Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/20—Manufacture of shaped structures of ion-exchange resins
  • C08J5/22—Films, membranes or diaphragms
  • C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
  • C08J5/2218—Synthetic macromolecular compounds
  • C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
  • C08J5/2243—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds obtained by introduction of active groups capable of ion-exchange into compounds of the type C08J5/2231
  • C08J5/225—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds obtained by introduction of active groups capable of ion-exchange into compounds of the type C08J5/2231 containing fluorine
• • 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
  • C08F214/18—Monomers containing fluorine
• • 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
  • C08F8/44—Preparation of metal salts or ammonium salts
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/20—Manufacture of shaped structures of ion-exchange resins
  • C08J5/22—Films, membranes or diaphragms
  • C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
  • C08J5/2218—Synthetic macromolecular compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2327/00—Characterised by the use of homopolymers or 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; Derivatives of such polymers
  • C08J2327/02—Characterised by the use of homopolymers or 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; Derivatives of such polymers not modified by chemical after-treatment
  • C08J2327/12—Characterised by the use of homopolymers or 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms

Definitions

• the present invention relates to ion exchange resins of the type
• cationic, in particular in membrane form preferably partially or
• electrochemicals such as fuel cells, chlorine-soda processes,
• FC CF ⁇ O-CF ) CF-O ' • (CF 2 t-C0 2 CH 3
• X is F, Cl or CF 3 ;
• - n is 0 to 10 inclusive
• Aromatic polymers of the polyimide or polyether sulfone sulfone type have
• sulfonate and carboxylate includes proton, cation of an alkali metal (Li + , Na + , K + );
• onium type, such as oxonium, ammonium, pyridinium, guanidinium, amidinium,
• organometallic cation such as metallocenium
• the membrane does not have good dimensional stability and swells so
• TFE Tetrafluoroethylene
• the perfluorocarbon portion of the polymer allows easy diffusion of the species
• Faradaic efficiency mainly in methanol fuel cells.
• Non-fluorinated systems such as sulfonated polyimides or polyethers
• the present invention relates to a sulfone polymer comprising a fraction
• crosslinking bonds carry an ionic charge. More specifically, the links of
• crosslinking are of the type:
• - Y includes N or CR in which R comprises H, CN, F, SO 2 R 3 , C ] _ 20 substituted alkyl
• R 3 includes F, C 2Q substituted or unsubstituted alkyl; C ⁇ o aryl substituted or not
• M + comprises an inorganic or organic cation
• Q comprises a divalent radical C ⁇ alkyl, C ⁇ o oxaalkyle, C, _ 20 azaalkyle, C ⁇
• halogens by one or more halogens, and in which the chain comprises one or more
• r is 0 or 1.
• M + comprises the proton, the cation of a
• alkyl alkenyl, oxaalkyl, oxaalkenyl, azaalkyl radicals
• heteroatoms such as nitrogen, oxygen or sulfur
• the metal preferably comprises an alkali metal, an alkali metal
• the organometallic cation includes a
• metallocenium an arene-metallocenium, an alkylsilyl, an alkylgermanyl or a
• alkyltin and the organic cation comprises a group R "O + (onium), NR" + (ammo ⁇
• organic contains at least two R "radicals different from H, these radicals can be
• the present invention further comprises a method of crosslinking
• crosslinking bonds carry an ionic charge
• crosslinking bonds The preferred crosslinking agents have the formula:
• crosslinks i.e., links, between the sulfonyl groups attached to
• adjacent polymer chains including those with a perfluorinated backbone, for example,
• FC CF- 0- CF 2 -CF- ( CF 2 -CF -SO, FI
• the crosslinking can be carried out while the polymer - 8 -
• the present invention also relates to the molding of the crosslinked polymer in the form
• membranes for use in a pile
• polymer chain is also part of the invention.
• R - A includes M, Si (R ') 3 , Ge (R') 3 or Sn (R ') 3 in which R' is C ,. lg alkyl;
• - L comprises a labile group such as a halogen (F, Cl, Br), a heterocycle
• the cation M + can itself be solvated or complexed to increase its
• solubility and / or its reactivity For example, if M is a proton, the latter can be
• a tertiary base having a strong nucleophilic character such as
• cross-linking agent A 2 Y " (M + ) can be formed in situ by
• a strong base for example an organometallic or an amino dialkyl
• organometallic crosslinking agents include organo-
• crosslinking in addition to improving the mechanical properties, has no harmful effect on the
• DABCO 1,4-diazabicyclo- [2,2,2,] - octane. - 11 -
• the crosslinking reaction can take place when the
• group Y is already on the precursor of the polymer, for example in the case of a
• the crosslinking reaction can involve all of the groups
• crosslinking reagents can be any crosslinking reagent that can be used.
