WO2002038652A2 - Poly(ethynylene phenylene ethynylene silylenes) comprenant un espaceur inerte et leurs procedes de preparation. - Google Patents
Poly(ethynylene phenylene ethynylene silylenes) comprenant un espaceur inerte et leurs procedes de preparation. Download PDFInfo
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- WO2002038652A2 WO2002038652A2 PCT/FR2001/003497 FR0103497W WO0238652A2 WO 2002038652 A2 WO2002038652 A2 WO 2002038652A2 FR 0103497 W FR0103497 W FR 0103497W WO 0238652 A2 WO0238652 A2 WO 0238652A2
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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
- C08G77/60—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 in which all the silicon atoms are connected by linkages other than oxygen atoms
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- the present invention relates to polymers of the poly (ethynylene phenylene ethynylene silylene) type comprising an inert spacer in the main chain of the polymer.
- the invention also relates to processes for the preparation of said polymers and to the hardened products capable of being obtained by heat treatment of said polymers.
- the polymers according to the invention can in particular be used in matrices for composites.
- thermostable plastics that is to say polymers which can withstand high temperatures which can reach for example up to 600 ° C.
- thermostable plastics have increased enormously in recent decades, particularly in the electronic and aerospace fields.
- Such polymers have been developed to remedy the shortcomings of materials previously used in similar applications. Indeed, we know that metals such as iron, titanium and steel are thermally very resistant, but they are heavy. Aluminum is light but not very resistant to heat, ie up to around 300 ° C. Ceramics such as SiC, Si 3 N and silica are lighter than metals and very heat resistant, but they are not moldable. This is the reason why many plastics have been synthesized which are light, moldable and have good mechanical properties; these are mainly carbon-based polymers. Polyimides have the highest heat resistance of all plastics with a thermal deformation temperature of 460 ° C, however these compounds which are listed as being the most stable known at present are very difficult to use.
- polymers such as polybenzimidazoles, polybenzothiazoles and polybenzooxazoles have a heat resistance still higher than that of polyimides but they are not moldable and they are flammable.
- Polymers based on silicon such as silicones or carbosilanes have also been widely studied. The latter, such as poly (sylylene ethynylene) compounds, are generally used as ceramic precursors of the silicon carbide SiC type, resist compounds and conductive materials.
- process (C) makes it possible to obtain polymers without structural defects with good yields and a low mass distribution.
- thermosetting polymers The compounds obtained by this process are perfectly pure and have perfectly characterized thermal properties. These are thermosetting polymers.
- This document also discloses the preparation of the above-mentioned polymers reinforced with glass, carbon or SiC fibers.
- polymers are prepared essentially by the method of scheme (C) and optionally by the process of scheme (B), and they have a weight average molecular weight of 500 to 1,000,000.
- This document also describes cured products based on these polymers and their preparation by heat treatment. It is indicated that the polymers of this document can be used as thermostable polymer, fire-resistant polymer, conductive polymer, material for electroluminescent elements. In fact, it appears that such polymers are essentially used as organic precursors of ceramics.
- the excellent thermal stability of the polymers prepared in particular in document EP-B1-0 617 073 makes them capable of constituting the resin forming the organic matrix of thermostable composite materials. Many techniques for making composites exist.
- the various methods call upon injection techniques (in particular RTM), or compaction techniques of prepregs.
- Prepregs are semi-finished products of small thickness made of fibers impregnated with resin.
- the prepregs which are intended for producing high performance composite structures contain at least 50% fiber by volume.
- the matrix must have a low viscosity to penetrate the reinforcing ply and properly impregnate the fiber in order to avoid its distortion and to preserve its integrity.
- the reinforcing fibers are impregnated either with a resin solution in an appropriate solvent, or with pure resin in the molten state, this is the so-called "hot melt” technique.
- the technology for manufacturing prepregs with a thermoplastic matrix is largely governed by the morphology of the polymers.
