JPH0474384B2 - - Google Patents
Info
- Publication number
- JPH0474384B2 JPH0474384B2 JP61263849A JP26384986A JPH0474384B2 JP H0474384 B2 JPH0474384 B2 JP H0474384B2 JP 61263849 A JP61263849 A JP 61263849A JP 26384986 A JP26384986 A JP 26384986A JP H0474384 B2 JPH0474384 B2 JP H0474384B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- thermoplastic resin
- parts
- titanium oxide
- 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
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- Compositions Of Macromolecular Compounds (AREA)
Description
〔産業上の利用分野〕
本発明は熱可塑性樹脂組成物に関するものであ
る。さらに詳しくいえば、本発明はパール顔料に
よつて着色される化粧品ボトル等のプラスチツク
製品に好適に用いられる黄変防止性能を有し、か
つ熱安定性に優れた、酸化チタンでコーテイング
されたマイカを含有する熱可塑性樹脂組成物に関
する。
〔従来の技術〕
熱可塑性樹脂にパール色調を出すために顔料と
して酸化チタンでコーテイングされたマイカを使
用することが一般に行われている。一方、熱可塑
性樹脂の成形機での熱安定性と経時的な熱安定性
を保持するために、種々のフエーノル系安定材が
熱可塑性樹脂に添加されている。ところが、酸化
チタンでコーテイングされたマイカと分子量が小
さいフエノール系安定剤が添加されて使用される
と、熱可塑性樹脂を長時間放置したり、高温下や
紫外線の多い環境下に置いた場合黄色に変色する
（黄変）という欠点が生ずる。それゆえに黄変が
なく、かつ熱安定性がよい熱可塑性樹脂組成物が
望まれていた。
〔発明が解決しようとする問題点〕
本発明は、このような事情のもとで、酸化チタ
ンをコーテイングしたマイカを用いパール着色を
行つても黄変の問題が生じにくく、十分な熱安定
性能を有する熱可塑性樹脂組成物の提供を目的と
するものである。
〔問題点を解決するための手段〕
本発明者らは、前記目的を達成するために鋭意
研究を重ねた結果、酸化チタンでコーテイングさ
れたマイカを含有する熱可塑性樹脂に特定の酸化
防止剤を含有させることにより、その目的の達成
し得ることを見い出し、この知見に基づいて本発
明を完成するに至つた。
すなわち、本発明は(A)熱可塑性樹脂100重量部
に対して、(B)酸化チタンでコーテイングされたマ
イカ0.01〜10重量部および(C)有機亜リン酸エステ
ル酸化防止剤0.005〜2.0重量部を含有してなる熱
可塑性樹脂組成物を提供するものである。
本発明の組成物において、(A)成分の熱可塑性樹
脂としては、ポリエチレン、ポリプロピレン、ポ
リブテン等のポリオレフイン樹脂、ポルスチレ
ン、AS、ABS等のスチレン系樹脂、ナイロン
６、ナイロン６、６等のポリアミド樹脂、塩化ビ
ニル樹脂などのホモポリーあるいはコポリマーな
どが挙げられる。これらの熱可塑性樹脂はそれぞ
れ単独で用いてもよいし、２種以上組み合わせて
用いてもよい。これらの熱可塑性樹脂の中では、
ポリエチレン、ポリプロピレン等のポリオレフイ
ン樹脂が好適に用いられる。
(B)成分の酸化チタンでコーテイングされたマイ
カは通称パール顔料（パール剤）として知られて
いるものが用いられる。このものは、通常５〜
200μ程度の粘度を有しており、表面が酸化チタ
ンで10〜60％程度被覆されている。このようなも
のは、商品としてすでに市販されており、メルク
社からイリオジンという商品名で市販されている
もの等がある。これらはマイカにアナターゼ型、
ルチル型の酸化チタンをコーテイングしたもので
酸化チタンの複覆率、厚みの種類を変えて多種類
のものがあり、また更に酸化鉄をコーテイングし
たものも用いられる。
(C)成分の有機亜リン酸エステル酸化防止剤とし
ては、下記(1)、(2)または(3)で示されるものが好適
に用いられる。
（但し１≦ｎ≦５である）
（但し１≦ｐ≦５、１≦ｑ≦20である）
〔式中ＸはCaH2a+1で表されるアルキル基または
[Industrial Field of Application] The present invention relates to a thermoplastic resin composition. More specifically, the present invention is a mica coated with titanium oxide, which has anti-yellowing performance and excellent thermal stability, and which is suitably used in plastic products such as cosmetic bottles colored with pearl pigments. The present invention relates to a thermoplastic resin composition containing the following. [Prior Art] Mica coated with titanium oxide is generally used as a pigment to give a thermoplastic resin a pearlescent tone. On the other hand, various phenolic stabilizers are added to thermoplastic resins in order to maintain their thermal stability in molding machines and their thermal stability over time. However, when mica coated with titanium oxide and a phenolic stabilizer with a small molecular weight are added, the thermoplastic