WO2000056468A1 - Procede et dispositif d'enduction d'un support au moyen d'une composition silicone reticulable - Google Patents
Procede et dispositif d'enduction d'un support au moyen d'une composition silicone reticulable Download PDFInfo
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- WO2000056468A1 WO2000056468A1 PCT/FR2000/000428 FR0000428W WO0056468A1 WO 2000056468 A1 WO2000056468 A1 WO 2000056468A1 FR 0000428 W FR0000428 W FR 0000428W WO 0056468 A1 WO0056468 A1 WO 0056468A1
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- constituents
- coating
- premix
- mixture
- pos
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
- D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
- D21H23/60—Details thereof, e.g. surface characteristics, peripheral speed the material on the applicator roll being subjected to a particular treatment before applying to the paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/34—Applying different liquids or other fluent materials simultaneously
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/001—Release paper
Definitions
- the field of international application No. PCT / FR98 / 00565 is that of silicone compositions crosslinkable by activation, capable of being used in particular for forming a coating or a non-stick film for fibrous support or not, for example paper or the like. , or even in natural or synthetic polymer.
- the invention in a first of these aspects, relates to a process for the continuous coating of a moving support strip (eg paper, fabric, polymer), with a view to imparting anti- adherent, said coating being carried out using a silicone composition based on polyorganosiloxane (POS).
- a moving support strip eg paper, fabric, polymer
- POS polyorganosiloxane
- the non-stick POSs in which we are interested in the context of the invention taken in its first aspect are of the type of those which can be crosslinked quickly ("fast cure”) and at low temperature (“Low Temperature Cure”), by hydrosilylation or by dehydrogenopolycondensation, thermally or by a combination of heat and radiation (UV radiation or electron beam).
- Such silicone compositions which can be crosslinked at low temperature and quickly will be defined by the name: silicone systems LTC / FC.
- the invention also relates to the device involved in the continuous coating process.
- the non-stick silicone compositions concerned comprise at least one POS A, a crosslinking agent B which is a POS and a catalyst. These ternary compositions can only exist temporarily in the non-crosslinked state. Indeed, whatever the crosslinking mechanism concerned: hydrosilylation or dehydrogenopolycondensation, the POS of SiH type brought into contact in the first case of POS of SiVi type and of hydrosilylation catalyst to platinum or brought into presence in the second case of POS type SiOH or SiOR and platinum or retinal condensation catalyst crosslink more or less quickly.
- the crosslinking kinetics depend in particular on the reaction temperature.
- DVB bath lifetimes By DVB is meant the time necessary for doubling the dynamic viscosity measured at 30 ° C.
- the dynamic viscosity can be measured using a BROOKFIELD viscometer according to the indications in the standard
- the crosslinking temperature it is desirable to be able to allow low temperatures (which may be equal to or lower than 110 ° C.), making it possible to coat and to crosslink the coating on supports thermosensitive such as for example polyethylene, polypropylene, PVC and (to a lesser extent) polyethylene glycol terephthalate;
- the crosslinking kinetics it is also desirable to have a process in which the silicone composition can crosslink, even at low temperature, according to a high crosslinking kinetics so as to achieve gains in productivity and profitability;
- the DVB parameter it is still desirable to have a method which authorizes a decrease in the crosslinking temperature, while preserving bath lifetimes, for the non-crosslinked liquid silicone composition, which are of an acceptable level to give manufacturers a sufficient margin for implementing: the silicone coating to industrial rate and scale required.
- the judiciously selected operating parameters are:
- the invention according to international application No. PCT / FR98 / 00565, taken in its first aspect, relates more precisely to a process for continuously coating a moving support strip with a view to imparting properties to it. non-stick, said coating being carried out using a silicone composition comprising: at least one polyorganosiloxane A, at least one crosslinker B crosslinkable by hydrosilylation and / or by dehydrogenopolycondensation and an effective amount of catalyst C, characterized in that '' it consists, essentially:
- the bath homogeneity is such that its signature by differential scanning calorimetry DSC comprises at least a substantially Gaussian peak having, a temperature T1 at the start of the peak, a temperature T2 at the peak, a temperature T3 at the end of the peak, this peak being characterized by: - i - T3 ⁇ 110 ° C,
- ⁇ T ref corresponding to T3ref - T1 ref, obtained from the DSC signature peak of a reference ABC mixture produced according to the Pr protocol defined below in this memo
- the production rate of the homogeneous mixture is between a value corresponding to the rate of consumption of the mixture on the coating site (s) and a value determining the constitution of a buffer reserve, this value of the flow rate being such that the duration separating the bringing together of the components A, B and C and the moment of application of the composition ABC on the moving support strip is less than or equal to the DVB
- the protocol Pr making it possible to establish the reference mixture ABC to arrive at the comparative parameter ⁇ Tref of the DSC peaks of the mixture, consists in mixing the same constituents A, B, C in the same proportions in order to produce in a container, a mixture of 250 cm 3 , with moderate stirring using a propeller stirring rotating at 1000 rpm for at least 15 minutes, at room temperature (25 ° C).
- the buffer reserve if necessary, can be established at the level of the coating member of the moving support strip. This reserve is, for example, between 10 and 30 minutes of consumption of the composition used for coating.
- the invention in question also has a second aspect which consists in a process for the continuous coating of a moving support strip, produced using a silicone composition in which the POSs to which one s' are now particularly interested in those which can be crosslinked at a higher temperature and / or a little slower than the POSs of the LTC / FC silicone systems.
- the present invention aims to satisfy the following objectives.
- the first of these objectives is that of providing a continuous coating process carried out using a silicone composition which does not correspond to a LTC / FC silicone system, and which continues to combine, as explained in the international application.
- PCT / FR98 / 00565 on the one hand a precise dosing procedure (using in particular volumetric dosing means capable of ensuring the supply in metered amount of each of the constituents of the silicone composition) and on the other hand a procedure for homogeneous mixing of the constituents of the silicone composition (using homogeneous mixing means and premixing means (s), these means being dynamic and / or static in nature), with the aim of retaining the advantages of we have spoken above, in particular the considerable improvement in the quality of the silicone coating as well as excellent consistency in the production of quality finished products.
- the first objective to be achieved includes the development of a continuous coating process having the specifications mentioned above and which can advantageously be used for coating a moving strip of flexible support consisting of papers of various types (supercalendered, coated, etc.), cardboard, cellulose sheets, metal sheets, plastic films (polyester, polyethylene, polypropylene, etc.), in order to give it non-stick properties.
