JP2003160688A - Method for separating resin from laminated glass - Google Patents
Method for separating resin from laminated glassInfo
- Publication number
- JP2003160688A JP2003160688A JP2001360848A JP2001360848A JP2003160688A JP 2003160688 A JP2003160688 A JP 2003160688A JP 2001360848 A JP2001360848 A JP 2001360848A JP 2001360848 A JP2001360848 A JP 2001360848A JP 2003160688 A JP2003160688 A JP 2003160688A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- resin
- laminated glass
- recovered
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 27
- 239000011347 resin Substances 0.000 title claims abstract description 27
- 239000005340 laminated glass Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 33
- 239000003960 organic solvent Substances 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims description 14
- 239000012634 fragment Substances 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- 239000000243 solution Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 102100033040 Carbonic anhydrase 12 Human genes 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 101000867855 Homo sapiens Carbonic anhydrase 12 Proteins 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 101000935040 Homo sapiens Integrin beta-2 Proteins 0.000 description 1
- 102100025390 Integrin beta-2 Human genes 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- AAFFTDXPYADISO-UHFFFAOYSA-N cyclohexyne Chemical compound C1CCC#CC1 AAFFTDXPYADISO-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- 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
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
- C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0224—Screens, sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0293—Dissolving the materials in gases or liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
- B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
- B29K2709/08—Glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/778—Windows
- B29L2031/7782—Glazing
-
- 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
- C08J2329/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Joining Of Glass To Other Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車用及び建築
用の使用済み合わせガラスをガラスと中間膜に分離する
際に、中間膜に含まれる樹脂を再利用可能な形で回収す
る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recovering a resin contained in an interlayer film in a reusable form when separating used laminated glass for automobiles and buildings into glass and an interlayer film.
【０００２】[0002]
【従来の技術】近年、地球環境改善や資源の再利用化の
推進が唱えられ、建築物や車両等のスクラップから発生
する使用済み合わせガラスについても、ガラスと中間膜
とに分離し、これらを再利用する試みが行われている。2. Description of the Related Art In recent years, promotion of global environment improvement and recycling of resources has been advocated, and used laminated glass generated from scraps such as buildings and vehicles is also separated into glass and interlayer film. Attempts are being made to reuse it.
【０００３】例えば特許第３１３７５０４号では、合わ
せガラスから中間膜を分離する方法として、中間膜を水
槽に入れて攪拌機で回転させ、中間膜を膨潤させながら
水との速度差を特定条件として中間膜に剪断力を付与す
る方法が開示されている。For example, in Japanese Patent No. 3137504, as a method for separating an interlayer film from a laminated glass, the interlayer film is placed in a water tank and rotated by a stirrer, and the interlayer film is swollen while the speed difference with water is specified as a specific condition. A method of applying a shearing force to the is disclosed.
【０００４】さらに、特開平６−２１９７９３号公報で
は、合わせガラスを−１０℃以下に冷却して中間膜のガ
ラスとの接着力を低下させた後、この合わせガラスにハ
ンマー等で衝撃を与えてガラスを破砕すると同時に中間
膜を分離、回収する方法と装置が開示されている。Further, in Japanese Unexamined Patent Publication No. 6-219793, the laminated glass is cooled to −10 ° C. or lower to reduce the adhesive strength with the glass of the interlayer film, and then the laminated glass is impacted with a hammer or the like. A method and apparatus for crushing glass and separating and recovering an intermediate film at the same time are disclosed.
【０００５】しかしながら、これらの従来技術では回収
されたガラス部分の再利用は可能であるが、中間膜部分
についてはガラス破砕片が完全に除去されないため、そ
のまま中間膜として再利用するには品質上問題があり、
産業廃棄物として処分せざるを得ない状況にある。However, although the recovered glass portion can be reused by these conventional techniques, the glass fragments are not completely removed from the intermediate film portion, so that the intermediate film portion cannot be reused as an intermediate film without any improvement in quality. There is a problem,
There is no choice but to dispose of it as industrial waste.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、このような
現状に鑑みてなされたもので、自動車用及び建築用の使
用済み合わせガラスからガラスと中間膜を回収する際、
ガラス破砕片が付着した状態で回収された中間膜を、有
機溶剤に浸漬または溶解し、ガラス破砕片と樹脂分を再
利用可能な状態で分離する方法を提供するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when recovering glass and interlayer film from used laminated glass for automobiles and construction,
It is intended to provide a method for immersing or dissolving an intermediate film, which is collected with glass crushed pieces attached thereto, in an organic solvent to separate the glass crushed pieces and a resin component in a reusable state.
