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JP3937201B2 - Simulated bait and method for producing the same - Google Patents
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JP3937201B2 - Simulated bait and method for producing the same - Google Patents

Simulated bait and method for producing the same Download PDF

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Publication number
JP3937201B2
JP3937201B2 JP33672998A JP33672998A JP3937201B2 JP 3937201 B2 JP3937201 B2 JP 3937201B2 JP 33672998 A JP33672998 A JP 33672998A JP 33672998 A JP33672998 A JP 33672998A JP 3937201 B2 JP3937201 B2 JP 3937201B2
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Prior art keywords
parts
weight
hydrocarbon
hydroxybutyric acid
bait
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Expired - Fee Related
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JP33672998A
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JP2000157103A (en
Inventor
貞治 浦上
昌和 古嶋
寛 長岡
研治 田中
隆由 折本
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Mitsubishi Gas Chemical Co Inc
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Mitsubishi Gas Chemical Co Inc
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Description

【0001】
【発明の属する技術分野】
本発明は釣り用及び漁業用の疑似餌及びその製造方法に関するものである。
【0002】
【従来の技術】
従来、魚等の釣り用疑似餌としては塩化ビニール系エラストマーを主体としたプラスチックワームが主流で、このプラスチックワームは弾力性及び結着性に富み、魚に対する視認性が良く、疑似餌としての実績を数多く積んでいた。しかし、そうした中で使用中に針から脱落したり、水中にて岩や木に引っかかり失ってしまう等、これらの疑似餌が数多く自然界に投棄されているのが現状である。その結果投棄された疑似餌はそのままの形となって自然界に残り、鳥が誤飲して死亡するケースがある。又、ゴミとなって半永久に残ってしまう。更に、集めて焼却するとダイオキシン等の有害物質が発生するという問題点がある。
【0003】
【発明が解決しようとする課題】
本発明は、従来技術に見られる前記問題点を解決し、釣り用、漁業用の優れた疑似餌を提供することをその課題とする。
【0004】
【課題を解決するための手段】
本発明者等は、前記課題を解決すべく鋭意検討を重ねた結果、本発明を完成するに至った。即ち、従来用いられてきた塩化ビニールエラストマーを主体とした疑似餌に変えて、特定の生分解性樹脂を原料とした疑似餌を用いることにより上記課題を解決することが可能となった。即ち本発明は、
(1)3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、及び炭素数5〜17の炭化水素65〜90重量部からなる樹脂組成物を成形して得られる疑似餌、及び
(2)3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、及び炭素数5〜17の炭化水素65〜90重量部からなる樹脂組成物を100〜200℃で加温混合したのち成形する疑似餌の製造方法、に関する。
本発明の疑似餌は、水中及び土壌中において徐々に分解するため、そのままの形で半永久的に残るということはなく、魚類、鳥類が間違って捕食した場合においても死亡に至る危険性が低減されることが期待される。また、本発明における疑似餌の構成成分には塩素系有機化合物を含まないので、焼却時にダイオキシン等の有害物質を発生することがない。
【0005】
【発明の実施形態】
本発明に用いる3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエートは、微生物が産生する脂肪族ポリエステルであり、広く研究が行われている生分解性樹脂である。この代表的樹脂としてはポリヒドロキシ酪酸(以後PHBと略す)及び3−ヒドロキシ酪酸と3−ヒドロキシ吉草酸の共重合体(以下PHB/PHV共重合体と略す)がある。これらポリヒドロキシアルカノエートは、例えば、アルカリゲネス(Alcaligenes)属、アゾトバクター(Azotobacter)属、メチロバクテリウム(Methylobacteriumu)属、ノカルジア(Nocardia)属、シュードモナス(Pseudomonas)属等の細菌を用いた公知の発酵法でポリヒドロキシアルカノエートを含有する細菌を製造することが出来る。得られたポリヒドロキシアルカノエートを分離精製する方法に関しては、例えば、米国特許第3036959号公報、同第4101533号公報、同第3275610号公報、ヨーロッパ特許第15123号公報に、ピリジン、塩化メチレン、1,2−プロピレンカーボネート、クロロホルム、1,2−ジクロロエタン等の溶剤を用いた精製法が記載されており、又特開平7−177894号公報には細菌菌体を高圧ホモジナイザーで破砕後、ポリヒドロキアルカノエートを分離し、分離したポリヒドロキシアルカノエートを酵素系漂白剤で処理する方法が示されている。最近では、発酵法によらずとも化学合成による3−ヒドロキシ酪産単位を含むポリヒドロキシアルカノエートの製造法が報告されている。