- the first objective to be achieved further comprises the development of a continuous coating process having the specifications mentioned above and which can advantageously be used for coating a moving flexible support strip consisting of a textile material, such as for example fibrous, woven, knitted or non-woven supports, with a view to giving it properties in particular of protection and / or mechanical reinforcement, said coating being carried out using a polyaddition silicone composition which has the particularity of belonging to the group of polyaddition silicone elastomer compositions for coating.
- the second essential objective, which the invention aims to satisfy, is to provide a device which can be used in particular for implementing the process of continuously coating a textile material with the aid of a silicone polyaddition elastomer composition.
- the present invention satisfies the above-mentioned objectives, among others, by proposing, in a first object, a process for continuously coating a moving strip of a flexible support, a process offering a considerable improvement in the quality of the coating as well as excellent consistency in the production of finished products having the required quality, said coating being carried out using a silicone composition comprising: at least one polyorganosiloxane
- crosslinker B crosslinkable by hydrosilylation and / or by dehydrogenopolycondensation and an effective amount of catalyst C, characterized in that it consists, essentially:
- T3 - T1 is in the range from 20 ° C to 100 ° C, and preferably from 20 ° C to 80 ° C,
- - iiii - ⁇ T ⁇ T ref ⁇ 10 ° C, and preferably ⁇ T ref ⁇ 8 ° C, and more preferably ⁇ T ref ⁇ 4 ° C,
- the protocol Pr making it possible to establish the reference mixture ABC to arrive at the comparative parameter ⁇ Tref of the DSC peaks of the mixing, consists of mixing the same constituents A, B, C in the same proportions in order to produce in a container, a mixture of 250 cm 3 , with moderate stirring using a propeller stirring rotating at 1000 revolutions / at least 15 min at room temperature (25 ° C).
- the buffer reserve if necessary, can also be established there advantageously at the level of the member for coating the moving support strip.
- the consumption rate for coating depends on the speed of travel of the support strip, the width and the nature of the latter (absorbency), as well as the viscosity of the crosslinkable silicone composition and the importance of the deposit (g / m ⁇ ) desired.
- the dynamic viscosity at 25 ° C of the homogeneous mixture can vary within wide limits, ranging for example from 10 mPa.s and preferably from 100 mPa.s to 200,000 mPa.s or even from advantage in the case of silicone elastomeric polyaddition compositions. Without being limiting:
- - POS A is selected from the group comprising:
- the POSs which have, per molecule, at least two GRa groups, located in the chain and / or at the chain end (s), each consisting of a C 2 -C 10 alkenyl group bonded to silicon, preferably vinyl,
- crosslinker B consists in at least one POS having, per molecule, at least two and, preferably, at least three GRb groups each consisting of a hydrogen atom bonded to silicon, located in the chain and / or chain end (s);
- the GRb: GRa molar ratio should advantageously lie in the range from 0.4 to 10, preferably 1 to 5 and even more preferably 1, 1 to 3 This is the framework within which a person skilled in the art is able to find the appropriate molar proportions in order to comply with the operating parameters of the invention, as defined above and to apply them to the case of compounds A and B crosslinkable by hydrosilylation.
- POS A examples include (dimethyl) polysiloxanes with dimethylvinylsilyl ends, (methylvinyl) polysiloxanes with dimethylvinylsilyl ends, (methylvinyl) (dimethyl) polysiloxanes with trimethylsilyte ends, (methylvinyl) (dimethyl) polysiloxilyl copolymers, dimethylvinyl ends cyclic (methylvinyl) polysiloxanes.
- crosslinker B examples include the (dimethyl) polysiloxanes with dimethylhydrogenosilyl ends, the (methylhydrogeno) polysiloxanes with trimethylsilyl ends, the (dimethyl) (methylhydrogen) polysiloxanes with trimethylsilyl ends, the cyclic (methylhydrogeno) polysiloxanes, (CH3) 2 HSiO 1/2 and SiO 2 units , the resins comprising (CH 3 ) HSiO 2C (D ') units.
- the polyaddition silicone composition bases may comprise only linear POSs or else contain all or part of cyclic and / or branched POSs. According to a variant:
- - POS A is selected from:
- POS A crosslinkable by dehydrogenopolycondensation are the (dimethyl) polysiloxanes with hydroxydimethylsilyl ends or with alkoxydimethylsilyl ends or dialkoxymethylsilyl with alkoxy being methyloxy, ethyloxy or propyloxy.
- the POSs capable of constituting the compounds A and B of the crosslinking systems by dehydrogenopolycondensation may again have a linear, cyclic and / or branched structure.
- a mixture consisting of several polymers which can be used as POS A or POS B differ from each other by the value of the viscosity and / or the nature of the substituents linked to the silicon atoms and / or the type of their structure (linear, cyclic and / or branched).
- catalyst C with respect to the other components A and B, is meant a concentration of C necessary and sufficient to allow crosslinking according to the kinetics required by the methodology according to the invention and to achieve the characteristics of usage, expected in the targeted applications.
- polyaddition catalyst C is preferably chosen from platinum and rodium compounds. It is possible in particular to use the complexes (Karstedt) of platinum and of an organic product described in US patents No. 3,159,601, 3,159,602, 3,220,972 and European patents EP No. 0 057 459, EP 0 188 978 and EP 0 190 530, or else the complexes (Karstedt) of platinum and vinyl organosiloxanes described in US Pat. Nos. 3,419,593, 3,715,334, 3,377,432 and 3,814,730.
- the quantity or the concentration of C is between 2 and 400 ppm of catalyst taken in the metallic state, preferably from 5 to 200 ppm and more preferably still from 10 at 150 ppm, relative to the amounts of components A and B used.
- the catalysts C used in the type of crosslinking by dehydrogenopolycondensation are either platinum-based catalysts such as those mentioned above, or conventional condensation catalysts composed of at least one metal belonging to the tin group, the latter metal being particularly preferred. It can be for example dilaurate, dibutyl tin.
- Catalyst C when it is based on platinum, is used in the proportions indicated above, when it is based on tin, its quantity, expressed in ppm of tin metal relative to the quantities of compounds A and B is between 1000 and 5000 and preferably between 2000 and 4000.
- A, B, C are the basic constituents of the silicone composition specific to the process according to the invention. But in reality, it is preferable to add other ingredients to them, by adopting methodological variants consisting in making premixes of these additional ingredients with the constituents A, B, C.
- ⁇ at least one crosslinking inhibitor D (this is in particular the case when silicone systems crosslinking by hydrosilylation are used),
- step 1 is broken down as follows:
- step 0 of the constituents A, B + possibly D and / or E and / or F;
- At least one inhibitor D is made mandatory in a system where on the one hand the crosslinking between A and B is done at least partly according to a hydrosilylation mechanism and on the other hand there is absence of any organic solvent, such as for example that in which it is possible to dissolve A and / or B to constitute a solution which then represents the form in which A and / or B are used in the process.
