JP3550833B2 - Resin coloring composition for liquid bleach containers - Google Patents

Resin coloring composition for liquid bleach containers Download PDF

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Publication number
JP3550833B2
JP3550833B2 JP29387695A JP29387695A JP3550833B2 JP 3550833 B2 JP3550833 B2 JP 3550833B2 JP 29387695 A JP29387695 A JP 29387695A JP 29387695 A JP29387695 A JP 29387695A JP 3550833 B2 JP3550833 B2 JP 3550833B2
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Prior art keywords
resin
acid
weight
coloring composition
titanium dioxide
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JP29387695A
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Japanese (ja)
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JPH09137003A (en
Inventor
進 宮下
奏 佐久間
育子 柴崎
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Artience Co Ltd
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Toyo Ink Mfg Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、過酸化水素水を含有する液体漂白剤の容器として適した樹脂着色組成物に関する。
【0002】
【従来の技術】
従来より衣料の漂白には、過酸化水素水が用いられている。この過酸化水素水は通常、密封性の高いポリエチレン等のプラスチック容器に充填され家庭用液体漂白剤として市販されている。
また、このプラスチック容器は内容物保護、デザイン性などのために、顔料によって着色されている。
【0003】
【発明が解決しようとする課題】
過酸化水素水は、アルカリ、粉状白金、二酸化マンガンその他の微細な粉末、粗雑な面をもつ固体など、種々のものが触媒となって容易に分解し、酸素を放つことが知られている。
この為、過酸化水素水系液体漂白剤を入れたプラスチック容器を二酸化チタン等で着色すると、過酸化水素水が分解し酸素ガスが発生し、過酸化水素水の漂白能力が著しく低下したり、発生したガスによって、容器が変形したりするという問題があった。
この問題に対し、過酸化水素水を入れる容器としては、内側に未着色樹脂の層を有する多層構造の容器が用いられている。しかし、多層構造の容器は製造工程が複雑になり、コストアップになるという問題が生じた。
【0004】
【課題を解決するための手段】
本発明者らは、上記の問題を解決すべく鋭意検討した結果、酸変性樹脂にて表面をコーティングした二酸化チタンを着色剤として用いると、二酸化チタンによる過酸化水素水の分解が抑制されることを発見し、本発明に至った。
すなわち、本発明は、ポリオレフィン樹脂20〜99.95重量%と酸変性樹脂でコーティングした二酸化チタン顔料0.05〜80重量%を含有することを特徴とする液体漂白剤容器用樹脂着色組成物である。
【0005】
【発明の実施の形態】
以下本発明を更に詳細に説明する。
本発明で使用するポリオレフィン樹脂としては、ポリエチレン、ポリプロピレン等が挙げられ、ポリエチレンとしては低密度、中密度、高密度のポリエチレンが、またポリプロピレンとしてはホモ、ブロック、ランダムポリプロピレンが挙げられ、高密度のポリエチレンがが好ましい。
【0006】
本発明で使用する酸変性樹脂としては、不飽和二重結合を有するモノマーと、不飽和二重結合および極性基を有するモノマーとを共重合せしめたものや、ポリオレフィン樹脂に不飽和二重結合および極性基を有するモノマーをグラフトせしめたもの等が挙げられ、顔料表面をコーティングするということから、低分子量の方が好ましい。
【0007】
不飽和二重結合を有するモノマーとしては、例えばα−オレフィン、アリルモノマー、N−ビニルモノマー、ビニルエーテル、(メタ)アクリル酸エステルモノマー等が挙げられる。