resin turns yellow if it is left for a long time or exposed to high temperatures or an environment with a lot of ultraviolet rays. The disadvantage is that it changes color (yellowing). Therefore, a thermoplastic resin composition that does not yellow and has good thermal stability has been desired. [Problems to be Solved by the Invention] Under these circumstances, the present invention provides a method that does not cause yellowing problems even when pearl coloring is performed using mica coated with titanium oxide, and has sufficient heat stability performance. The object of the present invention is to provide a thermoplastic resin composition having the following properties. [Means for Solving the Problem] As a result of extensive research to achieve the above object, the present inventors added a specific antioxidant to a thermoplastic resin containing mica coated with titanium oxide. The inventors have discovered that the objective can be achieved by containing the above-mentioned components, and have completed the present invention based on this knowledge. That is, the present invention uses (A) 100 parts by weight of a thermoplastic resin, (B) 0.01 to 10 parts by weight of mica coated with titanium oxide, and (C) 0.005 to 2.0 parts by weight of an organic phosphite ester antioxidant. The object of the present invention is to provide a thermoplastic resin composition containing the following. In the composition of the present invention, the thermoplastic resin as component (A) includes polyolefin resins such as polyethylene, polypropylene, and polybutene, styrenic resins such as polstyrene, AS, and ABS, and polyamide resins such as nylon 6, nylon 6, and 6. , homopoly or copolymers such as vinyl chloride resin. These thermoplastic resins may be used alone or in combination of two or more. Among these thermoplastic resins,
Polyolefin resins such as polyethylene and polypropylene are preferably used. The mica coated with titanium oxide, component (B), is commonly known as a pearl pigment (pearl agent). This item is usually 5~
It has a viscosity of about 200μ, and its surface is covered with about 10 to 60% titanium oxide. Such products are already commercially available, including one sold by Merck & Co. under the trade name Iriodin. These are mica anatase type,
There are many types of materials coated with rutile-type titanium oxide, with different duplication ratios and thicknesses of titanium oxide, and materials coated with iron oxide are also used. As the organic phosphite antioxidant of component (C), those shown in (1), (2) or (3) below are preferably used. (However, 1≦n≦5) (However, 1≦p≦5, 1≦q≦20) [In the formula, X is an alkyl group represented by C a H 2a+1 or
以下、本発明を実施例に基づいて詳細に説明す
るが、本発明はこれに限定されるものではない。
実施例１〜11および比較例１〜４
表に示された配合割合で各成分(A)〜(D)をスーパ
ーミキサーで混合し、40mmφ単軸押出機を用い溶
融混合し、樹脂温度230℃でペレツト化した。こ
のサンプルを190℃で圧縮成形して１mm厚さのプ
