WO2007032047A1 - 再生樹脂の製造方法、再生樹脂、樹脂組成物の処理回収物、再生樹脂組成物および樹脂組成物の再生方法 - Google Patents
再生樹脂の製造方法、再生樹脂、樹脂組成物の処理回収物、再生樹脂組成物および樹脂組成物の再生方法 Download PDFInfo
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- 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
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- 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
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- 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
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- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
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- 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
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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- 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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- 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
- Recycled resin production method recycled resin, treated and recovered resin composition, recycled resin composition and resin composition regeneration method
- the present invention relates to a method for producing a recycled resin, a recycled resin, a treated and recovered product of a resin composition, a recycled resin composition, and a method for recycling a resin composition.
- thermosetting resins are widely used as materials for electrical and electronic parts, automobile parts and the like because they exhibit excellent electrical insulation and heat resistance and mechanical strength. Once a thermosetting resin is cured, it is not softened or melted by heat and does not dissolve in a solvent. Therefore, it is technically difficult to regenerate a valuable chemical raw material from the cured product.
- the necessity of environmental conservation and the establishment of a resource recycling society has been studied. Recently, various studies have been conducted on the recycling of thermosetting resins.
- Patent Document 1 discloses that a phenol resin is dissolved in phenol, which is a constituent monomer of a resin, and decomposed to a low molecular weight compound such as phenol.
- a technique for recovering the material is disclosed.
- Patent Document 2 discloses a technique for decomposing and recovering a supercritical or subcritical alcohol by contacting it with a phenol resin, and further recovering the phenol resin from the recovered phenol by reaction with formaldehyde. It is described that it can be generated.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-054138
- Patent Document 2 Japanese Patent Laid-Open No. 2001-055468
- Patent Document 1 an emphasis is placed on recovering the organic filler, and the optimum conditions for decomposing and recovering the thermosetting resin such as phenol resin are not mentioned.
- Patent Document 2 although the constituent monomer, phenol, is decomposed, supercritical or subcritical alcohol reacts with phenol. Often, substituted phenol is recovered. For this reason, the phenol resin obtained by using the recovered monomer is not stable in quality, so its use may be limited.
- the present invention relates to a method for producing a recycled resin capable of efficiently obtaining a recycled resin that can be reused from a resin composition containing a used thermosetting resin, a recycled resin obtained by this production method, and It is an object of the present invention to provide a treated and recovered product of a resin composition, and a method and a recycled resin composition for recycling and treating these recycled resin and resin composition.
- the inventor of the present invention uses a monomer constituting the thermosetting resin to be decomposed or a derivative thereof (hereinafter sometimes simply referred to as “constitutive monomers”) as a solvent. Is obtained under the condition that the oligomer in the first recovered product has a certain molecular weight distribution and is obtained using the oligomer in the first recovered product. The inventors have found that the recycled resin has a stable quality, and have completed the present invention.
- the present invention provides:
- thermosetting resin composition containing the thermosetting resin in a supercritical or subcritical solvent containing a monomer constituting the thermosetting resin or a derivative thereof as an essential component
- a method for producing a recycled resin comprising a second step of adding and processing a polyfunctional compound
- the second step includes a component capable of reacting with the polyfunctional compound contained in the first recovered product in the first step, and the polyfunctional compound.
- the first step is performed in a temperature range of 100 ° C. or higher and 500 ° C. or lower. Manufacturing method
- the first step The process for producing a recycled resin, which is performed in a pressure range of IMPa to 60 MPa,
- the second process is performed in a temperature range equal to or lower than the temperature of the first step.
- the polyfunctional compound is added in an amount of 100% by weight of the first recovered oligomer obtained in the first step. 1 part by weight or more and 50 parts by weight or less of a recycled resin production method,
- thermosetting resin is selected from among phenol resin, epoxy resin, melamine resin, and urea resin.
- thermosetting resin contains a phenol resin
- a treated and recovered product of a resin composition comprising a residue other than the resin component obtained by the method for producing a recycled resin according to any one of (1) to (: 12),
- the residue is an undecomposed resin component of the resin composition containing the thermosetting resin, a polymerized carbonized product of the resin composition, Resin composition containing one or more selected from fillers contained in the resin composition Processed and recovered materials,
- a reusable recycled resin can be efficiently obtained from a resin composition containing a used thermosetting resin. Furthermore, the obtained recycled resin and / or the processed and recovered product of the resin composition can be recycled as a raw material for the recycled resin composition.