【0006】
生分解性を示す樹脂は、微生物産生の3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート以外にもポリ乳酸、グリコール類と脂肪族ジカルボン酸とからなる脂肪族ポリエステル(例えばポリブチレンサクシネ−ト、ポリエステルカーボネートなど)、セルロースアセテート、ポリカプロラクトンなどが挙げられる。しかしながら本発明における疑似餌には微生物産生の3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエートを用いるのが最も良い。なぜなら、疑似餌を成形する際、炭素数5〜17の炭化水素との親和性がよく、且つ良好な外観を示し、かつ水中での泳姿、弾力性、結着性も従来品と遜色ない成形品を得ることができるからである。
【0007】
本発明に用いる炭素数5〜17の炭化水素は、飽和炭化水素でも不飽和炭化水素もよく、また直鎖状炭化水素でも分岐状の鎖状炭化水素でも環状炭化水素でも良い。また炭素数5〜17の炭化水素を複数種混合して用いても良いし、1種類を単独で用いても良い。好ましい炭素数5〜17の炭化水素の例として流動パラフィンを挙げることが出来る。市販されている流動パラフィンには出光興産株式会社製のダイアナNP−24(商品名)、国産化学株式会社製の流動パラフィン1級等がある。
【0008】
本発明の疑似餌を成形するための樹脂組成物は、3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、及び炭素数5〜17の炭化水素65〜90重量部からなる。3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエートが5重量部より少ない場合、十分な生分解性が得られない可能性があり、また20重量部を越えると成型品の剛性が増すと同時に弾性が低下して、泳ぐ姿になめらかさが欠けてくる。炭素数5〜17の炭化水素は65〜90重量部が良い。なぜなら、この範囲をはずれると弾力性、結着性を保持することが困難になるからである。
【0009】
本発明における疑似餌は、成形する際に100〜200℃で加熱混合するのが良い。なぜなら、100℃より低い温度では各構成成分を均一に混合できない恐れがあり、反対に200℃より高い温度では3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエートの劣化により、満足する性能が得られない恐れがあるからである。
【0010】
本発明における疑似餌には、釣果の増大を図るため、アミノ酸や海産物油脂等の摂餌促進物質を添加することができる。成形性、経済性の面から添加量としては、疑似餌を成形するための樹脂組成物が3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、炭素数5〜17の炭化水素65〜90重量部、及び摂餌促進物質0.01〜30重量部からなるようにすることが好ましい。
【0011】
本発明の範囲を逸脱せず、本発明の目的を損なわない範囲において、3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート、ポリスチレン系エラストマー、プロセスオイル、摂餌促進物質以外の物質、例えば顔料、無機充填剤、離型剤、帯電防止剤、紫外線吸収剤、難燃化剤、酸化防止剤など慣用の添加剤を目的に応じて添加することができる。
【0012】
【発明の効果】
本発明により、従来使用されてきた疑似餌と遜色ない泳姿、弾力性、結着性を保持し、かつ自然界で分解、崩壊する生分解性疑似餌を得、自然環境への負荷を低減させることが期待できる。
【0013】
【実施例】
以下に実施例にて本発明を詳細に説明するが、本発明はこれに限定されるものでない。
実施例1
PHB粉体10重量部とポリスチレン系エラストマー10重量部及び摂餌促進物質としてアミノ酸混合物0.5重量部、海産物油脂10重量部を加えて良く混合し、流動パラフィン(商品名:ダイアナNP−24、出光興産株式会社製)70重量部を加え膨潤させた後、射出成型器機にて150℃下で加熱、可塑化、完全に溶解させた状態で小魚の金型に充填、冷却して成形体を得る。水中での動きは流水式の水槽で、ハリ持ち強度はレオメ−タ−、魚のくいつきは試験用の淡水魚(ラージマウスバス)を用いて上記の製法で得られた本発明品と塩化ビニールエラストマーを主体とした従来品と比較して評価した。 また、生分解性はこれら疑似餌の切片をコンポスト中に入れ半年後に本発明品と従来品と比較して評価した。結果を表1に示す。
【0014】
【表1】

Figure 0003937201
【0015】
実施例2
実施例1のPHB粉体10重量部の代わりに、生分解性樹脂であるPHB/PHV共重合体を用いた以外は実施例1と同様にして疑似餌の作成を試みた。また、比較例1〜4としてポリ乳酸、ポリブチレンサクシネート、セルロースアセテート及びポリカプロラクトンをそれぞれ使用し、その他組成及び成型方法は実施例1と同様にして疑似餌の作成を試みた。均一溶解が可能であるか、疑似餌への成形が可能であるか否かを調べた結果を表2に示す。
【0016】
【表2】
Figure 0003937201
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pseudo bait for fishing and fishery and a method for producing the same.
