JP3961764B2 - Reuse method of monomer cast nylon resin molding - Google Patents
Reuse method of monomer cast nylon resin molding Download PDFInfo
- Publication number
- JP3961764B2 JP3961764B2 JP2000379916A JP2000379916A JP3961764B2 JP 3961764 B2 JP3961764 B2 JP 3961764B2 JP 2000379916 A JP2000379916 A JP 2000379916A JP 2000379916 A JP2000379916 A JP 2000379916A JP 3961764 B2 JP3961764 B2 JP 3961764B2
- Authority
- JP
- Japan
- Prior art keywords
- nylon resin
- monomer cast
- cast nylon
- resin molded
- lactam
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- Y02P20/141—Feedstock
- Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
-
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Polyamides (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明はモノマーキャストナイロン樹脂成形体の切削屑等のスクラップを再利用する方法および、該スクラップを含有するモノマーキャストナイロン樹脂成形体に関する。
【０００２】
【従来の技術】
モノマーキャストナイロン樹脂は、機械的強度、及び、耐熱性に優れており、歯車、車輪、ロール、スクリュー等の各種機械部品に用いられている。これら部品を切削加工して作る際には、かなりの量の切削屑が発生する。
【０００３】
このようなスクラップを、省資源や環境上の観点から再利用することが試みられている。再利用の方法としては、スクラップを含む原料を押出し成形又は射出成形して再生ナイロン樹脂を得る方法、スクラップを解重合する方法、及びε−カプロラクタム重合体スクラップを溶融ε−カプロラクタムと接触させて溶解し、得られた溶解液を重合する方法（特開2000−191827）などが知られている。
【０００４】
しかし、スクラップを解重合する方法では、解重合のための触媒または酵素が添加されるため、再重合に先立ち、解重合物を精製しなければならない。また、溶融ε−カプロラクタムと接触させて溶解する方法では、スクラップの量が溶融ε−カプロラクタム100重量部に対して20重量部以下でなければならないという制限がある。
【０００５】
【発明が解決しようとする課題】
そこで本発明は、モノマーキャストナイロン樹脂スクラップを、触媒等を添加することなく、且つ、高い効率で再利用する方法を、及び該スクラップを再利用した樹脂成形体を提供することを目的とする。
【０００６】
【課題を解決するための手段】
すなわち、本発明は、ω−ラクタムをモノマーキャスト法により重合して得られるモノマーキャストナイロン樹脂成形体において、該モノマーキャストナイロン樹脂と同種の、又は、異種のモノマーキャストナイロン樹脂の成形体スクラップを、該ω−ラクタム100重量部に対して10〜100重量部で含有することを特徴とするモノマーキャストナイロン樹脂成形体である。前記スクラップが10mm以下の長さに粉砕されていることが好ましい。また、前記ω−ラクタムが、ε−カプロラクタムであることが好ましい。さらに、本発明は下記工程、
（１）モノマーキャストナイロン樹脂成形体スクラップを粉砕する工程
（２）工程（１）で得られる粉砕物を金型内に充填する工程
（３）ω−ラクタムを金型内に注入する工程
（４）工程（３）で得られる、金型内の混合物を攪拌する工程、及び
（５）該混合物を重合固化させる工程
を含むモノマーキャストナイロン樹脂成形体の再利用方法にも関する。
加えて、本発明は、モノマーキャストナイロン樹脂成形体スクラップを用いてナイロン樹脂成形体を製造する方法であって、