- Injection molding is a process which consists in injecting the liquid resin into the textile reinforcement previously positioned in the impression formed by the mold and the counter-mold.
- the most important parameter is the viscosity which must be between 100 and 1000 mPa.s at the injection temperature which is generally 50 to 250 ° C.
- amorphous polymers correspond to macromolecules whose skeletal structure is completely disordered. They are characterized by their glass transition temperature (Tg) corresponding to the transition from the glassy state to the rubbery state. Beyond Tg, thermoplastics are however characterized by a high creep resistance.
- the polymers prepared in document EP-B1-0 617 073 are compounds which are in powder form. The inventors have been able to show, by reproducing the syntheses described in this document, that the polymers prepared would produce glass transition temperatures close to 50 ° C.
- thermosets the prepolymers, prepared in document EP-B1-0 617 073, being thermosets, the crosslinking of these materials is thermally activated.
- the reactions involved in this phenomenon mainly involve two mechanisms, which are described in an article published by ITOH [5].
- the first mechanism is a reaction of
- DIELS ALDER involving an acetylenic bond coupled with an aromatic ring, on the one hand, and another aromatic bond, on the other. This reaction can be illustrated as follows:
- the second mechanism, involved in the crosslinking reaction of poly (ethynylene phenylene ethynylene silylenes) prepolymers is a hydrosilylation reaction, involving the SiH bond and an acetylene triple bond. This reaction can be illustrated as follows:
- the hydrosilylation reaction is activated in the same temperature ranges as the DIELS ALDER reactions.
- a polymer network is, among other things, defined by the crosslinking density and by the length of the chain links which separate two crosslinking points. These characteristics largely govern the mechanical properties of polymers. Thus, highly crosslinked networks and weak links are classified in the range of materials with low deformation capacity. Phenolic resins or cyanate phenolic ester resins belong in particular to this class of materials.
- the crosslinking density can be controlled during the processing of the polymer by suitable heat treatments. Indeed, the crosslinking of the polymer stops, when the mobility of the macromolecular chains is no longer sufficient. It is assumed that this mobility is sufficient, as soon as the processing temperature is higher than the glass transition temperature of the network. Consequently, the glass transition temperature cannot exceed that of processing and the crosslinking density is therefore controlled by the polymer curing temperature.
- sub-crosslinked materials are unstable materials whose use, at temperatures higher than that of the implementation, will cause an evolution of the structure.
- this polymer must have a sufficiently low viscosity so that it can be used, manipulable, "processable” at temperatures for example from 100 to 120 ° C. which are the temperatures commonly used in the techniques of injection or impregnation.
- the object of the invention is to provide polymers which meet inter alia these needs which do not have the defects, drawbacks, limitations and disadvantages of the polymers of the prior art as shown in particular by document EP-B1-0 617,073, and which solve the problems of the prior art.
- the object of the invention is also to provide a process which makes it possible to prepare said polymers.
- inert spacer group generally means a group which does not intervene, which does not react during crosslinking.
- the repeating pattern can be repeated n 3 times.
- the polymer according to the invention comprises at least one repeating unit comprising at least one spacer group which does not intervene in a crosslinking process, to which the polymer according to the invention can be subjected subsequently.
- this fundamental structural characteristic of the polymers according to the invention greatly improves the mechanical properties of the polymers, without significantly modifying their thermal properties which remain excellent. Therefore, the polymer according to the invention, thanks to its specific structure, characterized in particular by the presence of a spacer group provides a solution to the problems of polymers of the prior art.
- the role of the spacer is in particular to constitute a crosslinking internode link sufficiently large to allow movement within the network.
- the function of the at least one spacer group is to space out the triple bonds of the polymer, whether these triple bonds belong to the same repeating unit or to two different, repeating, consecutive units.
- the spacing between two triple bonds or acetylenic functions, provided by the spacer group generally consists of linear molecules and / or of several linked aromatic nuclei, possibly separated by single bonds.
- the spacer group defined above, can be easily chosen by a person skilled in the art.
