WO2006136678A2 - Utilisation d'une composition organopolysiloxanique vulcanisable des la temperature ambiante pour former un elastomere auto adherent - Google Patents
Utilisation d'une composition organopolysiloxanique vulcanisable des la temperature ambiante pour former un elastomere auto adherent Download PDFInfo
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- WO2006136678A2 WO2006136678A2 PCT/FR2006/001342 FR2006001342W WO2006136678A2 WO 2006136678 A2 WO2006136678 A2 WO 2006136678A2 FR 2006001342 W FR2006001342 W FR 2006001342W WO 2006136678 A2 WO2006136678 A2 WO 2006136678A2
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
- C08K5/57—Organo-tin compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
Definitions
- the present invention relates to the use of an organopolysiloxane composition, presented before use in two-component form (RTV-2), which can be vulcanized from room temperature to a self-adhering elastomer on a variety of supports, in particular glass, metals, wood, polycarbonates and plastic materials such as polyvinyl chloride (PVC) and this even in confined atmosphere and after heat treatment. More particularly, the present invention relates to compositions presented before use in the form of 2 components (RTV-2).
- the organopolysiloxane compositions that can be vulcanized at room temperature are well known and are classified into two distinct groups: single-component compositions (RTV-1) and two-component compositions (RTV-2).
- the one-component compositions crosslink when exposed to moisture in the air, i.e. they can not crosslink in a confined environment.
- a solution to this problem is described in the French patent application FR-2603894, which describes an organopolysiloxane elastomer-hardening composition even in a confined atmosphere carrying acyloxy radicals bonded to silicon atoms and containing an accelerating accelerator added before use, chosen from the following hydroxides or oxides: CaO, SrO and BaO.
- these RTV-1 accelerated curing which can crosslink in confined have the disadvantage of poorly adhere to various substrates such as metals, wood, plastics, concrete etc.
- a solution that is currently used to remedy the problem of adhesion consists in implementing a phase of primairization of the support before deposition of RTV-1.
- the usual primers are for example a mixture of alkoxysilanes and resin in organic solution. This step of primarization being rather expensive, a system making it possible to emancipate it is of a great interest.
- the two-component compositions When the two-component compositions, they are marketed and stored in the form of two components, a first component containing the base polymeric materials and the second component containing the catalyst. The two components are mixed during use and the crosslinked mixture in the form of a relatively hard elastomer.
- These two-component compositions are well known and are described in particular in the work of Walter NoII "Chemistry and Technology of Silicones" 1968, 2nd edition on pages 395 to 398.
- compositions essentially comprise 4 different ingredients: an ⁇ , ⁇ -dihydroxydiorganopolysiloxane reactive polymer,
- crosslinking agent generally a silicate or a polysilicate, a tin catalyst, and
- the time of implementation (“pot-life” or “working time”), that is to say the time during which the composition can be used after mixing without hardening, must be long enough, for allow its use but short enough to obtain a moldable object manipulable no later than a few minutes after its manufacture. It is therefore desirable that the catalyst makes it possible to obtain a good compromise between the time of use of the catalyzed mixture and the time after which the molded object is manipulable. In addition, the catalyst must impart to the catalyzed mixture:
- the present invention relates to the use of a vulcanizable organopolysiloxane composition silicone elastomer from room temperature by polycondensation reactions for the preparation of self-adhesive seals and / or adhesives that retain after heat treatment at a temperature> 100 0 C for 3 days a good adhesion: - a stress at break ⁇ 1.2 MPa and - a cohesive fracture facies> 70%.
- the said organopolysiloxane composition comprising:
- a silicone base capable of curing silicone elastomer in the presence of a catalyst by polycondensation reactions comprising: - per 100 parts by weight of at least one ⁇ , ⁇ -dihydroxydiorganopolysiloxane reactive polymer (A),
- the stanno-silicic compounds (D1) is the product of the reaction of at least one organoalkoxysilane corresponding to the following general formula (I):
- the substituents R 2 , R 3 and R 4 each independently represent a saturated or unsaturated, linear or branched aliphatic hydrocarbon group, a carbocyclic group, saturated or unsaturated and / or aromatic, monocyclic or polycyclic; and
- polyalkoxysilane amine compound (D3) has the general formula:
- R 7 represent each, independently of one another, a saturated or unsaturated aliphatic hydrocarbon group
- R 6 represents a functional group of formula: with:
- Z represents a divalent radical derived from a group chosen from: a saturated or unsaturated aliphatic hydrocarbon group, a saturated, unsaturated and / or aromatic, monocyclic or polycyclic carbocyclic group; said divalent radical being optionally substituted or interrupted by at least one oxygen atom and / or at least one nitrogen atom;
- X represents: - a residue - NR 8 R 9 where the substituents R 8 and R 9 , identical or different, each represent a hydrogen atom, a linear or branched, saturated or unsaturated aliphatic hydrocarbon group, optionally substituted by an amino group, a group carbocyclic, saturated or unsaturated and / or aromatic, monocyclic or polycyclic, the substituents R 8 and R 9 may optionally also form together with the nitrogen atom to which they are attached a ring having in the ring 3 to 6 carbon atoms; carbon and 1 or 2 nitrogen atoms; or
- R 10 represents a divalent radical derived from a group chosen from: a saturated or unsaturated aliphatic hydrocarbon group, a saturated, unsaturated and / or aromatic, monocyclic or polycyclic carbocyclic group; and a group having a saturated or unsaturated aliphatic hydrocarbon portion and a saturated, unsaturated and / or aromatic, monocyclic or polycyclic carbocyclic moiety; said divalent radical being optionally substituted or interrupted by at least one oxygen atom and / or at least one nitrogen atom; said polyalkoxysilane amine (D3) possibly being in the form of a hydrocondensate derived from the formula (III).