（１）モノマーキャストナイロン樹脂成形体スクラップを粉砕する工程
（２）工程（１）で得られる粉砕物を金型内に充填する工程
（３）ω−ラクタムを金型内に注入する工程
（４）工程（３）で得られる、金型内の混合物を攪拌する工程、及び
（５）該混合物を重合固化させる工程
を含む方法に関する。
上記、各方法において、工程（１）と工程（２）の間に、工程（１）で得られる粉砕物を130℃〜160℃に予熱する工程をさらに含むことが好ましい。また、ω−ラクタム100重量部に対して10〜100重量部のモノマーキャストナイロン樹脂成形体スクラップを金型内に充填することが好ましく、又、ω−ラクタムが、ε−カプロラクタムであることが好ましい。
【０００７】
【発明の実施の形態】
本発明におけるモノマーキャストナイロン樹脂成形体は、ω−ラクタムを金型に注入し、アニオン重合させて得られる樹脂成形体である。ω−ラクタムは、好ましくは炭素数４〜１２を有し、例えば、γ−ブチロラクタム、ε−カプロラクタム、ω−エナントラクタム、ω−カプリロラクタム、ω−ラウロラクタム、及びこれらの混合物である。なかでも、ε−カプロラクタムが好ましい。
【０００８】
本発明において使用されるスクラップは、上記モノマーキャストナイロンと同種の、又は、異種のモノマーキャストナイロン樹脂の成形体スクラップである。好ましくは、耐熱性等の物性が均一になることから、同種のモノマーキャストナイロン樹脂の成形体スクラップが使用される。該スクラップは、本発明の目的を損なわない範囲で、フィラー等の慣用の添加剤を含んでいてもよい。
【０００９】
スクラップは、使用済みの製品、製品化の過程で生じた不良品、切削屑、または成形屑等であってよい。再利用に際し、好ましくは、コーンクラッシャー、ハンマーミル等の慣用の粉砕手段により、長さが約10mm以下、より好ましくは約８mm以下の鱗片状ないし粒状になるように粉砕する。
【００１０】
スクラップの含有量は、ω−ラクタム100重量部に対して、10〜100重量部、好ましくは、２０〜６０重量部である。前記下限値未満の配合量では、再使用効率が悪く、一方前記上限値を超える量では、スクラップ粉砕物同士が凝集して、固化しない部分が生じ得る。
【００１１】
本発明は、下記工程、
（１）モノマーキャストナイロン樹脂成形体スクラップを粉砕する工程
（２）工程（１）で得られる粉砕物を金型内に充填する工程
（３）ω−ラクタムを金型内に注入する工程
（４）工程（３）で得られる、金型内の混合物を攪拌する工程、及び
（５）該混合物を重合固化させる工程
を含むナイロン樹脂成形体の再利用方法にも関する。
好ましくは、工程（１）と工程（２）の間に、工程（１）で得られる粉砕物を130℃〜160℃に予熱する工程を設ける。粉砕物の温度が該下限値より低いと、工程（３）で得られるω−ラクタムとの混合物の温度が低くなり過ぎて、金型内で再度加熱しないと、重合が充分に進まない場合がある。一方、金型の温度は通常160℃付近であるので、該温度より高い温度まで予熱するメリットもない。なお、粉砕物を予熱する代わりに、工程（２）で充填した後に、金型内で１時間程度加熱し、その後にω−ラクタムを注入してもよい。
【００１２】
工程（１）におけるナイロン樹脂、粉砕手段及び粉砕物の大きさ、及び工程（３）のω−ラクタムの種類およびスクラップとの量比については上述したとおりである。工程（４）の攪拌方法には限定はなく、金型の形、大きさに応じた種々の形態の攪拌翼を備えた攪拌機により行なうことができる。
【００１３】
工程（５）の重合は、公知の方法により行なうことができる。重合触媒も、任意の公知の物を使用することができ、アルカリ金属、アルカリ土類金属およびこれら金属の水素化物、酸化物、水酸化物、炭酸塩、アルキル化物、アルコキシドやグリニャール化合物、及びこれらとω−ラクタムとの反応生成物等が挙げられる。例えば、リチウム、ナトリウム、カリウム、マグネシウム、カルシウム、水素化リチウム、水素化ナトリウム、水素化カリウム、酸化ナトリウム、酸化カリウム、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウム、炭酸カリウム、メチルナトリウム、エチルナトリウム、メチルカリウム、エチルカリウム、ナトリウムメチラート、ナトリウムエチラート、カリウムメチラート、カリウムエチラート、メチルマグネシウムブロマイド、エチルマグネシウムブロマイド、およびこれらの混合物を用いてよい。重合触媒の添加量は、通常、ω−ラクタムと該重合触媒との合計を100モル％として、0.02〜2.0モル％である。