- the choice of the nature of the spacer group also makes it possible to modulate the mechanical properties of the polymers of the invention, without significantly modifying the thermal properties.
- the spacer group (s) may, for example, be chosen from the groups comprising several aromatic rings linked by at least one covalent bond and / or at least one divalent group, the polysiloxane groups, the polysilane groups, etc. ..
- spacer groups When there are several spacer groups, they are preferably two in number and they can be identical, or chosen from all the possible combinations of two or more of the above groups.
- the repeating pattern of the polymer may thus respond to several formulas.
- the polymer according to the invention may be a polymer comprising a repeating unit of formula (I):
- R represents a halogen atom (such as F, Cl, Br and I), an alkyl group (linear, or branched) having from 1 to 20 carbon atoms, a cycloalkyl group having from 3 to 20 carbon atoms (such as methyl, ethyl, propyl, butyl, cyclohexyl), an alkoxy group having from 1 to 20 carbon atoms (such as methoxy, ethoxy, propoxy), an aryl group having from 6 to 20 carbon atoms (such as a group phenyl), an aryloxy group having 6 to 20 carbon atoms (such as a phenoxy group), an alkenyl group (linear, or branched) having 2 to 20 carbon atoms, a cycloalkenyl group having 3 to 20 atoms carbon (such as vinyl, allyl, cyclohexenyl
- R represents a halogen atom (such as F, Cl, Br and I), an alkyl group
- R 2 , R 3 and R 4 may be replaced by halogen atoms, alkyl groups, alkoxy groups, ar groups, groups aryloxy, amino groups, disubstituted amino groups or silanyl groups, examples of these groups have already been cited above for R, n is an integer from 1 to 4, and n x is an integer from 1 to 10, preferably from 1 to 4, this repeating pattern is generally repeated
- polymer according to the invention could be a polymer comprising a repeating unit of formula:
- phenylene group may be in the form o, m or p and R, Ri, R 3 and n have the meaning already given above and n 2 is an integer from 2 to 10.
- This repeating pattern is generally repeated n 3 times, with n 3 being an integer, for example from 2 to 100.
- polymer according to the invention could be a polymer comprising a repeating unit of formula:
- Ri and R 3 have the meaning already given above, and R 'represents a group comprising at least two aromatic rings comprising, for example from 6 to 20 C, linked by at least one covalent bond and / or at least one divalent group, this repeating motif is generally repeated n 2 times, with n 2 , as defined above.
- polymer according to the invention could be a polymer comprising a repeating unit of formula:
- this repeating pattern can likewise be repeated n 3 times.
- polymer according to the invention may be a polymer comprising a repeating unit of formula:
- R ′ represents a group comprising at least two aromatic rings separated by at least one covalent bond and / or a divalent group.
- the group R ′ can, for example, be chosen from the following groups:
- X represents a hydrogen atom or a halogen atom (F, Cl, Br, or I).
- the polymer according to the invention may comprise several different repeating units, comprising at least one inert spacer group.
- Said repeating units are preferably chosen from the repeating units of formulas (I), (II), (III), (IV) and (V), already described above. Said repeating patterns are repeated respectively x x , x 2 , x 3 , x 4 and x 5 times, where Xi, x 2 , x 3 , x 4 and x 5 generally represent whole numbers from 0 to 100,000, provided that that at least two of xi, x 2 , x 3 , x and x 5 are different from 0.
- This polymer can optionally comprise, in addition, one or more repeating units not comprising an inert spacer group, such as a unit of formula (Va):
- This pattern is generally repeated x 6 times, with ⁇ representing an integer from 0 to 100,000.
- a preferred polymer corresponds, for example, to the formula:
- xi, x 2 , x 3 , x 6 are as defined above, provided that two of x x , x 2 and x 3 are different from 0.
- the polymers according to the invention comprise, at the end of the chain, (terminal) groups (Y) originating from a chain limiting agent, which makes it possible to control, to modulate their length, their molecular mass, and therefore their viscosity.
