JP2655278B2 - Character eraser made of vinyl chloride resin - Google Patents
Character eraser made of vinyl chloride resinInfo
- Publication number
- JP2655278B2 JP2655278B2 JP23078188A JP23078188A JP2655278B2 JP 2655278 B2 JP2655278 B2 JP 2655278B2 JP 23078188 A JP23078188 A JP 23078188A JP 23078188 A JP23078188 A JP 23078188A JP 2655278 B2 JP2655278 B2 JP 2655278B2
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- plasticizer
- weight
- phthalate
- parts
- character
- 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.)
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は塩化ビニル系樹脂からなる字消材に関し、更
に詳しくは、可塑剤の移行性が少なく、且つ消字性に優
れ、更には成形の容易な塩化ビニル系樹脂製字消材に関
するものである。Description: TECHNICAL FIELD The present invention relates to a character erasing material comprising a vinyl chloride resin, and more particularly, to a plasticizer having a small migration property and excellent erasing properties, and furthermore to molding. The present invention relates to a vinyl chloride resin character extinguishing material that is easy to use.
塩化ビニル系樹脂製字消は、優れた消字性、消字作業
中の感触及び優れた装飾性から、現在字消の主流を占め
ている。しかし乍ら、塩化ビニル樹脂製字消は可塑剤を
必要とし、例えばフタル酸ジブチル、フタル酸ジヘプチ
ル、フタル酸ジオクチル等が大量に配合されているた
め、ポリ塩化ビニル、ポリスチレンとABSの樹脂等、ま
た、アロマニ油系、桐油系、ニトロセルロースラッカー
とアルキッド樹脂系の塗膜等へ可塑剤が移行し、樹脂ま
たは塗膜の表面を軟化させたり、粘着させたり、表面そ
のものを剥離させるという欠点がある。特に、筆箱、下
敷、デスクマット等はポリ塩化ビニル、ポリスチレン製
であることが多く、また、鉛筆の塗膜はニトロセルロー
スラッカー等であるため、字消とこれらの表面とが接触
することによって、可塑剤が移行して筆箱等が侵され
る。かかる現象は筆箱等を台無しにし極めて不経済であ
るばかりでなく、字消自体の消字性も低下させ、また手
や消字紙面を汚染させる等甚々厄介な問題となってい
る。Character erasers made of vinyl chloride resin currently occupy the mainstream of character erasers because of their excellent erasability, feel during erasure work, and excellent decorativeness. However, the elimination of vinyl chloride resin characters requires a plasticizer.For example, dibutyl phthalate, diheptyl phthalate, dioctyl phthalate, etc. are blended in large amounts, so that polyvinyl chloride, resins of polystyrene and ABS, etc. In addition, the plasticizer migrates to the aroma oil-based, tung oil-based, nitrocellulose lacquer and alkyd resin-based coatings, etc., causing the resin or coating to soften, adhere, or peel off the surface itself. is there. In particular, pencil cases, underlays, desk mats, etc. are often made of polyvinyl chloride or polystyrene, and since the pencil coating is made of nitrocellulose lacquer, etc. The plasticizer migrates and the pen case and the like are attacked. Such a phenomenon is not only extremely uneconomical due to ruining a pencil case and the like, but also reduces the erasability of the erasure itself, and causes serious problems such as contamination of hands and erasure paper.
これらの問題を解消せんとして、（イ）トリメリット
酸トリアルキル類やピロメリット酸テトラアルキル類の
可塑剤の使用（特開昭57−35000）、（ロ）塩化ジフェ
ニル、塩素化パラフィン等の塩素化系可塑剤の使用（特
公昭44−25905）、（ハ）イソシアネートの使用（特公
昭46−42018）、（ニ）天然又は合成ゴムの使用（特開
昭55−34990）、（ホ）澱粉の使用（特公昭57−2294
8）、（ヘ）不飽和ポリエステルをAIBNの存在下で重合
性ビニルモノマーと重合した化合物の使用（特公昭51−
4134）、（ト）メタアクリロニトリル・ブタジエン・ス
チレン三元共重合体の使用（特開昭56−74139）等が提
案されている。In order to solve these problems, (a) use of a plasticizer of a trialkyl trimellitate or a tetraalkyl pyromellitate (JP-A-57-35000), (b) chlorine such as diphenyl chloride, chlorinated paraffin, etc. (V) Use of isocyanate (v. 46-42018), (d) Use of natural or synthetic rubber (JP-A-55-34990), (v) Starch Use (Japanese Patent Publication No. 57-2294)
8), (f) Use of a compound obtained by polymerizing an unsaturated polyester with a polymerizable vinyl monomer in the presence of AIBN.