- inhibitors D which can be used, preference is given to inhibitors D chosen from the group comprising: ⁇ -acetylenic alcohols, azodicarboxyiates, maleic esters, and mixtures thereof; trimethyl-3,7,11-dodécyne-1ol-3 (TMDDO) and ethynyl-cyclohexanol (ECH) are the preferred inhibitors.
- TMDDO trimethyl-3,7,11-dodécyne-1ol-3
- EH ethynyl-cyclohexanol
- inhibitors D of hydrosilylation reaction which can be used, mention may be made of those described in French patent application No. 2,704,553 relating to long chain ⁇ -acetylenic alcohols. The content of this patent application is also fully incorporated into the present description by reference.
- inhibitors D of the azodicarboxylate type reference is made to European patent application No. 0 184 965 which describes in detail such inhibitors of the polyaddition crosslinking reaction. The content of this patent application is also fully included in the present application by reference.
- inhibitors of the azodicarboxyate type include ethyl azodicarboxylate.
- inhibitors D of the maleic ester type reference is made to French patent application No. 2 456 767 which describes in detail such inhibitors. The content of this patent application is also fully included in the present application by reference.
- inhibitor compounds of this type mention may be made of di-n-butyl maleate, diallyl maleate.
- the concentration of inhibitor (s), when used, is at most equal to 1% by weight, preferably 0.5% by weight, and more preferably still it is in the range from 0.01% at 0.5% by weight, relative to the amount of components A and B.
- another optional compound of the silicone composition namely the adhesion modulator E, it is preferably selected from the group of compounds formed by:
- organic radicals being identical or different and representing C 1 -C 4 -alkyl or cycloalkyl or phenyl groups, at least 80 mol% of the organic radicals representing a methyl group, said resin containing at least 0.1 mol%, preferably from 0.5 to 5 mol% of hydroxyl groups bonded to silicon with a ratio of number of units "M” / number of units "Q” and / or " T “of 0.6-1, the number of possible" D "units being 0.5-10 per 100 moles of resin;
- MQ resins further comprising M V units
- the mixture prepared according to the process of the invention intended for the formation of an anti-adhesive coating may advantageously comprise at least one other constituent F consisting of:
- one of the key elements of the process of the invention is due to the continuous dosing of the constituents of the composition
- metering means in particular volumét ⁇ que capable of ensuring the supply of dosed quantity of each of them as well as, at least partially, their circulation in a continuous flow, throughout the operating chain
- the parameters to be considered also for the premixing and the mixture are the running speed of the support strip, the consumption rate of the composition in coating, the DVB bath life, the feed rates of components A to F at the premix and mixing sites, the flow rates at the premix and mixing outlet, the speed of the premix and mixing flow, the time between bringing C into contact with the constituents necessary for the reaction and depositing the homogeneous mixture on the support strip
- a device which comprises means, in particular for volumetric dosing of the constituents A, B, C, possibly D and / or E and / or F, - means for premixing the constituents other than C,
- thermo means constituted by at least one tunnel oven and / or means by irradiation (UV radiation or electron beam).
- the premixing means comprise at least one upstream premixing chamber and downstream static premixing means
- the homogeneous mixing means comprise at least one upstream mixing chamber and downstream static mixing means
- any system capable of coating in a thin layer can be used; systems for example: “size press”, air gap, Meyer's bar, “direct etching” head, “multicylinder” head.
- the coating member is constituted by a “direct engraving” head (or with an engraved cylinder) or by a “multicylinder” head, organs which are very widespread in the paper industry.
- FIG. 1 represents a block diagram of the preferred embodiment of the device used for the implementation of the method of the invention intended for the formation of a non-stick coating in particular. on paper.
- the latter comprises means 1 for volumetric metering of the constituents AD, A, B and C which are respectively a POS + inhibitor mixture, a POS, a crosslinking agent and a catalyst, for example with platinum or tin depending on whether the systems are of the polyaddition or dehydrogenopolycondensation type.
- the device also includes means 2 for premixing— components other than C, means 3 for homogeneous mixing with component C of the premix produced, a coating member 4, means for conveying 5 the premixture and the mixture. homogeneous of the premixing and mixing sites respectively towards the coating member 4, and the heating means 6 of the moving support strip 7.
- Metering means 1 are, for example, volume counters, that is to say mechanical gear elements, allowing the precise measurement of a product volume.
- Each volume counter 1 is arranged on the one hand between each source of supply of constituents AD, A, B, and the premix means 2, and on the other hand between a supply source of constituent C and the means 3 of homogeneous mixture.
- Each volume meter 1 behaves like a metering pump which takes the appropriate amount of constituent to inject it into the mixing circuit.
- a solenoid valve 8 is provided on the connection connecting each volume meter 1 to the means 2 and 3 for premixing and mixing respectively.
- the latter respectively comprise an upstream premixing chamber 2.1 and upstream mixing chamber 3.1 each connected by a pipe 5 forming the conveying means, to a downstream static premixing chamber 2.2 and to a downstream static mixing chamber 3.2, respectively.
- the upstream 2.1 and downstream 2.2 chambers allow the premixing of the constituents AD, A, B while the upstream 3.1 and downstream 3.2 chambers allow the homogeneous and intimate mixing of the ADAB premix with the catalyst C.
- Each upstream chamber 2.1 and 3.1 is a member: (i) of a static mixture known per se, constituted, for example, by a cylinder comprising toric, coaxial channels, and (2i) for transit of the materials introduced.
- Each channel can be equipped with static mixing paddles. Such a body ensures the first contacting of the products.
- the downstream chambers 2.2 and 3.2 are static mixers of a type known per se consisting of a hollow cylinder, provided inside mixing stators (pallets) and through which the silicone composition ADAB or ADABC is likely to migrate while being brewed and mixed, homogeneously and intimately.
- a solenoid valve 8 is provided on the pipe 5 between the downstream chamber 2.2 and the upstream chamber 3.1.
- the static mixers used in this device are arranged in line in the conveying means 5 (pipe) constituted, for example, by a hose.
- the coating member 4 is a “multi-cylinder” head constituted by two smooth cylinders 9.1 and 9.2 defining the coating head opposite which opens the end of the conveying means 5.
- the cylinders 9.1 and 9.2 are joined together and can be rotated in opposite directions.
- the member 4 also includes a relay cylinder 10 attached to the pair of cylinders 9.1 and 9.2 and ensuring the connection of the latter with a pair of cylinders 11.1 and 11.2, in the air gap of which the support strip 7 circulates to be possibly there. coated with crosslinking ADABC silicone composition.
