WO2000055213A1 - Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration de compositions reticulees dynamiquement et de compositions hybrides organiques-inorganiques conservant un caractere thermoplastique - Google Patents
Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration de compositions reticulees dynamiquement et de compositions hybrides organiques-inorganiques conservant un caractere thermoplastique Download PDFInfo
- Publication number
- WO2000055213A1 WO2000055213A1 PCT/FR2000/000628 FR0000628W WO0055213A1 WO 2000055213 A1 WO2000055213 A1 WO 2000055213A1 FR 0000628 W FR0000628 W FR 0000628W WO 0055213 A1 WO0055213 A1 WO 0055213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vinyl acetate
- copolymer
- alcoholate
- crosslinking
- acetate units
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2810/00—Chemical modification of a polymer
- C08F2810/20—Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2810/00—Chemical modification of a polymer
- C08F2810/50—Chemical modification of a polymer wherein the polymer is a copolymer and the modification is taking place only on one or more of the monomers present in minority
Definitions
- the present invention relates to a process for crosslinking a thermoplastic polymer or copolymer with vinyl acetate units by an alcoholate in the presence of a catalyst.
- the invention also relates to a process for the preparation of dynamically crosslinked compositions and retaining, after crosslinking, their thermoplastic character for their subsequent applications, these compositions initially comprising a thermoplastic phase which will not be crosslinked and another phase which will be crosslinked, this phase being constituted by a thermoplastic polymer or copolymer with vinyl acetate units, which can be an elastomer, and an alcoholate as crosslinking agent and a catalyst.
- the invention also relates to a process for dispersing and grafting an inorganic network onto a thermoplastic polymer or copolymer with vinyl acetate units, by coupling the crosslinking reaction with the alcoholate in the presence of a catalyst and a reaction of hydrolysis of this alcoholate after crosslinking.
- the invention finally relates to a process for the preparation of organic-inorganic hybrid compositions retaining, after crosslinking and hydrolysis-condensation, a thermoplastic character for their subsequent applications, these compositions initially comprising a thermoplastic phase which will not be crosslinked and another phase constituted by a polymer or copolymer with vinyl acetate units, which can be an elastomer, and an alcoholate as crosslinking agent and a catalyst, leading to the crosslinking of the polymer or copolymer with vinyl acetate units followed by hydrolysis-condensation of the alcoholate.
- thermoplastic character (TPV)
- a TPV is composed of a crosslinked phase and dispersed in a continuous thermoplastic phase.
- the TPV is known by the name TPE-V.
- TPE-V presents with on the one hand a thermoplastic character in the molten state allowing its subsequent shaping and on the other hand has the characteristic properties of crosslinked elastomers.
- the dynamic crosslinking process is generally used. This process consists in crosslinking an elastomeric phase in the presence of a thermoplastic under special mixing conditions (temperature and shear), thus generating a morphology of the final material, such that fine particles of crosslinked elastomer are dispersed in a thermoplastic matrix.
- thermoplastic phase is a semi-crystalline polyolefin of PP type and the elastomer phase is an EVA.
- US-4,348,502 describes PA-elastomer mixtures.
- EVN with a mass content of vinyl acetate of between 40 and 70%, is used to constitute the elastomer phase of these mixtures.
- the weight compositions are 15 to 75% of PA for 85 to 25% of EVA respectively.
- a disadvantage of the prior techniques is that the crosslinking system used to crosslink the elastomer phase of PP / elastomer or PN / elastomer mixtures often involves organic peroxides: this type of crosslinking involves radical reactions, which, in the case of PP, induce secondary reactions of chain cuts causing its degradation and alteration of its properties, and, in the case of PE or PN, crosslinking reactions making TPV thermoset.
- POS can be done by discontinuous and continuous processes.
- EVN / PP type POS during an extrusion operation.
- polymers or copolymers with vinyl acetate units by a transesterification reaction, between an ester function of the polymer or copolymer with vinyl acetate units and an alcoholate function, in the presence of a catalyst.
- This reaction is not radical.
- This crosslinking chemistry of polymers or copolymers with vinyl acetate units can be applied to the preparation of dynamically crosslinked compositions which, after their crosslinking, a thermoplastic character for their subsequent applications (TPV) by discontinuous and / or continuous processing operations.