• the polymer is molded into the desired form before crosslinking, by
• the preferred solvents are polyhalocarbons,
• THF tetrahydrofuran
• glymes glymes
• tertiary alkylamides such as
• temperatures are chosen as compatible with usual solvents, from -10 ° C to
• a latex of the molding polymer is preferably mixed in
• non-solvent fluids such as ordinary hydrocarbons or
• filling organic or inorganic, such as powders, fibers or filaments
• woven or not can be added to the polymers before the crosslinking reaction to
• halogen organic particularly fluorinated
• crosslinkers such as M [(CH 3 ) 3 SiO], M [(CH 3 ) 3 SiNSO 2 R F ] or M [(CH 3 ) 3 SiC (R) SO 2 R F ], or
• crosslinking agent and the non-crosslinking ionogenic agent are mixed
• the crosslinked polymer obtained according to the process of the present invention can be any crosslinked polymer obtained according to the process of the present invention.
• reaction side products which are either volatile, such as
• crosslinked polymer (CH 3 ) 3 SiF or (CH 3 ) 3 SiCl.
• the crosslinked polymer can be washed using
• a suitable solvent such as water or an organic solvent in which it is insoluble.
• ion exchange or electrophoresis can be used to change the
• chlorosulfonated form in chlorosulfonated form is formed into a film by pressing and calendering at 150 ° C.
• a film 50 microns thick is cut into squares 4 cm wide and immersed in
• DMEU dimethylethyleneuree
• boiling temperature is less than 10%.
• polypropylene are immersed in a glass tank and covered with a solution of
• perfluorovinyloxyethane-sulfonyl of example 3 is treated with a solution of 800 mg
• methanesulfonamide of formula Na [Si (CH 3 ) 3 NSO 2 CF 3 ] in the diglyme at 125 °.
• the polymer is in the form of granules of
• the compound [CF3S ⁇ 2C (MgCl) 2S ⁇ 2CF2] 2CF2 is prepared from the acid fluoride
• reaction sequence is done in the same container ("one pot” synthesis) in ether
• a 4-trifluorovinyl-benzenesulfonyl fluoride polymer is prepared by
• cyclopentanone is spread using a template and the solvent is dried in dry air.
• polymer film obtained has a thickness of 24 microns. 100 cm 2 of this membrane are
• reaction medium (50:50 v / v).
• the reaction medium is maintained at 80 ° C for 10 hours and the sub-
• reaction products are eliminated by successive washings in THF, methanol and
• Example 7 The poly (4-trifluorovinyl-benzenesulfonyl fluoride) of Example 7 is spread in the form
• This assembly is placed in a
• the reactor is closed and kept at 115 ° C for 4 hours under
• FC-75® (3M, USA). The suspension is spread using a template on a strip
• the fluoropolymer is crosslinked by hot pressing at 100 Kg.cm "2 and 150 ° C for 1
• sulfonamide is obtained by treatment with a hydrochloric acid solution and rinsed.
• the sodium salt is obtained by immersion in a 10% solution of carbonate
• the membrane is placed in a reactor containing 100 ml
• the sulfonamide functions -SO 2 NH 2 are treated with a
• An experimental fuel cell is made from a membrane
• the experimental cell is tested with a hydrogen supply
• the open circuit voltage is 1.2 V and the curve
• platinum-ruthenium 50:50 allows the use as methanol fuel with a
• An experimental fuel cell is made from a membrane
• platinum from example 11 is applied on both sides of the membrane by screen printing
• the experimental fuel cell using this assembly has performances
• the electrolysis of sodium chloride is carried out in a cell with two
• DSA type (“dimension stable electrode") and made of titanium covered with a
• the membrane prepared according to Example 4 is used for the preparation
• the cathode is a
• cathodic is immersed in water. Faradic yield of ozone and 20%) under
• methoxyacetophenone is complete in 45 minutes at room temperature.
• the catalyst is removed by simple filtration and reusable.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Materials Engineering (AREA)
• Inorganic Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)
• Fuel Cell (AREA)
• Catalysts (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Separation Using Semi-Permeable Membranes (AREA)

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Citations (7)

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• 1999
  • 1999-01-29 DE DE69916715T patent/DE69916715T2/de not_active Expired - Lifetime
  • 1999-01-29 JP JP53874999A patent/JP4477149B2/ja not_active Expired - Lifetime
  • 1999-01-29 WO PCT/CA1999/000078 patent/WO1999038897A1/fr not_active Ceased
  • 1999-01-29 DE DE69940033T patent/DE69940033D1/de not_active Expired - Lifetime
  • 1999-01-29 EP EP03024852A patent/EP1400539B1/fr not_active Expired - Lifetime
  • 1999-01-29 EP EP99902478A patent/EP0973809B1/fr not_active Expired - Lifetime
  • 1999-09-07 US US09/390,648 patent/US6670424B1/en not_active Expired - Lifetime
• 2001
  • 2001-07-18 US US09/906,702 patent/US20020002240A1/en not_active Abandoned
• 2002
  • 2002-03-08 US US10/094,047 patent/US6649703B2/en not_active Expired - Lifetime
• 2003
  • 2003-05-14 US US10/813,692 patent/US7034082B2/en not_active Expired - Lifetime
• 2006
  • 2006-04-25 US US11/380,133 patent/US7674560B2/en not_active Expired - Fee Related

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