- This coating member 4 is known per se.
- the end of the means 5 for conveying the intimate mixture is subdivided into two branches
- each of these two supply points is arranged in the vicinity of one end of the injection head 9.1 / 9.2.
- several injection points could be provided arranged along the air gap of the metering cylinders 9.1 and 9.2. These define a buffer reserve of composition intimately and homogeneously mixed ADABC. Thanks to cylinder 10 and the press
- this composition is transferred and applied to the support strip 7, which runs at a given speed in the direction indicated by the arrows on the drawing.
- This strip coated on one side then passes through the heating means 6 which are advantageously a tunnel oven, of the type known in the technical field under consideration.
- the volume meters 1, the solenoid valves 8, the coating member 4, the moving strip 7, and the tunnel oven 6, can be controlled by a central unit of control and calculation, allowing the programming of the operating parameters of dosing, flow rate, consumption rate in reagent bath and crosslinking temperature, among others.
- thermal crosslinking means 6 it could be provided in addition to or in place of the thermal crosslinking means 6, other means for activating the crosslinking, for example actinic irradiation or electron beam.
- At least one of the starting constituents A (which is in this case a POS equipped with reactive groups ethyl ethylenically unsaturated), B and C,
- G1 at least one alkoxylated organosilane containing, per molecule, at least one C 2 -C 6 alkenyl group
- G2 at least one organosilicon compound comprising at least one epoxy radical
- At least one constituent H having the function of increasing the mechanical resistance of the silicone coating chosen from the group formed by: at least one unsaturated polyorganosiloxane resin H1, at least one filler reinforcing mineral H2, at least one hollow organic or mineral microspheric filler H3, or a mixture of 2 or more of these two species together,
- composition according to the process of the invention contains, alongside the constituents A, B and C, the complementary constituents D, G, H and optionally I,
- the silicone compositions defined in this part (III) of the scope of the invention are intended for the coating or coating of woven, knitted or non-woven fibrous supports made of synthetic fibers, advantageously polyester or polyamide fibers. These compositions are intended more particularly for coating or coating at least one of the faces of the flexible support material (such as for example a polyamide fabric) useful for the manufacture by sewing of air bags for the individual protection of occupants of vehicles. , in the event of an impact (called "airbags").
- airbags in the event of an impact
- the method according to the invention proves to be remarkable not only for the coating of supports conventionally used in the manufacture of airbags, but also for the coating for this purpose of supports with open texture.
- support with open texture supports with porosity> 15 l / dm 2 / min according to DIN 53 887.
- the open texture can in particular be defined as corresponding to a number of threads of warp and weft per centimeter whose sum is less than or equal to 36.
- fabrics particularly recommended in the context of the present invention mention will generally be made of fabrics whose weight in the uncoated state is less than 200 g / m 2 and in particular less than or equal to 160 g / m 2 . Mention may thus be made of such fabrics, in particular of polyamide, having from 16 x 16 to 18 x 18 threads / cm, for example fabrics of 470 dtex (decitex) having these characteristics. It will be noted that it will also be possible to use substrates, in particular fabrics, formed from technical textile fibers, that is to say textile fibers having improved properties compared to conventional fibers, for example increased toughness, in order to impart specific or reinforced properties depending on the applications of the support or coated fabric.
- step 1 is broken down as follows:
- step 0 of the constituents A (in whole or in part), B, D, G1, G2, H (in whole or in part) + possibly I (in whole or in part);
- premix e.g. ABDG1G2H, ABDG1G2HI
- step 1bis is broken down as follows:
- premix either premixes (1-1) + (2-1), or premixes (1-2) + (2-2).
- step 1 is broken down as follows:
- step bis breaks down as follows: - 1 'bis / 1 - premix (1 "-1) of the ready-to-use mixture based on the constituents B + D + G1 + G2 + H + possibly I (in whole or in part) with part of the constituent A ;
- steps 1 is made up as follows:
- homogeneous mixture of the premix e.g. ACG3 or ACG3I
- a ready-to-use mixture based on the constituents B + D + G1 + G2 + H + possibly I (in whole or in part).
- step 1 bis breaks down as follows:
- the constituent A of the premix and the component A of the following premix are generally POSs having different viscosities.
- the alkoxyl organosilane G1 of the promoter G is more particularly selected from the products of the following general formula:
- R, R, R are identical or different hydrogenated or hydrocarbon radicals and preferably represent hydrogen, an alkyl linear or branched in C 1 -C 4 or a phenyl optionally substituted by at least one alkyl in C.-O-,
- - U is a linear or branched C 4 alkylene, - C 4 , or a divllent group of formula -CO-O-alkylene- where the alkylene residue is a linear or branched C 4 -C alkyl and the free valence on the right (in bold) is related to Si,
- R and R are identical or different radicals and represent a linear or branched C 4 -C alkyl
- - x 0 to 2, preferably 0 or 1 and more preferably still 0.
- VTMO vinyltrimethoxysilane
- MEMO ⁇ -methacryioxypropyltrimethoxysilane
- organosilicon compound G2 As regards the organosilicon compound G2, it is provided in accordance with the invention to choose it:
- R is a linear or branched C 4 -C 4 alkyl radical
- R is a linear or branched alkyl radical
- y is equal to 0, 1, 2 or 3, preferably to 0 or 1 and, more preferably still to 0,
- ⁇ E and D which are identical or different radicals chosen from linear or branched C 1 -C 4 alkyls, ⁇ z which is equal to 0 or 1, ⁇ R, R, R which are identical or different radicals representing hydrogen or a linear or branched C 1 -C 4 alkyl, hydrogen being more particularly preferred,
- ⁇ R, R, or R can alternately constitute together and with the two carbons carrying the epoxy, an alkyl ring having from 5 to
- L is a monovalent hydrocarbon group, free from any adverse action on the activity of the catalyst and preferably chosen from alkyl groups having from 1 to 8 carbon atoms included, optionally substituted by at least one halogen atom, advantageously, among the methyl, ethyl, propyl and 3,3,3-trifluoropropyl groups and also among the aryl groups and, advantageously, among the xylyl and tolyl and phenyl radicals,
- L has the same meaning as above and r has a value between 0 and 3, for example between 1 and 3.
- the G2 compounds are preferably epoxyalkoxymonosilanes G2a.
- G2a epoxyalkoxymonosilanes
- the preferred products are those in which the metal M is chosen from the following list: Ti,
- titanium is more particularly preferred. It can be associated, for example, with an alkoxy radical of the butoxy type.
- an advantageous combination for forming the adhesion promoter is the following: vinyltrimethoxysilane (VTMO) / 3-glycidoxypropyltrimethoxysilane (GLYMO) / butyl titanate.