【００１４】
重合助触媒、または反応開始剤としては、イソシアネート類、アシルラクタム類、カルバミドラクタム類、イソシアヌレート誘導体、酸ハライド類、尿素誘導体等を用いることができ、より具体的にはｎ−ブチルイソシアネート、フェニルイソシアネート、オクチルイソシアネート、トリレンジイソシアネート、イソホロンジイソシアネート、1,6-ヘキサメチレンジイソシアネート、トリメチルヘキサメチレンジイソシアネート、m-キシレンジイソシアネート、4,4'-ジフェニルメタンジイソシアネート、N-アセチル-ε-カプロラクタム、1,6-ヘキサメチレンビスカルバミドカプロラクタム、トリアリルイソシアヌレート、テレフタロイルクロリド、1,3-ジフェニル尿素等、及びこれらの混合物を用いることができる。該助触媒の添加量は、ω−ラクタムと該重合助触媒との合計を100モル％として、0.02〜2.0モル％、好ましくは0.2〜1.0モル％である。
【００１５】
上記重合触媒、および、重合助触媒を、別々に所定量のω−ラクタムに混合した２液を調製し、成形時に該２液を混合し、該混合液を金型に流し込み、110〜180℃の温度にて重合する。重合に要する時間は、モノマー、触媒、成形体の大きさ、および形状等に依存して適宜定められるが、典型的には約１０〜４５分間である。重合の後に、例えば190℃で、約30分程度、熱処理してもよい。
【００１６】
本発明の樹脂には、本発明の目的を損なわない範囲で、各種添加剤、例えば補強剤、顔料、染料、抗菌剤等を添加してよい。
【００１７】
得られる樹脂成形体は、新規樹脂成形体と同等の圧縮特性を有し、舷側の緩衝材、チェーンガイド等として用いることができる。
【００１８】
【実施例】
以下に本発明の実施例を示す。
実施例中に示す測定、評価は次に示すような条件で行った。
（１）圧縮強度 ASTM D695に準拠して測定した。
（２）圧縮弾性率 ASTM D695に準拠して測定した。
【００１９】
実施例１
ε−カプロラクタムからのモノマーキャストナイロン樹脂成形体のスクラップを長さ約３〜８mmの鱗片状に粉砕し、得られた砕製物を130℃のオーブンに入れて、乾燥及び予熱した。該砕製物270gを、160℃に予熱された成形金型（150ｍｍ×300ｍｍ×35ｍｍ）内に投入して１時間置き、金型温度を155℃に保った。
一方、別の１リットルフラスコに無水のε-カプロラクタム700ｇを採り、140〜150℃に加熱し、これに重合助触媒のトリレンジイソシアネート3.6ｇを加えた。また、300ミリリットルフラスコに無水のε-カプロラクタム200ｇを採り、約70℃に加熱し、これに重合触媒の水素化ナトリウム（油性63％）1.5ｇを添加し、140〜150℃に加熱した。次いで、これら２液を混合して、155℃に保持された前記金型に投入した（ε-カプロラクタム100重量部に対してスクラップ30重量部）。続いて、１分間程度金型内の混合物を攪拌した後、約３０分間重合させてから成形体を取り出した。得られた成形体の５％変形時の圧縮強度は85 MPa、圧縮弾性率は3,600 MPａであった。
【００２０】
実施例２
スクラップの量を450g（ε-カプロラクタム100重量部に対してスクラップ50重量部）としたことを除き、実施例１を繰り返した。得られた成形体の５％変形時の圧縮強度は90 MPa、圧縮弾性率は3,600 MPａであった。
【００２１】
比較例１
スクラップを入れなかったことを除き、実施例１を繰り返した。得られた成形体の５％変形時の圧縮強度は87 MPa、圧縮弾性率は3,500 MPａであった。
【００２２】
【発明の効果】
本発明の、モノマーキャストナイロン樹脂成形体の再利用方法は、添加物を使用せず、また、精製工程を含まず簡便であり、再利用効率も高い。さらに、得られる成形体は、新規樹脂成形体と同等の圧縮特性を示す。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of reusing scraps such as cutting scraps of a monomer cast nylon resin molded body and a monomer cast nylon resin molded body containing the scrap.
