WO2000032659A1 - Procede de preparation de copolymeres halogenes, copolymeres obtenus et utilisation de ceux-ci - Google Patents
Procede de preparation de copolymeres halogenes, copolymeres obtenus et utilisation de ceux-ci Download PDFInfo
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- WO2000032659A1 WO2000032659A1 PCT/EP1999/009370 EP9909370W WO0032659A1 WO 2000032659 A1 WO2000032659 A1 WO 2000032659A1 EP 9909370 W EP9909370 W EP 9909370W WO 0032659 A1 WO0032659 A1 WO 0032659A1
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- 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
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/02—Monomers containing chlorine
- C08F214/04—Monomers containing two carbon atoms
- C08F214/08—Vinylidene chloride
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- 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
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/02—Monomers containing chlorine
- C08F214/04—Monomers containing two carbon atoms
- C08F214/08—Vinylidene chloride
- C08F214/10—Vinylidene chloride with nitriles
Definitions
- the invention relates to a process for the preparation of halogenated copolymers, the halogenated copolymers obtained, their use for producing extruded articles and the extruded articles obtained.
- the copolymers of vinylidene chloride and of vinyl chloride are prepared by an aqueous dispersion polymerization process in which all of the two monomers are introduced at the start of the polymerization. This process has the disadvantage of giving rise to relatively low conversion rates into monomers.
- copolymers obtained by this process have the disadvantage of being highly heterogeneous in terms of distribution of the monomers. Furthermore, these copolymers have a relatively low thermal stability and limited flexibility. In addition, these copolymers have a strong tendency to stick, which cause significant deposits of degraded materials on the die used during processing. These copolymers also have the great disadvantage of having a high melting temperature, which implies relatively high processing temperatures.
- the present invention relates to a process which is particularly suitable for the preparation of halogenated copolymers which do not have the drawbacks presented by the processes of the prior art.
- the invention also relates to halogenated copolymers which do not have the drawbacks of the copolymers of the prior art.
- the invention also relates to the use of these halogenated copolymers.
- the invention also relates to the articles obtained from the copolymers according to the invention.
- the invention firstly relates to a process for the preparation of halogenated copolymers by copolymerizing at least two monomers wherein the copolymerization is carried out in aqueous dispersion with an injection delayed by a fraction of the minus one of the monomers.
- delayed injection is meant for the purposes of the present invention, which is introduced, some time after the start of polymerization, a fraction of at least one of the monomers.
- the time when the delayed injection is started is usually the time when the initiation of polymerization is complete.
- the injection is started delayed between 10 and 60 minutes after the start of the polymerization.
- the delayed injection is started at least 10 minutes, preferably at least 15 minutes, particularly preferably at least 20 minutes, very particularly preferably at least 25 minutes after the start of the polymerization.
- the delayed injection is started at the latest 60 minutes, preferably at the latest 50 minutes, particularly preferably at the latest 45 minutes, very particularly preferably at the latest 40 minutes after the start of the polymerization.
- the fraction injected offline can be injected entirely in one go or in fractions or continuously. It is preferably injected continuously.
- the period of time during which the delayed injection takes place generally varies from 60 to 600 minutes. Generally, the period of time during which the delayed injection takes place is at least 60 minutes, preferably at least 100 minutes, particularly preferably at least 150 minutes. Generally, the period of time during which the delayed injection takes place is at most 600 minutes, preferably at most 500 minutes, particularly preferably at most 400 minutes.
- a fraction of a halogenated monomer is preferably injected offline. In a particularly preferred manner, a fraction of the majority halogenated monomer of the halogenated copolymers is injected off-line.
- halogenated copolymers for the purposes of the present invention, the copolymers obtained by radical polymerization in aqueous dispersion of a halogen monomer, called the majority halogen monomer, with one or more monomers copolymerizable with it.
- majority halogen monomer is meant, for the purposes of the present invention, the halogen monomer which is present in the resulting halogen copolymers in an amount of at least 50% by weight.