- the polymers according to the invention are distinguished, in particular, fundamentally due to the presence of at least one spacer group in the repeating unit.
- the polymers of the present invention are distinguished due to the presence at the chain end of groups Y derived from a chain-limiting agent.
- the mechanical properties such as the deformation capacity or the breaking stress, are greatly improved by the presence of the spacer group or groups.
- the presence at the chain end of a chain limiting group has precisely the effect that the polymer of the invention has a determined length and therefore a molecular weight, perfectly defined.
- the polymer according to the invention also advantageously has perfectly defined and modular rheological properties.
- Y depends on the nature of the chain limiting agent from which it is derived, Y may represent a group of formula:
- R has the same meaning as R and can be the same or different from the latter
- n 1 has the same meaning as n and can be the same or different from the latter.
- Y could also represent a group of formula (XII):
- the molecular weight of the polymers according to the invention is - because they comprise a chain limiter group - perfectly defined, and the length of the polymer and therefore its molecular weight can be easily controlled by metered additions of chain limiter in the reaction mixture reflected by varying proportions of the Y chain limiting group in the polymer.
- the molar ratio of the Y groups, chain limiters, at the end of the chain to repeating units of the ethynylene phenylene ethynylene silylene type is generally 0.01 to 1.5. Preferably, this ratio is 0.25 to 1.
- the molar proportion of groups Y, chain limiters, at the end of the chain is generally from 1 to 60 and preferably from 20 to 50% of the polymer according to the invention.
- the number average molecular weight of the polymers according to the invention is generally from 400 to 1,000,000, and the weight average molecular weight is 500 to 1,000,000.
- the number average molecular weight of the polymers according to the invention is, because they comprise a perfectly defined chain limiting group, and is generally from 400 to 5000 and the weight average molecular weight is from 600 to 10 000.
- the control of the molecular weight of the polymers which generally lies in the aforementioned range makes it possible to perfectly control the viscosity of the polymers.
- the viscosities of the polymers according to the invention are within a range of values of
- the viscosity is also linked to the glass transition temperature (Tg).
- Tg glass transition temperature
- the glass transition temperature of the polymers according to the invention will therefore generally be from -250 to + 10 ° C., which is much lower than the glass transition temperature of the polymers of the prior art.
- the invention also relates to a first process for the preparation of a polymer, according to the invention, preferably of determined molecular mass carrying, at the end of the chain groups derived from a chain-limiting agent, said polymer responding in particular to the formula (I), (II), (III), (IV) or (V), given above.
- phenylene group in which the phenylene group (formula (XIII)) may be in the form o, m or p, and R, R 'and n have the meaning indicated above, and Xi represents a halogen atom such as Cl, Br , F, or I (preferably X x is Cl), mixed with a chain-limiting agent, for example of the formula:
- Y is a group chosen from the groups of formula:
- R "' has the same meaning as R and can be the same or different from the latter, and n' has the same meaning as n and can be the same or different from the latter; with a dihalide (dihalosilane or dihalosiloxane) of formula (XVII) (a, b, or c):
- R x , R 2 , R 3 and R 4 are identical or different, Xi, n x and n 2 have the meaning already indicated above, Xi preferably being Cl, in the presence of an aprotic solvent, then a step hydrolysis to give the final polymer, respectively of formula (I), (II), (III), (IV), (V).
- the invention also relates to a second process for the preparation of a type polymer of poly (ethynylene phenylene ethynylene silylene), preferably of determined molecular mass, bearing at the chain end groups, derived from a chain-limiting agent, said polymer corresponding to the formula (I), (II), (III), (IV), (V), given above.
- R ''' has the same meaning as R and can be the same or different from the latter
- n' has the same meaning as n and can be the same or different from the latter with a compound of formula (XXI) (a , goat) :
- the polymers of respective formulas (I), (II), (III), (IV) or (II) are obtained respectively by reaction of (XVIII) and (XXIa); (XVIII) and (XXIb); (XIX) and respectively (XIXc), (XIXa) and (XlXb).