[0002]
[Prior art]
Monomer cast nylon resin is excellent in mechanical strength and heat resistance, and is used for various machine parts such as gears, wheels, rolls and screws. When these parts are made by cutting, a considerable amount of cutting waste is generated.
[0003]
Attempts have been made to reuse such scrap from the viewpoint of resource saving and environment. Recycling methods include extrusion molding or injection molding of raw materials containing scrap to obtain recycled nylon resin, scrap depolymerization, and dissolution by contacting ε-caprolactam polymer scrap with molten ε-caprolactam. A method of polymerizing the obtained solution (Japanese Patent Laid-Open No. 2000-191827) is known.
[0004]
However, in the method of depolymerizing scrap, since a catalyst or enzyme for depolymerization is added, the depolymerized product must be purified prior to repolymerization. Further, the method of dissolving by contacting with molten ε-caprolactam has a limitation that the amount of scrap must be 20 parts by weight or less with respect to 100 parts by weight of molten ε-caprolactam.
[0005]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a method for reusing monomer cast nylon resin scrap with high efficiency without adding a catalyst or the like, and a resin molded body in which the scrap is reused.
[0006]
[Means for Solving the Problems]
That is, the present invention is a monomer cast nylon resin molded product obtained by polymerizing ω-lactam by a monomer cast method, and the same or different monomer cast nylon resin molded product scrap as the monomer cast nylon resin, A monomer cast nylon resin molded body containing 10 to 100 parts by weight with respect to 100 parts by weight of the ω-lactam. The scrap is preferably pulverized to a length of 10 mm or less. The ω-lactam is preferably ε-caprolactam. Furthermore, the present invention includes the following steps:
(1) Step of grinding monomer cast nylon resin molded body scrap (2) Step of filling pulverized material obtained in step (1) into the mold (3) Step of injecting ω-lactam into the mold (4 It also relates to a method of reusing a monomer cast nylon resin molded article comprising the step of stirring the mixture in the mold obtained in step (3) and the step of (5) polymerizing and solidifying the mixture.
In addition, the present invention is a method for producing a nylon resin molded body using a monomer cast nylon resin molded body scrap,
(1) Process of grinding monomer cast nylon resin molded product scrap
(2) A step of filling the mold with the pulverized material obtained in step (1)
(3) Step of injecting ω-lactam into the mold
(4) a step of stirring the mixture in the mold obtained in step (3), and
(5) A step of polymerizing and solidifying the mixture
Relates to a method comprising:
In each of the above methods, it is preferable to further include a step of preheating the pulverized product obtained in step (1) to 130 ° C. to 160 ° C. between step (1) and step (2). Further, it is preferable to fill the mold with 100 to 100 parts by weight of monomer cast nylon resin molded body scrap with respect to 100 parts by weight of ω-lactam, and the ω-lactam is preferably ε-caprolactam. .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The monomer cast nylon resin molded body in the present invention is a resin molded body obtained by injecting ω-lactam into a mold and anionic polymerization. The ω-lactam preferably has 4 to 12 carbon atoms, such as γ-butyrolactam, ε-caprolactam, ω-enantolactam, ω-caprolactam, ω-laurolactam, and mixtures thereof. Of these, ε-caprolactam is preferable.
[0008]
The scrap used in the present invention is a molded scrap of a monomer cast nylon resin that is the same as or different from the monomer cast nylon. Preferably, since the physical properties such as heat resistance are uniform, the same kind of monomer cast nylon resin molded body scrap is used. The scrap may contain a conventional additive such as a filler as long as the object of the present invention is not impaired.
