WO2002002680A1 - Procede de valorisation de materiaux composites et de polyethylene terephtalate - Google Patents
Procede de valorisation de materiaux composites et de polyethylene terephtalate Download PDFInfo
- Publication number
- WO2002002680A1 WO2002002680A1 PCT/FR2001/002186 FR0102186W WO0202680A1 WO 2002002680 A1 WO2002002680 A1 WO 2002002680A1 FR 0102186 W FR0102186 W FR 0102186W WO 0202680 A1 WO0202680 A1 WO 0202680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solvolysis
- polyethylene terephthalate
- composite materials
- materials
- composite
- Prior art date
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- FTLZQBDQTZDDGF-UHFFFAOYSA-N CNC1CC2OC2CC1 Chemical compound CNC1CC2OC2CC1 FTLZQBDQTZDDGF-UHFFFAOYSA-N 0.000 description 1
- SDICCMVQVPQXPB-UHFFFAOYSA-N O=C(C1C2C(C3)OC3CC2)[O]1C1CC2OC2CC1 Chemical compound O=C(C1C2C(C3)OC3CC2)[O]1C1CC2OC2CC1 SDICCMVQVPQXPB-UHFFFAOYSA-N 0.000 description 1
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
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
- C08J11/22—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
- C08J11/24—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to a process for recovering composite materials and polyethylene terephthalate. Such a method allows a new use of each of the constituent elements of the composite material and of the treated polyethylene terephthalate.
- composite material means any material comprising an organic matrix which is a thermosetting resin and at least one other component of a different nature.
- the composite materials which can be used in the process according to the invention are materials comprising a matrix of thermosetting resin which is reinforced with glass, boron, carbon or arid, and which can furthermore include metal plates.
- Composite materials are very widely used given their excellent mechanical and chemical resistance properties in many industries such as aeronautics, automotive, aerospace, construction, or civil engineering, especially in the manufacture of pipes transport of liquids and electronics, especially in electronic cards.
- the recycling of composites is a current concern of industrialists. Indeed, products made of composite materials were previously returned to public landfills. Currently, however, the number of landfills is constantly decreasing and the regulations relating to waste treatment are becoming more and more strict. It has therefore become imperative to develop methods for treating these composite materials.
- PET polyethylene terephthalate
- three main recovery methods have been proposed: by mechanical treatment; by pyrolysis; by solvolysis. Mechanical treatment consists of grinding the composite material which can then be used as reinforcement in new composite materials.
- Pyrolysis treatment uses heating to very high temperatures to transform the composite material into inorganic residues, oils and gases which can be very toxic.
- the reinforcing fibers can be recovered, however, their mechanical properties are reduced.
- the degradation products of the matrix of composite materials by glycolysis are essentially polyols.
- An interesting recycling route for these polyols would be the preparation of polyurethane foams.
- these polyols contain solvent in free form, the polyols recovered thus have a much too high hydroxyl index.
- polyethylene terephthalate there are different sources of polyethylene terephthalate waste.
- One of the main sources is that of beverage packaging.
- the polyethylene terephthalate recovered from this source includes many wastes, such as the stopper, the glue and the label of the packaging. Its recycling is however generally easier than that of composite materials although expensive.
- PET polyethylene terephthalate
- PET waste polyethylene terephthalate
- Polyols are thus obtained, the main application of which is the manufacture of rigid polyurethane foams after formulation and addition of isocyanate.
- the polyols obtained by simple glycolysis have defects.
- the inventors had the merit of finding, after long and in-depth studies, a process for recovering composite materials which consists in carrying out a solvolysis of the composite materials and of polyethylene terephthalate, optionally in the presence of a catalyst, and in separating the solvolysis product containing the degradation products of the matrix of composite materials and of polyethylene terephthalate of the other constituents of solid composite materials and of possible other impurities of polyethylene terephthalate.
- the process according to the invention makes it possible to separate the degradation products of the organic matrix of the composite from the various other components, in particular from all the reinforcing components and various metallic elements which may be present in the starting product. These reinforcing materials and metallic elements can be reused.
- the inventors have found that the solvolysate resulting from the solvolysis of composite materials and of polyethylene terephthalate is completely stable and suitable for the preparation of polyurethane foams, without resorting to an additional step. correction or modification of the solvolysate.