- TPV thermoplastic character for their subsequent applications
- organic-inorganic hybrid compositions By coupling the crosslinking reaction of the polymer or copolymer with vinyl acetate units by an alcoholate in the presence of a catalyst and the hydrolysis-condensation reaction of this alcoholate, it is possible to obtain organic-inorganic hybrid compositions. These organic-inorganic hybrid compositions produced in the presence of a second thermoplastic phase lead to organic-inorganic hybrid TPVs.
- a process for crosslinking a thermoplastic polymer or copolymer with vinyl acetate units consists in reacting, during the processing operations, at a temperature between 80 ° C. and
- the transesterification reaction used is an exchange reaction between the ester functions of the thermoplastic polymer or copolymer with vinyl acetate units, and the alcoholate functions of the crosslinking agent in the presence of a catalyst, according to reaction scheme 1.
- the crosslinking temperature is preferably from 110 ° C to 230 ° C.
- the polymer or copolymer with vinyl acetate units is chosen from the group of ethylene-vinyl acetate copolymers.
- copolymers of ethylene and vinyl acetate having between 28% vinyl acetate and 60% vinyl acetate which are elastomers.
- copolymers of ethylene and vinyl acetate having a vinyl acetate content of less than 28% can also be crosslinked according to the method of the invention.
- the multifunctional alcoholate of type M (OR) x can be a trifunctional alcoholate of general formula R'-M (OR) 3 , or bifunctional of general formula R'R "-M (OR) 2 , or very advantageously a tetrafunctional alcoholate , of general formula M (OR) 4 , M possibly being very preferably Si.
- a tetraalkylorthosilicate (or tetralkoxysilane) of general formula Si (OR) 4 is used , in which R is an aromatic or aliphatic group of 1 with 20 carbon atoms, R preferably being a methyl, ethyl, propyl or butyl group, R can also be an aromatic group, M can also be Ti [titanate, Ti (OR) 4 ], Al, [aluminate, Al (OR ) 3 ] or Zr [zirconate, Zn (OR) 4 ], or others
- the initial concentration of multifunctional alcoholate expressed by the molar ratio, number of moles of vinyl acetate functions of the polymer or copolymer with acetate units of vinyl on the number of moles of fon ctions alcoholate of the multifunctional alcoholate (AV / OR), is substantially between 0.1 and 30, preferably between 0.3 and 10.
- the catalyst can be an organometallic compound. We choose a tin derivative, preferably an an
- the catalyst concentration expressed in parts by mass per hundred parts by mass of polymer or copolymer with vinyl acetate units, is substantially between 0.1 and 3 parts by mass (pcr), preferably between 0.5 and 1.5 parts by mass (pcr).
- the process also has real flexibility of use, making it possible to separate the shaping step and the crosslinking step.
- a mixture of the reagent composition can be produced at a temperature of 50 to 100 ° C corresponding to the melting temperature of the polymer or copolymer with vinyl acetate units without causing crosslinking. This composition is subsequently taken up and implemented, for example, by rotational molding, then by increasing the temperature, crosslinking is caused.
- a method for preparing a TPV consists in carrying out, during the implementation operations, at a temperature between 80 ° C. and 280 ° C., dynamic crosslinking of a reactive mixture comprising a first polymer or copolymer with vinyl acetate units, a multifunctional alcoholate, a catalyst, and in the presence of a second thermoplastic polymer or copolymer.
- thermoplastic polymer or copolymer can be chosen from the group of polyolefins, or olefin copolymers, or polyamides, or thermoplastic polyurethanes (TPU).
- polyolefins are used from which polypropylene (PP) and polyethylene (PE) can be particularly chosen.
- the inorganic network of M y O z type is preferably a network of silica SiO 2 .
- the synthesis of a particularly advantageous organic-inorganic hybrid material of the polymer-silica type is carried out in two main stages, according to reaction scheme 2.
- the polymer is crosslinked with an alkoxysilane in the presence of the catalyst.
- the crosslinked material is hydrolyzed, for example in the presence of acidulated water.
- we speak of hydrolysis-condensation we speak of hydrolysis-condensation.
- the silanol groups resulting from the hydrolysis of the alkoxysilanes will condense to form silica in situ.
- the cohesion of the material is then ensured by silica-polymer interactions and probably by non-hydrolysed Si-O- (polymer) bonds.
- the SiO 2 silica network is grafted onto the crosslinking bridges by the hydrolysis-condensation of the OR bonds.
- the inorganic network is grafted onto the organic network.