- the stanno-silicic compound (D1) is prepared according to the following steps: a) is reacted at a temperature> 80 ° C., preferably between 95 ° C. and 140 ° C., at least one organoalkoxysilane (I) according to claim 1 with at least one dialkyltin (II) salt according to
- aliphatic hydrocarbon group is meant a linear or branched group, preferably comprising from 1 to 25 carbon atoms, optionally substituted.
- said aliphatic hydrocarbon group comprises from 1 to 18 carbon atoms, better still from 1 to 8 carbon atoms and better still from 1 to 6 carbon atoms.
- alkyl groups such as the methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, t-butyl, pentyl, isopentyl, neopentyl, 2-methylbutyl and 1-ethylpropyl radicals.
- the unsaturated aliphatic hydrocarbon groups comprise one or more unsaturations, preferably one, two or three unsaturations of the ethylenic (double bond) or / and acetylenic (triple bond) type.
- alkenyl or alkynyl groups derived from the alkyl groups defined above by removal of two or more hydrogen atoms.
- the unsaturated aliphatic hydrocarbon groups comprise a single unsaturation:
- carbocyclic group is understood to mean a monocyclic or polycyclic radical, optionally substituted, preferably C 3 -C 50 .
- it is a C 3 -C 18 radical, preferably mono-, bi- or tricyclic.
- the carbocyclic group comprises more than one ring nucleus (case of polycyclic carbocycles)
- the cyclic rings are condensed in pairs. Two fused rings may be ortho-condensed or pericondensed.
- the carbocyclic group may comprise, unless otherwise indicated, a saturated portion and / or an aromatic moiety and / or an unsaturated moiety.
- saturated carbocyclic groups are cycloalkyl groups.
- the cycloalkyl groups are C 3 -C 18 , more preferably C 5 -C 10 .
- Mention may in particular be made of cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl or norbornyl radicals.
- the unsaturated carbocycle or any unsaturated carbocyclic moiety has one or more ethylenic unsaturations, preferably one, two or three. It advantageously has from 6 to 50 carbon atoms, more preferably from 6 to 20, for example from 6 to 18.
- unsaturated carbocycles are C 6 -C 10 cycloalkenyl groups.
- aromatic carbocyclic radicals are (C 6 -C 16 ) aryl groups, more preferably (C 6 -C 12 ) aryl and especially phenyl, naphthyl, anthryl and phenanthryl.
- a group having both a hydrocarbon aliphatic moiety as defined above and a carbocyclic moiety as defined above is, for example, an arylalkyl group such as benzyl, or an alkylaryl group such as tolyl.
- the substituents of the hydrocarbon aliphatic groups or moieties and carbocyclic groups or moieties are, for example, alkoxy groups in which the alkyl moiety is preferably as defined above.
- the substituents of the organoalkoxysilane of formula (I) and the dialkyltin salt of formula (II) are defined as follows:
- R 0 represents a linear or branched C 1 -C 8 alkyl radical, a C 5 -C 6 cycloalkyl radical or a C 6 -C 18 aryl radical; preferably a methyl, ethyl, propyl, i-propyl, n-butyl, t-butyl, cyclohexyl or phenyl radical;
- - R 1 represents a linear or branched C 1 -C 8 alkyl radical; preferably a methyl, ethyl, propyl, i-propyl, n-butyl or t-butyl radical and even more preferably a methyl or ethyl radical,
- R 2 and R 3 identical or different, each represents an alkyl radical, linear or branched C 1 -C 8 cycloalkyl C 5 -C 0 or an aryl radical of C 6 -C 8; preferably an alkyl radical, linear or branched, C r C 8 , and
- R 4 represents linear or branched C 1 -C 30 alkyl radical, preferably a C 1 -C 20 linear alkyl radical and even more preferentially a methyl radical or an undecane (Cn) radical.
- organoalkoxysilanes of formula (I) are well-known compounds described in particular in French patents FR-1,330,625, FR-2,121,289, FR-2,121,631, FR-2,458,572 and FR-2,121,621.
- silanes of formula: CH 3 Si (OCHs) 3 can be used.
- the organoalkoxysilane of formula (I) is tetraethoxysilane or tetramethoxysilane.
- dialkyl tin salts of formula (II) are well known compounds described in particular in the French patent FR-2,592,657 cited as a reference.