- the control of the masses of the polymers, according to the invention is obtained by adding to the reaction medium a reactive species also called chain-limiting agent which blocks the polymerization reaction without affecting the overall yield of the reaction.
- This reactive species is generally an analogue of one of the main reactants, but which has only one function allowing coupling. When this species is introduced into the polymer chain, growth is stopped.
- chain limiter By making metered additions of chain limiter, it is possible, according to the invention, to easily control the length of the polymer and consequently its viscosity.
- the length of the polymer and therefore its molecular weight, and consequently, its viscosity are in direct correlation with molar percentage of chain-limiting agent.
- This molar percentage is defined by the mole ratio of the agent chain limiter on the total of moles of chain limiting agent and of diacetylene compounds of formula (XIII), or (XIV), or (XVII) or (XIX) x 100. This percentage can range from 1 to 60%, preferably 20 to 50%.
- the molecular mass is linked to the degree of activation of the catalyst [4].
- this is highly hygroscopic, it is very difficult to predict the molecular masses a priori. The less the catalyst is activated and the lower the masses, but this drop is accompanied by a significant drop in the yield of the polymerization reaction.
- the distribution can be so wide that several mass fractions different can be isolated by selective fractionation.
- the first method of preparation of the invention makes it possible to dispense with a step in the process of EP-B1-0 617 073 which involves a monohalogenated silylated compound, which induces shorter reaction times as well as substantial savings in reagents.
- the invention also relates to the cured product capable of being obtained by heat treatment at a temperature of 50 to 700 ° C. of the polymer described above.
- this hardened product generally has a number average molecular weight of 400 to 5,000 and a weight average molecular weight of 600 to 10,000.
- the invention also relates to a composite matrix comprising the polymer described above.
- the first process for the preparation of a typical polymer of poly (ethynylene phenylene ethynylene silylene), according to the invention is substantially similar to that described in the document.
- EP-B1-0 617 073 differs therefrom by the incorporation into the mixture of a chain-limiting agent, by the final treatment of the polymers and possibly by the molar ratio of the organomagnesium reactants. and dichlorosilane. We can therefore, relative to the conditions of this process, refer to this document EP-B1-0 617 073 which is incorporated herein by reference.
- GRIGNARD reagents of formula (XIII) used in the first preparation process, according to the invention are in particular those described in document EP-B1-0 617 073 on pages 5 to 7 (Formulas (3) and ( 8) to (20).
- GRIGNARD reagents of formula (XIV) are, for example, chosen from the compounds obtained from formulas (VI) to (X).
- the chain limiting agent of formula (XV) may be a monoacetylene organomagnesium compound of formula:
- R "', Xi and n' have already been defined above.
- Examples of the monoacetylene compounds from which the monoacetylene organomagnesiums (XV) are derived are the following: phenylacetylene, 4-ethynyltoluene 4-ethynylbiphenyl, 1-ethynyl 4-methoxybenzene.
- the GRIGNARD reagent (XIII) or (XIV), in mixture with the chain-limiting compound corresponding to the above formula is reacted with a dihalosilane, reproduced in one of the general formulas (XVIIa) to (XVIIc) .
- dihalosilanes for example, those of formula (XVIIb)
- EP-B1-0 617 093 and respond in particular to formulas (21) to (26) given in this document.
- the conditions of the polymerization reaction such as the solvent, the duration of the reaction, the temperature, etc. (excluding "post-treatment") are substantially the same as those described in document EP-B1-0 617 073 to which reference is made in particular on page 14.
- the ratio of the number of acetylenic functions to the number of halogen functions carried by the silane must be as close as possible to 1, and preferably 0.9 to 1.1.
- the molar ratio of phenylacetylene to diethynylbenzene is preferably between 0.01 and 1.5 and ideally between 0.25 and 1 (percentage from 1 to 60%).
- a step is therefore dispensed with from the analogous process of 1 prior art in particular in the case where the chain limiter is an organomagnesium.