α−オレフィンとしては、エチレン、プロピレン、ブチレン、イソブチレン、ペンテン、1−ヘキセン、1−ヘプテン、1−オクテン、1−ノネン、1−デセン、1−ドデセン、1−テトラドデセン、1−ヘキサドデセン、1−オクタデセン、1−エイコセン、1−ドコセン、1−テトラコセン、1−ヘキサコセン、1−オクタコセン、1−トリアコンテンが挙げられる。市販品としては、ダイアレン208(C20〜28)、ダイアレン30(C30以上)(三菱化成(株))、VYBAR#260(C30以上)、VYBAR#604(C30以上)(ペトライト(株))等が挙げられる。
【0008】
上記のような不飽和二重結合を有するモノマーと共重合せしめる、不飽和二重結合および極性基を有するモノマーとしては、カルボキシル基を有するモノマーが好ましく、例えばアクリル酸、メタクリル酸、マレイン酸、フマル酸、イタコン酸、シトラコン酸、グルタコン酸、クロトン酸、テロラヒドロフタール酸、無水マレイン酸、無水イタコン酸、無水シトラコン酸、無水グルタコン酸、無水テロラヒドロフタール酸が挙げられ、マレイン酸、無水マレイン酸、アクリル酸が好ましい。
【0009】
上記不飽和二重結合および極性基を有するモノマーは、不飽和二重結合を有するモノマーと共重合せしめる他、ポリオレフィン樹脂にグラフト反応せしめても良い。酸変性樹脂の製造に用いられるポリオレフィン樹脂としては前記したポリオレフィン樹脂が挙げられる。
【0010】
また、本発明において用いられる酸変性樹脂は、上記の極性基を有する共重合体やグラフト体中の極性基の一部または全てを金属塩によって中和した、いわゆるアイオノマーであっても良い。
中和に用いられる金属塩としては、水酸化ナトリウム、水酸化カリウム、炭酸カルシウム、炭酸マグネシウム等が挙げられる。
【0011】
酸変性樹脂との配合量としては、二酸化チタン100重量部に対して、0.05〜100重量部が好ましく、10〜50重量部がさらに好ましい。酸変性樹脂との配合量が0.05よりも少ないと、過酸化水素水の分解抑制しにくくなり、逆に100重量部を越えると成形性や物性に悪影響を及ぼしやすい。
【0012】
本発明で使用する二酸化チタンとしては、粒度分布0.05〜0.45μm、平均粒径0.20〜0.30μmであることが好ましく、ルチル型、アナターゼ型いずれであってもよい。
【0013】
本発明において、二酸化チタンは酸変性樹脂でコーティングしてなるものであり、バンバリーミキサー、3本ロール等によって二酸化チタンと酸変性樹脂を混練するなどして予め酸変性樹脂でコーティングしてなる二酸化チタンを得、係る二酸化チタンを用いて本発明の樹脂着色組成物を製造する。
【0014】
本発明の樹脂着色組成物は、ポリオレフィン樹脂20〜99.95重量%と、詳述した酸変性樹脂をコーティングした二酸化チタン顔料0.05〜80重量%を含有するものであり、好ましくはポリオレフィン樹脂60〜99.95重量%と、酸変性樹脂をコーティングした二酸化チタン顔料0.05〜40重量%含有するものである。相対的にポリオレフィン樹脂が少なくなると、成形しにくくなり、逆に相対的にポリオレフィン樹脂が多くなると色が薄くなってしまう。
【0015】
なお、本発明においては、上記の樹脂着色組成物に必要に応じて、他の成分を種々添加することが出来る。例えば、紫外線吸収剤、滑剤、帯電防止剤、その他の公知のポリマー用添加剤を必要量添加することが出来る。
【0016】
【実施例】
以下、実施例により本発明を具体的に説明する。
実施例1
エチレン−アクリル酸共重合体を炭酸カルシウムで中和したアイオノマー20重量部と二酸化チタン20重量部を配合し、3本ロールにて予備混練を行った。さらに、高密度ポリエチレン(比重0.957、MFR6.0g/10min.)60重量部を加えて押出機にて溶融混練して、樹脂着色成形物を得た。
【0017】
実施例2
エチレン−無水マレイン酸共重合体10重量部、二酸化チタン20重量部およびポリエチレンワックス(分子量 4300 、比重 0.924)10重量部を配合し、3本ロールにて予備混練を行う。さらに、高密度ポリエチレン60重量部を加えて押出機出溶融混練して、樹脂着色成形物を得た。
【0018】
実施例3〜4、比較例1
表1の組成に従って、実施例1と同様にして、樹脂着色成形物を得た。
【0019】
評価方法
実施例、比較例で得た樹脂着色成形物30gを200ml三角フラスコに入れ、過酸化水素水5%水溶液100mlを注入し、温度40℃の条件でウォーターバス中で加温し、分解発生するガスを補集した。
過酸化水素水5%水溶液100mlのみの三角フラスコからのガス発生量を測定し、これをブランクとして、ガスの発生量を経時的に測定した。
その結果を表1に示す。
【0020】
【表1】