- molded products using recycled resin compositions made from recycled resin and resin composition treated materials are more curable and have a higher bending strength and bending strength than molded products obtained by conventional recycling methods. Good mechanical strength such as elastic modulus.
- the method for producing a recycled resin according to the present embodiment includes a supercritical or subcritical, which contains, as an essential component, constituent monomers constituting the thermosetting resin in the treatment of the resin composition containing the thermosetting resin.
- a used resin composition having a first step of decomposing a resin composition containing a thermosetting resin in a solvent in a state and a second step of adding a polyfunctional compound for treatment.
- a reusable recycled resin can be obtained efficiently.
- the recycled resin and / or the processed and recovered product of the resin composition obtained by the method for producing the recycled resin is applied to a method for recycling a resin composition that is reused as a raw material for the recycled resin composition.
- a recycled resin composition is obtained.
- the treatment of the resin composition in the present embodiment includes treatment by chemical decomposition and / or treatment by physical solubilization.
- the resin composition containing the thermosetting resin to be treated in the present embodiment is a cured resin, a non-cured resin.
- a cured or semi-cured resin, a varnish containing these resins, or the like may be included.
- inorganic fillers such as silica fine particles and glass fibers, molding materials or molded articles containing organic fillers such as wood powder, inorganic bases such as glass woven fabrics and glass nonwoven fabrics.
- Printed circuit obtained by processing laminates made of organic materials such as wood, paper, cloth, etc., metal-laminated laminates made by laminating metal foils such as copper foil, and copper-clad laminates
- a thermosetting resin product such as a plate may also be included.
- thermosetting resin applied to the present embodiment is not particularly limited, but phenol resin, epoxy resin, melamine resin, and urea resin can be particularly effectively applied. Furthermore, the strength S including a phenol resin S is more preferable.
- phenolic resins examples include novolak-type phenolic resins such as phenol novolak resin, cresol novolac resin, bisphenol A novolak resin; Examples thereof include resol type phenol resins such as modified oil-modified resin phenol resins.
- the shape and size of the resin composition are not restricted in particular, considering the cost and decomposition rate required for the powdered rice cake.
- the particle diameter is 1000 ⁇ or less, preferably 500 ⁇ or less, and more preferably 250 / im or less.
- Step of decomposing a resin composition containing a thermosetting resin (first step)
- thermosetting resin a resin composition containing a thermosetting resin is heated and pressurized in a supercritical or subcritical solvent containing the constituent monomers of the thermosetting resin as essential components.
- the first recovered material is obtained by decomposition.
- the constituent monomers of the thermosetting resin used as a solvent in the present embodiment include phenol compounds, urea compounds, urea, melamine compounds, and these monomers that are usually used as monomers of phenol resins, epoxy resins, urea resins, and melamine resins. And derivatives thereof.
- Examples of such constituent monomers include a small amount of hydrogen bonded to carbon of the aromatic ring. Both of them are substituted with a hydroxyl group, and a phenol compound that functions as a solvent in a supercritical or subcritical state alone or as a mixture with another solvent and can decompose and / or solubilize the resin composition.
- a phenol compound that functions as a solvent in a supercritical or subcritical state alone or as a mixture with another solvent and can decompose and / or solubilize the resin composition.
- mononuclear phenol compounds such as phenol, cresol, xylenol, resorcin, and alkyl-substituted phenol, or naphthol compounds such as 1_naphthol and 2_naphthol are preferably used.
- phenol is preferred from the viewpoint of cost and the effect on the decomposition reaction.
- examples of these constituent monomers include melamine compounds.
- a compound in which an amino amine group such as melamine or acetoguanamine or benzoguanamine is substituted with another functional group is preferably used.
- constituent monomers one or a combination of two or more of these can be used.
- the constituent monomers may include those obtained by separating and purifying the resin composition after decomposing the resin composition by carrying out the recycled resin production method of the present embodiment.
- examples of the other solvent include water, alcohols such as methanol and ethanol, ethylene glycol, propylene glycol, and the like. Any solvent that can be used as a solvent in normal chemical reactions, such as glycols, ketones, ethers, esters, organic acids, and acid anhydrides, can be used. Also, multiple solvents can be used. May be. Of these solvents, water is preferable because of its effect on the decomposition reaction and availability.