- VTMO vinyltrimethoxysilane
- GLYMO 3-glycidoxypropyltrimethoxysilane
- G1, G2 and G3 expressed in percentages by weight compared to the total of the three, are as follows:
- G1> 10 preferably between 15 and 70 and more preferably still between 25 and 65, G2 ⁇ 90, preferably between 70 and 15 and more preferably still between 65 and 25,
- G3> 1 preferably between 5 and 25 and even more preferably between 8 to 18, it being understood that the sum of these proportions in G1, G2, G3 is equal to 100%.
- the weight ratio G2: G1 is preferably between 2: 1 and 0.5: 1, the ratio 1: 1 being more particularly preferred.
- the adhesion promoter is present in an amount of 0.1 to 10%, preferably 0.5 to 5% and more preferably still 1 to 3% by weight relative to all of the constituents of the composition.
- the silicone composition used necessarily includes, in addition, at least one constituent H which can be at least one polyorganosiloxane resin H1 comprising at least one alkenyl residue in its structure, and this resin has a content by weight of alkenyl group (s) between 0.1 and 20% by weight and preferably between 0.2 and 10% by weight.
- constituent H can be at least one polyorganosiloxane resin H1 comprising at least one alkenyl residue in its structure, and this resin has a content by weight of alkenyl group (s) between 0.1 and 20% by weight and preferably between 0.2 and 10% by weight.
- These resins are well known and commercially available branched organopolysiloxane oligomers or polymers. They are in the form of solutions, preferably siloxane. They present, in their structure, at least two different units chosen from those of formula R 3 SiO 1/2 (unit M), R 2 SiO 2 ⁇ (unit D), RsiO ⁇ unit T) and SiO 2 (unit Q), at least one of these units being a T or Q pattern.
- the radicals R are identical or different and are chosen from linear or branched alkyl radicals in C, - C 6 , alkenyl radicals in C 2 - C 4 phenyl, t ⁇ fiuoro-3,3,3 propyl. Mention may be made, for example: as alkyl radicals R, methyl, ethyl, isopropyl, tert-butyl and n-hexyl radicals, and as alkenyl radicals R, vinyl radicals.
- part of the radicals R are alkenyl radicals.
- oligomers or branched organopolysiloxane polymers examples include MQ resins, MDQ resins, TD resins and MDT resins, the alkenyl functions being able to be carried by the M, D and or T units.
- resins which particularly suitable mention may be made of vinyl MDQ resins having a vinyl group content by weight of between 0.2 and 10% by weight.
- This compound H1 has the function of increasing the mechanical resistance of the silicone elastomer coating as well as its adhesion, within the framework of the coating of the faces of a synthetic fabric (for example in polyamide), sewn to form "airbags" .
- This structural resin is advantageously present in a concentration of between 10 and 70% by weight relative to all of the constituents of the composition without taking into account the microspheres, preferably between 30 and 60% by weight and, more preferably still , between 40 and 60% by weight.
- the constituent H having the function of increasing the mechanical resistance of the silicone coating can also be at least one mineral filler of reinforcement H2 and / or at least one microspheric filler H3.
- the aforementioned components H2 and H3 and their possible mixtures are fed, metered and mixed in the form of a dispersion or suspension in a fluid silicone material, which may advantageously consist in the component POS A, added possibly of component H1.
- the mineral filler H2 it can be a BET specific surface silica of at least 50 m 2 / g.
- the charges are advantageously treated by treatment with the various organosilicon compounds usually used for this use.
- these organosilicon compounds can be organochlorosilanes, diorganocyclopolysiioxanes, hexaorganodisiloxanes, hexorganodisilazanes or diorganocyclopolysilazanes (French patents FR-A-1,126,884, FR-A-1,136,885, FR-A-1,236,505, English patent GB-A-1 024 234).
- the filler can also comprise a semi-reinforcing filler or conventional stuffing, for example diatomaceous earth or ground quartz.
- non-siliceous mineral materials can be used as semi-reinforcing or stuffing mineral fillers: carbon black, titanium dioxide, aluminum oxide, hydrated alumina, expanded vermiculite, unexpanded vermiculite, calcium carbonate, zinc oxide, mica, talc, iron oxide, barium sulfate and slaked lime, etc.
- These fillers may be present at a rate of 5 to 30%, preferably 15 to 25% for reinforcing fillers and 5 to 40%, preferably 10 to 30% for semi-reinforcing or tamping fillers, compared to the total composition without the microspheres.
- said filler can advantageously be used in the form of the suspension obtained by treating the filler by applying the method, in accordance with the teaching of the patent application.
- French No. 2,764,894 providing for a two-stage treatment of the charge with a compatibilization agent (chosen for example: with regard to the first treatment period, from a silazane, a hydroxylated siloxane, an amine, an organic acid; and as regards the second treatment time (among a silazane) by operating in the presence of the POS component A.
- a compatibilization agent chosen for example: with regard to the first treatment period, from a silazane, a hydroxylated siloxane, an amine, an organic acid; and as regards the second treatment time (among a silazane) by operating in the presence of the POS component A.
- a neutralizer such as for example a weak acid can be added to the dispersion or a silica filler such as ground quartz.
- this is preferably chosen from expandable organic microspheres comprising a polymer wall containing a liquid or a gas. These microspheres are caused to expand by heating them beyond the softening point of the polymer and to a temperature sufficient to vaporize the liquid or properly expand the gas.
- expandable organic microspheres comprising a polymer wall containing a liquid or a gas.
- These microspheres are caused to expand by heating them beyond the softening point of the polymer and to a temperature sufficient to vaporize the liquid or properly expand the gas.
- which can for example be an alkane such as isobutane and isopentane.
- the wall may consist of polymers or copolymers, for example prepared from vinyl chloride, vinylydene chloride, acrylonitrile, methyl methacrylate or styrene monomers or mixtures of polymers and / or copolymers, for example in particular of acrylonitrile / methacrylonitrile copolymer, acrylonitrile / vinylidene chloride copolymer. See in particular US Patent No. 3,615,972 incorporated herein by reference.
- microspheres may be surface-treated as is known per se, in order to promote the dispersion thereof in the composition, in particular expandable or expanded microspheres having an inorganic coating, for example silica or metal salts or hydroxides such as Ca , Mg, Ba, Fe, Zn, Ni, Mn, as described for example in EP-A-486 080, or also carbonates, for example calcium carbonate.
- an inorganic coating for example silica or metal salts or hydroxides such as Ca , Mg, Ba, Fe, Zn, Ni, Mn, as described for example in EP-A-486 080, or also carbonates, for example calcium carbonate.