[0002]
[Prior art]
Conventionally, plastic worms mainly made of vinyl chloride elastomer have been the mainstream as pseudo bait for fishing of fish, etc., and this plastic worm is rich in elasticity and binding properties, has good visibility against fish, and has a track record as a pseudo bait. There were many. However, under such circumstances, many of these pseudo foods are dumped in nature, such as falling off the needle during use or being caught by rocks or trees in the water. As a result, the discarded pseudo food remains in its natural form, and there are cases where birds accidentally swallow and die. Moreover, it becomes garbage and remains semipermanently. Furthermore, there is a problem in that harmful substances such as dioxins are generated when collected and incinerated.
[0003]
[Problems to be solved by the invention]
This invention solves the said problem found in a prior art, and makes it the subject to provide the excellent artificial bait for fishing and fishery.
[0004]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have completed the present invention. That is, it has become possible to solve the above problems by using a pseudo bait made of a specific biodegradable resin as a raw material instead of the conventionally used pseudo bait mainly composed of a vinyl chloride elastomer. That is, the present invention
(1) Molding a resin composition comprising 5 to 20 parts by weight of a polyhydroxyalkanoate containing a 3-hydroxybutyric acid unit, 5 to 15 parts by weight of a polystyrene-based elastomer, and 65 to 90 parts by weight of a hydrocarbon having 5 to 17 carbon atoms And (2) 5-20 parts by weight of a polyhydroxyalkanoate containing 3-hydroxybutyric acid units, 5-15 parts by weight of a polystyrene-based elastomer, and 65-90 parts by weight of a hydrocarbon having 5-17 carbon atoms. The present invention relates to a method for producing a pseudo bait, which is formed by heating and mixing a resin composition comprising parts at 100 to 200 ° C.
The simulated bait of the present invention gradually decomposes in water and soil, so that it does not remain semipermanently as it is, and the risk of death even if fish and birds are preyed by mistake is reduced. It is expected that Moreover, since the component of the pseudo bait in the present invention does not contain a chlorinated organic compound, no harmful substances such as dioxin are generated during incineration.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The polyhydroxyalkanoate containing 3-hydroxybutyric acid units used in the present invention is an aliphatic polyester produced by microorganisms, and is a biodegradable resin that has been extensively studied. Typical resins include polyhydroxybutyric acid (hereinafter abbreviated as PHB) and a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid (hereinafter abbreviated as PHB / PHV copolymer). These polyhydroxyalkanoates are, for example, known fermentation using bacteria such as Alcaligenes genus, Azotobacter genus, Methylobacteriumu genus, Nocardia genus, Pseudomonas genus, etc. Bacteria containing polyhydroxyalkanoates can be produced by the method. Regarding the method for separating and purifying the obtained polyhydroxyalkanoate, for example, U.S. Pat. Nos. 3,036,959, 4,101,533, 3,275,610, and European Patent No. 15,123 include pyridine, methylene chloride, 1 , 2-propylene carbonate, chloroform, 1,2-dichloroethane and the like, and a purification method is described, and Japanese Patent Application Laid-Open No. 7-177894 discloses a method of disrupting bacterial cells with a high-pressure homogenizer and then polyhydroxyalkanoic acid. It shows a method for separating an acid and treating the separated polyhydroxyalkanoate with an enzymatic bleach. Recently, a method for producing a polyhydroxyalkanoate containing 3-hydroxybutyric acid units by chemical synthesis has been reported regardless of the fermentation method.