- the mixing ratio of the other solvent to the constituent monomers is preferably 1 to 500 parts by weight of the other solvent mixed with 100 parts by weight of the constituent monomers. The ratio is 5 to 50 parts by weight of the other solvent with respect to 100 parts by weight of the monomers.
- the use ratio of the solvent containing the constituent monomers of the thermosetting resin as an essential component is preferably in the range of 50 to 1000 parts by weight with respect to 100 parts by weight of the resin composition. More preferably, it is in the range of 100 to 400 parts by weight. If the proportion of the solvent used is too small, it may be difficult to cause the decomposition reaction of the resin composition to proceed smoothly. Conversely, if the amount is too large, the amount of heat required to heat the solvent will increase and energy consumption will increase. However, when the proportion of the solvent used is within the above range, the balance between the smoothness of the decomposition reaction and the suppression of energy consumption is excellent. [0024] (b) Processing conditions
- the decomposition treatment conditions in the present embodiment can be adjusted mainly by temperature and pressure as long as the solvent containing the constituent monomers as an essential component is in a supercritical or subcritical state.
- This temperature is usually 100 to 500.
- C range force S is preferred, more preferably in the range of 200-450 ° C. If the temperature is too low, the decomposition rate of the resin composition may decrease, and processing in a short time may be difficult. On the other hand, if the temperature is too high, side reactions such as thermal decomposition and dehydration may occur. Because the chemical structure of the recovered material in 1 may change, it may be difficult to reuse the first recovered material as a chemical raw material. The balance of suppression of side reactions will be excellent.
- the pressure is usually in the range of 1 to 60 MPa, more preferably 2 to 40 MPa. If the pressure is too low, the solvent will be in the vapor or gas state in the supercritical or subcritical state, so the decomposition rate will decrease, and the process in the first step may be difficult. On the other hand, if it is too high, equipment that can be operated under harsher conditions will be required, and the energy required to maintain high pressure will increase, but on the other hand, the decomposition rate will hardly improve and no special effect will be obtained. In some cases, when the pressure is within the above range, the balance between maintaining a high decomposition rate and suppressing energy consumption is excellent.
- the first step is continued until the molecular weight distribution (Mw / Mn) of the oligomer contained in the first recovered product generated by decomposing the resin composition reaches a certain value.
- the reaction time is:! To 60 minutes, preferably about 3 to 30 minutes.
- the molecular weight distribution (Mw / Mn) of the oligomer at the end of the first step is preferably in the range of 1.0 or more and 3.0 or less, more preferably 1.0 or more and 2.0 or less. Range.
- Mw / Mn molecular weight distribution
- the molecular weight distribution (MwZMn) of the oligomer at the end of the first step is preferably measured using gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- the separation column is two Tosoh TSKgel GMHXL, Two TSKgel G2000HXL are used, tetrahydrofuran is used as the eluent, a calibration curve is obtained in terms of polystyrene, a differential refractometer is used as the detector, the flow rate is 1 mlZ, and the temperature is 40 ° C. It is done.
- the first step in the present embodiment is preferably performed in the presence of a basic catalyst from the viewpoint of promoting the treatment speed.
- the basic catalyst in that case is not particularly limited. For example, it is equivalent to Bronsted base 'Lewis base' or natural inorganic 'organic compound', synthetic inorganic 'organic compound, or metal oxide by hydration reaction. The compound which shows the effect of these is mentioned, These 1 type (s) or 2 or more types can be used.
- the polyfunctional compound is added in a heat and pressure treatment container in some cases, and a polymerization point with the polyfunctional compound contained in the first recovered product obtained in the first step is obtained.
- the reaction component By reacting the reaction component with the polyfunctional compound, the oligomer contained in the first recovered product is increased in molecular weight.
- the conventional resin composition is regenerated, it is decomposed into monomers. Therefore, when it is reused as a resin composition, it is necessary to perform another polymerization reaction.
- the amount of polyfunctional compounds added in addition to the amount of molecules, and other reaction conditions it is possible to obtain a high-value-added recycled resin that is easy to reuse. .
- the polyfunctional compound used in the present embodiment reacts with the oligomer contained in the first recovered product obtained in the first step and the constituent monomers constituting Z or the thermosetting resin, thereby converting the oligomer into a high molecular weight. It is a compound that can be converted into a compound.