- halogenated monomer is intended to denote, for the purposes of the present invention, any radical polymerizable monomer having a terminal olefinic unsaturation and substituted by at least one halogen atom.
- these monomers are chosen from substituted derivatives of ethylene and propylene and contain only two or three carbon atoms respectively.
- halogenated monomers such as, for example, vinyl acetate, vinyl ethers, acids, acrylic esters and amides, methacrylic acids, esters and amides, styrene, styrene derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- halogenated copolymers according to the invention applies particularly well to the preparation of copolymers containing chlorine and very particularly well to the preparation of copolymers of vinylidene chloride.
- chlorine-containing copolymers is intended to denote, for the purposes of the present invention, the copolymers obtained by radical polymerization in aqueous dispersion of a chlorine-containing monomer, such as for example vinyl chloride and vinylidene chloride, with one or more several monomers copolymerizable with it.
- a chlorine-containing monomer such as for example vinyl chloride and vinylidene chloride
- the chlorine-containing monomer is in this case the majority halogenated monomer, that is to say that which is present in the resulting copolymers in an amount of at least 50% by weight.
- the monomers which can be copolymerized with the chlorine-containing monomer non-limiting mention may be made of the monomers containing chlorine of different nature, vinyl esters such as, for example, vinyl acetate, vinyl ethers, acrylic acids, esters and amides, methacrylic acids, esters and amides, styrene, styrene derivatives, butadiene, olefins such as, for example, ethylene and propylene. itaconic acid and maleic anhydride.
- vinylidene chloride copolymers is intended to denote, for the purposes of the present invention, copolymers of vinylidene chloride with one or more monomers copolymerizable with it.
- vinylidene chloride is the majority halogenated monomer, that is to say that which is present in the resulting copolymers in an amount of at least 50% by weight.
- vinyl chloride vinyl esters such as for example vinyl acetate, vinyl ethers, acrylic acids, esters and amides, methacrylic acids, esters and amides, styrene, styrenic derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- vinyl esters such as for example vinyl acetate, vinyl ethers, acrylic acids, esters and amides, methacrylic acids, esters and amides, styrene, styrenic derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- the weight ratio, for a monomer of which a fraction is injected offline, between the fraction injected offline and the total amount introduced during the polymerization varies from 20 to 80%.
- the weight ratio, for a monomer of which a fraction is injected offline, between the fraction injected offline and the total amount introduced during the polymerization is greater than or equal to 20%. preferably greater than or equal to 30%, particularly preferably, greater than or equal to 40%.
- the weight ratio, for a monomer of which a fraction is injected delayed, between the fraction injected delayed and the total amount introduced during the polymerization is less than or equal to 80%, preferably less than or equal to 70% , particularly preferably, less than or equal to 60%.
- halogenated copolymers according to the invention applies particularly well to the preparation of copolymers of vinylidene chloride and of vinyl chloride as well as to the preparation of copolymers of vinylidene chloride with vinyl chloride and at least one (meth) acrylic monomer corresponding to the general formula:
- CH 2 CR ⁇ R 2 in which Ri is chosen from hydrogen and the methyl radical and R2 is chosen from the radical -CN and the radical -CO-OR3 in which R3 is chosen from hydrogen, alkyl radicals containing 1 with 18 carbon atoms, the alkoxyalkyl radicals containing a total of 1 to 10 carbon atoms and the -NR4R5 radicals in which R4 and R5 are chosen from hydrogen and an alkyl radical containing from 1 to 10 carbon atoms.
- at least one (meth) acrylic monomer is meant, for the purposes of the present invention, that the copolymers of vinylidene chloride may contain one or more (meth) acrylic monomer (s), hereinafter designated by the (meth) acrylic monomer.
- the (meth) acrylic monomer is preferably chosen from acrylic and methacrylic esters containing from 1 to 8 carbon atoms, particularly preferably from acrylic and methacrylic esters containing from 1 to 6 carbon atoms.