- dialkyl tin salts of formula 1 For example, the dialkyl tin salts of formula
- dialkyll-tin salt of formula (II) is chosen from the group consisting of:
- the stanno-silicic compound (D1) is:
- polyalkoxysilane amine compounds (D3) may be mentioned those of formulas below: [H 2 N (CH 2 ) S] Si (OCH 2 CH 2 CHs) 3
- the catalytic system which has just been described is used to allow or facilitate the curing of silicone elastomers, from room temperature, of bases crosslinkable polyorganosiloxanes by polycondensation reactions in the form of two-component.
- the catalytic system is incorporated in one of the fractions with a crosslinking agent (B) while the other fraction contains a reactive polyorganosiloxane (A) and water.
- the organopolysiloxane composition according to the invention comprises:
- a silicone base capable of curing silicone elastomer in the presence of a catalyst by polycondensation reactions comprising:
- ⁇ , ⁇ -dihydroxydiorganopolysiloxane reactive polymer (A) the organic radicals of which are hydrocarbon radicals preferably chosen from the group consisting of: alkyls having from 1 to 20 carbon atoms; cycloalkyls having 3 to 8 carbon atoms; alkenyls having 2 to 8 carbon atoms and cycloalkenyls having 5 to 8 carbon atoms;
- crosslinking agent (B) chosen from the group consisting of: polyacoxysilanes, products resulting from the partial hydrolysis of a polyalkoxysilane and polyalkoxysiloxanes;
- non-reactive linear polyorganosiloxane polymer (E) consisting of a linear homopolymer or copolymer of which, by molecule, the monovalent organic substituents, identical or different from each other, bonded to the silicon atoms are chosen from alkyl, cyanoalkyl, alkenyl, aryl, alkylarylenes and arylalkylenes radicals,
- auxiliary additives such as plasticizing agents; cross-linking retarders, mineral oils, antimicrobial agents, heat resistance additives such as titanium, iron or cerium oxides, and
- the reactive ⁇ , ⁇ -dihydroxydiorganopolysiloxane polymer (A) that can be used in the silicone bases according to the invention are more particularly those corresponding to the following formula (1):
- substituents R 11 which are identical or different, each represent a substituted or unsubstituted, aliphatic, cyclanic or aromatic, saturated or unsaturated C 1 -C 13 hydrocarbon monovalent radical, and
- n has a value sufficient to give the polyorganosiloxane of formula (1) a dynamic viscosity at 25 ° C ranging from 10 to 1,000,000 mPa.s;
- reactive polyorganosiloxane (A) a mixture consisting of several hydroxylated polyorganosiloxanes which differ from each other by the value of the viscosity and / or the nature of the substituents bonded to the atoms. of silicon.
- the hydroxylated polyorganosiloxanes of formula (1) may optionally comprise T units of formula R 12 SiO 3 Z 2 and / or Q units of formula SiO 4/2 in the proportion of at most 1% (these % expressing the number of T and / or Q units per 100 silicon atoms).
- R 11 and R 12 mentioned above for the reactive polyorganosiloxanes (A) may be chosen from the following radicals:
- alkyl and haloalkyl radicals having 1 to 13 carbon atoms such as the methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, 2-ethylhexyl, octyl, decyl or 3,3,3-trifluoropropyl radicals, 4,4,4-trifluorobutyl, 4,4,4,3,3-pentafluorobutyl,
- cycloalkyl and halogenocycloalkyl radicals having 5 to 13 carbon atoms such as cyclopentyl, cyclohexyl, methylcyclohexyl, propylcyclohexyl, 2,3-difluorocyclobutyl, 3,4-difluoro-5-methylcycloheptyl radicals, alkenyl radicals having 2 to 8 carbon atoms, such as vinyl, allyl or butene-2-yl radicals,
- mononuclear aryl and haloaryl radicals having from 6 to 13 carbon atoms such as the phenyl, tolyl, xylyl, chlorophenyl, dichlorophenyl and trichlorophenyl radicals, and cyanoalkyl radicals whose alkyl members have from 2 to 3 carbon atoms, such as ⁇ -cyanoethyl and ⁇ -cyanopropyl radicals.
- radicals R 11 and R 12 include alkyl radicals having 1 to 8 carbon atoms such as methyl, ethyl, propyl, butyl, hexyl and octyl, vinyl radicals, phenyl radicals.
- substituted R 11 and R 12 radicals include 3,3,3-trilfluoro-propyl, chlorophenyl and betacyanoethyl radicals.
- radicals R 11 and R 12 are methyl radicals, the other radicals being generally phenyl and / or vinyl radicals.