[0009]
The scrap may be a used product, a defective product generated in the process of commercialization, cutting waste, or molding waste. When reusing, it is preferably pulverized by a conventional crushing means such as a cone crusher or a hammer mill so that the length is about 10 mm or less, more preferably about 8 mm or less.
[0010]
The scrap content is 10 to 100 parts by weight, preferably 20 to 60 parts by weight with respect to 100 parts by weight of ω-lactam. When the blending amount is less than the lower limit value, the reuse efficiency is poor, while when the blending amount exceeds the upper limit value, the crushed scraps may be aggregated and a portion that does not solidify may be generated.
[0011]
The present invention includes the following steps:
(1) Step of grinding monomer cast nylon resin molded body scrap (2) Step of filling pulverized material obtained in step (1) into the mold (3) Step of injecting ω-lactam into the mold (4 It also relates to a method for reusing a nylon resin molded article comprising the step of stirring the mixture in the mold obtained in step (3) and the step of (5) polymerizing and solidifying the mixture.
Preferably, a step of preheating the pulverized product obtained in step (1) to 130 ° C. to 160 ° C. is provided between step (1) and step (2). If the temperature of the pulverized product is lower than the lower limit, the temperature of the mixture with the ω-lactam obtained in the step (3) becomes too low, and the polymerization may not proceed sufficiently unless heated again in the mold. is there. On the other hand, since the temperature of the mold is usually around 160 ° C., there is no merit of preheating to a temperature higher than the temperature. Instead of preheating the pulverized product, after filling in step (2), it may be heated in the mold for about 1 hour, and then ω-lactam may be injected.
[0012]
The size of the nylon resin, the pulverizing means and the pulverized product in step (1), and the kind of ω-lactam and the amount ratio with scrap in step (3) are as described above. There is no limitation in the stirring method in the step (4), and the stirring can be performed by a stirrer equipped with various types of stirring blades according to the shape and size of the mold.
[0013]
The polymerization in the step (5) can be performed by a known method. Any known catalyst can be used as the polymerization catalyst, and alkali metals, alkaline earth metals and hydrides, oxides, hydroxides, carbonates, alkylates, alkoxides and Grignard compounds of these metals, and these And the reaction product of ω-lactam and the like. For example, lithium, sodium, potassium, magnesium, calcium, lithium hydride, sodium hydride, potassium hydride, sodium oxide, potassium oxide, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, methyl sodium, ethyl sodium, Methyl potassium, ethyl potassium, sodium methylate, sodium ethylate, potassium methylate, potassium ethylate, methyl magnesium bromide, ethyl magnesium bromide, and mixtures thereof may be used. The addition amount of the polymerization catalyst is usually 0.02 to 2.0 mol%, where the total of ω-lactam and the polymerization catalyst is 100 mol%.
[0014]
As the polymerization co-catalyst or reaction initiator, isocyanates, acyllactams, carbamide lactams, isocyanurate derivatives, acid halides, urea derivatives and the like can be used, and more specifically, n-butyl isocyanate, phenyl Isocyanate, octyl isocyanate, tolylene diisocyanate, isophorone diisocyanate, 1,6-hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, m-xylene diisocyanate, 4,4'-diphenylmethane diisocyanate, N-acetyl-ε-caprolactam, 1,6- Hexamethylene biscarbamide caprolactam, triallyl isocyanurate, terephthaloyl chloride, 1,3-diphenylurea, and the like, and mixtures thereof can be used. The amount of the cocatalyst added is 0.02 to 2.0 mol%, preferably 0.2 to 1.0 mol%, where the total of ω-lactam and the polymerization cocatalyst is 100 mol%.