- a post-treatment of the already prepared polymer, the molecular mass of which is fixed is carried out with a monohalosilane and then hydrolysis.
- the monohalosilane does not play the role of chain limiter since it is not, on the contrary, of the present invention included in the starting reaction mixture and that its action has no influence on the molecular weight of the polymer.
- the polymer is hydrolyzed by a volume for example of 0.1 to 50 ml per gram of polymer of an acid solution, for example approximately 0.01 to 10 N of hydrochloric acid or d 'sulfuric acid.
- the ideal solvent is tetrahydrofuran.
- the reaction mixture is then decanted and the solvent of the organic phase is substituted with a volume for example of 0.1 to 100 ml per gram of polymer and ideally of 1 to 10 ml per gram of polymer for any type of solvent immiscible with water, such as xylene, toluene, benzene, chloroform, dichloromethane or alkane with more than 5 carbons.
- this step can be omitted.
- the organic phase is then washed for example from 1 to 5 times and preferably 2 to 3 times with a volume of water, for example from 0.1 to 100 ml per gram of polymer and ideally from 1 to 10 ml per gram of polymer , so as to neutralize the organic phase and extract from it all the impurities such as magnesium and halogen salts.
- the pH of the organic phase must be preferably between 5 and 8 and ideally between 6.5 and 7.5.
- the polymer is dried under a vacuum of between 0.1 and 500 mbar at a temperature between 20 and 150 ° C for a time between 15 minutes and 24 hours.
- the second process for preparing the polymers according to the invention is a process using dehydrogenation in the presence of a basic metal oxide. Such a process differs essentially from the analogous process described in documents [1] and [4] as well as in document EP-B1-0 617 073 only in that a chain limiting agent is added to the reaction mixture.
- the reaction mixture comprises a compound of formula (XVIII) 'for example: 1,3-diethylnylbenzene or (XIX), and a chain-limiting agent which in this second process is a monoacetylene (XX) analogous to that already described above for the first process.
- the compound (XVIII), or (XIX) in mixture with the chain-limiting agent reacts with a dihydrosilane of formula (XXIa) to (XXIc).
- the basic metal oxide used is preferably chosen from alkali metal, alkaline earth metal oxides, lanthanide oxides, scandium, yttrium, thorium, titanium, zirconium, hafnium, copper, zinc, cadmium oxides and their mixtures. .
- the cured products prepared by heat treatment of the polymers according to the invention are for example produced by melting this polymer or by dissolving it in a suitable solvent, then optionally putting it in the desired form and heating it in a gaseous atmosphere. air, nitrogen or inert gas such as argon or helium.
- the temperature of the treatment generally ranges from 50 to 700 ° C, preferably from 100 to 400 ° C and more preferably from 150 to 350 ° C, and the heating is generally carried out for a period of one minute to 100 hours.
- the curing reaction can optionally be carried out in the presence of a curing agent and the polymer according to the invention can also be mixed with other resins or polymers.
- organic matrix composites comprising the polymer of the invention can be done by numerous techniques. Each user adapts it to their constraints. The principle is generally always the same: namely, coating of a textile reinforcement with the resin, then crosslinking by heat treatment comprising a rate of temperature rise of a few degrees / minute, then a plateau close to the crosslinking temperature.
- 1,3-dichlorotetramethyldisiloxane dissolved in 100 ml of anhydrous THF are then introduced dropwise under reflux.
- the solution is then left under stirring and reflux for one hour.
- 26.8 g (247 mmol) of trimethylchlorosilane are then added and left under reflux for 30 minutes.
- the polymer thus formed is then hydrolyzed by adding 50 ml of hydrochloric acid at 35% by mass in solution in 100 ml of water.
- the reaction medium is separated into two fractions, one aqueous, the other organic. The . the aqueous phase then undergoes a change of solvent, the THF being replaced by 200 ml of chloroform.
- the polymer in solution in chloroform is then washed three times with 100 ml of water.
- the organic solution is then dehydrated by passage over a bed of magnesium sulfate.
- the polymer is then obtained by evaporation of the solvent.
- the polymer is finally purified by drying under 0.4 mbar at 20 ° C. 22 g (80% yield) of polymer are thus obtained, which is in the form of a yellow oil.
- the number average molecular mass of this compound is 962 for a mass average mass of 1,535 (polydispersity of 1.6). These masses were determined by GPC from a polystyrene calibration.
- the viscosity of this polymer is 600 mPa.s at 100 ° C and 160 mPa.s at 120 and 100 mPa.s at 140 ° C.
- a mixture of 10.7 g (52.75 mmol) of 1,3-dichlorotetramethyldisiloxane and 6.07 g (52.75 mmol) of methyldichlorosilane dissolved in 100 ml of anhydrous THF are then introduced dropwise under reflux.
- the solution is then left under agitation and reflux for one hour.
- 26.8 g (247 mmol) of trimethylchlorosilane are then added and left under reflux for 30 minutes.
- the polymer thus formed is then hydrolyzed by adding 50 ml of hydrochloric acid at 35% by mass in solution in 100 ml of water.
- the reaction medium is separated into two fractions, one aqueous, the other organic.
- the aqueous phase then undergoes a change of solvent, the THF being replaced by 200 ml of chloroform.
- the polymer in solution in chloroform is then washed three times with 100 ml of water.
- the organic solution is then dehydrated by passage over a bed of magnesium sulfate.
- the polymer is then obtained by evaporation of the solvent.
- the polymer is finally purified by drying under 0.4 mbar at 20 ° C. 20 g (80% yield) of polymer are thus obtained, which is in the form of a yellow oil.
- the number average molecular mass of this compound is 1,065 for a mass average mass of 1,705 (polydispersity of 1.6). These masses were determined by GPC from a polystyrene calibration.
Abstract
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JP2002541979A JP2004514004A (ja) | 2000-11-10 | 2001-11-09 | 不活性スペーサーを含むポリ(エチニレンフェニレンエチニレンシリレン)およびその調製方法 |
EP01993642A EP1355973A2 (fr) | 2000-11-10 | 2001-11-09 | Poly(ethynylene phenylene ethynylene silylenes) comprenant un espaceur inerte et leurs procedes de preparation. |
CA002428083A CA2428083A1 (fr) | 2000-11-10 | 2001-11-09 | Poly(ethynylene phenylene ethynylene silylenes) comprenant un espaceur inerte et leurs procedes de preparation. |
US10/415,644 US6919403B2 (en) | 2000-11-10 | 2001-11-09 | Poly(ethylene phenylene ethynylene silylenes) comprising an inert spacer and methods for preparing same |
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FR0014459 | 2000-11-10 | ||
FR0014459A FR2816624B1 (fr) | 2000-11-10 | 2000-11-10 | Poly (ethynylene phenylene ethynylene silylenes) comprenant un espaceur inerte et leurs procedes de preparation |
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US (1) | US6919403B2 (fr) |
EP (1) | EP1355973A2 (fr) |
JP (1) | JP2004514004A (fr) |
CA (1) | CA2428083A1 (fr) |
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FR2816623B1 (fr) * | 2000-11-10 | 2002-12-20 | Commissariat Energie Atomique | Poly (ethynylene phenylene ethynylene polysiloxene (silylene)) et leurs procedes de preparation |
FR2836922B1 (fr) * | 2002-03-08 | 2004-05-21 | Commissariat Energie Atomique | Compositions de poly(ethynylene phenylene ethynylene silylenes) |