- crosslinking agent (B) mention may be made of:
- the silanes of general formula (2) below (2) in which the symbols R 14 , which may be identical or different, represent alkyl radicals having from 1 to 8 carbon atoms, such as the methyl, ethyl, propyl, butyl, pentyl or 2-ethylhexyl radicals, and oxyalkylene radicals in the form of C 3 -C 6 , the symbol R 13 represents a saturated or unsaturated, linear or branched aliphatic hydrocarbon group, a saturated or unsaturated and / or aromatic, monocyclic or polycyclic carbocyclic group and k is equal to 0 or 1; and
- C 3 -C 6 alkoxyalkylene radicals mention may be made of the following radicals: CH 3 OCH 2 CH (CH 3 ) - CH 3 OCH (CH 3 ) CH 2 -
- R 13 represents a hydrocarbon radical -C 10 including: - alkyl radicals C 1 -C 10 -alkyl such as methyl, ethyl, propyl, butyl, pentyl, 2-ethylhexyl, octyl, decyl,
- crosslinking agents (B) of formula (2) are products accessible on the silicone market; moreover their use in compositions hardening at room temperature is known; it appears in particular in the French patents FR-A-1,126,411, FR-A-1,179,969, FR-A-1,189,216, FR-A-1,198,749, FR-A-1,248,826, FR-A -1,314,649, FR-A-1,423,477, FR-A-1,432,799 and
- alkyltrialkoxysilanes, alkyl silicates and alkyl polysilicates are more particularly preferred, in which the organic radicals are alkyl radicals having from 1 to 4 carbon atoms.
- the alkyl silicates may be chosen from methyl silicate, ethyl silicate, isopropyl silicate, n-propyl silicate and polysilicates chosen from the products of partial hydrolysis of these silicates; they are polymers consisting of a large proportion of units of formula:
- R 14 O 3 SiO 1 Z 2 , R 14 OSiO 3Z 2 , (R 14 O) 2 SiO 2 Z 2 and SiO 4/2 ;
- R 14 represents the methyl, ethyl, isopropyl and / or n-propyl radicals.
- their silica content is usually based on the determination of the hydrolysis product of a sample.
- crosslinking agents (B) which may be used include, in particular, the following silanes:
- crosslinking agent (B) mention may be made of ethyl polysilicate or n-propyl polysilicate. From 0.1 to 60 parts by weight of crosslinking agent of formula (2) is generally used for
- compositions according to the invention may further comprise reinforcing or semi-reinforcing fillers (C) or fillers which are preferably chosen from siliceous fillers.
- the reinforcing fillers are preferably chosen from combustion silicas and precipitated silicas. They have, in general, a specific surface area, measured according to the BET methods, of at least 50 m 2 / g, preferably greater than 70 m 2 / g, an average primary particles less than 0.1 ⁇ m (micrometer) and a bulk density of less than 200 g / liter.
- silicas can be incorporated as such or after being treated with organosilicon compounds usually used for this purpose.
- organosilicon compounds usually used for this purpose.
- these compounds are methylpolysiloxanes such as hexamethyldisiloxane, octamethyldisiloxane, octamethylcyclotetrasiloxane, methylpolysilazanes such as hexamethyldisilazane, hexamethylcyclotrisilazane, chlorosilanes such as dimethylchlorosilane, trimethylchlorosilane, methylvinyldichlorosilane, dimethylvinylchlorosilane, alkoxysilanes such as dimethyldimethoxysilane. dimethylvinylethoxysilane and trimethylmethoxysilane.
- the silicas can increase their starting weight up to a rate of
- the semi-reinforcing or tamping fillers have a particle diameter greater than 0.1 ⁇ m (micrometer) and are selected from ground quartz, calcined clays and diatomaceous earths.
- non-reactive linear polyorganosiloxane polymers may be introduced with the intention of acting on the physical characteristics of the compositions according to the invention and or on the mechanical properties of the elastomers resulting from the hardening of these compositions.
- non-reactive linear polyorganosiloxane polymers (E) are well known; they more particularly include: ⁇ , ⁇ -bis (triorganosiloxy) diorganopolysiloxane polymers with viscosities of at least 10 mPa.s at 25 ° C., formed essentially of diorganosiloxy units and at most 1% of monoorganosiloxy and / or siloxy units , the organic radicals bonded to the silicon atoms being chosen from methyl, vinyl and phenyl radicals, at least 60% of these organic radicals being methyl radicals and 10% at most being vinyl radicals.
- the viscosity of these polymers may reach several tens of millions of mPa.s at 25 ° C .; they therefore include oils with fluid to viscous appearance and hard soft gums. They are prepared according to the usual techniques described more precisely in the French patents FR-A-978 058, FR-A-1 025 150, FR-A-1 108 764, FR-A-1 370 884.
- the ⁇ , ⁇ -bis (thmethylsiloxy) dimethylpolysiloxane oils having a viscosity ranging from 10 mPa.s to 1000 mPa.s at 25 ° C.
- These polymers which act as plasticizers can be introduced in a proportion of at most 70 parts, preferably from 5 to 20 parts, per 100 parts of the ⁇ , ⁇ -dihydroxydiorganopolysiloxane reactive polymers (A).
- compositions according to the invention may also advantageously comprise at least one silicone resin (G).
- These silicone resins are branched organopolysiloxane polymers well known and commercially available. They have, per molecule, at least two different units chosen from those of formula R '" 3 Si0 1/2 (unit M), R 11 ⁇ SiO 2Z2 (unit D), R 111 SiO 3Z2 (T-pattern) and SiO 4/2 (Q-pattern).