[0006]
Resins exhibiting biodegradability include aliphatic polyesters made of polylactic acid, glycols and aliphatic dicarboxylic acids in addition to polyhydroxyalkanoates containing 3-hydroxybutyric acid units produced by microorganisms (for example, polybutylene succinate, Polyester carbonate), cellulose acetate, polycaprolactone and the like. However, it is best to use a polyhydroxyalkanoate containing 3-hydroxybutyric acid units produced by microorganisms for the pseudo food in the present invention. Because, when forming a pseudo bait, it has a good affinity with hydrocarbons having 5 to 17 carbon atoms, shows a good appearance, and is not inferior to conventional products in swimming, elasticity and binding in water This is because a molded product can be obtained.
[0007]
The hydrocarbon having 5 to 17 carbon atoms used in the present invention may be a saturated hydrocarbon or an unsaturated hydrocarbon, and may be a linear hydrocarbon, a branched chain hydrocarbon or a cyclic hydrocarbon. A plurality of hydrocarbons having 5 to 17 carbon atoms may be mixed and used, or one kind may be used alone. A liquid paraffin can be mentioned as an example of a preferable C5-C17 hydrocarbon. Commercially available liquid paraffin includes Diana NP-24 (trade name) manufactured by Idemitsu Kosan Co., Ltd., liquid paraffin first grade manufactured by Kokusan Chemical Co., Ltd. and the like.
[0008]
The resin composition for molding the simulated bait of the present invention comprises 5 to 20 parts by weight of a polyhydroxyalkanoate containing 3-hydroxybutyric acid units, 5 to 15 parts by weight of a polystyrene-based elastomer, and a hydrocarbon having 5 to 17 carbon atoms. It consists of 65 to 90 parts by weight. If the amount of polyhydroxyalkanoate containing 3-hydroxybutyric acid units is less than 5 parts by weight, sufficient biodegradability may not be obtained, and if it exceeds 20 parts by weight, the rigidity of the molded product increases and elasticity is increased. It drops and the smoothness of swimming is lost. The hydrocarbon having 5 to 17 carbon atoms is preferably 65 to 90 parts by weight. This is because if it is out of this range, it becomes difficult to maintain elasticity and binding properties.
[0009]
The pseudo bait in the present invention is preferably heated and mixed at 100 to 200 ° C. when molding. This is because the components may not be uniformly mixed at a temperature lower than 100 ° C., and on the contrary, satisfactory performance cannot be obtained at a temperature higher than 200 ° C. due to the deterioration of the polyhydroxyalkanoate containing 3-hydroxybutyric acid units. Because there is a fear.
[0010]
In the simulated bait in the present invention, feeding promoting substances such as amino acids and marine oils and fats can be added to increase the number of fishing fruits. In terms of moldability and economy, the amount added is 5 to 20 parts by weight of a polyhydroxyalkanoate containing 3-hydroxybutyric acid unit as a resin composition for molding a pseudo bait, 5 to 15 parts by weight of a polystyrene-based elastomer, It is preferable to comprise 65 to 90 parts by weight of a hydrocarbon having 5 to 17 carbon atoms and 0.01 to 30 parts by weight of a feeding promoting substance.
[0011]
Substances other than polyhydroxyalkanoates containing 3-hydroxybutyric acid units, polystyrene-based elastomers, process oils, feeding promoting substances, such as pigments, inorganics, etc., without departing from the scope of the present invention and without detracting from the object of the present invention. Conventional additives such as a filler, a release agent, an antistatic agent, an ultraviolet absorber, a flame retardant, and an antioxidant can be added according to the purpose.
[0012]
【The invention's effect】
According to the present invention, it is possible to obtain a biodegradable pseudo bait that keeps the swimming appearance, elasticity, and binding properties comparable to those of the conventional pseudo bait, and that decomposes and disintegrates in nature, thereby reducing the load on the natural environment. I can expect that.
