JPH0581623B2 - - Google Patents
Info
- Publication number
- JPH0581623B2 JPH0581623B2 JP10215789A JP10215789A JPH0581623B2 JP H0581623 B2 JPH0581623 B2 JP H0581623B2 JP 10215789 A JP10215789 A JP 10215789A JP 10215789 A JP10215789 A JP 10215789A JP H0581623 B2 JPH0581623 B2 JP H0581623B2
- Authority
- JP
- Japan
- Prior art keywords
- iron oxide
- pet resin
- weight
- spherical
- present
- 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
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 28
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical group [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 3
- 238000004040 coloring Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、透明性を有する中空成形体をブロー
成形法によつて得る際に使用されるポリエチレン
テレフタレート樹脂（PET樹脂）組成物に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a polyethylene terephthalate resin (PET resin) composition used to obtain transparent hollow molded bodies by blow molding.
従来の技術
PET樹脂は、軽量で機械的強度が強く、ガス
バリアー性、透明性等の特性が優れているため、
近年、飲料用ボトル等の容器に用いられている。
しかし、紫外線も透過してしまうため、このまま
で飲料用ボトルとして用いるとボトル内の飲料の
変質が起こる。そこで、特開昭58−160268では、
有機系の紫外線吸収剤を添加して変質を防いでい
るが、有機系のものは耐候性が劣り、ブリードが
起こる等の問題があつた。この問題を解決するた
めに、特開昭55−50055では、Fe2O3・xH2Ｏの
組成の酸化鉄をPET中に添加することが提案さ
れている。Conventional technology PET resin is lightweight, has strong mechanical strength, and has excellent properties such as gas barrier properties and transparency.
In recent years, it has been used for containers such as beverage bottles.
However, since ultraviolet rays also pass through, if used as a beverage bottle as is, the beverage inside the bottle will deteriorate. Therefore, in JP-A-58-160268,
Organic ultraviolet absorbers are added to prevent deterioration, but organic ultraviolet absorbers have poor weather resistance and have problems such as bleeding. In order to solve this problem, Japanese Patent Application Laid-Open No. 55-50055 proposes adding iron oxide having a composition of Fe 2 O 3 .xH 2 O to PET.
発明が解決しようとする課題
従来の針状酸化鉄は、分散性が悪く凝集してい
るため、それを含有する樹脂組成物を用いてブロ
ー成形法によつてボトルを造るとボトルの口元の
色調の変化が大きな問題となつていた。また、特
開昭55−50055の酸化鉄Fe2O3・xH2Ｏは、結晶
水を含んでいるため熱安定性が非常に悪い。Problems to be Solved by the Invention Conventional acicular iron oxide has poor dispersibility and aggregates, so when a bottle is made using a blow molding method using a resin composition containing it, the color tone of the mouth of the bottle changes. Changes were becoming a major problem. Further, the iron oxide Fe 2 O 3 .xH 2 O disclosed in JP-A-55-50055 contains crystal water and therefore has very poor thermal stability.
上記の問題点を解決するために種々検討した結
果、本発明者は、PET樹脂に対してヘマタイト
構造の球形酸化鉄を添加することを特徴とする
PET樹脂着色組成物を提供するに至つた。
As a result of various studies to solve the above-mentioned problems, the present inventor has developed a method characterized by adding spherical iron oxide with a hematite structure to PET resin.
We have now provided a PET resin coloring composition.
本発明に使用するヘマタイト構造の酸化鉄は球
状であることが特徴で、特に酸化鉄粒子の長短径
比が0.7以上の球状の形状を有しているのが望ま
しい。 The iron oxide having a hematite structure used in the present invention is characterized by being spherical, and it is particularly desirable that the iron oxide particles have a spherical shape with a major axis ratio of 0.7 or more.
また、球状ヘマタイト構造酸化鉄の平均粒径は
0.01〜0.1μmが好ましい。粒径が0.1μmを超える
と透明性が劣り、また、0.01μm未満では分散性
に問題が生じる。また、PET樹脂100重量部に対
し、球状酸化鉄添加量は、0.001〜1.0重量部が好
ましい。0.001重量部未満では紫外線吸収能が劣
り、1.0重量部を超えるとPET樹脂の透明度が悪
くなるからである。 In addition, the average particle size of iron oxide with spherical hematite structure is
0.01-0.1 μm is preferable. If the particle size exceeds 0.1 μm, transparency will be poor, and if the particle size is less than 0.01 μm, problems will arise in dispersibility. Further, the amount of spherical iron oxide added to 100 parts by weight of PET resin is preferably 0.001 to 1.0 parts by weight. This is because if it is less than 0.001 part by weight, the ultraviolet absorption ability will be poor, and if it exceeds 1.0 part by weight, the transparency of the PET resin will deteriorate.