- a nanometric dispersion of the filler is then obtained in an already crosslinked thermoplastic polymer.
- the limiting step being the diffusion of water in the polymer network
- a method for preparing a material implies that the molecule in question does not release its water too early, so that there is first crosslinking of the polymer or copolymer with vinyl acetate units by the alkoxysilanes in the presence of the catalyst, then hydrolysis-condensation of alkoxysilanes, leading to a network of silica grafted on the organic network.
- This entity must, on the other hand, be chemically inert with respect to the reactive groups present, that is to say not to generate side reactions.
- a hydrating filler can be added, for example trisodium citrate dihydrate, or alumina trihydrate, or others still.
- Organic-inorganic hybrid TPV comprises the steps consisting in: a) dynamically cross-linking a first thermoplastic polymer or copolymer with vinyl acetate units, by reacting, during the processing operations, at a temperature between 80 ° C. and 280 ° C: the first polymer or copolymer with vinyl acetate units, and a multifunctional alcoholate, in the presence of a catalyst, to obtain an organic network; and b) causing the hydrolysis-condensation of the multi-functional alcoholate belonging to the organic network obtained in step a) and of the excess multi-functional alcoholate, in the presence of water, to obtain the inorganic network; in the presence of a second thermoplastic polymer or copolymer.
- Any dynamic crosslinking is carried out during a batch processing operation, for example in an internal mixer, and / or is carried out during a continuous processing operation such as, for example, in an extruder.
- a compatibilizing agent and / or a plasticizing agent for the polymer or copolymer with vinyl acetate units for example diesters of phthalic acids, for example phthalate of dioctyl, and trimellitic and diesters of aliphatic diacids, for example of the methyl adipate, octyl adipate type.
- thermoplastic polymers such as stabilizers, anti-UV, colored pigments (carbon black, titanium dioxide, etc.), fibers, agents facilitating the setting. work, etc.
- the initial concentration of tetrafunctional alcoholate of tetrapropylorthosilicate or tetrapropoxysilane (TPOS) type is given by the molar ratio AV / OR (number of moles of vinyl acetate functions of the copolymer with vinyl acetate EVA units over the number of moles of propoxysilane functions of TPOS).
- the initial concentration of DBTO catalyst is expressed in parts by mass (pcr) per 100 parts by mass of EVA.
- EVA 28% is, for example, marketed by Elf-Atochem under the trade name Evatane® 28-03. Its melting point is around 75 ° C and its degree of crystallinity is around 20%.
- EVA 40% is, for example, marketed by Elf-Atochem under the trade name Evatane® 40-55, or by DuPont under the trade name Elvax® 40W. Its melting temperature is around 50 ° C and its degree of crystallinity is less than 10%.
- the TPOS is, for example, marketed by the company Lancaster or the company Roth-Sochiel.
- DBTO is, for example, marketed by the company Sigma-Aldrich or the company Goldschmidt.
- thermoplastic polymers or copolymers with vinyl acetate units produced according to the methods of the invention, as well as their subsequent applications in fields such as the automobile, cables, flame retardants, in particular for building , household appliances, also belong to the invention.
- Figure 2 gives the crosslinking kinetics of two 28% EVA formulations at 170 ° C.
- DBTO are all factors that can be varied to obtain the kinetics of crosslinking of a given EVA, by the TPOS in the presence of DBTO, as quickly as possible. These results therefore make it possible to grasp all of the experimental conditions (temperature, concentrations of TPOS crosslinking agent and of DBTO catalyst) making it possible to adjust the crosslinking kinetics for each EVA with the residence times, compatible with processes. batch (for example Banbury type internal mixer, or rotational molding) and continuous processes (for example extrusion).
- thermomechanical behavior of polymers or copolymers with crosslinked vinyl acetate units in accordance with the method according to the invention, using a Dynamic Mechanical Spectrometer (RMS 800), has shown that these materials no longer have a zone of flow past their melting point.
- RMS 800 Dynamic Mechanical Spectrometer
- the operating conditions are 180 ° C for the temperature setpoint and 50 rpm for the speed of rotation of the blades.
- Figure 3 shows the evolution of the torque and the material temperature over time for the following mixtures:
- thermoplastic nature of the final mixture recovered at the outlet of the Haake plastograph was studied with a plate press (200 ° C, under pressure, for a few minutes). Getting back into shape material is satisfactory.
- the dynamically crosslinked EVN / PP final material has a thermoplastic character in the molten state for its subsequent shaping.