【０００７】[0007]
【課題を解決するための手段】すなわち本発明は、使用
済み合わせガラスからガラス破砕片と中間膜に含まれる
樹脂分を有機溶剤に浸漬あるいは溶解して分離する方法
に関するものである。That is, the present invention relates to a method for separating crushed glass fragments and resin components contained in an intermediate film from used laminated glass by immersing or dissolving them in an organic solvent.
【０００８】[0008]
【発明の実施の形態】本発明に使用される建築用及び自
動車用の合わせガラスは、ＪＩＳ Ｒ ３２１１（１９
９８）に定義されるように、２枚のガラス板とその２枚
のガラス板間の中間膜より構成される。ガラス板の色
相、種類、厚みやサイズは限定されないが、一般的には
厚みが１〜２０ｍｍの範囲のものが使用される。BEST MODE FOR CARRYING OUT THE INVENTION Laminated glass for buildings and automobiles used in the present invention is JIS R 3211 (19).
As defined in 98), it is composed of two glass plates and an intermediate film between the two glass plates. The hue, type, thickness and size of the glass plate are not limited, but those having a thickness in the range of 1 to 20 mm are generally used.
【０００９】合わせガラス用中間膜は、一般的には熱可
塑性樹脂を主成分とし、さらに必要に応じて可塑剤、紫
外線吸収剤や酸化防止剤等が配合される。主成分である
熱可塑性樹脂としては、従来よりポリビニルブチラール
樹脂、ポリウレタン樹脂、エチレン−酢酸ビニル共重合
体等が公知であるが、そのなかでも特にポリビニルブチ
ラール樹脂が好適に用いられている。The interlayer film for laminated glass generally contains a thermoplastic resin as a main component, and further contains a plasticizer, an ultraviolet absorber, an antioxidant and the like, if necessary. As the thermoplastic resin as the main component, polyvinyl butyral resin, polyurethane resin, ethylene-vinyl acetate copolymer and the like have been conventionally known. Among them, polyvinyl butyral resin is particularly preferably used.
【００１０】本発明は、使用済み合わせガラス用中間膜
を有機溶剤に浸漬または溶解することを特徴とし、その
溶剤の種類は特に限定されない。The present invention is characterized in that the used interlayer film for laminated glass is immersed or dissolved in an organic solvent, and the type of the solvent is not particularly limited.
【００１１】有機溶剤としては、特に限定されないが、
メタノール、エタノール、プロパノール等のアルコール
類、アセトン、メチルエチルケトン、メチルイソブチル
ケトン、シクロヘキサノン等のケトン類、ジメチルエー
テル、ジエチルエーテル、ＴＨＦ等のエーテル類、酢酸
メチル、酢酸エチル、酢酸ブチル等のエステル類、トル
エン、キシレン、ヘキサン、シクロヘキン等の炭素数８
以下の有機溶剤から選ばれた単独または複数の混合物が
好ましい。これら有機溶剤中にガラス破砕片等が付着し
た中間膜を撹拌しながら添加し、必要に応じて加熱しな
がら一定時間溶解操作する事によって樹脂溶液が得られ
る。樹脂溶液中の固形分濃度は１〜８０％、好ましくは
５〜５０％である。The organic solvent is not particularly limited,
Methanol, ethanol, alcohols such as propanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, ketones such as cyclohexanone, dimethyl ether, diethyl ether, ethers such as THF, methyl acetate, ethyl acetate, esters such as butyl acetate, toluene, 8 carbon atoms such as xylene, hexane and cyclohexyne
A single solvent or a mixture of a plurality of solvents selected from the following organic solvents is preferable. A resin solution can be obtained by adding an intermediate film having glass fragments and the like to these organic solvents while stirring, and performing a melting operation for a certain period of time while heating, if necessary. The solid content concentration in the resin solution is 1 to 80%, preferably 5 to 50%.