- acrylic and methacrylic esters are methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl acrylate t-butylacrylate, t-butylmethacrylate, n-pentylacrylate, n-pentylmethacrylate, isoamylacrylate, iso ⁇ tmylmethacrylate, n-hexylacrylate, n-hexylmethacrylate, 2-methylpentylcrylate-2-
- the (meth) acrylic monomer is more than particularly preferred, chosen from acrylic and methacrylic esters containing from 1 to 4 carbon atoms.
- acrylic and methacrylic esters examples include methylacrylate, methylmethacrylate, ethylacrylate, ethylmethacrylate, propylacrylate, propylmethacrylate, n-butylacrylate, n-butylmethacrylate, isobutylcrylate . t-butylacrylate and t-butylmethacrylate.
- vinylidene chloride is the majority monomer. Vinylidene chloride is generally present in the resulting copolymers in an amount of at least 50% by weight. In general, the amount of vinylidene chloride in the copolymers of vinylidene chloride varies from 50 to 95% by weight, preferably from 60 to 95% by weight, particularly preferably from 70 to 95% by weight.
- the amount of vinyl chloride in the copolymers of vinylidene chloride varies from 3 to 50% by weight, preferably from 3 to 40% by weight, particularly preferably from 4.25 to 30% by weight.
- the amount of the (meth) acrylic monomer in the vinylidene chloride copolymers varies from 0 to 20% by weight, preferably from 0 to 13% by weight, particularly preferably from 0 to 4.5% by weight .
- the total amount of vinyl chloride can be introduced either into the polymerization charge or offline, or a fraction of the total amount can be introduced into the polymerization charge and the other fraction offline.
- the total amount of vinyl chloride is initially introduced into the polymerization charge.
- the total amount of the (meth) acrylic monomer can be introduced either into the polymerization charge, or offline, or a fraction of the total amount can be introduced into the polymerization charge and the other fraction offline.
- a fraction of the (meth) acrylic monomer is injected off-line.
- the fraction of the (meth) acrylic monomer injected off-line is injected at the same time and under the same conditions as vinylidene chloride.
- the time when the delayed injection is started is usually the time when the initiation of polymerization is complete.
- the injection is started delayed between 10 and 60 minutes after the start of the polymerization.
- the delayed injection is started at least 10 minutes, preferably at least 15 minutes, particularly preferably at least 20 minutes, very particularly preferably at least 25 minutes after the start of the polymerization.
- the delayed injection is started at the latest 60 minutes, preferably at the latest 50 minutes, particularly preferably at the latest 45 minutes, very particularly preferably at the latest 40 minutes after the start of the polymerization.
- the fraction injected offline can be injected entirely in one go or in fractions or continuously. It is preferably injected continuously.
- the period of time during which the delayed injection takes place generally varies from 60 to 600 minutes. Generally, the period of time during which the delayed injection takes place is at least 60 minutes, preferably at least 100 minutes, particularly preferably at least 150 minutes. Generally, the period of time during which the delayed injection takes place is at most 600 minutes, preferably at most 500 minutes, particularly preferably at most 400 minutes.
- the weight ratio for the (meth) acrylic monomer between the fraction injected delayed and the total amount introduced during the polymerization varies from 20 to 80%.
- the weight ratio for the (meth) acrylic monomer between the delayed injected fraction and the total amount introduced during the polymerization is greater than or equal to 20%, preferably greater than or equal to 30%, particularly preferably , greater than or equal to 40%.
- the weight ratio for the (meth) acrylic monomer between the fraction injected delayed and the total amount introduced during the polymerization is less than or equal to 80%, preferably less than or equal to 70%, particularly preferably , less than or equal to 60%.
- copolymerization in aqueous dispersion is intended to denote, for the purposes of the present invention, radical copolymerization in aqueous suspension as well as radical copolymerization in aqueous emulsion.