- the dynamic crosslinking of the reactive EVA / PP / mixture leads to a final material which has a thermoplastic character in the molten state with an insoluble EVA level of the order of 80%. It is therefore possible to use the crosslinking chemistry of an EVA by transesterification reaction with TPOS catalyzed by DBTO to develop TPV materials of the EVA / PP type by batch processes.
- crosslinking is done well in the extruder.
- the crosslinking kinetics of EVA by a transesterification reaction with TPOS, catalyzed by DBTO, is compatible with the residence times in an extruder, of the order of a few minutes.
- the crosslinking chemistry of EVA by the crosslinking system (TPOS + DBTO) can be used to develop EVA / PP type PV materials by continuous processes, such as extrusion.
- a TPV contains many additives in addition to the two polymers constituting the thermoplastic and elastomeric phases.
- these TPV materials contain a non-negligible amount of plasticizer.
- the plasticizer was taken and studied during the dynamic crosslinking of a reactive EVA / PP / mixture (TPOS + DBTO).
- the plasticizer used is DOP (DiOctyl Phthalate).
- Figure 4 shows the evolution of the torque and the material temperature as a function of time for the three plasticized mixtures and for a reference mixture of equivalent composition without plasticizer.
- Example 5 In order to prepare an organic-inorganic hybrid material based on EVA-silica, the following composition was crosslinked under press (at about 200 bars), at 150 ° C., for 45 min:
- Gv 1 + (G p - 1) x (p ⁇ / p 2 )
- G p swelling rate by weight (weight of the swollen reticulate / weight of the dried reticulate)
- pi density of solvent
- p 2 density of dry polymer
- the swelling rate remains of the same order of magnitude as after crosslinking: the hybrid material EV A-silica remains crosslinked.
- the modulus of elasticity (E) measured after hydrolysis is dependent on the time of prior cooking treatment. In fact, an increase in the modulus is observed with the cooking time, which is not the case before the hydrolysis.
- the cooking time prior to hydrolysis regulates the crosslinking density of the EVA and influences the elastic modulus of the organic-inorganic hybrid material.
- the modulus of elasticity increases considerably to become greater than that of 1 ⁇ VA. This gives the material obtained a reinforcing effect and good resistance to creep.
- the breaking stress it increases significantly compared to the material after baking, but remains lower than that of EVA.
- the organic-inorganic hybrid material retains good elongation properties at break.
- Trisodium citrate dihydrate (Na 3 C 6 H 5 0 7 , 2H 2 0) generates water quickly and quantitatively from 160 ° C. Under these conditions, it is possible to separate the crosslinking step (temperature range 80 ° C - 150 ° C) from the hydrolysis step, by varying the temperature.
- the TPOS hydrolysis step leads to the formation of propanol, which can be determined by gas chromatography, which makes it possible to follow the hydrolysis reaction.
- FIG. 6 giving the number of moles of propanol relative to the number of moles of propoxysilane function introduced as a function of time at 160 ° C., shows the effectiveness of the trisodium citrate dihydrate. In a soul 20 minutes, the rate of hydrolysis reached 40% for a moisturizing load with a concentration 23.7 phr.
- the hydrolysis time goes from a few hours, or even several days, to the ten minute scale.
- the swelling rates of the organic-inorganic hybrid material remain of the same order of magnitude as those of the crosslinked material before hydrolysis.
- polypropylene homopolymer (APPRYL® 3120 MN1 of APPRYL): PP (grade 12)
- cross-linking agent multi-functional alcoholate tetrapropylorthosilicate, TPOS
- dibutyl tin oxide dibutyl tin oxide
- DBTO TEGOKAT® 248 from GOLDSCHMIDT
- the components of each reactive mixture [the two polymers, the crosslinking agent, the catalyst and, optionally, a plasticizing oil such as dioctyl phthalate (DOP)] are introduced at the same time into the volumetric metering device in the feeding zone.
- DOP dioctyl phthalate
- thermoplastic subsequent shaping of the final mixture by extrusion and injection-molding
- crosslinked EVA phase whose crosslinking rate is expressed by the percentage of insoluble EVA.
- composition of the reactive mixtures :
- DOP dioctyl phthalate
- This reactive mixture was produced in a twin-screw extruder (MARIS TM 40 MW), in a co-rotary configuration, operating under degassing.