【００１２】この様にして得られた樹脂溶液には、中間
膜に付着していた大小様々なガラス破砕片の未溶解物を
含んでいるため、従来公知の分別方法により、樹脂溶液
と未溶解物を分離する。この分別方法は特に限定されな
いが、カートリッジフィルター、金網及び濾紙等を通過
させるなどによる濾過やデカンター、サイクロン、遠心
濾過等、遠心力を応用して比重差によって未溶解物を分
離する遠心分離が好ましい。Since the resin solution thus obtained contains undissolved material of glass fragments of various sizes adhering to the intermediate film, the resin solution and the undissolved material were separated by a conventionally known fractionation method. Separate things. This separation method is not particularly limited, but filtration by passing through a cartridge filter, wire netting, filter paper, etc., decanter, cyclone, centrifugal filtration, etc., in which undissolved matter is separated by the difference in specific gravity by applying centrifugal force, centrifugation is preferable. .
【００１３】上述の方法で得られた未溶解物を含まない
樹脂溶液から樹脂を回収する場合、特に溶媒を蒸発させ
る方法が好ましい。この場合、ベント付きスクリュー押
出機、フィルムエバポレーター型乾燥装置等が使用され
るが、その方法は特に限定されるものではない。When the resin is recovered from the undissolved resin solution obtained by the above method, the method of evaporating the solvent is particularly preferable. In this case, a vented screw extruder, a film evaporator type drying device, or the like is used, but the method is not particularly limited.
【００１４】樹脂溶液から回収された樹脂は１５０℃に
加熱した時の揮発分が５質量％未満、特に３質量％未満
が好ましい。The volatile content of the resin recovered from the resin solution when heated to 150 ° C. is preferably less than 5% by mass, more preferably less than 3% by mass.
【００１５】[0015]
【実施例】次に、本発明を実施例に基づいて説明する。EXAMPLES Next, the present invention will be explained based on examples.
【００１６】（実施例）撹拌機付き溶解槽にメタノール
［溶媒］を７００質量部仕込み、室温で撹拌しながら大
部分のガラスを剥離除去したポリビニルブチラール樹脂
系中間膜（最大１ｃｍ程度のガラス破砕片と剥離時に破
砕して生じた微小ガラス粉が付着）３００質量部を添加
した。その後、４０℃まで昇温し、５時間かけて中間膜
を溶解後、公称目開き５μｍのカートリッジフィルター
にて窒素加圧２ｋｇ／ｃｍ2で該溶液を濾過し、ガラス
破砕片及びカラス粉を除去した。(Example) A polyvinyl butyral resin-based interlayer film (a glass crushed piece having a maximum size of about 1 cm) was prepared by charging 700 parts by mass of methanol [solvent] into a dissolution tank equipped with a stirrer and peeling off most of the glass while stirring at room temperature. And 300 parts by mass of fine glass powder generated by crushing at the time of peeling adhered. Then, the temperature was raised to 40 ° C., the intermediate film was dissolved for 5 hours, and the solution was filtered through a cartridge filter having a nominal mesh size of 5 μm under a nitrogen pressure of 2 kg / cm 2 to remove glass fragments and crow powder. .
【００１７】得られたポリビニルブチラール樹脂のメタ
ノール溶液は１５０℃加熱での不揮発分が２８質量％だ
ったが、これをエバポレーターで揮発分５０質量％まで
濃縮し、その後減圧乾燥機に移し、１００℃で１２時間
乾燥し、樹脂を回収した。得られた樹脂は１５０℃加熱
の揮発分が０．８質量％でＤＳＣで測定したガラス転移
点は−２８℃だった。The methanol solution of polyvinyl butyral resin thus obtained had a nonvolatile content of 28% by mass when heated at 150 ° C., but this was concentrated to 50% by mass of volatile content with an evaporator and then transferred to a vacuum dryer to 100 ° C. The resin was recovered by drying for 12 hours. The obtained resin had a volatile content of 0.8% by mass when heated at 150 ° C., and had a glass transition point of −28 ° C. measured by DSC.
【００１８】回収された樹脂を再度メタノールに５質量
％になるように溶解し、公称目開き１μｍの定量用濾紙
で濾過して未溶解分を測定したが、０．０１質量％以下
だった。また、この５質量％メタノール溶液は無色透明
で、濁りも無かった。The recovered resin was dissolved again in methanol so as to be 5% by mass, and the undissolved content was measured by filtering with a quantitative filter paper having a nominal opening of 1 μm, but it was 0.01% by mass or less. The 5% by mass methanol solution was colorless and transparent, and had no turbidity.