- radical copolymerization in aqueous suspension is meant, for the purposes of the present invention, any radical copolymerization process carried out in an aqueous medium in the presence of dispersing agents and of oil-soluble radical initiators.
- radical copolymerization in aqueous emulsion is meant, for the purposes of the present invention, any radical copolymerization process carried out in an aqueous medium in the presence of emulsifiers and radical initiators.
- This definition specifically includes the so-called “classic " aqueous emulsion copolymerization in which using water-soluble radical initiators, as well as microsuspension copolymerization, also known as homogenized aqueous dispersion, in which oil-soluble initiators are used and an emulsion of droplets of monomers is produced by means of powerful mechanical stirring and the presence of emulsifying agents.
- the process according to the invention is particularly suitable for the preparation of halogenated copolymers by copolymerization in so-called "conventional" aqueous emulsion which is carried out under conditions known to those skilled in the art.
- the copolymerization is carried out with the intervention of emulsifying agents and water-soluble initiators, present in amounts known to a person skilled in the art.
- emulsifying agents mention may be made of anionic emulsifying agents and nonionic emulsifying agents.
- anionic emulsifying agents that may be mentioned, without limitation, paraffins sulfonates, alkylsulfates, alkylsulfonates, alkylaryl mono or disulfonates and alkylsulfosuccinates.
- nonionic emulsifying agents non-limiting examples that may be mentioned are alkyl- or alkylarylethoxylated derivatives.
- water-soluble initiators examples include water-soluble peroxides such as alkali metal or ammonium persulfates, hydrogen peroxide, perborates, t-butyl hydroperoxide, used alone or in combination with a reducer.
- water-soluble peroxides such as alkali metal or ammonium persulfates, hydrogen peroxide, perborates, t-butyl hydroperoxide, used alone or in combination with a reducer.
- the invention also relates to halogenated copolymers which are homogeneous in terms of distribution of the monomers.
- copolymers which are homogeneous in terms of distribution of the monomers it is understood, for the purposes of the present invention, that the copolymers are characterized by a homogeneous distribution of the monomers in the polymer chain.
- the homogeneous distribution of the monomers in the polymer chain can generally be demonstrated by analytical techniques. Among these, we can cite the determination of mechanical loss by dynamic analysis and NMR ⁇ spectrometry.
- copolymers according to the invention are also characterized by a melting point determined by differential thermal analysis less than or equal to 170 ° C., preferably less than or equal to 155 ° C., of less than or equal to 140 ° C, very particularly preferably less than or equal to 120 ° C
- halogenated copolymers is intended to denote, for the purposes of the present invention, the copolymers obtained by radical polymerization in aqueous dispersion of a halogenated monomer, called the majority halogenated monomer, with one or more monomers copolymerizable with the latter.
- majority halogen monomer is meant, for the purposes of the present invention, the halogen monomer which is present in the resulting halogen copolymers in an amount of at least 50% by weight.
- halogenated monomer is intended to denote, for the purposes of the present invention, any radical polymerizable monomer having a terminal olefinic unsaturation and substituted by at least one halogen atom.
- these monomers are chosen from substituted derivatives of ethylene and propylene and contain only two or three carbon atoms respectively.
- vinyl chloride vinylidene chloride, vinyl bromide, vinylidene bromide, vinyl fluoride, vinylidene fluoride, trifluoroethylene, tetrafluoroethylene, chlorotrifluoroethylene and hexafluoropropylene.
- halogenated monomers such as, for example, vinyl acetate, vinyl ethers, acids, acrylic esters and amides, methacrylic acids, esters and amides, styrene, styrene derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- the halogenated copolymers are preferably copolymers containing chlorine and in a particularly preferred manner, copolymers of vinylidene chloride.
- the term “chlorine-containing copolymers” is intended to denote, for the purposes of the present invention, the copolymers obtained by radical polymerization in aqueous dispersion of a chlorine-containing monomer, such as for example vinyl chloride and vinylidene chloride, with one or more several monomers copolymerizable with it.