- the components of the reactive mixture comprising the two polymers and the catalyst were introduced into the volumetric metering device in the feed zone while the TPOS crosslinking agent was injected by means of a pump.
- the plasticizer (DOP) it was introduced (injection using a second pump) into a zone of the extruder where the crosslinking reaction of the EVA phase was well advanced.
- the temperature profile along the barrel was of the order of 220 ° C., while the speed of rotation of the screw was of the order of 160 RPM and the flow rate of the mixture at the outlet of the extruder was of the order of 20 kg / h.
- the material obtained after crosslinking had a thermoplastic character for its subsequent applications.
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- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002364574A CA2364574A1 (fr) | 1999-03-15 | 2000-03-15 | Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration d'elastomeres thermoplastiques reticules dynamiquement et de materiaux hybrides organiques-inorganiques |
JP2000605639A JP2002539296A (ja) | 1999-03-15 | 2000-03-15 | 酢酸ビニルの(コ)ポリマーの架橋方法と、動的架橋した熱可塑性を保持した無機−有機混成組成物の製造方法 |
EP00910952A EP1175449A1 (fr) | 1999-03-15 | 2000-03-15 | Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration de compositions reticulees dynamiquement et de compositions hybrides organiques-inorganiques conservant un caractere thermoplastique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9903540A FR2791062B1 (fr) | 1999-03-15 | 1999-03-15 | Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration d'elastomeres thermoplastiques reticules dynamiquement et de materiaux hybrides organiques-inorganiques |
FR99/03540 | 1999-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000055213A1 true WO2000055213A1 (fr) | 2000-09-21 |
Family
ID=9543487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/000628 WO2000055213A1 (fr) | 1999-03-15 | 2000-03-15 | Reticulation de polymeres ou copolymeres de l'acetate de vinyle, elaboration de compositions reticulees dynamiquement et de compositions hybrides organiques-inorganiques conservant un caractere thermoplastique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1175449A1 (fr) |
JP (1) | JP2002539296A (fr) |
CA (1) | CA2364574A1 (fr) |
FR (1) | FR2791062B1 (fr) |
WO (1) | WO2000055213A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007040819A1 (fr) * | 2005-09-16 | 2007-04-12 | Boston Scientific Limited (Barbados Home Office) | Dispositifs medicaux prepares a partir de materiaux hybrides polymeriques-inorganiques par reaction de transesterification ester-alcoxy durant un traitement par fusion |
EP1894947A1 (fr) * | 2006-09-02 | 2008-03-05 | Lanxess Deutschland GmbH | Composition vulcanisable à base de copolymères d'éthylène acétate de vinyle, sa fabrication et son utilisation pour la fabrication d'articles dotés de caractéristiques élastomères en caoutchouc |
US8008395B2 (en) | 2005-09-27 | 2011-08-30 | Boston Scientific Scimed, Inc. | Organic-inorganic hybrid particle material and polymer compositions containing same |
US9125968B2 (en) | 2005-03-30 | 2015-09-08 | Boston Scientific Scimed, Inc. | Polymeric/ceramic composite materials for use in medical devices |
WO2024011919A1 (fr) * | 2022-07-15 | 2024-01-18 | 黎明职业大学 | Procédé de préparation de matériau eva et matériau eva |
Citations (10)
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GB959148A (en) * | 1961-10-25 | 1964-05-27 | Grace W R & Co | Process for the production of hydroxylated polyethylene |
GB1138261A (en) * | 1966-08-27 | 1968-12-27 | Asahi Chemical Ind | Process for chemically modifying polymers |
US3491075A (en) * | 1965-10-13 | 1970-01-20 | Union Oil Co | Crosslinking of polymers having dependent ester groups with polyvalent metal alkoxides |
US3553176A (en) * | 1966-08-30 | 1971-01-05 | Asahi Chemical Ind | Process for modifying polyolefins |
DE1770792A1 (de) * | 1968-07-04 | 1971-12-02 | Leuna Werke Veb | Verfahren zur Vernetzung von vinylesterhaltigen Olefincopolymerisaten |