本発明に使用するヘマタイト構造の透明球形酸
化鉄は第二鉄塩水溶液中に水酸化アルカリ、炭酸
アルカリ、アンモニアのうち少なくとも一種をPH
値が６〜10になるように添加し、沈澱させた後、
乾燥して製造する。 The transparent spherical iron oxide with a hematite structure used in the present invention has a PH of at least one of alkali hydroxide, alkali carbonate, and ammonia in an aqueous ferric salt solution.
After adding it to a value of 6 to 10 and precipitating it,
Manufactured by drying.
紫外線吸収能としては、波長400mmでの透過率
が20％以下であることが望ましい。また、本発明
では、酸化鉄の他に、調色のためカーボンブラツ
ク等の色顔料を混合してもよい。 As for the ultraviolet absorption ability, it is desirable that the transmittance at a wavelength of 400 mm is 20% or less. Further, in the present invention, in addition to iron oxide, a color pigment such as carbon black may be mixed for color toning.
実施例 本発明を実施例にて詳しく説明する。Example The present invention will be explained in detail with reference to Examples.
実施例 １
PET樹脂100重量部に対して、長短径比0.8、平
均粒径0.03μmのヘマタイト構造の球状酸化鉄粒
子を0.06重量部添加し、射出成形にPET樹脂の厚
さ100μmの透明板を得たところ、第１図ａに示す
ような良好な透明性、紫外線吸収を示した。Example 1 To 100 parts by weight of PET resin, 0.06 parts by weight of spherical iron oxide particles having a hematite structure with a length ratio of 0.8 and an average particle size of 0.03 μm were added, and a transparent plate of PET resin with a thickness of 100 μm was injection molded. When obtained, it showed good transparency and ultraviolet absorption as shown in Figure 1a.
比較例 １
PET樹脂100重量部に対してアスペクト比８
で、長軸0.1μmの針状酸化鉄粉を0.1重量部添加
し、射出成形によりPET樹脂の厚さ100μmの透
明板を得た。第１図ｂに示すように、透明性およ
び紫外線吸収率は、実施例１に比べて劣つてい
た。Comparative example 1 Aspect ratio 8 for 100 parts by weight of PET resin
Then, 0.1 part by weight of acicular iron oxide powder with a long axis of 0.1 μm was added, and a transparent plate of PET resin with a thickness of 100 μm was obtained by injection molding. As shown in FIG. 1b, the transparency and ultraviolet absorption rate were inferior to those of Example 1.
発明の効果
本発明のPET樹脂組成物は、耐候性に優れ、
ブリード現象もみられず、また形状が球形である
酸化鉄のため分散性が優れており、ボトルの口元
の色調変化もない褐色の容器となり、従来のガラ
ス製の容器に比較して、軽量で、機械的強度が優
れたものが得られる。Effects of the Invention The PET resin composition of the present invention has excellent weather resistance,
There is no bleeding phenomenon, and the spherical shape of iron oxide has excellent dispersibility, resulting in a brown container with no color change at the mouth of the bottle, and is lighter than conventional glass containers. A product with excellent mechanical strength can be obtained.
第１図は波長に対する透過率曲線でａは実施例
１、ｂは比較例１の場合である。
FIG. 1 is a transmittance curve with respect to wavelength, and a shows the case of Example 1, and b shows the case of Comparative Example 1.
Claims (1)
マタイト構造の球形酸化鉄を添加することを特徴
とするポリエチレンテレフタレート樹脂着色組成
物。1. A polyethylene terephthalate resin coloring composition characterized by adding spherical iron oxide having a hematite structure to a polyethylene terephthalate resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10215789A JPH02281070A (en) | 1989-04-21 | 1989-04-21 | Polyethylene terephthalate resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10215789A JPH02281070A (en) | 1989-04-21 | 1989-04-21 | Polyethylene terephthalate resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02281070A JPH02281070A (en) | 1990-11-16 |
| JPH0581623B2 true JPH0581623B2 (en) | 1993-11-15 |
Family
ID=14319893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10215789A Granted JPH02281070A (en) | 1989-04-21 | 1989-04-21 | Polyethylene terephthalate resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02281070A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5919848A (en) * | 1997-10-03 | 1999-07-06 | Eastman Chemical Company | Magnetic polyester compositions |
| US6022920A (en) * | 1998-01-23 | 2000-02-08 | Eastman Chemical Company | Method for the production of clear bottles having improved reheat |
-
1989
- 1989-04-21 JP JP10215789A patent/JPH02281070A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02281070A (en) | 1990-11-16 |
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