- the chlorine-containing monomer is in this case the majority monomer, that is to say that which is present in the resulting copolymers in an amount of at least 50% by weight.
- monomers copolymerizable with the monomer containing chlorine non-limiting mention may be made of, monomers containing chlorine of different nature, vinyl esters such as for example vinyl acetate, vinyl ethers. acrylic acids, esters and amides, methacrylic acids, esters and amides, styrene, styrene derivatives, butadiene, olefins such as ethylene and propylene, itaconic acid and maleic anhydride.
- vinylidene chloride copolymers is intended to denote, for the purposes of the present invention, copolymers of vinylidene chloride with one or more monomers copolymerizable with it.
- vinylidene chloride is the majority monomer, that is to say that which is present in the resulting copolymers in an amount of at least 50% by weight.
- vinyl chloride vinyl esters such as, for example, vinyl acetate, vinyl ethers, acrylic acids, esters and amides, acids , methacrylic esters and amides, styrene, styrene derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- vinyl esters such as, for example, vinyl acetate, vinyl ethers, acrylic acids, esters and amides, acids , methacrylic esters and amides, styrene, styrene derivatives, butadiene, olefins such as, for example, ethylene and propylene, itaconic acid and maleic anhydride.
- CH 2 CR ⁇ R 2 in which Ri is chosen from hydrogen and the methyl radical and R 2 is chosen from the radical -CN and the radical -CO-OR3 in which R3 is chosen from hydrogen, alkyl radicals containing 1 to 18 carbon atoms, the alkoxyalkyl radicals containing a total of 1 to 10 carbon atoms and the -NR4R5 radicals in which R4 and R5 are chosen from hydrogen and an alkyl radical containing from 1 to 10 carbon atoms.
- at least one (meth) acrylic monomer is intended to denote, for the purposes of the present invention, that the copolymers of vinylidene chloride with vinyl chloride may or may not contain at least one (meth) acrylic monomer.
- the vinylidene chloride copolymers can contain one or more (meth) acrylic monomer (s), hereinafter referred to as the (meth) acrylic monomer.
- the (meth) acrylic monomer is preferably chosen from acrylic and methacrylic esters containing from 1 to 8 carbon atoms, more preferably from acrylic and methacrylic esters containing from 1 to 6 carbon atoms.
- acrylic and methacrylic esters examples are methylacrylate, methylmethacrylate, ethylacrylate, ethylmethacrylate.
- the (meth) acrylic monomer is more than particularly preferred, chosen from acrylic and methacrylic esters containing from 1 to 4 carbon atoms.
- acrylic and methacrylic esters examples include methylacrylate, methylmethacrylate, ethylacrylate, ethylmethacrylate, propylacrylate, propylmethacrylate, n-butylacrylate, n-butylmethacrylate, isobutylcrylate , t-butylacrylate and t-butylmethacrylate.
- vinylidene chloride is the majority monomer. Vinylidene chloride is generally present in the resulting copolymers in an amount of at least 50% by weight.
- the amount of vinylidene chloride in the copolymers of vinylidene chloride varies from 50 to 95% by weight, preferably from 60 to 95% by weight, particularly preferably from 70 to 95% by weight. In general, the amount of vinyl chloride in the copolymers of vinylidene chloride varies from 3 to 50% by weight, preferably from 3 to 40% by weight, particularly preferably from 4.25 to 30% by weight.
- the amount of the (meth) acrylic monomer in the copolymers of vinylidene chloride and of vinyl chloride and in the copolymers of vinylidene chloride varies from 0 to 20% by weight, preferably from 0 to 13% by weight, particularly preferably from 0 to 4.5% by weight.
- the invention also relates to the halogenated copolymers obtained by the process according to the invention.
- the invention also relates to the use of the halogenated copolymers according to the invention for the production of extruded articles, for example monolayer or multilayer barrier films bioriented or blown, monolayer or multilayer pipes, monolayer or multilayer sheets and sheets produced by coating extrusion on polymer substrates (polyvinyl chloride, polyethylene terephthalate, polypropylene) or on paper.