- the microspheres Before their expansion, the microspheres will preferably have a diameter between 3 and 50 ⁇ m, more particularly between 5 and 30 ⁇ m.
- a diameter after expansion will also be sought, in particular between 10 and 150, in particular between 20 and 100 ⁇ m.
- the diameter will be of the same order.
- microspheres will be present in particular at a rate of 1 to 30% by weight, preferably from 2 to 10% and more preferably more than 3 or 4%, by weight relative to the total composition.
- the silicone elastomer composition can be added with one or more additives (s) I, such as in particular:
- - 11 at least one polyorganosiloxane qualified as an extender, consisting for example of a (dimethyl) polysiloxane blocked at each of the chain ends by a group (CH 3 ) 2 HSiO ⁇ 2 ; - 12: at least one neutralizer consisting, for example, of a weak acid
- acetic acid e. acetic acid, phosphoric acid optionally in solution in a polyorganosiloxane oligomer
- - 13 one or more dye (s)
- the proportions of POS A and B are such that the ratio of the number of hydrogen atoms bonded to silicon in POS B out of the total number of groups with alkenyl unsaturations of POS A and of resin H1 is between 0.4 and 10, preferably between 1 and 5, and more preferably between 1, 1 and 3.
- the constituents A, B, C, D, G1, G2, G3, H can be used in the form of an emulsion.
- one of the key elements of the coating process is the continuous dosing of the constituents of the composition.
- recourse is also had in a privileged manner to the constituents A, B, C, D, G1, G2, G3, H + possibly I of the composition, in particular volumetric metering means capable of ensuring the supply in metered quantity of each of them as well as, at least partially, their circulation according to a continuous flow, all along the operating chain.
- the inventors have also selected there, in addition to the main parameters of the process mentioned above, other parameters which it is advisable to take into account in order to guarantee that the process proceeds correctly.
- the parameters to be considered also for the premix and the mixture are:
- the present invention proposes, in a second object, a device which can be used in particular for implementing the process of coating a flexible support strip based on a textile material, using '' a polyaddition silicone elastomer composition.
- This device is characterized in that it comprises:. metering means, in particular volumetric, of the constituents A, B, C, D, G1, G2, G3, H + possibly I, .
- these means preferably being thermal means constituted by at least one tunnel oven and / or means by irradiation (UV radiation or electron beam).
- the premixing means (s) comprise at least one upstream premixing chamber and a downstream static premixing chamber
- the homogeneous mixing means comprise at least one upstream mixing chamber and a downstream static mixing chamber.
- any suitable coating system can be used, advantageously, the coating is carried out by doctor blade, and in particular by doctor blade on cylinder, doctor blade in the air and doctor blade on carpet.
- doctor blade and in particular by doctor blade on cylinder, doctor blade in the air and doctor blade on carpet.
- FIG. 2 represents a block diagram of the preferred embodiment of the device used for implementing the method of the invention intended for coating a textile material, in applying the first particular mode of implementation described above.
- the latter comprises means 1 for volumetric metering of the constituents: H1, G1, G2, A (in part), mixture B + D, and mixture A (remaining part) + C + G3, these various constituents having the meanings given above before at the beginning of paragraph (III) of the description of the present invention.
- the device also includes:
- premixing means or site 2 for premixing the constituents H1, G1 and G2 to form the premix PM1 (e.g. HG1G2),
- premix PM2 eg ABD
- - means or site 4 for premixing the premixes PM1 and PM2 to form the premix PM3 eg HG1G2ABD
- PM1 and PM2 premixes sites 2 and 3 of premixes to site 4 of premix,. from the PM3 premix, from the premix site 4 to the homogeneous mixing site 5,. of the homogeneous mixture, from the homogeneous mixing site 5 to the coating member 7,
- Metering means 1 are, for example, volume meters, that is to say mechanical gear elements, allowing the precise measurement of a product volume each volume meter 1 is placed between: - a source of supply of constituents H1, G1, G2, A, mixture B + D, and mixture A + C + G3,
- Each volume meter 1 behaves like a metering pump which takes the appropriate quantity of compounds to inject it into the mixing circuit.
- a solenoid valve 10 is provided on the connection connecting each volume meter 1 to the sites 2, 3 and 5 of premixes and of mixing.
- Each premix site (or means) 2, 3, or 4 comprises an upstream premixing chamber, respectively 2.1, 3.1 or 4.1, connected by a pipe 6 forming the conveying means to a downstream static premixing chamber, respectively 2.2, 3.2 or 4.2.
- the homogeneous mixing site (or means) 5 comprises an upstream mixing chamber 5.1 connected by a pipe 6 to a downstream static mixing chamber 5.2.
- the upstream 2.1 and downstream 2.2 chambers allow the premixing of the constituents H, G1, G2.
- the upstream chambers 3.1 and downstream 3.2 allow the premixing of the constituents A, B + D.
- the upstream chambers 4.1 and downstream 4.2 allow the premixing of the premixes HG1G2 and ABD. Upstream rooms
- Each upstream chamber is a member: (i) of a static mixture known per se, constituted, for example, by a cylinder comprising toric, coaxial and (2i) channels for transit of the materials introduced.
- Each channel can be equipped with static mixing paddles. Such a body ensures the first contacting of the products.
- the downstream chambers are static mixers of a type known per se consisting of a hollow cylinder, provided inside mixing stators (pallets) and through which the silicone composition is capable of migrating while being stirred and mixed. , homogeneously and intimately.
- a solenoid valve 10 is provided on the pipe 6 between the downstream chamber
- the static mixers used in this device are arranged in line in the conveying means 6 (pipeline) constituted, for example, by a hose.
- the coating member 7 consists of a doctor blade in the air, opposite which opens the end of the conveying means 6. It may be provided to arrange the coating member so to define a buffer reserve of composition mixed intimately and homogeneously. Thanks to this member 7, the silicone composition is transferred and applied to the support strip 9 which runs at a given speed in the direction indicated by the arrow in the drawing. This strip coated on one face then passes through the heating means 8 which are advantageously a tunnel oven, of the type known in the technical field under consideration.
- the volume meters 1, the solenoid valves 10, the coating member 7, the moving strip 9, and the tunnel oven 8, can be controlled by a central control and calculation unit, allowing the programming of the operating metering parameters , flow rate, consumption rate in reactive bath and crosslinking temperature, among others.
- EXAMPLE 1 EXAMPLE OF CONTINUOUS COATING OF AN ANTI-ADHERENT COMPOSITION
- the coating member is constituted by a five-cylinder coating head.
- the tunnel oven has the following characteristics: blowing of hot air by nozzle on the coated side in 3 zones of 2 meters long each, with an air flow of 1800 m 3 per hour and per zone.