Figure 0003550833
【0021】
【発明の効果】
本発明の樹脂着色組成物は、過酸化水素溶液と接触した状態においても、過酸化水素の分解を抑制・防止し、ガスの発生を抑制・防止できる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a resin coloring composition suitable as a container for a liquid bleach containing hydrogen peroxide solution.
[0002]
[Prior art]
Conventionally, aqueous hydrogen peroxide has been used for bleaching clothing. This aqueous hydrogen peroxide is usually filled in a plastic container made of polyethylene or the like having a high sealing property, and is commercially available as a liquid bleach for household use.
The plastic container is colored with a pigment for protection of contents and design.
[0003]
[Problems to be solved by the invention]
Hydrogen peroxide water is known to easily decompose and release oxygen by various catalysts such as alkali, powdered platinum, manganese dioxide and other fine powders, and solids with rough surfaces. .
For this reason, if a plastic container containing a hydrogen peroxide-based liquid bleach is colored with titanium dioxide or the like, the hydrogen peroxide solution is decomposed and oxygen gas is generated, and the bleaching ability of the hydrogen peroxide solution is significantly reduced or generated. There is a problem that the container is deformed due to the generated gas.
To solve this problem, a container having a multilayer structure having an uncolored resin layer inside is used as a container for storing the hydrogen peroxide solution. However, the multi-layered container has a problem that the manufacturing process is complicated and the cost is increased.
[0004]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve the above-described problems, and as a result, when titanium dioxide coated on the surface with an acid-modified resin is used as a coloring agent, decomposition of hydrogen peroxide by titanium dioxide is suppressed. Have been found, and the present invention has been achieved.
That is, the present invention relates to a resin coloring composition for a liquid bleach container, comprising 20 to 99.95% by weight of a polyolefin resin and 0.05 to 80% by weight of a titanium dioxide pigment coated with an acid-modified resin. is there.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail.
Examples of the polyolefin resin used in the present invention include polyethylene, polypropylene, and the like.Polyethylene includes low-density, medium-density, high-density polyethylene, and polypropylene includes homo, block, and random polypropylene. Polyethylene is preferred.
[0006]
As the acid-modified resin used in the present invention, a monomer obtained by copolymerizing a monomer having an unsaturated double bond with a monomer having an unsaturated double bond and a polar group, or a polyolefin resin having an unsaturated double bond and Examples thereof include those obtained by grafting a monomer having a polar group, and the lower molecular weight is more preferable since the pigment surface is coated.
[0007]
Examples of the monomer having an unsaturated double bond include α-olefins, allyl monomers, N-vinyl monomers, vinyl ethers, (meth) acrylate monomers, and the like.
Examples of the α-olefin include ethylene, propylene, butylene, isobutylene, pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-dodecene, 1-tetradodecene, 1-hexadedecene, Octadecene, 1-eicosene, 1-docosene, 1-tetracosene, 1-hexacocene, 1-octacocene, and 1-triaconten. Commercial products include Dialen 208 (C20-28), Dialen 30 (C30 or more) (Mitsubishi Kasei), VYBAR # 260 (C30 or more), VYBAR # 604 (C30 or more) (Petrite Co., Ltd.) and the like. No.
[0008]
As the monomer having an unsaturated double bond and a polar group to be copolymerized with the monomer having an unsaturated double bond as described above, a monomer having a carboxyl group is preferable, such as acrylic acid, methacrylic acid, maleic acid, and fumaric acid. Acids, itaconic acid, citraconic acid, glutaconic acid, crotonic acid, terolahydrophthalic acid, maleic anhydride, itaconic anhydride, citraconic anhydride, glutaconic anhydride, terolahydrophthalic anhydride, maleic acid, anhydride Maleic acid and acrylic acid are preferred.
[0009]
The monomer having an unsaturated double bond and a polar group may be copolymerized with a monomer having an unsaturated double bond, or may be subjected to a graft reaction to a polyolefin resin. Examples of the polyolefin resin used for producing the acid-modified resin include the above-described polyolefin resins.
[0010]
Further, the acid-modified resin used in the present invention may be a so-called ionomer in which a part or all of the polar group in the copolymer or the graft having the polar group is neutralized with a metal salt.
Examples of the metal salt used for neutralization include sodium hydroxide, potassium hydroxide, calcium carbonate, magnesium carbonate and the like.