- the invention also relates to the extruded articles produced with the halogenated copolymers according to the invention. These articles are usually used in the field of food packaging and in the medical field (for example for pharmaceutical blisters).
- the process according to the invention has the advantage of allowing higher conversion rates to monomers than the processes of the prior art.
- the copolymers according to the invention have the advantage over the copolymers of the prior art of being homogeneous in terms of distribution of the monomers.
- the copolymers according to the invention are unexpectedly characterized by a significantly lower melting temperature than the copolymers of the prior art with the same monomer content. Thanks to this latter property, the copolymers can be used at lower temperatures and do not require the addition of stabilizer during processing. Thanks to their low melting temperature, the copolymers according to the invention have the advantage of being able to be coextruded with other polymers at low melting temperature (ethylene-vinyl acetate copolymers, ethylene-methyl acrylate copolymers, polyamide copolymers ) for the production of extruded articles.
- copolymers according to the invention are characterized by improved thermal stability and flexibility and they do not present any problem of sticking during their use.
- Example 1 (according to the invention) - Preparation of a halogenated copolymer
- 21.7 liters of demineralized water are first introduced.
- 112 g of sodium docecylbenzene sulfonate 112 g
- 5.6 kg of vinylidene chloride 5.6 kg
- vinylidene chloride 4 kg
- the temperature of the reactor is then brought to 40 ° C.
- 0.96 g of hydrogen peroxide and 6.4 g of erythorbic acid are added.
- 30 minutes later, 6.4 kg of vinylidene chloride are then added over a period of approximately 300 minutes.
- the container is then placed under stirring at around 200 revolutions / minute and the temperature is adjusted to 10-14 ° C.
- the whole of the dilute aqueous dispersion obtained is then added for approximately 30 minutes and 5 liters of a 2.1 g / l solution of aluminum sulphate.
- the temperature of the container is then brought to 70 ° C. and maintained for 90 minutes.
- the container is then cooled to room temperature. A slurry is thus obtained.
- This is then dried in two stages.
- the first step is a liquid / solid separation in an ESCHER WYSS® system to form a cake.
- the second step consists in drying the cake in a MUNSTER type fluidized bed with an inlet air temperature of around 60 ° C.
- a halogenated copolymer is obtained with a volatile matter content of less than 0.3%.
- the volatile matter content is determined by measuring the mass loss of the sample after a stay of 45 minutes in a ventilated oven regulated at 120 ° C.
- Example 2 (in accordance with the invention) - Properties of the halogenated copolymer Different properties of the halogenated copolymer obtained in Example 1 were measured. Among these, the relative viscosity, the melting temperature and the modulus of elasticity in tension.
- the relative viscosity is measured using a UBBELOHDE viscometer with constant K of the order of 0.003 at a temperature of 20 ° C.
- the solvent used is tetrahydrofuran.
- the concentration of the halogenated copolymer solution in tetrahydrofuran is 10 g / l.
- the melting temperature is measured using a PERKIN ELMER® differential thermal analysis device. 18 mg of resin are used and the heating rate is 10 ° C / minute.
- the tensile elasticity module is measured according to ISO standard 527 on an extruded non-bioriented 30 ⁇ m monofilament.
- the halogenated copolymer obtained in Example 1 was also analyzed using a dynamic EPLEXOR® analyzer. Measurements were carried out in traction mode on monolayers cast 30 ⁇ m thick of the copolymer obtained in Example 1.
- the temperature ramp is 2 ° C./minute between -60 ° C. and 80 ° C.
- the values observed for the mechanical loss tan ⁇ as a function of the temperature for the copolymer obtained in Example 1 are represented in FIG. 1 by triangles.
- the mechanical loss tan ⁇ is represented on the ordinate and the temperature (° C) is represented on the abscissa.