- Examples of such polyfunctional compounds include aldehyde compounds, and among them, formaldehyde compounds are preferably used.
- Preferred examples of the formaldehyde compound include formaldehyde, paraform, trioxane, formaldehyde derivative compounds such as hexamethylenetetramine, and aqueous solutions thereof. One or more of these may be used. Used.
- the usage ratio of the polyfunctional compound to be added is 1 part by weight or more with respect to 100 parts by weight of the oligomer contained in the first recovered product obtained in the first step.
- the amount is preferably 2 parts by weight or less and more preferably 25 parts by weight or less. If the amount of polyfunctional compound used is too small, the oligomeric high molecular weight reaction may proceed, and if too much, the product obtained by the oligomeric high molecular weight reaction proceeds. In some cases, however, the recovery efficiency of the recycled resin may be lowered.
- the treatment conditions with the polyfunctional compound in this embodiment can be adjusted mainly by temperature and pressure.
- the temperature under the treatment conditions with the polyfunctional compound is usually 100 ° C or more and preferably the temperature of the first step, more preferably 150 ° C or more and 200 ° C or less. If the treatment temperature is too high, the rate of the high molecular weight reaction may be too high, which may promote gelation of the recycled resin component. Conversely, if the treatment temperature is too low, the high molecular weight of the recycled resin may be reduced in a short time. However, when the reaction temperature is within the above range, the reaction can be carried out at a high molecular weight rate so fast that gelling does not accelerate.
- the pressure under the treatment conditions with the polyfunctional compound is usually preferably not less than atmospheric pressure and not more than the pressure in the first step, more preferably not less than atmospheric pressure and not more than 5 MPa. If the treatment pressure is too high, the speed of high molecular weight may be too high, and the gelation of the resin component may be promoted. In some cases, there is an excellent balance between maintaining the decomposition rate as fast as not to gel and suppressing energy consumption.
- the atmosphere of the second step can be selected from either an open system, a sealed system or an air system, or an inert gas atmosphere such as nitrogen.
- the treatment time for the second step can be adjusted in the range of :! to 60 minutes, but it is usually preferable to set it for about 3 to 30 minutes.
- thermosetting resin a novolak type phenol resin in which the nuclei of the phenol skeleton are bonded by a methylene bond
- thermosetting resin a melamine resin in which the melamine skeleton nuclei are bonded by a methylene bond
- thermosetting resin is a urea resin
- a urea resin in which the nucleus of the urea skeleton is bonded by a methylene bond is exemplified.
- thermosetting resin is an epoxy resin
- a compound having a structure in which the nuclei of the main skeleton of the epoxy resin are bonded by a methylene bond such as bisphenol A, bisphenol F, phenol novolac resin, and creso novolac resin.
- epichlorohydrin is further added to the regenerated resin obtained from the epoxy resin and allowed to react
- a compound having a structure in which the regenerated resin is converted to an epoxy is exemplified.
- the raw thermosetting resin contains phenol resin, melamine resin, urea resin, or epoxy resin
- examples include a structure in which nuclei are copolymerized with methylene bonds.
- these chemical structures are examples, and the chemical structure of the obtained recycled resin is not limited at all.
- the regenerated resin thus obtained usually has a molecular weight of 200 to 100,000, and the molecular weight distribution (Mw / Mn) is preferably in the range of 2.0 to 15 and more preferably. Is in the range of 3.0 to 10.
- the molecular weight of the main component of the recycled resin means the weight average molecular weight (Mw).
- the molecular weight of 200 to 100,000 is the same as that of the chemical raw material (prepolymer) used in the production of the resin composition containing the thermosetting resin. Therefore, purification should be performed as necessary. Can be reused as a prepolymer.
- having a resin component having a molecular weight of 200 to 100,000 as a main component means that the resin component having the molecular weight shown here is contained in an amount of 50% by weight or more. Resin components with a molecular weight exceeding 100,000 are also included.
- the resin component having a molecular weight of 200 to 100,000 is about 2 to 1,000 nuclei of the raw material monomer in the case of a normal thermosetting resin.
- the compound mainly composed of the resin component having a molecular weight of 200 to 100,000 is not only a component obtained from the thermosetting resin in the resin composition, but also an organic filler contained in the resin composition. In some cases, it may contain components obtained from the substrate.