- the radicals R 1 "are identical or different and are chosen from linear or branched alkyl radicals, vinyl, phenyl and 3,3,3-trifluoropropyl radicals.
- the alkyl radicals preferably contain from 1 to 6 carbon atoms, inclusive.
- alkyl radicals R of methyl, ethyl, isopropyl, tert-butyl and n-hexyl radicals, these resins preferably being hydroxylated and in this case having a hydroxyl content by weight of between 5 and 500 meq / 100 g.
- resins examples include MQ resins, MDQ resins, TD resins and MDT resins.
- the elastomeric crosslinking of the polyorganosiloxane bases (by polycondensation reaction) which have just been described is carried out under the effect of the catalytic system (D) defined above. These compositions crosslink at room temperature in the presence of water contained in the composition.
- each composition is produced in the form of a two-component system formed of two parts P1 and P2, intended to be brought into contact with one another to produce the elastomer. crosslinked by polycondensation.
- the present invention relates to a precursor two-component system of the organopolysiloxane composition according to the invention characterized in that it is in two distinct parts P1 and P2 intended to be mixed to form said composition , and
- one of these parts comprises the catalytic system (D) as defined above and the agent or the crosslinking agents (B) while the other part is free from the abovementioned species and comprises: 100 parts by weight of the reactive polymer (s) ⁇ , ⁇ -dihydroxydiorganopolysiloxane (s) (A), and
- the two-component precursor system of the organopolysiloxane composition according to the invention is characterized in that:
- the part P1 comprises:
- ⁇ , ⁇ -dihydroxydiorganopolysiloxane reactive polymer (A), the organic radicals of which are hydrocarbon radicals preferably chosen from the group consisting of: alkyls having from 1 to 20 carbon atoms; cycloalkyls having 3 to 8 carbon atoms; alkenyls having 2 to 8 carbon atoms and cycloalkenyls having 5 to 8 carbon atoms;
- non-reactive linear polyorganosiloxane polymer (E) consisting of a linear homopolymer or copolymer of which, by molecule, the monovalent organic substituents, identical or different from each other, bonded to the silicon atoms are chosen from alkyl, cyanoalkyl, alkenyl, aryl, alkylarylenes and arylalkylenes,
- part P2 comprises from 0.1 to 60 parts by weight of at least one crosslinking agent (B) chosen from the group consisting of: polyacoxysilanes, products resulting from the partial hydrolysis of a polyalkoxysilane and polyalkoxysiloxanes;
- B crosslinking agent
- non-reactive linear polyorganosiloxane polymer (E) consisting of a linear homopolymer or copolymer of which, by molecule, the monovalent organic substituents, identical or different from each other, bonded to the silicon atoms are selected from alkyl, cyanoalkyl, alkenyl, aryl, alkylarylenes and arylalkylenes, and
- the two-component compositions according to the invention may be shaped, extruded or in particular molded in various forms, and then cured at room temperature to an elastomer.
- compositions according to the invention can be used for multiple applications such as grouting and / or gluing in the building industry, the transport industry (examples: automotive, aerospace, rail, maritime and aeronautics). assembly of various materials (metals, plastics, natural and synthetic rubbers, wood, cardboard, polycarbonate, earthenware, brick, ceramics, glass, stone, concrete and masonry), insulation of electrical conductors, coating electronic circuits and the preparation of molds for the manufacture of objects of resins or synthetic foams.
- various materials metal, plastics, natural and synthetic rubbers, wood, cardboard, polycarbonate, earthenware, brick, ceramics, glass, stone, concrete and masonry
- insulation of electrical conductors coating electronic circuits and the preparation of molds for the manufacture of objects of resins or synthetic foams.
- in-situ seals used in the automotive industry.
- These "in-situ” seals include several types, namely the “crushed” seals (so-called “seals”), the “shaped” seals (called “section profiles”) and the “injected” seals.
- the "crushed” joints are formed following the application of a pasty bead of the compositions on the contact zone between two metal or plastic elements to be assembled. The pasty cord is first deposited on one of the elements and then the other element is immediately applied to the first; this results in crushing of the bead before it turns into an elastomer.
- This type of seals is intended for assemblies not normally to be dismantled Oil pan seals, timing case seals, etc.).
- compositions according to the invention harden rapidly at room temperature and even in a confined environment, it follows that "shaped" joints (and also other "in-situ” joints) resulting from the hardening of these compositions are self-regulating.
- adhesives and can be manufactured under very demanding industrial manufacturing conditions. They may, for example, be manufactured on the usual assembly lines of the automotive industry equipped with an automatic device for depositing the compositions. This automatic device often has a mixing head and a dispensing nozzle, which moves according to the profile of the joints to be manufactured.
- compositions manufactured and dispensed by means of this apparatus must have a curing time which is well adjusted in order firstly to prevent caking in the mixing head and secondly to obtain complete crosslinking after the end of the removal of the bead. pasty on the pieces to be grouted.
- These "shaped" seals are especially suitable for rocker cover seals, gearbox lids, distribution spacers and even oil seals.
- the injected joints are formed in a confined environment, in cavities often completely closed; the compositions placed in these cavities are rapidly transformed into elastomers. These seals can ensure, for example, the sealing of crankshaft bearings.