- the halogenated copolymer obtained in Example 1 was also analyzed by 1 H NMR spectrometry using a DPX 300 NMR spectrometer. Measurements were carried out on a solution of the halogenated copolymer in hexachlorobutadiene. The spectrum obtained is represented in FIG. 2 (the scale indicated represents the chemical shifts in ppm).
- Example 3 (not in accordance with the invention) - Preparation of a halogenated copolymer
- 21.7 liters of demineralized water are first introduced.
- the temperature of the reactor is then brought to 40 ° C.
- the second step consists in drying the cake in a MUNSTER type fluidized bed with an inlet air temperature of around 60 ° C.
- a halogenated copolymer is obtained with a volatile matter content of less than 0.3%.
- the volatile matter content is determined by measuring the mass loss of the sample after a stay of 45 minutes in a ventilated oven regulated at 120 ° C.
- Example 4 (not in accordance with the invention) - Properties of the halogenated copolymer
- the relative viscosity, the melting temperature and the tensile modulus of elasticity of the halogenated copolymer obtained in example 3 were measured in the same way as in Example 2. The results of these various measurements are summarized in Table I.
- the halogenated copolymer obtained in Example 3 was analyzed using a dynamic EPLEXOR® analyzer in the same manner as in Example 2.
- the values observed for the mechanical loss tan ⁇ as a function of the temperature for the copolymer obtained in Example 3 are shown in Figure 1 by squares.
- the mechanical loss tan ⁇ is represented on the ordinate and the temperature (° C) is represented on the abscissa.
- the copolymer obtained in Example 3 was analyzed by NMR ⁇ spectrometry in the same way as in Example 2.
- the spectrum obtained is shown in Figure 3 (the scale indicated represents the chemical shifts in ppm).
- the molar fraction of the various sequences is 16% for the sequences A-A, 38% for the sequences A-B and B-A, and 46% for the sequences B-B.
- the copolymer according to the invention has a significantly lower melting temperature and a significantly higher flexibility than the copolymer obtained according to l prior art.
- FIG. 1 shows that the copolymer according to the invention is characterized by a peak in mechanical loss clearly narrower than the copolymer according to the prior art, which translates into greater homogeneity in terms of distribution of the monomers for the copolymer according to the invention.
- the copolymer according to the invention is characterized by a molar fraction of AA sequences (vinyl chloride-vinyl chloride) much lower than that calculated for the copolymer. obtained according to the prior art. This translates into greater homogeneity in terms of distribution of the monomers for the copolymer according to the invention.
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Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU16570/00A AU1657000A (en) | 1998-12-02 | 1999-11-30 | Method for preparing halogenated copolymers, resulting halogenated copolymers and use thereof |
JP2000585299A JP2002531603A (ja) | 1998-12-02 | 1999-11-30 | ハロゲン化コポリマーの調製法、得られたハロゲン化コポリマー及びそれらの使用 |
CA002353715A CA2353715A1 (fr) | 1998-12-02 | 1999-11-30 | Procede de preparation de copolymeres halogenes, copolymeres obtenus et utilisation de ceux-ci |
EP99959374A EP1141052A1 (fr) | 1998-12-02 | 1999-11-30 | Procede de preparation de copolymeres halogenes, copolymeres obtenus et utilisation de ceux-ci |