- solvolysate means the product resulting from solvolysis, that is to say the degradation products of the matrix and / or of the polyethylene terephthalate present in the solvent.
- solvolysis simultaneously conducts the solvolysis of the composite material and polyethylene terephthalate and the product is separated solvolysis containing degradation products of the composite matrix and the 'polyethylene terephthalate other constituents of composite materials and any other impurities.
- This embodiment makes it possible to carry out only one solvolysis step and only one separation step for the solid materials.
- the solvolysis of the composite material and of the polyethylene terephthalate can moreover be carried out in the same reactor.
- the solvolysis of the composite material is carried out, then the solvolysis product containing the degradation products of the matrix of the composite materials is separated from the other constituents of the composite materials, then we use the product of solvolysis containing the degradation products of the matrix of composite materials to conduct the solvolysis of polyethylene terephthalate.
- the solvolysis of the polyethylene terephthalate is first carried out, the solvolysis product containing the degradation products of the polyethylene terephthalate is then separated from any impurities in the polyethylene terephthalate, then uses the solvolysis product containing the degradation products of polyethylene terephthalate to conduct the solvolysis of composite materials.
- This embodiment has the advantage of providing a volume of polyethylene terephthalate (PET) solvolysate which is important for the solvolysis of composite materials.
- PET polyethylene terephthalate
- It also makes it possible to increase the boiling point of the reaction mixture. This induces a higher reaction temperature at atmospheric pressure and therefore increases the reaction rate.
- polyethylene terephthalate can contain other impurities originating in particular from stoppers, labels or adhesives used for the manufacture of bottles. These impurities must therefore be separated from the solvolysate.
- the method according to the invention thus has the advantage of recycling all the materials resulting from the solvolysis of the composite materials and of polyethylene terephthalate.
- glycolysis means the degradation reaction of the organic matrix under the action of a compound comprising at least two functions alcohol or comprising at least one alcohol function and also at least one innate function.
- the solvolysis is carried out using a reactive solvent which can be a polyalcohol or a monoalcohol, or any chemical reagent containing labile hydrogen atoms, such as amines, acids, etc.
- a reactive solvent which can be a polyalcohol or a monoalcohol, or any chemical reagent containing labile hydrogen atoms, such as amines, acids, etc.
- the process according to the invention is particularly suitable for the recovery of composite materials whose matrix is a thermosetting resin chosen from the group comprising epoxy resins, polyurethanes, unsaturated polyesters, optionally reinforced and / or deposited on or coating elements metal.
- the reinforcement consists of glass, carbon, aramid, etc., in the form of fibers, chips, fabric, nonwoven, etc.
- the method according to the invention is applied to composites based on epoxy resins, in particular epoxy resins containing internal ester bonds, such as certain industrial cycloaliphatic resins having the following formula:
- this process can also advantageously be applied to any other type of epoxy resin, in particular to those of the diglycidyl ether type of bisphenol A (DGEBA), bisepoxycyclohexylmethyladipate, epoxy novolacs, hardened by an acid anhydride, such as hexahydrophthalic anhydride , tetrahydrophthalic anhydride, ethyl nadic anhydride.
- DGEBA diglycidyl ether type of bisphenol A
- bisepoxycyclohexylmethyladipate bisepoxycyclohexylmethyladipate
- epoxy novolacs hardened by an acid anhydride, such as hexahydrophthalic anhydride , tetrahydrophthalic anhydride, ethyl nadic anhydride.
- the process can also be applied to any type of epoxy resin cured by any type of hardener, in particular amines such as in particular triethylenetetramine, or catalysts for the polymerization of the epoxide function.
- the. solvolysis is a glycolysis carried out with a solvent chosen from the group comprising glycols, such as ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, etc., polyphenols such as bisphenol A, amino alcohols such as monoethanolamine.
- the solvent is present in volume excess relative to the composite materials.
- the amount of solvent is that necessary for the composite material to be completely covered.
- a catalyst is chosen chosen from conventional transesterification catalysts, such as organometallic derivatives of titanium, such as tetrabutylorthotitanate, derivatives of transition metals, in particular of Zn, Mn, Co, etc., the alkali and alkaline earth metals associated with anions, Brônstedt base, such as hydroxides, oxides, carboxylates, amines, etc.