[0011]
The compounding amount with the acid-modified resin is preferably from 0.05 to 100 parts by weight, more preferably from 10 to 50 parts by weight, based on 100 parts by weight of titanium dioxide. When the compounding amount with the acid-modified resin is less than 0.05, it is difficult to suppress the decomposition of the hydrogen peroxide solution, and when it exceeds 100 parts by weight, moldability and physical properties are easily adversely affected.
[0012]
The titanium dioxide used in the present invention preferably has a particle size distribution of 0.05 to 0.45 μm and an average particle size of 0.20 to 0.30 μm, and may be any of rutile type and anatase type.
[0013]
In the present invention, the titanium dioxide is coated with an acid-modified resin, and the titanium dioxide is previously coated with the acid-modified resin by kneading the titanium dioxide and the acid-modified resin by using a Banbury mixer, three rolls or the like. And the resin coloring composition of the present invention is produced using the titanium dioxide.
[0014]
The resin coloring composition of the present invention contains 20 to 99.95% by weight of a polyolefin resin and 0.05 to 80% by weight of a titanium dioxide pigment coated with an acid-modified resin described in detail, and is preferably a polyolefin resin. It contains 60 to 99.95% by weight and 0.05 to 40% by weight of a titanium dioxide pigment coated with an acid-modified resin. If the polyolefin resin is relatively small, molding becomes difficult, and if the polyolefin resin is relatively large, the color becomes light.
[0015]
In the present invention, various other components can be added to the above-mentioned resin coloring composition as needed. For example, UV absorbers, lubricants, antistatic agents, and other known additives for polymers can be added in required amounts.
[0016]
【Example】
Hereinafter, the present invention will be specifically described with reference to examples.
Example 1
20 parts by weight of an ionomer obtained by neutralizing an ethylene-acrylic acid copolymer with calcium carbonate and 20 parts by weight of titanium dioxide were blended, and preliminarily kneaded with a three-roll mill. Further, 60 parts by weight of high-density polyethylene (specific gravity: 0.957, MFR: 6.0 g / 10 min.) Was added and melt-kneaded by an extruder to obtain a resin colored molded product.
[0017]
Example 2
10 parts by weight of an ethylene-maleic anhydride copolymer, 20 parts by weight of titanium dioxide, and 10 parts by weight of a polyethylene wax (molecular weight: 4300, specific gravity: 0.924) are blended and pre-kneaded with a three-roll mill. Further, 60 parts by weight of high-density polyethylene was added and melt-kneaded out of an extruder to obtain a resin-colored molded product.
[0018]
Examples 3 and 4, Comparative Example 1
According to the composition of Table 1, in the same manner as in Example 1, a resin colored molded product was obtained.
[0019]
Evaluation method 30 g of the resin-colored molded product obtained in Examples and Comparative Examples was placed in a 200-ml Erlenmeyer flask, 100 ml of a 5% aqueous solution of hydrogen peroxide was injected, and the mixture was heated in a water bath at a temperature of 40 ° C. to cause decomposition. Gas was collected.
The amount of gas generated from an Erlenmeyer flask containing only 100 ml of a 5% aqueous solution of hydrogen peroxide was measured, and this was used as a blank to measure the amount of gas generated over time.
Table 1 shows the results.
[0020]
[Table 1]
Figure 0003550833
[0021]
【The invention's effect】
The resin coloring composition of the present invention can suppress and prevent the decomposition of hydrogen peroxide and can suppress and prevent the generation of gas even in the state of being in contact with the hydrogen peroxide solution.

Claims (1)

ポリオレフィン樹脂20〜99.95重量%と酸変性樹脂をコーティングした二酸化チタン顔料0.05〜80重量%を含有することを特徴とする液体漂白剤容器用樹脂着色組成物。A resin coloring composition for a liquid bleach container, comprising 20 to 99.95% by weight of a polyolefin resin and 0.05 to 80% by weight of a titanium dioxide pigment coated with an acid-modified resin.
JP29387695A 1995-11-13 1995-11-13 Resin coloring composition for liquid bleach containers Expired - Lifetime JP3550833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29387695A JP3550833B2 (en) 1995-11-13 1995-11-13 Resin coloring composition for liquid bleach containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29387695A JP3550833B2 (en) 1995-11-13 1995-11-13 Resin coloring composition for liquid bleach containers

Publications (2)

Publication Number Publication Date
JPH09137003A JPH09137003A (en) 1997-05-27
JP3550833B2 true JP3550833B2 (en) 2004-08-04

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Country Status (1)

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