BR9915891-4A BR9915891A (pt) | 1998-12-02 | 1999-11-30 | Processo para a preparação de copolìmeros halogenados, copolìmeros halogenados, utilização dos mesmos, e, artigos extrudados |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9800871A BE1012318A3 (fr) | 1998-12-02 | 1998-12-02 | Procede de preparation de copolymeres halogenes, copolymeres halogenes obtenus et utilisation de ceux-ci. |
BE9800871 | 1998-12-02 |
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WO2000032659A1 true WO2000032659A1 (fr) | 2000-06-08 |
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PCT/EP1999/009370 WO2000032659A1 (fr) | 1998-12-02 | 1999-11-30 | Procede de preparation de copolymeres halogenes, copolymeres obtenus et utilisation de ceux-ci |
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EP (1) | EP1141052A1 (fr) |
JP (1) | JP2002531603A (fr) |
CN (1) | CN1333789A (fr) |
AU (1) | AU1657000A (fr) |
BE (1) | BE1012318A3 (fr) |
BR (1) | BR9915891A (fr) |
CA (1) | CA2353715A1 (fr) |
RU (1) | RU2001117853A (fr) |
WO (1) | WO2000032659A1 (fr) |
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CN101560276B (zh) * | 2009-05-21 | 2011-12-07 | 浙江巨化股份有限公司电化厂 | 一种vdc/ma共聚pvdc组合物 |
WO2012133813A1 (fr) * | 2011-03-31 | 2012-10-04 | ダイキン工業株式会社 | Copolymère d'hexafluoropropylène-(acétate de vinyle) |
WO2014054413A1 (fr) * | 2012-10-01 | 2014-04-10 | 株式会社クレハ | Composition de résine copolymère à base de chlorure de vinylidène et produit moulé obtenu |
JP6795350B2 (ja) * | 2016-08-08 | 2020-12-02 | 株式会社クレハ | 塩化ビニリデン系樹脂フィルム、それを用いたラップフィルム、及び当該樹脂フィルムの製造方法 |
JP6913506B2 (ja) * | 2017-05-16 | 2021-08-04 | 株式会社クレハ | 塩化ビニリデン系樹脂フィルム及び塩化ビニリデン系樹脂組成物 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB692378A (en) * | 1950-04-12 | 1953-06-03 | Dow Chemical Co | Method of copolymerizing vinylidene chloride and vinyl chloride |
EP0030080A1 (fr) * | 1979-11-21 | 1981-06-10 | Imperial Chemical Industries Plc | Compositions de latex de copolymères de chlorure de vinylidène et procédé de revêtement avec celles-ci |
-
1998
- 1998-12-02 BE BE9800871A patent/BE1012318A3/fr not_active IP Right Cessation
-
1999
- 1999-11-30 AU AU16570/00A patent/AU1657000A/en not_active Abandoned
- 1999-11-30 BR BR9915891-4A patent/BR9915891A/pt not_active IP Right Cessation
- 1999-11-30 WO PCT/EP1999/009370 patent/WO2000032659A1/fr not_active Application Discontinuation
- 1999-11-30 CN CN 99815837 patent/CN1333789A/zh active Pending
- 1999-11-30 CA CA002353715A patent/CA2353715A1/fr not_active Abandoned
- 1999-11-30 RU RU2001117853/04A patent/RU2001117853A/ru unknown
- 1999-11-30 EP EP99959374A patent/EP1141052A1/fr not_active Withdrawn
- 1999-11-30 JP JP2000585299A patent/JP2002531603A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB692378A (en) * | 1950-04-12 | 1953-06-03 | Dow Chemical Co | Method of copolymerizing vinylidene chloride and vinyl chloride |
EP0030080A1 (fr) * | 1979-11-21 | 1981-06-10 | Imperial Chemical Industries Plc | Compositions de latex de copolymères de chlorure de vinylidène et procédé de revêtement avec celles-ci |
Non-Patent Citations (2)
Title |
---|
CHEMICAL ABSTRACTS, vol. 72, no. 10, 9 March 1970, Columbus, Ohio, US; abstract no. 44183, XP002103954 * |
KHIM. KHIM. TEKNOL., vol. 263-6, no. 6, 1968 * |
Also Published As
Publication number | Publication date |
---|---|
BR9915891A (pt) | 2001-08-21 |
CA2353715A1 (fr) | 2000-06-08 |
AU1657000A (en) | 2000-06-19 |
JP2002531603A (ja) | 2002-09-24 |
BE1012318A3 (fr) | 2000-09-05 |
RU2001117853A (ru) | 2004-01-20 |
CN1333789A (zh) | 2002-01-30 |
EP1141052A1 (fr) | 2001-10-10 |
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