃ SiO _{1/2: 10 parts} ; and of
  • hydroxylated silicone gum (D-unit) having on the order of 0.01% of OH by weight and consisting of 100% by weight of (CH ₃ ) ₂ SiO _{2/2 units: 20} parts.
• D: White Spirit Solvent: 883 parts.

The composition is re-diluted in solvent (White Spirit) before application, so as to bring its active ingredient content to 5%. Its dynamic viscosity at such a concentration is 4 mPa.s. This type of treatment, intended to crosslink by a polycondensation reaction, is sensitive to exposure to atmospheric moisture. Prolonged exposure to atmospheric moisture will result in the formation of whitish gels and clusters.

By way of comparison, the padding and lamination impregnation techniques have been employed to treat the above-described textile surface with the water-repellent treatment also described above.

The technique that is the subject of the present invention was in turn used with the following parameters: stainless steel 316 stainless steel cylinder, diameter 32 mm, length 1600 mm, mean diameter of the orifices of the perforated cylinder = 0.5 mm and distance between orifices 1 mm (center to center), a ratio L of 1.

The speed of travel of the targeted textile was 5m / min and the wet load rate (weight of solution removed per unit weight of textile) on the targeted textile surface was 80%.

The treatment composition is fed into the tube by means of a conventional peristaltic pump (Type MasterFlex LS) which can be dispensed in the range 1- 3 I / min.

The penetration of the treatment composition into the textile is favored by the use of a small cylinder downstream (part 9 of the Figure 4 ), with a diameter of 30 mm and a length of 1600 mm.

The textile surface then passes into an oven at a temperature of about 150 ° C. The passage time of the order of 2min.

The measurement of the beading effect is carried out by the standard water repellency test known as the "Spray Test" (AATC Test Method 22-1996): This test consists in spraying the sample of the textile article with a given volume of water. The appearance of the sample is then evaluated visually and compared to the standards. A score of 0 to 5 is assigned depending on the amount of water retained. For 0, the sample is totally wet, for 5, the sample is completely dry.

To test the durability of the treatment, an industrial WASHCATOR washing machine (Electrolux) was used for a continuous washing at 50 ° C for varying durations of 8, 16, 24, 32, 40 and 48 hours.

The Spray Test is measured before and after washing.

Table 1 below summarizes the results obtained using the three impregnation techniques:

This table clearly shows that the perforated tube technique provides the best performance of the water repellent treatment.

Example 2 : Multilayer Textile Surface

The textile surface used is a laminated 3-layer complex based on an outer polyamide fabric (100 g / m 2), a hydrophilic polyurethane membrane and a polyester fleece (130 g / m 2). The outer layer of this laminate intended to receive the water-repellent treatment is based on a polyamide 6.6 78 dtex / 68-strand thread used in warp and weft. This fabric has a width of 150 cm and a mass per unit area of the order of 100 g / m ² .

The treatment applied is a water-repellent treatment based on a crosslinkable liquid silicone formulation already described above.

By way of comparison, the lick roll impregnation technique has been employed to treat the textile surface described above with the water-repellent treatment also described above. The padding technique could not be used because, to respect the functionality of the complex (moisture transfer),

the inner layer should not be treated.

The cylinder is the same as that used in Example 1.

The speed of travel of the targeted textile was 5m / min and the wet load rate on the targeted textile surface was 80%.

Table 2 below summarizes the results obtained using the two impregnation techniques:

In this example also, this table clearly shows that the perforated tube technique provides the best performance of the water repellent treatment.

Claims (13)

1. Process for impregnating a textile surface (1), in which the textile surface is brought into contact with at least one fixed, hollow cylinder (5) that dispenses an impregnating liquid by means of orifices, present on the contact surface between the cylinder and the textile surface and the mean diameter of which is between 0.05 and 5 mm and preferentially from 0.1 to 1 mm, so as to impregnate said textile surface (1) on one of its faces, said impregnating liquid comprising a composition based on crosslinkable liquid silicones and having a dynamic viscosity of between 0.1 and 1000 MPa.s.
2. Process according to Claim 1, characterized in that the textile surface (1) is a monolayer or multilayer surface.
3. Process according to Claim 1 or 2, characterized in that said cylinder (5) may have a diameter of between 5 and 200 mm and preferentially between 10 and 100 mm.
4. Process according to any one of Claims 1 to 3, characterized in that said cylinder (5) comprises orifices only in the region of contact with said textile surface.
5. Process according to any one of Claims 1 to 4, characterized in that the orifices are arranged on the contact surface of the cylinder (5), randomly, in one or more parallel lines over the length of the cylinder (5), or in zig zags.
6. Process according to any one of Claims 1 to 5, characterized in that the spacing and positioning of the orifices of the cylinder (5) are such that total impregnation of the textile surface (1) is obtained when it passes over the surface of said cylinder (5), taking into account especially the diffusability of the impregnating liquid on the textile surface (1).
7. Process according to any one of Claims 1 to 6, characterized in that the spacing between the orifices of the cylinder (5) obeys the following relationship: 0.1 ≤ L ≤ 10, and more preferentially 0.5 ≤ L ≤ 2, with L corresponding to the ratio between the total theoretical length of the orifices arranged next to each other over the length of the cylinder (5); and the length of the cylinder (5).
8. Process according to any one of Claims 1 to 7, characterized in that the process comprises a means for bringing the impregnating liquid into the cylinder (5).
9. Process according to any one of Claims 1 to 8, characterized in that the impregnating liquid comprises one or more agents of interest chosen from the group comprising:

   - dyeing agents,

   - bleaching agents,

   - glazing agents,

   - mercerizing agents,

   - impermeabilizing and water-repellent agents,

   - flame retardants,

   - stain removers,

   - antibacterial, antifungal and/or anti-acarian agents,

   - water-repellency agents, and/or

   - softeners.
10. Process according to any one of Claims 1 to 9, characterized in that the impregnating liquid comprises a multi-pack, two-pack or one-pack polyorganosiloxane composition that crosslinks at room temperature or with heat via polyaddition, hydrosilylation, radical or condensation reactions.
11. Process according to any one of Claims 1 to 10, characterized in that it comprises a means for bringing the textile surface (1) into contact with said cylinder (5).
12. Process according to any one of Claims 1 to 11, characterized in that the process comprises at least one means (6, 9) allowing better penetration of the impregnating liquid and/or serving to uniformly apply said liquid onto the textile surface (1), such as a doctor blade or an expressing roll.
13. Process according to any one of Claims 1 to 12, characterized in that the process comprises a means (3) for drying the textile surface (1) after said impregnation, such as a ventilated drying oven, a drying device under electromagnetic radiation, a highfrequency drying device, or a festoon dryer.

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