- the recycled resin can be reused as a raw material of the recycled resin composition after separating the solvent, the residue, and the like from those treated in the second step. Examples of this separation method include, but are not limited to, methods such as cyclone, filtration, and gravity sedimentation that are used in ordinary solid-liquid separation.
- a mixture containing a recycled resin mainly composed of a resin component having a molecular weight of 200 to 100,000 obtained by the treatment in the second step and a treatment recovered product of a resin composition described later is organically used. After diluting with a solvent, you may perform solid-liquid separation operations such as cyclone filtration and gravity sedimentation.
- the constituent monomers of the thermosetting resin which is an unreacted solvent
- the regenerated resin mainly composed of the resin component having a molecular weight of 200 to 100,000 is subjected to a method such as distillation or extraction to separate and recover the constituent monomers of the resin and reuse it as a solvent. Can do. In reusing them, resin constituent monomers and water may be newly added as necessary.
- the method for separating the unreacted solvent is not particularly limited, and it is also possible to use a method of deviation or misalignment such as flash distillation, vacuum distillation or solvent extraction.
- the obtained recycled resin contains a small amount of an unreacted reaction solvent such as a resin constituent monomer and water. Also good.
- the treated and recovered product of the resin composition of the present embodiment corresponds to a residue other than the recycled resin component obtained by the method of the above embodiment, and the resin composition containing the thermosetting resin is not yet obtained.
- examples of such fillers include inorganic fillers such as calcium hydroxide, calcium carbonate, magnesium oxide, talc, silica and alumina.
- the regenerated resin according to the embodiment is used.
- Recycled resin and / or thermosetting resin treated and recovered products obtained by the above production method are each used alone or mixed and reused as a raw material for a new recycled resin composition.
- the recycled resin and Z or a processed and recovered product of the resin composition are mixed with other raw materials and are known.
- only recycled resin recovered without using raw materials corresponding to new recycled resin and resin composition treated recovered materials may be used as raw materials. It may be used in combination with chemical raw materials and / or fillers.
- the content of the recycled resin and / or the processed and recovered product of the resin composition to be reused is not particularly limited, but is preferably 2 to 80% by weight with respect to the entire new thermosetting resin molding material. Is 5-60% by weight.
- the chemical raw material used in combination is not particularly limited.
- a novolac type phenol resin a resol type phenol is used.
- Resins such as resin, epoxy resin, melamine resin and urea resin are listed.
- hexamethylenetetramine is usually used as a curing agent.
- the force of hexamethylenetetramine is preferably 10 to 25 parts by weight with respect to a total of 100 parts by weight of the recycled resin and the novolak type phenolic resin, as in the case of a normal thermosetting resin molding material.
- the total content of the recycled resin and the novolak type phenol resin is 20 to 80% by weight with respect to the entire thermosetting resin molding material, including hexamethylenetetramine as a curing agent. More preferably, it is 30 to 60% by weight.
- magnesium oxide, calcium hydroxide, or the like can be used as a curing aid as necessary.
- the filler used in combination is not particularly limited, but is a normal thermosetting Inorganic base material and / or organic base material used as a filler Can be used.
- the inorganic substrate include glass fiber, calcium carbonate, calcined clay, talc, silica, diatomaceous earth, alumina, and magnesium oxide. These inorganic base materials can be selected as necessary depending on the use of the molded product.
- the organic substrate include wood powder, pulp, plywood powder, paper pulverized powder, and cloth pulverized powder.
- a resin composition a cured product of phenol resin molding material (containing phenol resin and filler: PM-8200 manufactured by Sumitomo Bakelite Co., Ltd.) is pulverized and sieved to a particle size of 250 ⁇ m or less What was adjusted to was used.
- the molecular weight distribution (MwZMn) of the oligomer contained in the first recovered material obtained was measured from the time when the above cured product started to dissolve in phenol, and the molecular weight distribution became constant after the molecular weight distribution became constant. One process was completed.
- the molecular weight distribution (Mw / Mn) of the oligomer at this time was 1.5.
- the molecular weight distribution (MwZMn) of the oligomer component was measured using gel permeation chromatography (GPC). The separation column at this time is Tosoh TSKgel
- Tetrahydrofuran is used as the eluent
- the calibration curve is obtained in terms of polystyrene
- the detector uses a differential refractometer
- the flow rate is 1 ml / min
- the temperature is 40 ° C. It was.