US3754983A (en) * | 1971-01-28 | 1973-08-28 | Union Oil Co | Articles coated with wax composition and method of making |
FR2380320A1 (fr) * | 1977-02-14 | 1978-09-08 | Monsanto Co | Compositions elastoplastiques de caoutchoucs ethylene-acetate de vinyle et de resines de polyolefines |
US4348502A (en) * | 1981-01-23 | 1982-09-07 | Monsanto Company | Thermoplastic compositions of nylon and ethylene-vinyl acetate rubber |
GB2116981A (en) * | 1982-03-15 | 1983-10-05 | Leuna Werke Veb | Alcoholysis of olefin/vinyl ester copolymers |
EP0581576A1 (fr) * | 1992-07-30 | 1994-02-02 | Mizu Systems, Inc. | Produits de réaction de polymères organiques et d'alkoxydes inorganiques ou de silanes halogénés |
-
1999
- 1999-03-15 FR FR9903540A patent/FR2791062B1/fr not_active Expired - Fee Related
-
2000
- 2000-03-15 JP JP2000605639A patent/JP2002539296A/ja not_active Withdrawn
- 2000-03-15 EP EP00910952A patent/EP1175449A1/fr not_active Withdrawn
- 2000-03-15 WO PCT/FR2000/000628 patent/WO2000055213A1/fr not_active Application Discontinuation
- 2000-03-15 CA CA002364574A patent/CA2364574A1/fr not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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GB959148A (en) * | 1961-10-25 | 1964-05-27 | Grace W R & Co | Process for the production of hydroxylated polyethylene |
US3491075A (en) * | 1965-10-13 | 1970-01-20 | Union Oil Co | Crosslinking of polymers having dependent ester groups with polyvalent metal alkoxides |
GB1138261A (en) * | 1966-08-27 | 1968-12-27 | Asahi Chemical Ind | Process for chemically modifying polymers |
US3553176A (en) * | 1966-08-30 | 1971-01-05 | Asahi Chemical Ind | Process for modifying polyolefins |
DE1770792A1 (de) * | 1968-07-04 | 1971-12-02 | Leuna Werke Veb | Verfahren zur Vernetzung von vinylesterhaltigen Olefincopolymerisaten |
US3754983A (en) * | 1971-01-28 | 1973-08-28 | Union Oil Co | Articles coated with wax composition and method of making |
FR2380320A1 (fr) * | 1977-02-14 | 1978-09-08 | Monsanto Co | Compositions elastoplastiques de caoutchoucs ethylene-acetate de vinyle et de resines de polyolefines |
US4348502A (en) * | 1981-01-23 | 1982-09-07 | Monsanto Company | Thermoplastic compositions of nylon and ethylene-vinyl acetate rubber |
GB2116981A (en) * | 1982-03-15 | 1983-10-05 | Leuna Werke Veb | Alcoholysis of olefin/vinyl ester copolymers |
EP0581576A1 (fr) * | 1992-07-30 | 1994-02-02 | Mizu Systems, Inc. | Produits de réaction de polymères organiques et d'alkoxydes inorganiques ou de silanes halogénés |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9125968B2 (en) | 2005-03-30 | 2015-09-08 | Boston Scientific Scimed, Inc. | Polymeric/ceramic composite materials for use in medical devices |
WO2007040819A1 (fr) * | 2005-09-16 | 2007-04-12 | Boston Scientific Limited (Barbados Home Office) | Dispositifs medicaux prepares a partir de materiaux hybrides polymeriques-inorganiques par reaction de transesterification ester-alcoxy durant un traitement par fusion |
US7365126B2 (en) | 2005-09-16 | 2008-04-29 | Boston Scientific Scimed, Inc. | Medical device articles formed from polymer-inorganic hybrids prepared by ester-alkoxy transesterification reaction during melt processing |
US8008395B2 (en) | 2005-09-27 | 2011-08-30 | Boston Scientific Scimed, Inc. | Organic-inorganic hybrid particle material and polymer compositions containing same |
EP1894947A1 (fr) * | 2006-09-02 | 2008-03-05 | Lanxess Deutschland GmbH | Composition vulcanisable à base de copolymères d'éthylène acétate de vinyle, sa fabrication et son utilisation pour la fabrication d'articles dotés de caractéristiques élastomères en caoutchouc |
WO2024011919A1 (fr) * | 2022-07-15 | 2024-01-18 | 黎明职业大学 | Procédé de préparation de matériau eva et matériau eva |
Also Published As
Publication number | Publication date |
---|---|
CA2364574A1 (fr) | 2000-09-21 |
FR2791062B1 (fr) | 2003-09-12 |
EP1175449A1 (fr) | 2002-01-30 |
FR2791062A1 (fr) | 2000-09-22 |
JP2002539296A (ja) | 2002-11-19 |
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