[0013]
【Example】
EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited thereto.
Example 1
Add 10 parts by weight of PHB powder, 10 parts by weight of a polystyrene elastomer and 0.5 parts by weight of an amino acid mixture as a feeding promoting substance, and 10 parts by weight of seafood fats and oils, and mix well. Liquid paraffin (trade name: Diana NP-24, Idemitsu Kosan Co., Ltd.) After adding 70 parts by weight to swell, it is heated, plasticized and completely dissolved in an injection molding machine at 150 ° C., filled into a small fish mold and cooled to obtain a molded product. obtain. The movement in water is a flowing water tank, the holding strength is rheometer, and the fish sticking is a test freshwater fish (Large Mouse Bath). Evaluation was made in comparison with the main product. In addition, biodegradability was evaluated by putting sections of these pseudo foods in compost and comparing the product of the present invention with the conventional product half a year later. The results are shown in Table 1.
[0014]
[Table 1]
Figure 0003937201
[0015]
Example 2
In place of 10 parts by weight of the PHB powder of Example 1, a pseudo-bait was prepared in the same manner as in Example 1 except that a PHB / PHV copolymer, which is a biodegradable resin, was used. In addition, as Comparative Examples 1 to 4, polylactic acid, polybutylene succinate, cellulose acetate, and polycaprolactone were used, respectively, and the other compositions and molding methods were made in the same manner as in Example 1 to create a pseudo bait. Table 2 shows the results of examining whether uniform dissolution is possible and whether it is possible to form a pseudo food.
[0016]
[Table 2]
Figure 0003937201

Claims (3)

3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、及び炭素数5〜17の炭化水素65〜90重量部からなる樹脂組成物を成形して得られることを特徴とする疑似餌。Obtained by molding a resin composition comprising 5 to 20 parts by weight of a polyhydroxyalkanoate containing 3-hydroxybutyric acid units, 5 to 15 parts by weight of a polystyrene-based elastomer, and 65 to 90 parts by weight of a hydrocarbon having 5 to 17 carbon atoms. Pseudo bait characterized by being. 3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、炭素数5〜17の炭化水素65〜90重量部、及び摂餌促進物質0.01〜30重量部からなる樹脂組成物を成形して得られる請求項1記載の疑似餌。5 to 20 parts by weight of a polyhydroxyalkanoate containing 3-hydroxybutyric acid units, 5 to 15 parts by weight of a polystyrene-based elastomer, 65 to 90 parts by weight of a hydrocarbon having 5 to 17 carbon atoms, and a feeding promoting substance 0.01 to 30 The simulated bait according to claim 1, obtained by molding a resin composition comprising parts by weight. 3−ヒドロキシ酪酸単位を含むポリヒドロキシアルカノエート5〜20重量部、ポリスチレン系エラストマー5〜15重量部、及び炭素数5〜17の炭化水素65〜90重量部からなる樹脂組成物を100〜200℃で加温混合したのち成形することを特徴とする疑似餌の製造方法。A resin composition comprising 5 to 20 parts by weight of a polyhydroxyalkanoate containing a 3-hydroxybutyric acid unit, 5 to 15 parts by weight of a polystyrene-based elastomer, and 65 to 90 parts by weight of a hydrocarbon having 5 to 17 carbon atoms is obtained at 100 to 200 ° C. A method for producing a pseudo bait, which is formed by heating and mixing after heating.
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AU2002224590A1 (en) * 2000-07-28 2002-02-13 Nippon Kayaku Kabushiki Kaisha Lures
US7803360B2 (en) 2007-04-30 2010-09-28 Biobait, Inc. Water-degradable fishing lure
CN101525480B (en) * 2008-07-20 2012-05-09 集伍国际控股集团有限公司 Biodegradable artificial fishing bait and its manufacturing method
EP4501107A4 (en) 2022-03-31 2026-03-11 Dainichiseika Color Chem BIODEGRADABLE ARTIFICIAL BATTERY COMPOSITION AND BIODEGRADABLE ARTIFICIAL BAIT

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