4134), (g) Use of a terpolymer of methacrylonitrile / butadiene / styrene (JP-A-56-74139) and the like have been proposed.
しかし乍ら、（イ）はトリメリット酸系可塑剤はゲル
化温度が高く、これを多量に配合し押出成形すると、安
定した寸法で冷却が難しく、またかかる移行性の低い可
塑剤を用いた字消は折れ易く、消し屑が多く、且つ硬度
が大きいという問題があり、（ロ）はポリ塩化ビニルに
２次可塑剤として用いられる塩素化系可塑剤を多量に配
合しているため、これらの相溶性の低い可塑剤の字消か
らのブリードが避けられず、他の樹脂製品や塗膜を濡ら
し、（ハ）は成形方法と条件が難しく、またイソシアネ
ートと反応し易い化合物が使用されていないため、字消
中に未反応イソシアネートが残存する虞れがあり、子供
がなめる可能性のある字消としては安全性に疑問があ
り、（ニ）は混練が非常に難しく、またゴムと混合する
工程が増加し、生産性が悪く、（ホ）は移行性改善の効
果が小さく、（ヘ）は毒性の問題があり、また（ト）は
上記（ロ）と同様に塩素化系可塑剤がブリードする等の
問題を包含し、いずれも消字性、移行性、安全性及び成
形性の全てを満足させるには至っていないのが実情であ
る。However, (a) shows that the trimellitic acid-based plasticizer has a high gelling temperature, and when a large amount of the trimellitic acid-based plasticizer is blended and extruded, it is difficult to cool with stable dimensions, and such a plasticizer having a low migration property is used. The character eraser has a problem that it is easily broken, has a large amount of eraser dust, and has a high hardness, and (b) contains a large amount of chlorinated plasticizer used as a secondary plasticizer in polyvinyl chloride. The bleeding of the plasticizer with low compatibility is unavoidable, wetting other resin products and coatings, and (c) is a compound that is difficult to mold and conditions and that easily reacts with isocyanate. There is a risk that unreacted isocyanate may remain during erasing, and there is a doubt about the safety of erasing that may be licked by children. (D) is very difficult to knead and mix with rubber. Process increases and productivity increases Poor, (e) has a small effect of improving migration, (f) has a toxicity problem, and (g) includes problems such as bleeding of chlorinated plasticizers as in (b) above. In fact, none of them have satisfied all of the erasure property, migration property, safety and moldability.
本発明者らはかかる実情に鑑み、上記問題点を解消す
るべく鋭意研究の結果、可塑剤としてフタル酸オクチル
ベンジルを併用することにより所期の目的が達成させる
ことを見出し、本発明を完成した。In view of such circumstances, the present inventors have conducted intensive studies to solve the above problems, and found that the intended purpose can be achieved by using octylbenzyl phthalate as a plasticizer in combination, and completed the present invention. .
即ち、本発明の第１は、可塑剤を含有する塩化ビニル
系樹脂からなる字消材において、前記可塑剤がフタル酸
オクチルベンジルと他の可塑剤との組合わせからなるこ
とを特徴とする塩化ビニル系樹脂からなる字消材を、 本発明の第２は、可塑剤を含有する塩化ビニル系樹脂
からなる字消材において、前記可塑剤がフタル酸オクチ
ルベンジルとフタル酸ジシクロヘキシルと他の可塑剤と
の組合わせからなることを特徴とする塩化ビニル系樹脂
からなる字消材をそれぞれ内容とするものである。That is, a first aspect of the present invention is a character eraser comprising a vinyl chloride-based resin containing a plasticizer, wherein the plasticizer comprises a combination of octylbenzyl phthalate and another plasticizer. A second aspect of the present invention is a character eraser made of a vinyl chloride resin containing a plasticizer, wherein the plasticizer is octylbenzyl phthalate, dicyclohexyl phthalate, and another plasticizer. And a character eraser made of a vinyl chloride resin, which is characterized by being composed of a combination of the following.
本発明者らは低温ゲル化性で字消の成形が容易で、消
字性に優れるとともに、字消に適度な弾性を与え、且つ
移行量の少ない可塑剤について探索したところ、フタル
酸オクチルベンジル（以下、OBPと略記する）を見つ
け、これと字消材における既存の可塑剤とを組み合わせ
ることにより、上記目的が達成されることを知見した。The present inventors have searched for a plasticizer that has a low-temperature gelling property, is easy to form a character eraser, is excellent in character eraseability, gives appropriate elasticity to character eraser, and has a small migration amount. (Hereinafter abbreviated as OBP), and found that the above object was achieved by combining this with the existing plasticizer in the eraser.
本発明において、OBPと併用させる可塑剤としては特
に制限はないが、余り移行量の大きいものは適当でな
い。好ましい可塑剤としては、フタル酸ジオクチル（DO
P）、フタル酸ジノニル（DNP）、フタル酸ジイソノニル
（DINP）、フタル酸ジイソデシル（DIDP）、フタル酸ジ
トリデシル（DTDP）、フタル酸ジウンデシル（DUP）等
のアルキル基の炭素数が８個上のフタル酸エステル系可
塑剤；トリメリット酸トリオクチル（TOTM）、トリメリ
ット酸ジイソオクチルTIOTM等のトリメリット酸エステ
ル系可塑剤；分子量1000以上のポリエステル系可塑剤等
が挙げられる。炭素数が８個未満のフタル酸エステル系
可塑剤は移行性が著しく悪い。これらは単独又は２種以
上混用して用いられる。上記OBPと他の可塑剤との使用
割合としては、OBP10〜50重量％、他の可塑剤90〜50重
量％が好ましく、より好ましくは前者が20〜45重量％、
後者が80〜55重量％である。In the present invention, the plasticizer used in combination with OBP is not particularly limited, but a plasticizer having a large transfer amount is not suitable. Preferred plasticizers include dioctyl phthalate (DO
P), phthalate with dinonyl phthalate (DNP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), ditridecyl phthalate (DTDP), diundecyl phthalate (DUP), etc. Acid ester plasticizers; trimellitate plasticizers such as trioctyl trimellitate (TOTM) and diisooctyl trimellitate TIOTM; and polyester plasticizers having a molecular weight of 1,000 or more. A phthalate plasticizer having less than 8 carbon atoms has extremely poor migration properties. These may be used alone or in combination of two or more. As the use ratio of the OBP and the other plasticizer, OBP 10 to 50% by weight, other plasticizer 90 to 50% by weight is preferable, more preferably the former is 20 to 45% by weight,
The latter is 80-55% by weight.
OBPの添加量が上記より少ないとゲル化温度が上がり
成形性が低下し、またプレス加工の場合は、得られた字
消の表面の消字性が著しく低下し、内部も表面から近い
ほど消字性は低くなり、消字性にムラができる。また、
硬度が高くなり、特にトリメリット酸系の可塑剤を主成
分とした字消で消去作業を行うと、石鹸で擦ったような
感触になる。一方、OBPの添加量が上記より多いと可塑
剤がブリードするようになり、移行性が低下する。If the addition amount of OBP is less than the above, the gelling temperature rises and the moldability decreases, and in the case of press working, the erasability of the surface of the obtained eraser decreases significantly. The character is reduced, and the erasure is uneven. Also,
The hardness becomes high, and especially when the erasing operation is performed by eraser with a trimellitic acid-based plasticizer as a main component, a feeling as if rubbed with soap is obtained. On the other hand, if the added amount of OBP is larger than the above, the plasticizer bleeds and the migration property is reduced.
本発明において、あまり弾性が必要でない場合は、OB
Pとフタル酸ジシクロヘキシル（以下、DCHP）と略記す
る）と他の可塑剤を組み合わせて使用する。この場合の
使用割合は、OBP5〜30重量％、DCHP2〜15重量％及び残
部が他の可塑剤からなるのが好ましく、より好ましく
は、OBP10〜25重量％、DCHP5〜10重量％及び残部が他の
可塑剤の構成である。OBPが上記範囲より少ない又は多
い場合は前記した現象が現れ、またDCHPが上記より少な
いと、弾性を減少させる効果が不十分となり、また多い
と消去時に滑り易くなる。In the present invention, if less elasticity is required, OB
P is used in combination with dicyclohexyl phthalate (hereinafter abbreviated as DCHP) and another plasticizer. In this case, the use ratio is preferably 5 to 30% by weight of OBP, 2 to 15% by weight of DCHP and the balance being other plasticizers, more preferably 10 to 25% by weight of OBP, 5 to 10% by weight of DCHP and the balance Of the plasticizer. When the OBP is smaller or larger than the above range, the above-mentioned phenomenon appears. When the DCHP is smaller than the above range, the effect of decreasing the elasticity becomes insufficient, and when the DCBP is larger, the slip becomes easy at the time of erasing.
上記可塑剤は塩化ビニル系樹脂100重量部に対して60
〜180重量部、好ましくは100〜160重量部配合される。The plasticizer is 60 parts by weight per 100 parts by weight of the vinyl chloride resin.
-180 parts by weight, preferably 100-160 parts by weight.
本発明の塩化ビニル系樹脂製字消材は、従来の方法と
同様にして製造される。即ち、塩化ビニル系樹脂、可塑
剤の他、必要に応じて安定剤、着色材、香料等からなる
成形用組成物を混練し、脱泡した後、プレス成形、射出
成形、押出成形等の成形方法により成形し、所定の寸法
に裁断して製品とされる。The character eraser made of vinyl chloride resin of the present invention is manufactured in the same manner as in the conventional method. That is, in addition to a vinyl chloride-based resin and a plasticizer, a molding composition comprising a stabilizer, a coloring agent, a fragrance, and the like, if necessary, is kneaded and defoamed, and then molded by press molding, injection molding, extrusion molding, or the like. It is formed by a method and cut into predetermined dimensions to obtain a product.
以下、本発明を実施例を挙げて更に詳細に説明する
が、本発明はこれらにより何ら制限を受けるものではな
い。Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
実施例１ ポリ塩化ビニルペーストレジン（PSH−10、鐘淵化学工
業（株）） 100重量部 フタル酸オクチルベンジル（プラサイザーＢ−８、協和
発酵（株）） 30重量部 フタル酸ジオクチル 90重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約125℃、約15分間）し、製
品サンプルを得た。Example 1 100 parts by weight of polyvinyl chloride paste resin (PSH-10, Kaneka Corporation) 30 parts by weight of octylbenzyl phthalate (Plasizer B-8, Kyowa Hakko Co., Ltd.) 90 parts by weight of dioctyl phthalate 20 parts by weight of calcium 2 parts by weight of dibutyltin mercapto stabilizer The above ingredients are mixed, defoamed, poured into a molding die having a depth of about 10 mm, and press-molded (about 125 ° C, about 15 minutes). , Got product sample.
実施例２ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸オクチルベンジル（プラサイザーＢ−８） 30重量部 トリメリット酸トリオクチル 90重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約130℃、約17分間）し、製
品サンプルを得た。Example 2 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Octylbenzyl phthalate (Plasizer B-8) 30 parts by weight Trioctyl trimellitate 90 parts by weight Calcium carbonate 20 parts by weight Dibutyltin mercapto stabilizer 2 parts by weight After mixing and defoaming the above ingredients, the mixture was cast into a molding die having a depth of about 10 mm, and press-molded (about 130 ° C., about 17 minutes) to obtain a product sample.
実施例３ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸オクチルベンジル（プラサイザーＢ−８） 20重量部 フタル酸ジオクチル 95重量部 フタル酸ジシクロヘキシル（ユニモール6,6、バイエ
ル） ５重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約125℃、約15分間）し、製
品サンプルを得た。Example 3 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Octylbenzyl phthalate (Plasizer B-8) 20 parts by weight Dioctyl phthalate 95 parts by weight Dicyclohexyl phthalate (Unimol 6,6, Bayer) 5 parts by weight Carbonic acid 20 parts by weight of calcium 2 parts by weight of dibutyltin mercapto stabilizer The above ingredients are mixed, defoamed, poured into a molding die having a depth of about 10 mm, and press-molded (about 125 ° C, about 15 minutes). , Got product sample.
比較例１ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸ジブチル 30重量部 フタル酸ジオクチル 90重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約125℃、約15分間）し、サ
ンプルを得た。Comparative Example 1 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Dibutyl phthalate 30 parts by weight Dioctyl phthalate 90 parts by weight Calcium carbonate 20 parts by weight Dibutyltin mercapto-based stabilizer 2 parts by weight After foaming, the mixture was cast into a molding die having a depth of about 10 mm, and press-molded (about 125 ° C., about 15 minutes) to obtain a sample.
比較例２ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸ジヘプチル 120重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合例を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約125℃、約15分間）し、サ
ンプルを得た。Comparative Example 2 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Diheptyl phthalate 120 parts by weight Calcium carbonate 20 parts by weight Dibutyltin mercapto-based stabilizer 2 parts by weight A sample was cast into a 10 mm molding die and press-molded (about 125 ° C., about 15 minutes) to obtain a sample.
比較例３ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸ジオクチル 120重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約130℃、約15分間）し、サ
ンプルを得た。Comparative Example 3 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Dioctyl phthalate 120 parts by weight Calcium carbonate 20 parts by weight Dibutyltin mercapto-based stabilizer 2 parts by weight A sample was cast into a 10 mm molding die and press-molded (about 130 ° C., about 15 minutes) to obtain a sample.
比較例４ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 トリメリット酸トリオクチル 120重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約140℃、約20分間）し、サ
ンプルを得た。Comparative Example 4 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Trioctyl trimellitate 120 parts by weight 20 parts by weight calcium carbonate 2 parts by weight Dibutyltin mercapto-based stabilizer 2 parts by weight A sample was cast into a molding die of about 10 mm and press-molded (about 140 ° C., about 20 minutes) to obtain a sample.
比較例５ ポリ塩化ビニルペーストレジン（PSH−10） 100重量部 フタル酸ジオクチル 110重量部 フタル酸ジシクロヘキシル（ユニモール6,6） 10重量部 炭酸カルシウム 20重量部 ジブチル錫メルカプト系安定剤 ２重量部 上記の配合剤を混合、脱泡後、深さ約10mmの成形用金
型に注型し、プレス成形（約120℃、約15分間）し、サ
ンプルを得た。Comparative Example 5 Polyvinyl chloride paste resin (PSH-10) 100 parts by weight Dioctyl phthalate 110 parts by weight Dicyclohexyl phthalate (Unimol 6,6) 10 parts by weight Calcium carbonate 20 parts by weight Dibutyltin mercapto-based stabilizer 2 parts by weight After mixing and defoaming the compounding agent, the mixture was cast into a molding die having a depth of about 10 mm, and press-molded (about 120 ° C., about 15 minutes) to obtain a sample.
上記実施例１〜３、比較例１〜５で得られた製品サン
プル及びサンプルについて、消字率、移行性、硬度及び
ゲル化温度を測定し、その結果を第１表に掲げた。また
同時に総合的評価も掲記した。For the product samples and samples obtained in Examples 1 to 3 and Comparative Examples 1 to 5, the erasure rate, migration property, hardness and gelation temperature were measured. The results are shown in Table 1. At the same time, a comprehensive evaluation was posted.
尚、測定方法は下記の方法に従った。 In addition, the measuring method followed the following method.
１）字消率（％） JIS K 6050に基づく試験方法。1) Character erase rate (%) Test method based on JIS K 6050.
２）移行性 A.移行性試験法１） 字消しのサンプルを５×2.5×1cmに裁断し、直径6cm
のポリスチレンの板で挟み、更に、このポリスチレン板
の上からガラス板で挟んで、字消しのサンプルに荷重約
50g/cm2になるようおもりを置き、70℃で24時間放置し
た。ポリスチレン板の試験前と後の重量の差を字消しと
の接触面積で割り移行量（単位mg/cm2）を算出した。ま
た、ポリスチレン板の外観を観察し、試験前と後で変化
が無ければ○、試験後に表面が劣化した場合×と評価し
た。2) Transferability A. Transferability test method 1) The erased sample is cut into 5 x 2.5 x 1 cm, and the diameter is 6 cm.
Between the polystyrene plate and the glass plate from above the polystyrene plate.
A weight was placed at 50 g / cm 2 and left at 70 ° C. for 24 hours. The difference between the weight of the polystyrene plate before and after the test was divided by the contact area with the eraser to calculate the transfer amount (unit: mg / cm 2 ). Further, the appearance of the polystyrene plate was observed, and was evaluated as ○ if there was no change before and after the test, and × if the surface was deteriorated after the test.
B.移行性試験法２） 50℃で２週間放置した他は上記Ａと同様に測定、評価
した。B. Migration test 2) Measurement and evaluation were performed in the same manner as in A above except that the sample was left at 50 ° C. for 2 weeks.
C.移行試験法３） 常温で半年間放置した他は上記Ａと同様に測定、評価
した。C. Migration test method 3) Measurement and evaluation were performed in the same manner as in A above, except that the sample was left at room temperature for half a year.
D.移行性試験法４） JIS K 6050に基づく試験方法。D. Migration test 4) Test method based on JIS K 6050.
３）硬度 JIS K 6050に基づく試験方法。3) Hardness Test method based on JIS K 6050.
４）ゲル化温度 実施例と比較例の配合し、混合して得られたゾルを温
度勾配板上の深さ約2mmの溝に流し込み、この上にアル
ミ箔を置き、３分間加熱後、アルミ箔を温度の高い方向
から剥し、アルミ箔にゾルの付いた所の温度をゲル化温
度とした。4) Gelation temperature The sol obtained by blending and mixing the examples and the comparative examples was poured into a groove having a depth of about 2 mm on a temperature gradient plate, and an aluminum foil was placed thereon, and heated for 3 minutes. The foil was peeled from the higher temperature direction, and the temperature at the place where the sol was attached to the aluminum foil was defined as the gelation temperature.
〔作用・効果〕 叙上の通り、本発明によれば、消字性及び移行性、更
には成形性に優れた塩化ビニル系樹脂製字消材を提供す
ることができる。また本発明の字消材は適度の弾性を備
え、消去字の感触も良好である。更にまた、成形条件や
成形方法は従来の塩化ビニル系樹脂製字消材と変わらな
いため、組成物の配合を変えるだけでよい利点がある。 [Action and Effect] As described above, according to the present invention, a character erasing material made of a vinyl chloride resin excellent in character erasability and transferability, and further excellent in moldability can be provided. Further, the character eraser of the present invention has a moderate elasticity, and the feel of the erased character is good. Furthermore, since the molding conditions and molding method are the same as those of the conventional vinyl chloride resin character eraser, there is an advantage that only the composition of the composition needs to be changed.
Claims (6)
る字消材において、前記可塑剤がフタル酸オクチルベン
ジルと他の可塑剤との組合わせからなることを特徴とす
る塩化ビニル系樹脂からなる字消材。1. A character eraser comprising a vinyl chloride resin containing a plasticizer, wherein the plasticizer comprises a combination of octylbenzyl phthalate and another plasticizer. A character eraser.
％、残部が他の可塑剤である請求項１記載の字消材。2. The character eraser according to claim 1, wherein octylbenzyl phthalate is 10 to 50% by weight, and the balance is another plasticizer.
以上のフタル酸エステル系可塑剤、トリメリット酸エス
テル系可塑剤及び分子量1000以上のポリエステル系可塑
剤から選択される少なくとも１種からなる請求項１又は
２記載の字消材。3. The other plasticizer is at least one selected from phthalate plasticizers having 8 or more carbon atoms in the alkyl group, trimellitate plasticizers, and polyester plasticizers having a molecular weight of 1000 or more. The character eraser according to claim 1 or 2, comprising a seed.
る字消材において、前記可塑剤がフタル酸オクチルベン
ジルとフタル酸ジシクロヘキシルと他の可塑剤との組合
わせからなることを特徴とする塩化ビニル系樹脂からな
る字消材。4. A character eraser comprising a vinyl chloride resin containing a plasticizer, wherein the plasticizer comprises a combination of octylbenzyl phthalate, dicyclohexyl phthalate and another plasticizer. Character eraser made of vinyl resin.
％、フタル酸ジシクロヘキシルが２〜15重量％、残部が
他の可塑剤である請求項４記載の字消材。5. The character eraser according to claim 4, wherein octylbenzyl phthalate is 5 to 30% by weight, dicyclohexyl phthalate is 2 to 15% by weight, and the remainder is another plasticizer.
以上のフタル酸エステル系可塑剤、トリメリット酸エス
テル系可塑剤及び分子量1000以上のポリエステル系可塑
剤から選択される少なくとも１種からなる請求項４又は
５記載の字消材。6. The at least one other plasticizer selected from a phthalate plasticizer having 8 or more carbon atoms in an alkyl group, a trimellitate plasticizer and a polyester plasticizer having a molecular weight of 1000 or more. The character eraser according to claim 4 or 5, comprising a seed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23078188A JP2655278B2 (en) | 1988-09-14 | 1988-09-14 | Character eraser made of vinyl chloride resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23078188A JP2655278B2 (en) | 1988-09-14 | 1988-09-14 | Character eraser made of vinyl chloride resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0277463A JPH0277463A (en) | 1990-03-16 |
| JP2655278B2 true JP2655278B2 (en) | 1997-09-17 |
Family
ID=16913164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23078188A Expired - Fee Related JP2655278B2 (en) | 1988-09-14 | 1988-09-14 | Character eraser made of vinyl chloride resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2655278B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114874634A (en) * | 2022-05-07 | 2022-08-09 | 浙江镇洋发展股份有限公司 | Composite plasticizer, plasticized polyvinyl chloride and preparation method of plasticized polyvinyl chloride |
-
1988
- 1988-09-14 JP JP23078188A patent/JP2655278B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0277463A (en) | 1990-03-16 |
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