- compositions according to the invention are also suitable for the formation of joints and / or glues with fast curing and self-adhering in other areas than the automobile.
- they can be used to glue and grout plastic cabinets, to produce joints and / or glues:
- compositions according to the invention are particularly suitable for the formation of seals in a confined environment and capable of undergoing a heat treatment by the type of application, for example for seals used for bonding elements in household appliances such as cooking ovens. Indeed, in some applications, the seal must withstand temperatures greater than or equal to 100 0 C while maintaining a membership consistent with the needs of the application.
- Another subject of the invention concerns the use of a composition according to the invention or of a two-component system according to the invention for the manufacture of self-adhesive seals and / or adhesives, in particular in the automotive industry or in the automotive industry. field of household appliances.
- the last subject of the invention relates to a self-adhesive gasket and / or a glue prepared by curing at ambient temperature:
- organopolysiloxane composition as defined according to the invention, or
- the invention also relates to the use of a composition according to the invention or a two-component system according to the invention for the manufacture of self-adhesive seals and / or adhesives, in particular in the automotive industry or in the field of plastics. 'home appliance.
- the self-adhesive gasket and / or the adhesive retain a good adhesion after a heat treatment.
- the self-adhesive gasket and / or the adhesive retain after a heat treatment ⁇ 100 ° C. for 3 days a good adhesion, ie:
- the self-adhesive gasket and / or the adhesive retain, after a heat treatment, good mechanical properties, in particular after a heat treatment> at 100 ° C. for 3 days the mechanical properties are as follows: - Shore A hardness after heat treatment> 0.7 x Shore A hardness before heat treatment, and
- the invention also relates to the use of a composition according to the invention or of a two-component system according to the invention for the manufacture of self-adhering seals and / or adhesives having properties of resistance to fluid powertrain useful in particular in the automotive industry.
- the self-adhesive gasket and / or the adhesive according to the invention retain, after aging at 150 ° C. in an oil for 30 days, good mechanical properties.
- a two-component composition comprising the following parts P1 and P2: 1) Part P1:
- a mixture is prepared by mixing the following ingredients:
- DADBE dibutyltin diacetate
- -] _ organoaminosilane compound (D3) of the formula: H 2 N (CH 2 J 2 NH (CH 2) s Si (OCH 3) S
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Silicon Polymers (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008517526A JP4916511B2 (ja) | 2005-06-24 | 2006-06-14 | 室温から加硫して自己粘着性エラストマーを形成するオルガノポリシロキサン組成物の使用 |
| US11/993,732 US20100081751A1 (en) | 2005-06-24 | 2006-06-14 | Use of an Organopolysiloxane Composition Vulcanizable From Room Temperature To Form A Self-Adhesive Elastomer |
| KR1020077030223A KR101168188B1 (ko) | 2005-06-24 | 2006-06-14 | 자가-접착성 엘라스토머를 형성하는, 실온 경화성오르가노폴리실록산 조성물의 용도 |
| EP06778591A EP1899412A2 (fr) | 2005-06-24 | 2006-06-14 | Utilisation d'une composition organopolysiloxanique vulcanisable des la temperature ambiante pour former un elastomere auto adherent |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0506435A FR2887552B1 (fr) | 2005-06-24 | 2005-06-24 | Utilisation d'une composition organopolysiloxanique vulcanisable des la temperature ambiante pour former un elastomere auto adherent |
| FR0506435 | 2005-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2006136678A2 true WO2006136678A2 (fr) | 2006-12-28 |
| WO2006136678A3 WO2006136678A3 (fr) | 2007-02-15 |
Family
ID=35744716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2006/001342 Ceased WO2006136678A2 (fr) | 2005-06-24 | 2006-06-14 | Utilisation d'une composition organopolysiloxanique vulcanisable des la temperature ambiante pour former un elastomere auto adherent |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100081751A1 (fr) |