JP3918933B2 (ja) * | 2002-12-06 | 2007-05-23 | Jsr株式会社 | 化学機械研磨ストッパー、その製造方法および化学機械研磨方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5243060A (en) * | 1992-04-10 | 1993-09-07 | Iowa State University Research Foundation, Inc. | Silylene-diethynyl-arylene polymers having liquid crystalline properties |
EP0617073A2 (fr) * | 1993-03-24 | 1994-09-28 | MITSUI TOATSU CHEMICALS, Inc. | Polymères ayant des groupes silylèneéthynylène et des groupes phénylèneéthynylène, procédé pour leur préparation et produits durcis. |
FR2798662A1 (fr) * | 1999-09-16 | 2001-03-23 | Commissariat Energie Atomique | Poly (ethynylene phenylene ethynylene silylenes) et leurs procedes de preparation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH07126394A (ja) * | 1993-09-13 | 1995-05-16 | Sekisui Chem Co Ltd | ケイ素系重合体及びその製造方法 |
JPH10110037A (ja) * | 1996-10-07 | 1998-04-28 | Sekisui Chem Co Ltd | ケイ素系重合体、その製造方法及びその硬化物 |
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2000
- 2000-11-10 FR FR0014459A patent/FR2816624B1/fr not_active Expired - Lifetime
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2001
- 2001-11-09 WO PCT/FR2001/003497 patent/WO2002038652A2/fr not_active Application Discontinuation
- 2001-11-09 JP JP2002541979A patent/JP2004514004A/ja active Pending
- 2001-11-09 EP EP01993642A patent/EP1355973A2/fr not_active Withdrawn
- 2001-11-09 CA CA002428083A patent/CA2428083A1/fr not_active Abandoned
- 2001-11-09 US US10/415,644 patent/US6919403B2/en not_active Expired - Fee Related
Patent Citations (3)
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US5243060A (en) * | 1992-04-10 | 1993-09-07 | Iowa State University Research Foundation, Inc. | Silylene-diethynyl-arylene polymers having liquid crystalline properties |
EP0617073A2 (fr) * | 1993-03-24 | 1994-09-28 | MITSUI TOATSU CHEMICALS, Inc. | Polymères ayant des groupes silylèneéthynylène et des groupes phénylèneéthynylène, procédé pour leur préparation et produits durcis. |
FR2798662A1 (fr) * | 1999-09-16 | 2001-03-23 | Commissariat Energie Atomique | Poly (ethynylene phenylene ethynylene silylenes) et leurs procedes de preparation |
Non-Patent Citations (4)
Title |
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CORRIU R J P ET AL: "SYNTHESIS OF POLY (ALKYNYLSILANES) HAVING VARIOUS AROMATIC GROUPS IN THE BACKBONE" JOURNAL OF POLYMER SCIENCE, POLYMER LETTERS EDITION,US,JOHN WILEY AND SONS. NEW YORK, vol. 28, no. 13, 1 décembre 1990 (1990-12-01), pages 431-437, XP000175787 * |
ITOH M ET AL: "NEW HIGHLY HEAT-RESISTANT POLYMERS CONTAINING SILICON: POLY (SILYLENEETHYNYLENEPHENYLENEETHYNYLENE)S" MACROMOLECULES,US,AMERICAN CHEMICAL SOCIETY. EASTON, vol. 30, no. 4, 24 février 1997 (1997-02-24), pages 694-701, XP000680700 ISSN: 0024-9297 * |
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 08, 29 septembre 1995 (1995-09-29) & JP 07 126394 A (SEKISUI CHEM CO LTD), 16 mai 1995 (1995-05-16) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09, 31 juillet 1998 (1998-07-31) & JP 10 110037 A (SEKISUI CHEM CO LTD), 28 avril 1998 (1998-04-28) * |
Also Published As
Publication number | Publication date |
---|---|
FR2816624A1 (fr) | 2002-05-17 |
WO2002038652A3 (fr) | 2003-02-20 |
CA2428083A1 (fr) | 2002-05-16 |
JP2004514004A (ja) | 2004-05-13 |
US20040030170A1 (en) | 2004-02-12 |
EP1355973A2 (fr) | 2003-10-29 |
US6919403B2 (en) | 2005-07-19 |
FR2816624B1 (fr) | 2006-07-21 |
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