- the amount of oligomer recovered after the completion of the first step was 8 lg when the oligomer was quantified by the above GPC analysis.
- honoremarin containing 37% honoremuanolide
- the reactor internal pressure set to 0. IMPa. 6 g was injected and held for 20 minutes, and after the treatment with the polyfunctional compound according to the second step, it was air-cooled and returned to room temperature and normal pressure. From the mixture of the product obtained in the second step and the unreacted solvent, the solvent (phenol, water) was separated by heating under normal pressure and reduced pressure to obtain 150 g of a recovered product.
- This recovered material was dissolved in tetrahydrofuran (THF), and then filtered through a filter having a pore size of 1. O xm to obtain a THF soluble component.
- THF insoluble residue remaining on the filter after filtration was weighed after drying at 100 ° C. for 12 hours.
- THF-insoluble residue was calcium hydroxide added as a basic catalyst with the inorganic filler in the cured product, and the rest of the recovered product was almost 100% without gelation. % was confirmed to be THF soluble.
- the product obtained from this THF-soluble component was analyzed by gas chromatography (detector FID: flame ionization detector) (GC—FID). There were almost no by-products such as xylenol, trimethylphenol, and xanthenes other than remaining in the reaction.
- the number average molecular weight (Mn) and the weight average molecular weight (Mw) of the product obtained from the THF-soluble matter were measured using gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- Tosoh TSKgel GMHXL and TSKgel G2000HXL are used as separation columns
- tetrahydrofuran is used as an eluent
- a calibration curve is converted to polystyrene
- a differential refractometer is used as a detector
- a flow rate is 1 ml / min
- a temperature is 40 ° C. It was.
- the recovered product obtained from the THF-soluble component was a resin component of Mn: 1,000 and Mw: 5, 100, and a recycled resin was detected.
- the above recycled resin 43 parts by weight, hexamethylenetetramine (Wako Pure Chemicals, special grade): 7 parts by weight, wood flour: 40 parts by weight, calcium carbonate (Wako Pure Chemicals): 10 parts by weight
- the parts were dry mixed with a cooking mill (manufactured by Matsushita Electric Industrial Co., Ltd., fiber mixer) to obtain a phenol resin molding material.
- This was molded by a press molding machine (temperature: 175 ° C., pressure: 10 MPa, molding time: 3 minutes) to prepare a specimen having a bending strength and a flexural modulus.
- the bending strength and flexural modulus were measured according to JIS-K6911 “General Test Method for Thermosetting Plastics”. As a result, a bending strength of 120 MPa and a flexural modulus of 8,000 MPa were obtained.
- Example 1 except that the treatment temperature in the second step was set to 100 ° C., the treatment was performed in the same manner as in Example 1 to obtain a recycled phenolic resin molding material.
- the results are summarized in Table 1.
- Example 1 except that the treatment temperature in the second step was 250 ° C., the treatment was performed in the same manner as in Example 1 to obtain a recycled phenolic resin molding material. The results are summarized in Table 1.
- Example 1 treatment was performed in the same manner as in Example 1 except that the amount of formalin injected in the second step was changed from 4.6 g to 2.3 g, to obtain a recycled phenolic resin molding material.
- the results are summarized in Table 1.
- Example 1 except that the amount of formalin injected in the second step was changed to 4.6 g force and 57.5 g, a treatment was performed in the same manner as in Example 1 to obtain a recycled phenolic resin molding material. The results are summarized in Table 1.
- Example 1 except that paraform 1.7 g was used instead of formalin 4.6 g in the second step, the treatment was performed in the same manner as in Example 1, and the recycled phenolic resin molding material was obtained. Obtained. The results are summarized in Table 1.
- Example 1 instead of formalin 4.6 g in the second step, treatment was performed in the same manner as in Example 1 except that 1.7 g of trioxane was used, and a recycled phenolic resin molding material was obtained. .
- Table 1 The results are summarized in Table 1.
- Example 1 the same procedure as in Example 1 was performed, except that 1.7 g of hexamethylenetetramine (HMTA) was used instead of formalin 4.6 g in the second step. A recycled phenolic resin molding material was obtained. The results are summarized in Table 1.
- HMTA hexamethylenetetramine
- Example 1 the same procedure as in Example 1 was used, except that a solid residue was separated from the treated recovered material in the same manner, and a recycled resin that was treated under the same conditions after separation was used. A recycled phenolic resin molding material was obtained. The results are summarized in Table 1.
- Example 1 instead of 10 g of calcium carbonate as an inorganic filler, recycled phenolic resin molding was performed in the same manner as in Example 1 except that 1 Og of the solid residue component of the recovered material obtained in Example 1 was used. Obtained material. The results are summarized in Table 1.
- Example 1 treatment was performed in the same manner as in Example 1 except that the amount of formalin injected in the second step was changed from 4.6 g to 69 g, to obtain a recycled phenolic resin molding material.
- the results are summarized in Table 1.
- Example 1 a regenerated phenol resin molding material was obtained in the same manner as in Example 1 except that calcium hydroxide as a basic catalyst was not added in the first step. The results are summarized in Table 1.
- Example 1 as a resin composition to be processed, an epoxy resin for semiconductor encapsulation Except for using 58.3 g of molding material (orthocresol novolac type epoxy resin cured with novolac type phenolic resin, including silica: EME-630 0H manufactured by Sumitomo Bakelite Co., Ltd.) The treatment was performed in the same manner as in Example 1 to obtain a resin component: 12 Og.
- molding material orthocresol novolac type epoxy resin cured with novolac type phenolic resin, including silica: EME-630 0H manufactured by Sumitomo Bakelite Co., Ltd.
- Example 1 In Example 1, except that the second step was not provided, processing was performed in the same manner as in Example 1 to obtain a recycled phenolic resin molding material. The results are summarized in Table 1.
- Example 1 formalin injection, which was performed in the second step, was performed in the first step to obtain a recycled phenolic resin molding material. The results are summarized in Table 1.
- the curability, bending strength and elastic modulus of the molded product using the recycled resin composition starting from the first recovered material obtained in the first step are It can be seen that this is an improvement over that of the conventional method.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Catalysts (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/991,729 US7851514B2 (en) | 2005-09-12 | 2005-09-12 | Process for producing regenerated resin, regenerated resin, processing recovered matter from resin composition, regenerated resin composition and method of regenerating resin composition |
JP2007535330A JP5007671B2 (ja) | 2005-09-12 | 2005-09-12 | 再生樹脂の製造方法 |
EP05782364.3A EP1956042B1 (en) | 2005-09-12 | 2005-09-12 | Process for producing regenerated resin, regenerated resin, processing recovered matter from resin composition, regenerated resin composition and method of regenerating resin composition |
KR20087008612A KR101226414B1 (ko) | 2005-09-12 | 2005-09-12 | 재생 수지의 제조 방법, 재생 수지, 수지 조성물의 처리회수물, 재생 수지 조성물 및 수지 조성물의 재생 방법 |
CA 2622117 CA2622117C (en) | 2005-09-12 | 2005-09-12 | Process for producing regenerated resin, regenerated resin, processing recovered matter from resin composition, regenerated resin composition and method of regenerating resin composition |
PCT/JP2005/016710 WO2007032047A1 (ja) | 2005-09-12 | 2005-09-12 | 再生樹脂の製造方法、再生樹脂、樹脂組成物の処理回収物、再生樹脂組成物および樹脂組成物の再生方法 |
CN2005800518804A CN101291980B (zh) | 2005-09-12 | 2005-09-12 | 再生树脂的生产工艺、再生树脂、树脂组合物的处理回收物、再生树脂组合物及再生方法 |
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PCT/JP2005/016710 WO2007032047A1 (ja) | 2005-09-12 | 2005-09-12 | 再生樹脂の製造方法、再生樹脂、樹脂組成物の処理回収物、再生樹脂組成物および樹脂組成物の再生方法 |
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US (1) | US7851514B2 (ja) |
EP (1) | EP1956042B1 (ja) |
JP (1) | JP5007671B2 (ja) |
KR (1) | KR101226414B1 (ja) |
CN (1) | CN101291980B (ja) |
CA (1) | CA2622117C (ja) |
WO (1) | WO2007032047A1 (ja) |
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WO2010029733A1 (ja) | 2008-09-12 | 2010-03-18 | 住友ベークライト株式会社 | 高分子材料の分解処理方法、再生樹脂の製造方法、無機充填材の回収方法 |
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JP5854466B2 (ja) * | 2012-01-10 | 2016-02-09 | 学校法人帝京大学 | 高温・高圧メタノールによる磁気テープのケミカルリサイクル方法 |
JP6422666B2 (ja) * | 2014-04-25 | 2018-11-14 | 日鉄ケミカル&マテリアル株式会社 | 狭分散フェノールノボラック樹脂の製造方法、及びその製造方法から得られる狭分散フェノールノボラック樹脂 |
TWI744750B (zh) * | 2019-12-23 | 2021-11-01 | 財團法人工業技術研究院 | 熱固型樹脂的降解方法、所使用的觸媒組合物及所得的樹脂組成物 |
CN115181327A (zh) * | 2022-08-30 | 2022-10-14 | 湖北恒驰电子科技有限公司 | 一种亚临界技术回收废弃多相挠性覆铜板的方法 |
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JP2003096233A (ja) * | 2001-09-21 | 2003-04-03 | Sumitomo Bakelite Co Ltd | 熱硬化性樹脂の分解処理方法およびリサイクル方法 |
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JP2005126667A (ja) * | 2003-03-19 | 2005-05-19 | Sumitomo Bakelite Co Ltd | プラスチックの処理方法、リサイクル方法、プラスチックの処理回収物およびリサイクルプラスチック |
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2005
- 2005-09-12 JP JP2007535330A patent/JP5007671B2/ja not_active Expired - Fee Related
- 2005-09-12 CN CN2005800518804A patent/CN101291980B/zh not_active Expired - Fee Related
- 2005-09-12 US US11/991,729 patent/US7851514B2/en not_active Expired - Fee Related
- 2005-09-12 CA CA 2622117 patent/CA2622117C/en not_active Expired - Fee Related
- 2005-09-12 EP EP05782364.3A patent/EP1956042B1/en not_active Not-in-force
- 2005-09-12 KR KR20087008612A patent/KR101226414B1/ko not_active IP Right Cessation
- 2005-09-12 WO PCT/JP2005/016710 patent/WO2007032047A1/ja active Application Filing
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JP2003096233A (ja) * | 2001-09-21 | 2003-04-03 | Sumitomo Bakelite Co Ltd | 熱硬化性樹脂の分解処理方法およびリサイクル方法 |
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JP2005126667A (ja) * | 2003-03-19 | 2005-05-19 | Sumitomo Bakelite Co Ltd | プラスチックの処理方法、リサイクル方法、プラスチックの処理回収物およびリサイクルプラスチック |
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WO2010029733A1 (ja) | 2008-09-12 | 2010-03-18 | 住友ベークライト株式会社 | 高分子材料の分解処理方法、再生樹脂の製造方法、無機充填材の回収方法 |
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US9085666B2 (en) | 2008-09-12 | 2015-07-21 | Sumitomo Bakelite Co., Ltd. | Method for decomposing polymer material, method for producing recycled resin, and method for recovering inorganic filler |
EP2987823A1 (en) | 2008-09-12 | 2016-02-24 | Sumitomo Bakelite Co., Ltd. | Method for recovering inorganic filler |
CN105778150A (zh) * | 2008-09-12 | 2016-07-20 | 住友电木株式会社 | 分解聚合物材料的方法、制备再生树脂的方法以及回收无机填料的方法 |
US9822209B2 (en) | 2008-09-12 | 2017-11-21 | Sumitomo Bakelite Co., Ltd. | Method for decomposing polymer material, method for producing recycled resin, and method for recovering inorganic filler |
Also Published As
Publication number | Publication date |
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CA2622117A1 (en) | 2007-03-22 |
EP1956042A1 (en) | 2008-08-13 |
KR101226414B1 (ko) | 2013-01-24 |
EP1956042A4 (en) | 2009-12-23 |
KR20080055906A (ko) | 2008-06-19 |
US20090318576A1 (en) | 2009-12-24 |
EP1956042B1 (en) | 2016-11-09 |
CN101291980B (zh) | 2012-04-04 |
CN101291980A (zh) | 2008-10-22 |
JPWO2007032047A1 (ja) | 2009-03-19 |
JP5007671B2 (ja) | 2012-08-22 |
US7851514B2 (en) | 2010-12-14 |
CA2622117C (en) | 2013-01-29 |
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