[0015]
Two liquids are prepared by separately mixing the polymerization catalyst and the polymerization promoter in a predetermined amount of ω-lactam, the two liquids are mixed at the time of molding, and the mixed liquid is poured into a mold. Polymerize at the temperature of The time required for the polymerization is appropriately determined depending on the monomer, the catalyst, the size and shape of the molded body, and is typically about 10 to 45 minutes. After the polymerization, for example, heat treatment may be performed at 190 ° C. for about 30 minutes.
[0016]
Various additives such as reinforcing agents, pigments, dyes, antibacterial agents and the like may be added to the resin of the present invention as long as the object of the present invention is not impaired.
[0017]
The obtained resin molded body has compression characteristics equivalent to those of the new resin molded body, and can be used as a buffer material on the heel side, a chain guide, or the like.
[0018]
【Example】
Examples of the present invention are shown below.
Measurements and evaluations shown in the examples were performed under the following conditions.
(1) Compressive strength Measured according to ASTM D695.
(2) Compression modulus Measured according to ASTM D695.
[0019]
Example 1
The scrap of the monomer cast nylon resin molded product from ε-caprolactam was pulverized into a scale of about 3 to 8 mm in length, and the obtained crushed product was put in an oven at 130 ° C. and dried and preheated. 270 g of the crushed product was put into a molding die (150 mm × 300 mm × 35 mm) preheated to 160 ° C. and placed for 1 hour, and the mold temperature was kept at 155 ° C.
On the other hand, 700 g of anhydrous ε-caprolactam was taken in another 1 liter flask and heated to 140 to 150 ° C., and 3.6 g of tolylene diisocyanate as a polymerization promoter was added thereto. Further, 200 g of anhydrous ε-caprolactam was taken in a 300 ml flask and heated to about 70 ° C., 1.5 g of sodium hydride (63% oily) as a polymerization catalyst was added thereto, and the mixture was heated to 140 to 150 ° C. Next, these two liquids were mixed and put into the mold maintained at 155 ° C. (30 parts by weight of scrap with respect to 100 parts by weight of ε-caprolactam). Then, after stirring the mixture in a metal mold | die for about 1 minute, after making it superpose | polymerize for about 30 minutes, the molded object was taken out. The obtained molded product had a compressive strength of 85 MPa and a compressive modulus of 3,600 MPa at 5% deformation.
[0020]
Example 2
Example 1 was repeated except that the amount of scrap was 450 g (50 parts by weight of scrap with respect to 100 parts by weight of ε-caprolactam). The obtained molded product had a compressive strength of 90 MPa and a compressive modulus of 3,600 MPa at 5% deformation.
[0021]
Comparative Example 1
Example 1 was repeated except that no scrap was added. The obtained molded product had a compressive strength at 5% deformation of 87 MPa and a compressive elastic modulus of 3,500 MPa.
[0022]
【The invention's effect】
The method for reusing a monomer cast nylon resin molded article of the present invention does not use additives, is simple without including a purification step, and has high reuse efficiency. Furthermore, the obtained molded product exhibits compression characteristics equivalent to those of the new resin molded product.
Claims (11)
（１）モノマーキャストナイロン樹脂成形体スクラップを粉砕する工程
（２）工程（１）で得られる粉砕物を金型内に充填する工程
（３）ω−ラクタムを金型内に注入する工程
（４）工程（３）で得られる、金型内の混合物を攪拌する工程、及び
（５）該混合物を重合固化させる工程。Reusing method of monomer cast nylon resin molded body including the following steps,
(1) Step of grinding monomer cast nylon resin molded body scrap (2) Step of filling pulverized material obtained in step (1) into the mold (3) Step of injecting ω-lactam into the mold (4 ) A step of stirring the mixture in the mold obtained in step (3); and (5) a step of polymerizing and solidifying the mixture.