【００１９】（比較例）実施例と同様の溶解槽に、使用
済み中間膜３００質量部を５０質量％の酢酸カリウム水
溶液７００質量部に浸漬し、２０℃で８００ｒｐｍで約
２時間撹拌した。水溶液上に浮遊した中間膜を回収し、
イオン交換水で洗浄した後、送風乾燥機で５０℃、１２
時間乾燥し、樹脂を得た。この樹脂の１５０℃の揮発分
は３．２質量％だった。また、ガラス転移点は２８℃だ
った。(Comparative Example) 300 parts by mass of the used interlayer film was immersed in 700 parts by mass of a 50% by mass aqueous potassium acetate solution in the same dissolution tank as in the example, and stirred at 20 ° C. and 800 rpm for about 2 hours. The intermediate film floating on the aqueous solution is collected,
After washing with ion-exchanged water, use a blast dryer for 12 hours at 50 ℃
After drying for an hour, a resin was obtained. The volatile content of this resin at 150 ° C. was 3.2% by mass. The glass transition point was 28 ° C.
【００２０】実施例と同様に、得られた樹脂のメタノー
ル未溶解物を測定したところ、０．８質量％だった。ま
た、５質量％メタノール溶液は無色だが、しばらく静置
すると沈降するガラス破砕片等の未溶解物が確認され
た。The amount of undissolved methanol in the obtained resin was measured in the same manner as in the Example, and it was 0.8% by mass. Further, although the 5% by mass methanol solution was colorless, undissolved substances such as glass crushed pieces which sedimented when left standing for a while were confirmed.
【００２１】[0021]
【発明の効果】本発明によれば、使用済み合わせガラス
に含まれる中間膜から、簡単な操作で、多量のエネルギ
ーも必要せず、経済的に、高品質な樹脂を回収すること
ができる。According to the present invention, a high quality resin can be economically recovered from an intermediate film contained in a used laminated glass by a simple operation without requiring a large amount of energy.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D004 AA07 AA18 BA06 CA12 CA41 CC04 4F301 AA19 BF06 BF31 CA09 CA12 CA65 4G061 CB19 CD18 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4D004 AA07 AA18 BA06 CA12 CA41 CC04 4F301 AA19 BF06 BF31 CA09 CA12 CA65 4G061 CB19 CD18
Claims (2)
回収されるガラス破砕片が付着した中間膜を有機溶剤に
浸漬し、ガラス破砕片と樹脂分を分離する方法。1. A method of crushing a glass on the surface of a laminated glass and immersing an interlayer film, to which the crushed glass collected, is attached in an organic solvent to separate the crushed glass and the resin component.
剤に溶解することを特徴とする、請求項１記載のガラス
破砕片と樹脂分を分離する方法。2. The method for separating a glass fragment and a resin component according to claim 1, wherein the interlayer film having the glass fragment attached thereto is dissolved in an organic solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001360848A JP3897579B2 (en) | 2001-11-27 | 2001-11-27 | Method to separate resin from laminated glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001360848A JP3897579B2 (en) | 2001-11-27 | 2001-11-27 | Method to separate resin from laminated glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003160688A true JP2003160688A (en) | 2003-06-03 |
| JP3897579B2 JP3897579B2 (en) | 2007-03-28 |
Family
ID=19171598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001360848A Expired - Fee Related JP3897579B2 (en) | 2001-11-27 | 2001-11-27 | Method to separate resin from laminated glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3897579B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008093513A (en) * | 2006-10-06 | 2008-04-24 | Omega Techno Modeling:Kk | Apparatus for separating glass pieces and intermediate film from crushed laminated glass |
| WO2009103040A1 (en) * | 2008-02-15 | 2009-08-20 | Solutia Incorporated | Recycled poly(vinyl butyral) |
| US7909959B2 (en) | 2003-04-14 | 2011-03-22 | Sekisui Chemical Co., Ltd. | Method for releasing adhered article |
-
2001
- 2001-11-27 JP JP2001360848A patent/JP3897579B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7909959B2 (en) | 2003-04-14 | 2011-03-22 | Sekisui Chemical Co., Ltd. | Method for releasing adhered article |
| JP2008093513A (en) * | 2006-10-06 | 2008-04-24 | Omega Techno Modeling:Kk | Apparatus for separating glass pieces and intermediate film from crushed laminated glass |
| WO2009103040A1 (en) * | 2008-02-15 | 2009-08-20 | Solutia Incorporated | Recycled poly(vinyl butyral) |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3897579B2 (en) | 2007-03-28 |
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