- - component B it is a poly (dimethyl) (hydrogenorethyl) siloxane oil with trimethylsilyl ends containing 1.05 SiH function per 100 g of oil;
- the device therefore comprises 4 sources of supply of constituents of the composition, namely: mixture AD, POS A, POS B, and catalyst C.
- volume meters 1 assigned to the supply sources AD, A and B on the one hand and the supply source of catalyst C, on the other hand, are adjusted so that the proportions used are as follows:
- AD + B + A C ⁇ 100 parts by weight: 3 parts by weight; i.e. 90.2 ppm Pt compared to A + B.
- volume counters 1 corresponding to AD, A and B are adjusted so that the proportions between these constituents are as follows:
- AD A - »90 parts by weight: 10 parts by weight
- the SiH: SiVinyl molar ratio is equal to 1.25
- the amount of inhibitor D is equal to 0.27% relative to the total mass of A + B.
- the DVB of the mixture is also found to be 20 hours at 30 ° C.
- the device is put into operation and the 5-cylinder coating head is continuously fed for 4 hours with the mixture of products AD, A, B and C.
- the paper coated using this coating member is a paper glassine type.
- the deposit is made at a rate of 1 g / m2. It is cross-linked online by passage through a tunnel oven, at a temperature of the order of 180 ° C., the running speed being 100 m / min.
- the supply of compounds AD, A and B is ensured by the volume meters and / or by a pump, for example pneumatic and / or by providing for pressurization of the reservoirs constituting the supply sources of the various constituents.
- the adjustment of the opening of the solenoid valves 8 is programmed so that the supply of the premix 2 and mixing means 3, is done according to iterative sequences AD / A / B on the one hand and ADAB / C on the other share respectively.
- the programming of the control unit obviously includes the variables or the parameters for adjusting the volume meters and the solenoid valves.
- the characterization of the homogeneous mixture obtained from the constituents AD, A, B, C is carried out by differential thermal analysis DSC using a METLER type TA 4000 device: this analysis provides access to the following values given by the device:
- T1 peak start temperature 94 ° C
- T2 peak temperature 111 ° C
- ⁇ T ⁇ T ref - 1 ° C.
- a bath sample is taken from the coating head to measure its viscosity; a coated paper sample is also taken and brought into contact with TESA ® 4970 adhesive tape (acrylic type) and the adhesion (or release) force is measured according to the FINAT test No. 10 using a INSTRON ® dynamometer with a take-off speed of 0.3 m / min.
- the coating member is constituted by a coating head with a doctor blade in the air.
- Thermal crosslinking is ensured by means of a tunnel furnace with hot air blowing, the operating parameters of which are described below.
- H1 unsaturated polyorganosiloxane resin with structure MM V 'DD V
- G1 vinyltrimethoxysilane (VTMO);
- G2 3-glycidoxypropyltrimethoxysilane (GLYMO);
- component A polydimethylsiloxane oil with dimethylvinylsilyl ends, having a viscosity of 10,000 mPa.s and containing 0.005 SiVi function per 100 g of oil
- POS B is an oil consisting of a poly (dimethyl) (hydrogenethyl) siioxane copolymer with dimethylhydrogenosilyl ends, having a viscosity of 25 mPa.s and containing 0.7 SiH function per 100 g of oil; the inhibitor D is ethynyl-cyclohexanol; the mixture contains 0.3% by weight of inhibitor;
- Catalyst C 0.0215 part by weight of platinum metal in the form of a metal complex known as the Karstedt catalyst
- G3 adhesion promoter 4 parts by weight of butyl orthotitanate.
- the device therefore includes 6 sources of supply of constituents of the composition, namely: H1, G1, G2, POS A, POS B + D mixture, and POS A + C + G3 mixture.
- volume meters 1 assigned to the power sources H1, G1, G2, A, BD on the one hand and ACG3 on the other are adjusted so that the proportions used are as follows:
- volume counters 1 corresponding to H1, G1, G2, A and BD are adjusted so that the proportions between these constituents are as follows:
- A BD ⁇ 63 parts by weight: 5 parts by weight, (H1 + G1 + G2): (A + BD) ⁇ 32 parts by weight: 68 parts by weight.
- SiH Si Vinyl molar ratio is 1.78; the quantity of resin H1 is equal to 27.3% relative to the mass of the composition; the amount of inhibitor D is equal to 0.019% relative to the total mass of A + B; the amount of promoter (G1 + G2 + G3) is equal to 2.2% relative to the mass of the composition.
- Viscosity of the crosslinking composition 20,000 mPa.s
- Mixer output flow 780 g.min-1
- Buffer reserve capacity of the coating unit 3.2 kg; Consumption rate of the crosslinking composition: 47 kg / h;
- the device is put into operation and the coating head scrapes in the air is supplied continuously for almost three hours, with the mixture of products H1, G1, G2, A, BD and ACG3.
- the fabric coated with this crosslinking composition is a polyamide fabric of type 6.6 (polyhexamethyleneadipamide) desized with 470 dtex having 18 x 18 threads / cm.
- the deposit produced is 130 g / m 2 . It is crosslinked online by passing through the tunnel oven, at a temperature of the order of 175 ° C. and a running speed of the textile support of 6 m / min.
- the components H1, G1, G2, A, BD and ACG3 are supplied by volume meters and / or by a pump, for example pneumatic, and / or by providing for the pressurization of the reservoirs constituting the power sources of the various constituents.
- the setting of the operation of the volume meters 1 and of the opening of the solenoid valves 10 is programmed so that the supply of the premix 4 and mixing 5 sites is done according to iterative sequences H1G1G2 / ABD on the one hand and H1G1G2ABD / ACG3 on the other hand.
- the quality of the mixture obtained is assessed visually.