- the catalyst is used in an amount at least equal to 0.005%, preferably between 0.05% and 5% and more preferably still about 0.2 to 2% by weight of the total weight of the solvent and of the composite material to be treat.
- the amount of catalyst used is of course a function of the composite to be treated and the solvent used. There is no upper limit value. However, for obvious economic reasons, it will be preferable not to go beyond 5% by weight relative to the total weight of the solvent and of the composite material to be treated. An optimal amount is that allowing total degradation to be obtained in a relatively short time, preferably less than 10 hours.
- the process according to the invention is carried out using as reactive solvolysis solvent monoethanolamine; solvolysis can then be carried out without a catalyst since monoethanolamine has the advantage of self-catalyzing.
- the solvolysis reaction is carried out at high temperature and can advantageously be carried out at a temperature between 120 and 300 ° C, preferably between 170 and 250 ° C and more preferably still between 180 and 240 ° C and, more particularly advantageously for simplification purposes at the boiling point of the solvent.
- the process in accordance with the invention comprises the following successive steps consisting in: shredding the composite materials and the polyethylene terephthalate to be treated into pieces of a size less than a size of the order of a few tens of centimeters, react these pieces in an excess of solvent, optionally in the presence of a catalyst, with gentle stirring, at a temperature between 120 and 300 ° C. while
- the method according to the invention comprises the following successive steps consisting in: shredding the composite materials to be treated into pieces, preferably having a size less than a size of the order of a few tens of centimeters, reacting these pieces in an excess of solvent, optionally in the presence of a catalyst, with gentle stirring, at a temperature between 120 and 300 ° C for 0.5 to 12 hours, separating the solvolysis product from the solid materials, - sort the various solid materials in order to isolate the metals and / or the reinforcement materials for their recovery, optionally, rid the reinforcement materials of any organic matter by washing, spinning and drying, use the solvolysate resulting from the solvolysis of the composite materials for the solvolysis of polyethylene terephthalate.
- the method according to the invention comprises the following successive steps consisting in: shredding the polyethylene terephthalate to be treated into pieces, preferably having a size less than a size of the order of a few tens of centimeters, react these pieces in an excess of solvent, possibly in the presence of a catalyst, with gentle stirring, at a temperature between 120 and 300 ° C for 0.5 to 12 hours, separate the solvolysis product from any materials solids, use the solvolysate resulting from the solvolysis of polyethylene terephthalate for the solvolysis of the composite materials, separate the solvolysis product from the solid materials, sort the various solid materials in order to isolate the metals and / or the reinforcement materials for their recovery, optionally rid the reinforcement materials of any organic material by washing, ess storm and drying.
- this method is applied to composites comprising fibers as a material for reinforcement. Indeed, this process makes it possible to recover fibers which have not lost any of their mechanical properties and which can therefore be used in new rewarding applications.
- the method according to the invention also makes it possible to recover the solvolysate of composite materials and of polyethylene terephthalate, which essentially consists of polyols, to make polyurethane foams of entirely satisfactory quality.
- the method according to the invention therefore comprises an additional step of preparing a polyurethane foam from the solvolysis product containing the degradation products of the matrix of composite materials and of polyethylene terephthalate.
- the preparation of the polyurethane foam is carried out in a conventional manner, preferably from 1 to 1.1 equivalent (s) of isocyanate relative to the polyols recovered by the process according to the invention.
- the polyurethane foam obtained according to the invention has good dimensional stability.
- the process according to the invention is particularly useful for upgrading the water pipes of power plants, electronic cards, auto parts, materials used in the building industry.
- Example 1 Glycolysis of a resin based on bisphenol A diglycidyl ether cured by tetrahydrophthalic anhydride.
- This resin is characterized in that the average value of N is of the order of 0.15 and the quantity of resin necessary to provide one mole of epoxy equivalent (EE) is 187 g.
- This resin was cured with tetrahydrophthalic anhydride.
- BDMA amino benzyldimethylene
- Example 1a glycolysis in diethylene glycol
- Aggregates 1 to 2.5 mm in diameter are taken from the resin prepared above. 15 g of these aggregates are placed in 75 ml of diethylene glycol and 98 mg of tetrabutylorthotitanate are added as catalyst. After 3 hours of reaction at total reflux (245 °), the aggregates are completely dissolved.