| EP (1) | EP1899412A2 (fr) |
| JP (1) | JP4916511B2 (fr) |
| KR (1) | KR101168188B1 (fr) |
| CN (1) | CN101287787A (fr) |
| FR (1) | FR2887552B1 (fr) |
| WO (1) | WO2006136678A2 (fr) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011506741A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温において加硫してエラストマーになることができるオルガノポリシロキサン組成物及び新規のオルガノポリシロキサン重縮合触媒 |
| JP2011506742A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーに室温加硫できるオルガノポリシロキサン組成物及び新規オルガノポリシロキサン重縮合触媒 |
| JP2011506738A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーを得るための室温加硫可能なオルガノポリシロキサン組成物および新規なオルガノポリシロキサン重縮合触媒 |
| JP2011506744A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーに室温加硫可能なオルガノポリシロキサン組成物及び新規なオルガノポリシロキサン重縮合触媒 |
| JP2011506743A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温でエラストマーに加硫可能なオルガノポリシロキサン組成物及びオルガノポリシロキサン重縮合のための新規触媒 |
| JP2011506739A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温で加硫してエラストマーを得ることができるオルガノポリシロキサン組成物および新規オルガノポリシロキサン重縮合触媒 |
| JP2011509317A (ja) * | 2007-12-20 | 2011-03-24 | ブルースター・シリコーン・フランス・エスアエス | 室温において加硫してエラストマーになることができるオルガノポリシロキサン組成物及び新規のオルガノポリシロキサン重縮合触媒 |
| JP2011528722A (ja) * | 2008-03-28 | 2011-11-24 | ブルースター・シリコーンズ・フランス | グアニジン構造を有する化合物及びそのオルガノポリシロキサン重縮合触媒としての使用 |
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| DE102010030842A1 (de) * | 2010-07-02 | 2012-01-05 | Wacker Chemie Ag | Lagerstabile Härterzusammensetzung im 2K System |
| GB2482531B (en) * | 2010-08-05 | 2013-11-13 | Loctite R & D Ltd | Adhesive composition with enhanced cure through volume |
| FR3020067A1 (fr) * | 2014-04-18 | 2015-10-23 | Bluestar Silicones France | Procede d'enduction d'un composition silicone sur un support souple |
| CN105505295B (zh) * | 2015-12-25 | 2018-03-09 | 上海创益中空玻璃材料有限公司 | 阻燃型硅酮密封胶及其制备方法 |
| CN107674427A (zh) * | 2017-08-18 | 2018-02-09 | 深圳市利思瑞精密硅胶科技有限公司 | 自粘性硅胶、自粘性硅胶外壳及其制备方法 |
| WO2021133621A1 (fr) * | 2019-12-23 | 2021-07-01 | Dow Silicones Corporation | Compositions durcissables à l'humidité |
| CN115038756B (zh) * | 2020-02-03 | 2024-02-27 | Sika技术股份公司 | 具有可调节的适用期的快速固化双组分有机硅组合物 |
| US20230391960A1 (en) * | 2020-11-17 | 2023-12-07 | Dow Silicones Corporation | Two-part condensation curable silicone compositions and their applications |
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| US2843555A (en) * | 1956-10-01 | 1958-07-15 | Gen Electric | Room temperature curing organopolysiloxane |
| LU35994A1 (fr) * | 1957-07-12 | 1958-06-17 | Rhone Poulenc Sa | Procédé de fabrication d'elastomères à base de diorgano-polysiloxanes et produits ainsi obtenus. |
| DE1964502C3 (de) * | 1969-12-23 | 1973-11-22 | Wacker Chemie Gmbh | Verbesserung der Haftfestigkeit von zu Elastomerer ?rtbaren Organopolysiloxanmassen |
| US3888815A (en) * | 1973-08-20 | 1975-06-10 | Gen Electric | Self-bonding two-package room temperature vulcanizable silicone rubber compositions |
| US4102860A (en) * | 1975-05-30 | 1978-07-25 | Wacker-Chemie Gmbh | Silicon-tin compounds as condensation catalysts in the preparation of organopolysiloxane elastomers |
| DE2737303C3 (de) * | 1977-08-18 | 1980-07-17 | Wacker-Chemie Gmbh, 8000 Muenchen | Unter Ausschluß von Wasser lagerfähige, bei Zutritt von Wasser bei Raumtemperatur zu Elastomeren vernetzende Formmassen |
| US4462936A (en) * | 1980-10-21 | 1984-07-31 | Wacker-Chemie Gmbh | Reaction products of silicic acid esters and organic tin compounds |
| DE3039720A1 (de) * | 1980-10-21 | 1982-05-27 | Wacker-Chemie GmbH, 8000 München | Umsetzungsprodukte von kieselsaeureester mit organischer zinnverbindung und ihre verwendung |
| US4490500A (en) * | 1981-02-26 | 1984-12-25 | General Electric Company | Completely solventless two component RTV silicone composition |
| DE3212008A1 (de) * | 1982-03-31 | 1983-10-06 | Wacker Chemie Gmbh | Unter ausschluss von wasser lagerfaehige, bei zutritt von wasser bei raumtemperatur zu elastomeren vernetzende massen |
| US4562238A (en) * | 1984-06-18 | 1985-12-31 | Shin-Etsu Chemical Co., Ltd. | Room temperature curable silicone rubber composition |