- the performances conferred on the textile support by the silicone coating are in accordance with the standard specifications of technical fabrics.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00906442A EP1165252A1 (fr) | 1999-03-19 | 2000-02-21 | Procede et dispositif d'enduction d'un support au moyen d'une composition silicone reticulable |
AU28116/00A AU774784B2 (en) | 1999-03-19 | 2000-02-21 | Method and device for coating a support using a crosslinkable silicone composition |
CA002368296A CA2368296C (fr) | 1999-03-19 | 2000-02-21 | Procede et dispositif d'enduction d'un support au moyen d'une composition silicone reticulable |
BR0010511-2A BR0010511A (pt) | 1999-03-19 | 2000-02-21 | Processo e dispositivo de recobrimento contìnuo de uma tira móvel de um suporte maleável, composição de silicone reticulável |
US09/952,162 US6805912B2 (en) | 1997-03-21 | 2001-09-14 | Process and device for coating a support using a crosslinkable silicone composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/273,799 | 1999-03-19 | ||
US09/273,799 US6395338B1 (en) | 1999-03-19 | 1999-03-19 | Process and device for coating a support using a crosslinkable silicone composition |
Publications (2)
Publication Number | Publication Date |
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WO2000056468A1 true WO2000056468A1 (fr) | 2000-09-28 |
WO2000056468A9 WO2000056468A9 (fr) | 2001-11-29 |
Family
ID=23045453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2000/000428 WO2000056468A1 (fr) | 1997-03-21 | 2000-02-21 | Procede et dispositif d'enduction d'un support au moyen d'une composition silicone reticulable |
Country Status (7)
Country | Link |
---|---|
US (1) | US6395338B1 (fr) |
EP (1) | EP1165252A1 (fr) |
JP (1) | JP2000273397A (fr) |
AU (1) | AU774784B2 (fr) |
BR (1) | BR0010511A (fr) |
CA (1) | CA2368296C (fr) |
WO (1) | WO2000056468A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003087209A1 (fr) * | 2002-04-18 | 2003-10-23 | Rhodia Chimie | Composition silicone reticulable par deshydrogenocondensation en presence d'un catalyseur metallique |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US6805912B2 (en) * | 1997-03-21 | 2004-10-19 | Jean-Paul Benayoun | Process and device for coating a support using a crosslinkable silicone composition |
FR2843119B1 (fr) * | 2002-07-30 | 2006-10-06 | Rhodia Chimie Sa | Composition d'huiles silicone reticulables en elastomeres pour le traitement par impregnation de materiaux fibreux |
EP2500454B1 (fr) * | 2011-03-16 | 2015-05-13 | Autoliv Development AB | Etoffe pour une utilisation dans la fabrication d'un airbag gonflable |
KR101591168B1 (ko) * | 2013-04-04 | 2016-02-02 | 주식회사 엘지화학 | 경화성 조성물 |
CN105102542B (zh) * | 2013-04-04 | 2017-07-04 | 株式会社Lg化学 | 可固化组合物 |
CN105786052B (zh) | 2014-12-16 | 2020-09-08 | 艺康美国股份有限公司 | 一种用于pH调节的在线控制和反应方法 |
JP6845343B2 (ja) | 2017-02-08 | 2021-03-17 | エルケム・シリコーンズ・ユーエスエイ・コーポレーションElkem Silicones Usa Corp. | 温度管理の改善された二次電池パック |
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GB2051102A (en) * | 1979-06-04 | 1981-01-14 | Toray Silicone Co | Curable organopolysiloxane composition containing microcapsules |
EP0131883A2 (fr) * | 1983-07-13 | 1985-01-23 | Du Pont-Mitsui Polychemicals Co., Ltd. | Procédé pour l'application à un substrat d'une substance multi-composante, liquide, réactive et durcissable |
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WO1998042450A1 (fr) * | 1997-03-21 | 1998-10-01 | Rhodia Chimie | Procede et dispositif d'enduction d'un support en vue de lui conferer des proprietes anti-adherentes, au moyen d'une composition silicone reticulable |
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US5051311A (en) * | 1990-03-01 | 1991-09-24 | Dow Corning Corporation | Silicone corrosion protection coating having extended bath life |
FR2704553B1 (fr) * | 1993-04-30 | 1995-06-09 | Rhone Poulenc Chimie | Alcools alpha-acétyléniques à longue chaîne comme inhibiteurs de réaction d'hydrosilylation, et leur application pour la préparation de compositions silicones durcissables stables. |
FR2719598B1 (fr) * | 1994-05-03 | 1996-07-26 | Rhone Poulenc Chimie | Composition élastomère silicone et ses applications, notamment pour l'enduction de sac gonflable, destiné à la protection d'un occupant de véhicule. |
FR2738830B1 (fr) * | 1995-09-14 | 1997-12-05 | Rhone Poulenc Chimie | Emulsion aqueuse de polyorganosiloxane pour l'enduction de matiere textile |
CN1192109C (zh) * | 1997-03-26 | 2005-03-09 | 帝国学院创新有限公司 | 锚定于细胞膜的抗凝血融合蛋白 |
-
1999
- 1999-03-19 US US09/273,799 patent/US6395338B1/en not_active Expired - Fee Related
-
2000
- 2000-02-21 EP EP00906442A patent/EP1165252A1/fr not_active Withdrawn
- 2000-02-21 BR BR0010511-2A patent/BR0010511A/pt not_active Application Discontinuation
- 2000-02-21 WO PCT/FR2000/000428 patent/WO2000056468A1/fr active Search and Examination
- 2000-02-21 AU AU28116/00A patent/AU774784B2/en not_active Ceased
- 2000-02-21 CA CA002368296A patent/CA2368296C/fr not_active Expired - Fee Related
- 2000-02-29 JP JP2000053285A patent/JP2000273397A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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BE652249A (fr) * | 1964-08-25 | 1964-12-16 | ||
US3928629A (en) * | 1973-06-23 | 1975-12-23 | Dow Corning | Coating process |
GB2051102A (en) * | 1979-06-04 | 1981-01-14 | Toray Silicone Co | Curable organopolysiloxane composition containing microcapsules |
EP0131883A2 (fr) * | 1983-07-13 | 1985-01-23 | Du Pont-Mitsui Polychemicals Co., Ltd. | Procédé pour l'application à un substrat d'une substance multi-composante, liquide, réactive et durcissable |
US4745011A (en) * | 1985-05-17 | 1988-05-17 | Toyota Jidosha Kabushiki Kaisha | Two-component mixing type coating method |
WO1998042450A1 (fr) * | 1997-03-21 | 1998-10-01 | Rhodia Chimie | Procede et dispositif d'enduction d'un support en vue de lui conferer des proprietes anti-adherentes, au moyen d'une composition silicone reticulable |
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WO2003087209A1 (fr) * | 2002-04-18 | 2003-10-23 | Rhodia Chimie | Composition silicone reticulable par deshydrogenocondensation en presence d'un catalyseur metallique |
Also Published As
Publication number | Publication date |
---|---|
US6395338B1 (en) | 2002-05-28 |
AU2811600A (en) | 2000-10-09 |
CA2368296A1 (fr) | 2000-09-28 |
AU774784B2 (en) | 2004-07-08 |
JP2000273397A (ja) | 2000-10-03 |
BR0010511A (pt) | 2002-01-08 |
EP1165252A1 (fr) | 2002-01-02 |
WO2000056468A9 (fr) | 2001-11-29 |
CA2368296C (fr) | 2006-06-27 |
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