- Aggregates 1 to 2.5 mm in diameter are taken from the resin prepared above. 15 g of these aggregates are placed in 75 ml of monoethanolamine and no catalyst is added.
- Example 2 Glycolysis of a resin based on bisphenol A diglycidyl ether cured by hexahydrophthalic anhydride.
- Example 2 The same resin as in Example 1 was used, however, it was cured using hexahydrophthalic anhydride. For this, 250.2 g of resin, 196.4 g of hexahydrophthalic anhydride and 2.6 g of benzyldimethylamine were used. This reactive mixture was poured onto a tray and a plate of average thickness 3mm was obtained. This plate was broken to obtain aggregates of different sizes that were separated by sieving to obtain the following lots: '
- tests 1 to 5 A first series of tests (tests 1 to 5) was carried out in different quantities of diethylene glycol in the presence of tetrabutylorthotitanate, then a second series of tests (tests 6 to 8) was carried out in monoethnolamine in the absence of catalyst .
- test 9 to 11 Three tests were then carried out (tests 9 to 11) by varying the amount of catalyst used. In these tests, 15 g of the resin of this example was used in the form of aggregates of 1-1, 25 mm placed in 75 ml of DEG.
- These tubes are made of epoxy resin sold by SEPMA under the name CIBA LY 556
- bisphenol A using a hardener of the anhydride type, they are reinforced by filament windings of glass fibers with a silane type sizing.
- the mixture was filtered. Two fractions were obtained: the glycolysate, a mixture of polyols and DEG, and the fibers soaked in the glycolysate.
- the fibers were washed with benzyl alcohol and then with acetone.
- the rinse filtrate was then mixed with the glycolysate after distilling off the methanol on a rotary evaporator.
- Resin identification 200 g of DGEBA were hardened with 28 g of triethylenetetramine (TETA) without catalyst, for 7 days at room temperature, then for 2 hours at 200 ° C.
- TETA triethylenetetramine
- This card is made up of several layers of epoxy resin reinforced with glass fibers. Between these layers are interposed copper sheets and other types of metals.
- This card (70.6g) has been cut into pieces.
- the pieces were introduced into a reactor with 353.5 g of DEG and 0.4 g of tetrabutylorthotitanate.
- the glycolysis was carried out at 245 ° C. for 12 h 30 min with gentle stirring at the start and then with stronger stirring in the middle of the reaction. During this reaction, various samples were taken in order to monitor this reaction.
- glycolysate obtained is a mixture rich in oligomers.
- UV analyzes show a gradual increase in absorbance at 278nm and 285nm. Between 2.55 and 8.30 h of reaction, the absorbance increased from 0.22 to 0.6.
- IR and UV analyzes show that the resin is rather of the aromatic type, probably of the family of DGEBA resins. However, this absorption could also come from a hardener of the aromatic type.
- the hardener is not an acid anhydride.
- glycolysate 1 glycolysate 1
- the metals were washed with methyl alcohol and then dried.
- glycolysate 2 was added to glycolysate 1.
- Glass fibers were manually separated from small pieces of metal which were added to those previously isolated. Glass fibers were mainly in the form of a mat, but also in the form of fabric.
- Glycolysates 1 and 2 were distilled and thus DEG and polyols were recovered.
- the initial composition is as follows: 100 g of hardened resin; - 159 g of DEG;
- Example 7 Preparation of a polyurethane foam from the polyols obtained in Example 6:
- a polyurethane foam is prepared from polyols obtained from Example 6.
- a polyurethane foam is prepared according to the same procedure from a polyol composition (referenced Polyol PET) having a functionality of 2.00, obtained by glycolysis / esterification of PET. After 4 days of maturation at room temperature, the foam is cut into cubes for characterization. This foam is referenced (GLY 23). The classic characteristics of these foams are measured, namely the time of cream (T cream), the time of thread (T thread) and the time out of tack (T tack). The characterization of the foams obtained is presented in table 4 below:
- the PET polyol is a polyol obtained from 96 g of PET, 97.5 g of DEG, 26.8 g of DPG, 29.2 g of adipic acid, 29.6 g of phthalic anhydride. It has a functionality of 2.00, a hydroxyl number of 290 and a storage stability of approximately 3 months. To obtain a functionality comparable to that of polyol ex. 6, it would have been necessary to add 10% by mass of glycerol.
- An aging test in the open air is conducted over a week to a year.
- the cut cubes of the foam (7) do not show any significant deformation, unlike those of the foam (GLY 23) which begin to deform. After one year, the cut cubes of the foam (7) do not show any significant deformation, on the other hand those of the foam (GLY 23) are strongly deformed. When subjected to a pressure of 0.27 kg / cm 2 with a temperature of 60 ° C, the foam cubes (7) exhibit limited deformation while those of the foam (GLY 23) are completely crushed.
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002216761A AU2002216761A1 (en) | 2000-07-06 | 2001-07-06 | Method for upgrading composite materials and polyethylene terephthalate |
CA 2414843 CA2414843A1 (fr) | 2000-07-06 | 2001-07-06 | Procede de valorisation de materiaux composites et de polyethylene terephtalate |
US10/332,117 US20040102533A1 (en) | 2000-07-06 | 2001-07-06 | Method for upgrading composite materials and polyethylene terephthalate |
JP2002507928A JP2004502811A (ja) | 2000-07-06 | 2001-07-06 | 複合材料およびポリエチレンテレフタレートの再利用方法 |
EP01984104A EP1299464A1 (fr) | 2000-07-06 | 2001-07-06 | Procede de valorisation de materiaux composites et de polyethylene terephtalate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0008845A FR2811246B1 (fr) | 2000-07-06 | 2000-07-06 | Procede de valorisation de materiaux composites |
FR00/08845 | 2000-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002002680A1 true WO2002002680A1 (fr) | 2002-01-10 |
Family
ID=8852211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/002186 WO2002002680A1 (fr) | 2000-07-06 | 2001-07-06 | Procede de valorisation de materiaux composites et de polyethylene terephtalate |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040102533A1 (fr) |
EP (1) | EP1299464A1 (fr) |
JP (1) | JP2004502811A (fr) |
AU (1) | AU2002216761A1 (fr) |
CA (1) | CA2414843A1 (fr) |
FR (1) | FR2811246B1 (fr) |
WO (1) | WO2002002680A1 (fr) |
Cited By (2)
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EP1950253A1 (fr) * | 2005-11-18 | 2008-07-30 | Bussan Nanotech Research Institute Inc. | Materiau composite recycle |
WO2017021574A1 (fr) * | 2015-08-06 | 2017-02-09 | Universidad De Alicante | Procédé de récupération de fibres inorganiques à température ambiante dans des matériaux à base de fibre-résine |
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FR2849854B1 (fr) * | 2003-01-09 | 2006-12-15 | Electricite De France | Procede de valorisation de dechets de materiaux a base de resine epoxyde. |
US20070197668A1 (en) * | 2006-02-20 | 2007-08-23 | Troy Polymers, Inc. | Process for preparing polyols |
US8245959B1 (en) * | 2009-06-30 | 2012-08-21 | Emc Corporation | Powered card and method of disposing of the same |
WO2012115984A2 (fr) | 2011-02-21 | 2012-08-30 | Felice Kristopher M | Dispersions de polyuréthane et leurs procédés de fabrication et d'utilisation |
KR101507696B1 (ko) | 2011-06-10 | 2015-04-07 | 크리스토퍼 엠. 펠리체 | 투명 코팅, 아크릴 코팅 |
US9896227B2 (en) * | 2013-04-04 | 2018-02-20 | Nader Nowzari | Beverage bottle with a resealable storage compartment |
FR3007412B1 (fr) * | 2013-06-20 | 2015-07-17 | Centre Nat Rech Scient | Procede de recuperation de fibres organiques a partir d'un materiau composite |
US9850400B2 (en) | 2014-08-20 | 2017-12-26 | Resinate Materials Group, Inc. | Digestion of keratin |
US9951171B2 (en) | 2014-08-20 | 2018-04-24 | Resinate Materials Group, Inc. | Polyester polyols from recycled polymers and waste streams |
EP3183286A4 (fr) | 2014-08-20 | 2018-08-22 | Resinate Materials Group, Inc. | Polyols de polyester issus de polymères recyclés et de flux de déchets |
US9580546B2 (en) | 2014-10-29 | 2017-02-28 | Resinate Materials Group, Inc. | Polymeric plasticizer compositions |
US9890243B2 (en) | 2014-10-29 | 2018-02-13 | Resinate Materials Group, Inc. | Polymeric plasticizer compositions |
KR20170110625A (ko) | 2015-01-30 | 2017-10-11 | 레지네이트 머티리얼스 그룹, 아이엔씨. | Pet 및 ptt의 재생 스트림 처리를 위한 통합 공정 |
KR101781835B1 (ko) | 2015-12-16 | 2017-09-28 | 한국과학기술연구원 | 전이금속염을 이용한 에폭시 수지 경화물의 해중합 방법 및 조성물 |
JP6491257B2 (ja) * | 2017-04-13 | 2019-03-27 | コリア・インスティテュート・オブ・サイエンス・アンド・テクノロジー | 遷移金属塩または遷移金属酸化物を用いたエポキシ樹脂硬化物の解重合のための方法及び組成物 |
CN110157038B (zh) * | 2019-04-11 | 2021-03-16 | 四川大学 | 一种含酯键高分子树脂的低温快速降解及分离的方法 |
EP3956280A1 (fr) * | 2019-04-15 | 2022-02-23 | LANXESS Deutschland GmbH | Procédé pour le recyclage de matières plastiques renforcées de fibres de verre |
CN112403408B (zh) * | 2020-08-20 | 2022-10-14 | 西安理工大学 | 基于pet降解产物的磁性微纳米材料及其制法和应用 |
EP4438782A1 (fr) * | 2023-03-27 | 2024-10-02 | Johns Manville | Produit en fibre de verre contenant des fibres de verre recyclées et procédé de recyclage de produits en fibre de verre |
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2000
- 2000-07-06 FR FR0008845A patent/FR2811246B1/fr not_active Expired - Fee Related
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2001
- 2001-07-06 AU AU2002216761A patent/AU2002216761A1/en not_active Abandoned
- 2001-07-06 WO PCT/FR2001/002186 patent/WO2002002680A1/fr not_active Application Discontinuation
- 2001-07-06 CA CA 2414843 patent/CA2414843A1/fr not_active Abandoned
- 2001-07-06 JP JP2002507928A patent/JP2004502811A/ja active Pending
- 2001-07-06 US US10/332,117 patent/US20040102533A1/en not_active Abandoned
- 2001-07-06 EP EP01984104A patent/EP1299464A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996016112A1 (fr) * | 1994-11-24 | 1996-05-30 | Seijo Bollin Hans Peter | Procede permettant de recycler des produits contenant de la resine epoxy |
EP0942070A1 (fr) * | 1998-03-13 | 1999-09-15 | Delphi Technologies, Inc. | Récupération de valeurs métalliques à partir de plaques IC en polyester par traitement dans une solution basique de polyalcools |
EP0953418A2 (fr) * | 1998-04-27 | 1999-11-03 | Matsushita Electric Industrial Co., Ltd. | Procédé et appareil pour le traitement de décomposition d'un article en résine thermodurcie |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1950253A1 (fr) * | 2005-11-18 | 2008-07-30 | Bussan Nanotech Research Institute Inc. | Materiau composite recycle |
EP1950253A4 (fr) * | 2005-11-18 | 2009-05-13 | Mitsui Bussan | Materiau composite recycle |
WO2017021574A1 (fr) * | 2015-08-06 | 2017-02-09 | Universidad De Alicante | Procédé de récupération de fibres inorganiques à température ambiante dans des matériaux à base de fibre-résine |
Also Published As
Publication number | Publication date |
---|---|
AU2002216761A1 (en) | 2002-01-14 |
US20040102533A1 (en) | 2004-05-27 |
FR2811246B1 (fr) | 2003-01-17 |
FR2811246A1 (fr) | 2002-01-11 |
JP2004502811A (ja) | 2004-01-29 |
EP1299464A1 (fr) | 2003-04-09 |
CA2414843A1 (fr) | 2002-01-10 |
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