（１）モノマーキャストナイロン樹脂成形体スクラップを粉砕する工程
（２）工程（１）で得られる粉砕物を金型内に充填する工程
（３）ω−ラクタムを金型内に注入する工程
（４）工程（３）で得られる、金型内の混合物を攪拌する工程、及び
（５）該混合物を重合固化させる工程
を含む方法。A method for producing a nylon resin molding using a monomer cast nylon resin molding scrap,
(1) Step of grinding monomer cast nylon resin molded body scrap (2) Step of filling pulverized material obtained in step (1) into the mold (3) Step of injecting ω-lactam into the mold (4 ) A step of stirring the mixture in the mold obtained in step (3); and (5) a step of polymerizing and solidifying the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000379916A JP3961764B2 (en) | 2000-12-14 | 2000-12-14 | Reuse method of monomer cast nylon resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000379916A JP3961764B2 (en) | 2000-12-14 | 2000-12-14 | Reuse method of monomer cast nylon resin molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002179789A JP2002179789A (en) | 2002-06-26 |
| JP3961764B2 true JP3961764B2 (en) | 2007-08-22 |
Family
ID=18848193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000379916A Expired - Lifetime JP3961764B2 (en) | 2000-12-14 | 2000-12-14 | Reuse method of monomer cast nylon resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3961764B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101287121B1 (en) | 2013-05-31 | 2013-07-17 | (주)남일엔프라 | Processing method for cast nylon scrap |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235197B (en) * | 2007-02-01 | 2010-06-09 | 上海化工研究院天地科技发展有限公司 | Plasticizing modifying treatment method for mould nylon |
| CN101121787B (en) * | 2007-08-10 | 2010-06-02 | 张静焕 | Modified mould nylon |
-
2000
- 2000-12-14 JP JP2000379916A patent/JP3961764B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101287121B1 (en) | 2013-05-31 | 2013-07-17 | (주)남일엔프라 | Processing method for cast nylon scrap |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002179789A (en) | 2002-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5857055B2 (en) | Method for producing a monomer composition and method for using this method for producing polyamide moldings | |
| US10538624B2 (en) | Process for producing monomer compositions and use of these for producing a polyamide molding | |
| JP3961764B2 (en) | Reuse method of monomer cast nylon resin molding | |
| JP3657794B2 (en) | Ε-Caprolactam polymer molded product containing filler and method for producing the same | |
| CN1850484A (en) | Method for shaping and processing rubber product by direct reaction from waste tyre rubber powder | |
| JP3621234B2 (en) | Depolymerization method and repolymerization method of ε-caprolactam polymer | |
| CN102115556B (en) | Formula and manufacturing method for light plastic last | |
| CN1052941C (en) | Process for one-step producing rubber sheet with rubber powder | |
| JPH0764977B2 (en) | Lactam composition for reaction injection molding | |
| JPH07149891A (en) | Production of reinforced polyamide resin molded product | |
| JP2001139682A (en) | Monomer-cast nylon resin and its production method | |
| JP2568896B2 (en) | Method for producing polyamide foam | |
| JP2620962B2 (en) | Manufacturing method of polyamide foam molding | |
| DE1745127A1 (en) | Lactam polymerization catalysis | |
| JP3116536B2 (en) | Production method for norbornene resin molded products | |
| JP2568895B2 (en) | Method for producing polyamide foam | |
| JPH0249619B2 (en) | ||
| JPH07707B2 (en) | Method for producing polyamide foam | |
| JPH06157769A (en) | Polymerization catalyst for rim molding of thermoplastic resin | |
| JP2000191827A (en) | METHOD FOR DISSOLVING epsi-CAPROLACTAM POLYMER AND METHOD FOR REPOLYMERIZATION | |
| CN116198151A (en) | Anti-slip well cover and preparation method thereof | |
| JPH01166920A (en) | Manufacture of polyamide foamed molded item | |
| SU725569A1 (en) | Vulcanized composition | |
| JPS59197428A (en) | Production of modified polyamide | |
| JP2015093959A (en) | Method for producing fiber-reinforced resin material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040903 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050401 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060420 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060616 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060928 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061122 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061219 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070511 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070517 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 3961764 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110525 Year of fee payment: 4 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110525 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120525 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120525 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130525 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130525 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |