JPS60242098A - Eraser made of vinyl chloride resin - Google Patents
Eraser made of vinyl chloride resinInfo
- Publication number
- JPS60242098A JPS60242098A JP9896084A JP9896084A JPS60242098A JP S60242098 A JPS60242098 A JP S60242098A JP 9896084 A JP9896084 A JP 9896084A JP 9896084 A JP9896084 A JP 9896084A JP S60242098 A JPS60242098 A JP S60242098A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- chloride resin
- eraser
- transparency
- plasticizer
- 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
氷見ＢＡは極めて優れた透明性を有し、かつ消し性能に
も優れた塩化ビニル樹脂製字消しに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] Himi BA relates to a vinyl chloride resin eraser that has extremely excellent transparency and excellent erasing performance.
近年、字消しは市場の多様化、高級化に対応して、実用
性ばかシでなく形状９色彩等にも様々な工夫がなされて
いる。なかでも透明な字消しは装飾性の点で市場で根強
い要求がおる。従来からある透明字消しは、主に平均重
合度８ｏｏ以下の塩化ビニル樹脂を使用し、完全に溶融
させ成形することによシ、透明性を出すと同時に低重合
度に起因するもろさを生かし、消し能力を高めようとし
たものである。このタイプの透明字消しは透明性に優れ
るものの、乳化重合法によシ製造された塩化ビニル樹脂
に可塑剤、無機光てん剤を含有させた従来の字消しに比
べると消し能力、ソフト感にるが前記透明字消し程の透
明性を有しない。In recent years, in response to the diversification and increasing quality of the eraser market, various innovations have been made in terms of shape, nine colors, etc., as well as practicality. Among these, transparent erasers are in strong demand in the market for their decorative qualities. Conventional transparent erasers mainly use vinyl chloride resin with an average degree of polymerization of 8oo or less, and are completely melted and molded to achieve transparency while taking advantage of the brittleness caused by the low degree of polymerization. This was an attempt to improve the erasing ability. Although this type of transparent eraser has excellent transparency, it has poor erasing ability and soft feel compared to conventional erasers made using vinyl chloride resin manufactured by emulsion polymerization and containing plasticizers and inorganic brighteners. However, it does not have the same transparency as the transparent eraser mentioned above.
このため本発明者は、先に記したような欠点の改良され
た透明字消しを開発すべく鋭意検討した結果、乳化剤量
が少なく、重合度の高いペースト用塩化ビニル樹脂を主
成分とし、これに塩化ビニル樹脂に近い屈折率をもつ可
塑剤を含有させたグラスチゾルは低温加熱成形が可能で
メジ、これによシ透明性、消し能力の優れた字消しか得
られることを見い出し、本発明に到達した。For this reason, the inventor of the present invention has made extensive studies to develop a transparent eraser that has improved the above-mentioned drawbacks, and has developed a new material that uses a paste-grade vinyl chloride resin with a small amount of emulsifier and a high degree of polymerization as the main component. It was discovered that Glastisol, which contains a plasticizer with a refractive index close to that of vinyl chloride resin, can be molded by heating at low temperatures, and that it is possible to obtain an eraser with excellent transparency and erasability. Reached.
すなわち本発明は、平均重合度が８００を越え、好まし
くは１０００以上であシ、乳化剤の残存量が０．５重量
−以下であるペースト用塩化ビニル樹脂と屈折率が１，
５０〜１．６０である可塑剤とを主成分とすることを特
徴とする透明性の優れた塩化ビニル樹脂製字消しに関す
るものである。That is, the present invention uses a vinyl chloride resin for paste having an average degree of polymerization of more than 800, preferably 1000 or more, and a residual amount of emulsifier of 0.5 weight or less, and a refractive index of 1.
The present invention relates to an eraser made of vinyl chloride resin and having excellent transparency, which is characterized by containing as a main component a plasticizer having a molecular weight of 50 to 1.60.
本発明において使用されるペースト用塩化ビニル樹脂は
、通常の乳化重合法又は乳懸漏電合法によりｌ！！遺さ
れたものであって、透明性の点では塩化ビニルの単独重
合体が好ましいが、塩化ビニルを主体とする、これと酢
酸ビニル、エチレン、アクリル酸メチル、メタクリル酸
メチル等の通常の共単量体との共重合体も使用すること
ができる。The vinyl chloride resin for paste used in the present invention is prepared by a conventional emulsion polymerization method or a milk suspension leakage method. ! From the point of view of transparency, vinyl chloride homopolymers are preferred, but vinyl chloride-based homopolymers and ordinary copolymers such as vinyl acetate, ethylene, methyl acrylate, and methyl methacrylate can also be used. Copolymers with polymers can also be used.
本発明においてはペースト用塩化ビニル樹脂が使用され
るので、低温でのダル化、溶融性が良く、加工幅が広い
ため、透明性を有し、かつ字消しに必要な適度のもろさ
を有する成形品を得ることができる。なお、通常の懸濁
重合体を用いた場合、透明性を得るためには完全な溶融
状態まで加工度を上げる必要がちシ、このため平均重合
度が８００を越えると適度Ａもろさを有する成形品を得
ることが困難である０
また、塩化ビニル樹脂中に残存する乳化剤量は透明性の
点で０．５重量−以下に限定され、平均重合一度は、消
し能力の点で８００を越えることが必要である。In the present invention, vinyl chloride resin for paste is used, so it has good dulling and melting properties at low temperatures, and has a wide processing range, so it is transparent and molded with the appropriate brittleness necessary for erasing. You can get the goods. In addition, when using a normal suspension polymer, it is necessary to increase the degree of processing to a completely molten state in order to obtain transparency, so if the average degree of polymerization exceeds 800, the molded product will have moderate A brittleness. Furthermore, the amount of emulsifier remaining in the vinyl chloride resin is limited to 0.5% by weight or less in terms of transparency, and the average polymerization rate cannot exceed 800% in terms of erasing ability. is necessary.
々お、重合時に使用される乳化剤としては、特に制限さ
れないが、例えば、高級脂肪酸塩、アルキルベンゼンス
ルホン酸塩、ｙアルキルスルホコハク酸塩、アルキル硫
酸塩、高級アルコール硫酸塩、アルキルナフタレンスル
ホン酸塩、アルキルジフェニルエーテルジスルフオン酸
塩、ポリオキシエチレンアルキルエーテル硫酸塩、アル
カンスルホン酸塩、高分子ポリカルボン酸塩などのアニ
オン系乳化剤；Ｉリオキシエチレンアルキルエーテル、
ポリグロピレンアルキルエーテル、ポリオキシエチレン
高級アルコールエーテル、ポリオキシエチレンアルキル
フェニルエーテル、ポリオキシエチレンφオキシプロピ
レンブロックポリマー、ソルビタンアルキレート、Ｉリ
オキシェチレンソルビタンアルキレート、グルセロール
アルキレート、ポリエチレングリコールアルキレートな
どのアニオン系乳化剤などの少なくとも一種が挙げられ
る。所望に応じて高級アルコール、高級脂肪酸などの乳
化助剤も併用することが出来る。特に透明性の点で優れ
るのはアルキルベンゼンスルホン酸塩、ジアルキルスル
ホンコハク酸塩、高分子ポリカルボン酸塩、アルキルジ
フェニルエーテルジスルフォン酸塩などの分子内にベン
ゼンｆｆ１６るいはエステル基を含有するアニオン系乳
化剤又は、ノニオン系乳化剤と高級アルコール又は高級
脂肪酸とを主成分とする乳化剤を使用した乳化重合塩化
ビニル樹脂である。The emulsifier used during polymerization is not particularly limited, but includes, for example, higher fatty acid salts, alkylbenzene sulfonates, y-alkyl sulfosuccinates, alkyl sulfates, higher alcohol sulfates, alkylnaphthalene sulfonates, alkyl Anionic emulsifiers such as diphenyl ether disulfonate, polyoxyethylene alkyl ether sulfate, alkanesulfonate, and polymeric polycarboxylate; I-lyoxyethylene alkyl ether;
Polyglopylene alkyl ether, polyoxyethylene higher alcohol ether, polyoxyethylene alkylphenyl ether, polyoxyethylene φ oxypropylene block polymer, sorbitan alkylate, I-rioxyethylene sorbitan alkylate, glycerol alkylate, polyethylene glycol At least one type of anionic emulsifier such as alkylate may be used. Emulsifying aids such as higher alcohols and higher fatty acids can also be used in combination, if desired. Particularly excellent in terms of transparency are anionic emulsifiers containing benzene ff16 or ester groups in the molecule, such as alkylbenzene sulfonates, dialkyl sulfone succinates, high-molecular polycarboxylate salts, and alkyldiphenyl ether disulfonate salts. Alternatively, it is an emulsion polymerized vinyl chloride resin using an emulsifier whose main components are a nonionic emulsifier and a higher alcohol or a higher fatty acid.
可塑剤は字消しに適度の柔軟性及び摩擦抵抗を与えるた
めに必須であるが、本発明においては、さらに透明性を
向上させるために屈折率が塩化ビニル樹脂のそれに近゛
い１．５０〜１，６０を有する可塑剤を使用することが
必要であシ、これによシ、低温成形においてダル化溶融
が不充分でおっても、透明性を高めることができる。屈
折率が１．５０〜１．６０の範囲にある可塑剤は例えば
、トリクレジルホスフェート、ブチルベンジルフタレー
ト、フレノルジフェニルホスフェート、キシレニルジフ
ェニルホスフェート等である。これらの可塑剤は単独で
使用してもよく、ダル化溶融性、柔軟性等字消しの加工
、性能に必要な要因を調節するために、他の可塑剤、例
えにジオクチルツクレート、ジオクチルアジイード等と
混合し、屈折率を１．５０〜１．６０の範囲内に調整し
使用することもできる。A plasticizer is essential to give appropriate flexibility and frictional resistance to the eraser, but in the present invention, in order to further improve transparency, a plasticizer with a refractive index of 1.50 to 1.50, which is close to that of vinyl chloride resin, is used. It is necessary to use a plasticizer having a molecular weight of 1.60, thereby increasing the transparency even if dulling and melting is insufficient during low-temperature molding. Examples of the plasticizer having a refractive index in the range of 1.50 to 1.60 include tricresyl phosphate, butylbenzyl phthalate, frenoldiphenyl phosphate, and xylenyl diphenyl phosphate. These plasticizers may be used alone or may be combined with other plasticizers, such as dioctyl tslate, dioctyl azide, etc., to adjust the factors necessary for processing and performance such as dullness, meltability, flexibility, etc. It can also be used by mixing with Eid or the like to adjust the refractive index within the range of 1.50 to 1.60.
可塑剤の使用量は、通常塩化ビニル樹Ｗ１１００重量部
当た９５０〜１５０重量部、好ましくは７０〜１００重
量部である０
本発明の字消しを製造するにあたっては前記の塩化ビニ
ル樹脂、可塑剤に必要に応じて安定剤、着色剤、香料な
どを加え、ホ・々−トミキサー、チェンジカッミキサー
、ニーグー等によって混合してプラスチゾルとし、圧縮
′成形、注形、押出成形等によシ、好ましくは１５０℃
以下の温度で成形することによって得られる。The amount of plasticizer used is usually 950 to 150 parts by weight, preferably 70 to 100 parts by weight per 1100 parts by weight of vinyl chloride resin. Stabilizers, colorants, fragrances, etc. are added to the mixture as necessary, and the plastisol is mixed using a hot mixer, a change cup mixer, a nygoo, etc., and the plastisol is preferably molded by compression molding, casting, extrusion molding, etc. is 150℃
Obtained by molding at the following temperatures:
以下に実施例を示す。部数は重量基準である。 Examples are shown below. Number of copies is based on weight.
なお、測定、評価は下記によシ行った。Note that measurements and evaluations were performed as described below.
（１）乳化剤量
塩化ビニル樹脂を９０℃のメチルアルコールで２０時間
抽出し、抽出液を蒸発乾固させた後の残留物を計量し、
下記の式によ請求めた。(1) Amount of emulsifier Extract vinyl chloride resin with methyl alcohol at 90°C for 20 hours, weigh the residue after evaporating the extract to dryness,
It was billed using the formula below.
（２）平均重合度 ＪＩＳ Ｋ６７２１により測定した。(2) Average degree of polymerization Measured according to JIS K6721.
（３）ｆレス温度
金型温度を水銀温度計で測定した。プレス圧力は２０
ｋｇ／ｃｍ Ｓプレス時間は２０分とした。(3) f-res temperature The mold temperature was measured with a mercury thermometer. Press pressure is 20
kg/cm S press time was 20 minutes.
（４）透明性
白色紙に黒色マジックインキで約０．３ ｃｍ幅の線を
引く。この上に厚み０．５ ｃｍの字消しサンプルを置
き、線の色、輪郭を肉眼によシ判定し、透明性の度合を
次の四段階で示した。(4) Draw a line approximately 0.3 cm wide on transparent white paper using black marker ink. An eraser sample with a thickness of 0.5 cm was placed on top of this, and the color and outline of the lines were judged with the naked eye, and the degree of transparency was evaluated on the following four levels.
◎ 極めて良好 ○ 良 好 △悪い Ｘ 極めて悪い （５）消し能力 市販のレポート用紙に３Ｈ，２１（、Ｈ，ＨＢ。◎Extremely good ○ Good △Bad X Extremely bad (5) Erasing ability 3H, 21 (, H, HB) on commercially available report paper.
Ｂの５種類の鉛線を用いて長さ２−１幅０．１６ｎの線
を引いた。なお筆圧は一定にし鉛筆を３往復させた。A line with a length of 2-1 and a width of 0.16n was drawn using five types of lead wire B. Note that the writing pressure was kept constant and the pencil was moved back and forth three times.
消し能力は、字消しを３往復させた後の線の濃度を肉眼
によシ観察することによって、次の四段階で総合的に判
定した。The erasing ability was comprehensively evaluated in the following four stages by visually observing the line density after the eraser was moved back and forth three times.
◎ 極めて良好
○ 良 好
Δ悪い
× 極めて悪い
実施例１
第１表に示す配合成分をらい潰機で混合し、グラスチゾ
ルを得た。このゾラスチゾルを横５個、縦６ ｃｍ 、
厚み０．５謂の金型に充てんし、スチームブレスで成形
した。得られた字消しの性能を第１表に示す。◎ Very good ○ Good Δ Bad × Very bad Example 1 The ingredients shown in Table 1 were mixed in a crusher to obtain Glastisol. This Zolastisol is 5 pieces horizontally and 6 cm long,
It was filled into a mold with a thickness of 0.5 and molded using a steam breath. Table 1 shows the performance of the eraser obtained.
第１表よシ、塩化ビニル樹脂として乳化剤量が０．７重
量−のものを用いた場合（実験番号２）には透明性が不
良であシ、平均重合度が７００のものを用いた場合（実
験番号３）には消し能力が不良である。また、充填剤が
入ると（実験番号１）当然透明性が不良となる。それに
対して本発明の字消しは透明性、消し能力とも優れてい
る。According to Table 1, when a vinyl chloride resin with an emulsifier amount of 0.7 weight - was used (experiment number 2), transparency was poor, and when a vinyl chloride resin with an average degree of polymerization of 700 was used. (Experiment No. 3) had poor erasing ability. Furthermore, if a filler is added (Experiment No. 1), the transparency will naturally become poor. In contrast, the eraser of the present invention has excellent transparency and erasability.
実施例２
可塑剤を第２表に示すものに変えたほかは実施例１実験
番号５と同様の実験を行った。結果を第２表に示す。Example 2 An experiment similar to Experiment No. 5 in Example 1 was conducted except that the plasticizer was changed to one shown in Table 2. The results are shown in Table 2.
本発明例においては、可塑剤の１１１類によ）最適成形
温度は多少異なるものの、透明性、消し能力共に優れた
字消しか得られた。一方、屈折率１．５０未満の可塑剤
を用いた比較例においては成形条件を変えて吃透明性及
び消し能力を共に満足させることができない。In the examples of the present invention, although the optimum molding temperature was slightly different (depending on the class 111 plasticizer), an eraser with excellent transparency and erasability was obtained. On the other hand, in the comparative example using a plasticizer with a refractive index of less than 1.50, it is not possible to satisfy both the transparency and erasability by changing the molding conditions.
特許出願人 日本ゼオン株式会社Patent applicant: Zeon Corporation
Claims (1)
．５重量％以下でおるペースト用塩化ビニル樹脂と屈折
率が１．５０〜１．６０である可塑剤とを主成分とする
ことを特徴とする透明性の優れた塩化ビニル樹脂製字消
し。Average degree of polymerization exceeds 800 and residual amount of emulsifier is 0
．． An eraser made of vinyl chloride resin with excellent transparency, characterized in that the main components are a vinyl chloride resin for paste with a content of 5% by weight or less and a plasticizer with a refractive index of 1.50 to 1.60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9896084A JPS60242098A (en) | 1984-05-17 | 1984-05-17 | Eraser made of vinyl chloride resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9896084A JPS60242098A (en) | 1984-05-17 | 1984-05-17 | Eraser made of vinyl chloride resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60242098A true JPS60242098A (en) | 1985-12-02 |
Family
ID=14233641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9896084A Pending JPS60242098A (en) | 1984-05-17 | 1984-05-17 | Eraser made of vinyl chloride resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60242098A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01294758A (en) * | 1988-05-20 | 1989-11-28 | Shiide Rubber Kogyo Kk | Clay eraser |
| JPH0935387A (en) * | 1995-07-14 | 1997-02-07 | Mitsumi Electric Co Ltd | Disk device and method for taking out disk in case of emergency |
| JP2013095013A (en) * | 2011-10-31 | 2013-05-20 | Pilot Corporation | Friction body and thermochromic writing utensil |
| JP2014008773A (en) * | 2012-07-03 | 2014-01-20 | Sakura Color Products Corp | Character eraser |
| JP2014177053A (en) * | 2013-03-15 | 2014-09-25 | Mitsubishi Pencil Co Ltd | Erasing tool |
| JP2016130018A (en) * | 2016-03-16 | 2016-07-21 | 株式会社パイロットコーポレーション | Manufacturing method of friction body and thermochromic writing utensil |
| JP2016155389A (en) * | 2016-04-28 | 2016-09-01 | 株式会社パイロットコーポレーション | Friction body and thermochromic writing utensil |
| JP2021030708A (en) * | 2019-08-29 | 2021-03-01 | 株式会社シード | Eraser, eraser composition commonly used for pencils and writing instruments containing thermal discoloration ink, and eraser body for thermal discoloration ink |
-
1984
- 1984-05-17 JP JP9896084A patent/JPS60242098A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01294758A (en) * | 1988-05-20 | 1989-11-28 | Shiide Rubber Kogyo Kk | Clay eraser |
| JPH0935387A (en) * | 1995-07-14 | 1997-02-07 | Mitsumi Electric Co Ltd | Disk device and method for taking out disk in case of emergency |
| JP2013095013A (en) * | 2011-10-31 | 2013-05-20 | Pilot Corporation | Friction body and thermochromic writing utensil |
| JP2014008773A (en) * | 2012-07-03 | 2014-01-20 | Sakura Color Products Corp | Character eraser |
| JP2014177053A (en) * | 2013-03-15 | 2014-09-25 | Mitsubishi Pencil Co Ltd | Erasing tool |
| JP2016130018A (en) * | 2016-03-16 | 2016-07-21 | 株式会社パイロットコーポレーション | Manufacturing method of friction body and thermochromic writing utensil |
| JP2016155389A (en) * | 2016-04-28 | 2016-09-01 | 株式会社パイロットコーポレーション | Friction body and thermochromic writing utensil |
| JP2021030708A (en) * | 2019-08-29 | 2021-03-01 | 株式会社シード | Eraser, eraser composition commonly used for pencils and writing instruments containing thermal discoloration ink, and eraser body for thermal discoloration ink |
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