| EP0178751B1 (fr) * | 1984-07-26 | 1988-12-07 | Dow Corning Limited | Elastomères de silicones avec un bon pouvoir adhésif |
| DE3624206C1 (de) * | 1986-07-17 | 1988-02-11 | Wacker Chemie Gmbh | Unter Ausschluss von Wasser lagerfaehige,bei Zutritt von Wasser bei Raumtemperatur zu Elastomeren vernetzende Massen |
| FR2617168B1 (fr) * | 1987-06-25 | 1989-09-15 | Rhone Poulenc Chimie | Catalyseur a l'etain obtenu a partir d'oxyde d'etain et de compose b-dicarbonyle pour composition elastomere silicone |
| DE3808200A1 (de) * | 1988-03-11 | 1989-09-21 | Wacker Chemie Gmbh | Bei raumtemperatur zu anstrichvertraeglichen bis ueberstreichbaren elastomeren vernetzende organopolysiloxanmassen |
| US5300611A (en) * | 1991-10-21 | 1994-04-05 | Shin-Etsu Chemical Co., Ltd. | Room temperature curable organopolysiloxane compositions |
| DE4137698A1 (de) * | 1991-11-15 | 1993-05-19 | Wacker Chemie Gmbh | Zinnverbindung enthaltende massen als eine der beiden komponenten von bei raumtemperatur zu organopolysiloxanelastomeren vernetzenden zweikomponentensystemen |
| US5346940A (en) * | 1993-03-24 | 1994-09-13 | Loctite Corporation | Two-part fast curing RTV silicone for formed-on-part automotive gasket |
| DE69719665T2 (de) * | 1996-11-01 | 2004-02-05 | Kaneka Corp. | Vernetzbares Polymer mit reaktiven, Silicium enthaltenden funktionellen Gruppen |
| DE19757308A1 (de) * | 1997-12-22 | 1999-07-01 | Wacker Chemie Gmbh | Unter Abspaltung von Alkoholen zu Elastomeren vernetzbare Organopolysiloxanmassen |
| WO2000056817A1 (fr) * | 1999-03-24 | 2000-09-28 | Kaneka Corporation | Composition durcissable a deux composants et durcisseur associe |
| JP4209608B2 (ja) * | 2001-11-14 | 2009-01-14 | 信越化学工業株式会社 | 室温硬化性シリコーンゴム組成物 |
-
2005
- 2005-06-24 FR FR0506435A patent/FR2887552B1/fr not_active Expired - Fee Related
-
2006
- 2006-06-14 CN CNA200680025845XA patent/CN101287787A/zh active Pending
- 2006-06-14 JP JP2008517526A patent/JP4916511B2/ja not_active Expired - Fee Related
- 2006-06-14 WO PCT/FR2006/001342 patent/WO2006136678A2/fr not_active Ceased
- 2006-06-14 KR KR1020077030223A patent/KR101168188B1/ko not_active Expired - Fee Related
- 2006-06-14 EP EP06778591A patent/EP1899412A2/fr not_active Withdrawn
- 2006-06-14 US US11/993,732 patent/US20100081751A1/en not_active Abandoned
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011506741A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温において加硫してエラストマーになることができるオルガノポリシロキサン組成物及び新規のオルガノポリシロキサン重縮合触媒 |
| JP2011506742A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーに室温加硫できるオルガノポリシロキサン組成物及び新規オルガノポリシロキサン重縮合触媒 |
| JP2011506738A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーを得るための室温加硫可能なオルガノポリシロキサン組成物および新規なオルガノポリシロキサン重縮合触媒 |
| JP2011506744A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | エラストマーに室温加硫可能なオルガノポリシロキサン組成物及び新規なオルガノポリシロキサン重縮合触媒 |
| JP2011506743A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温でエラストマーに加硫可能なオルガノポリシロキサン組成物及びオルガノポリシロキサン重縮合のための新規触媒 |
| JP2011506739A (ja) * | 2007-12-20 | 2011-03-03 | ブルースター・シリコーン・フランス・エスアエス | 室温で加硫してエラストマーを得ることができるオルガノポリシロキサン組成物および新規オルガノポリシロキサン重縮合触媒 |
| JP2011509317A (ja) * | 2007-12-20 | 2011-03-24 | ブルースター・シリコーン・フランス・エスアエス | 室温において加硫してエラストマーになることができるオルガノポリシロキサン組成物及び新規のオルガノポリシロキサン重縮合触媒 |
| JP2013064147A (ja) * | 2007-12-20 | 2013-04-11 | Bluestar Silicones France | エラストマーを得るための室温加硫可能なオルガノポリシロキサン組成物および新規なオルガノポリシロキサン重縮合触媒 |
| KR101443544B1 (ko) * | 2007-12-20 | 2014-09-22 | 블루스타 실리콘즈 프랑스 에스에이에스 | 탄성중합체로의 실온 가황가능한 오르가노폴리실록산 화합물 및 신규 오르가노폴리실록산 중축합 촉매 |
| JP2011528722A (ja) * | 2008-03-28 | 2011-11-24 | ブルースター・シリコーンズ・フランス | グアニジン構造を有する化合物及びそのオルガノポリシロキサン重縮合触媒としての使用 |
| JP2013064132A (ja) * | 2008-03-28 | 2013-04-11 | Bluestar Silicones France | グアニジン構造を有する化合物及びそのオルガノポリシロキサン重縮合触媒としての使用 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2887552B1 (fr) | 2007-10-12 |
| US20100081751A1 (en) | 2010-04-01 |
| JP2008546882A (ja) | 2008-12-25 |
| WO2006136678A3 (fr) | 2007-02-15 |
| EP1899412A2 (fr) | 2008-03-19 |
| KR101168188B1 (ko) | 2012-07-25 |
| CN101287787A (zh) | 2008-10-15 |
| KR20080021695A (ko) | 2008-03-07 |
| JP4916511B2 (ja) | 2012-04-11 |
| FR2887552A1 (fr) | 2006-12-29 |
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