レスシートを作製し、黄色テストとオーブンライ
フテストを行い、黄変度とオーブンライフ時間を
測定した。また、造粒したペレツトのメルトイン
デツクス（MI）を測定した。測定法を下記に示
す。
(1) 黄色テスト
螢光灯（松下電工(株)製ハイライト
FLR40SW／Ｍ−Ｘ）を１ｍの距離から１mm厚
さのプレスシートへ４ケ月間射照し、その黄変
度をJIS K7103に準拠して測定した。
(2) オーブンライフテスト
120℃のオーブンに１mm厚さのプレスシート
より打ち抜いたJIS2号ダンベルを入れ、一定時
間後取り出し、折り曲げによつて脆化の有無を
判断した。脆化した時点をオーブンライフ時間
とし、経時熱安定性の指標とした。
(3) MI値
メルトインデツクスは加工時の熱安定性の指
標とした。
なお、実施例、比較例で使用した(A)、(B)、(C)、
(D)の各成分は次のとおりである。
(A)成分
A1 高密度ポリエチレン（MI＝0.36、密度＝
0.958）
A2 ホモポリプロピレン（MI＝0.36、密度＝
0.958）
A3 ポリスチレン（一般グレード）（MI＝0.35、
密度＝1.050）
(B)成分
B1 酸化チタンでコーテイングされたマイカ
（メルク社製 イリオジン 100 シルバーパール
酸化チタンの被覆率28％、粒度10〜60μ）
(C)成分
C1 イルガフオス168
C2 サンドスターブＰ−EPQ
C3 ウルトラノツクス626
(D)成分
D1 イルガノツクス1010
BHT2，６−ジ−ｔ−ブチル−４メチルフエノー
ル
本発明により得られた樹脂組成物は黄変度が小
さく、加工時の熱安定性に優れ、またフエノール
系酸化防止剤を用いたものは、経時的熱安定性に
著しく優れている。
Hereinafter, the present invention will be explained in detail based on Examples, but the present invention is not limited thereto. Examples 1 to 11 and Comparative Examples 1 to 4 Each component (A) to (D) was mixed in a super mixer at the blending ratio shown in the table, and melt-mixed using a 40 mmφ single screw extruder, and the resin temperature was 230°C. It was made into pellets. This sample was compression molded at 190°C to produce a 1 mm thick press sheet, and a yellow test and an oven life test were conducted to measure the degree of yellowing and oven life time. In addition, the melt index (MI) of the granulated pellets was measured. The measurement method is shown below. (1) Yellow test fluorescent light (Highlight manufactured by Matsushita Electric Works Co., Ltd.)
FLR40SW/M-X) was irradiated onto a 1 mm thick press sheet from a distance of 1 m for 4 months, and the degree of yellowing was measured in accordance with JIS K7103. (2) Oven life test A JIS No. 2 dumbbell punched from a 1 mm thick press sheet was placed in an oven at 120°C, taken out after a certain period of time, and the presence or absence of embrittlement was determined by bending. The time point at which it became brittle was defined as the oven life time, and was used as an index of thermal stability over time. (3) MI value Melt index was used as an indicator of thermal stability during processing. In addition, (A), (B), (C) used in Examples and Comparative Examples,
Each component of (D) is as follows. (A) Component A 1 High-density polyethylene (MI=0.36, density=
0.958) A 2 homopolypropylene (MI=0.36, density=
0.958) A 3 polystyrene (general grade) (MI=0.35,
(Density = 1.050) (B) Component B 1 Mica coated with titanium oxide (Merck Iriodin 100 Silver Pearl Titanium oxide coverage 28%, particle size 10-60 μ) (C) Component C 1 Irgafuos 168 C 2 Sand Starve P-EPQ C 3 Ultranox 626 (D) Component D 1 Irganox 1010 BHT2,6-di-t-butyl-4-methylphenol The resin composition obtained by the present invention has a small degree of yellowing, and has a high heat resistance during processing. It has excellent stability, and those using a phenolic antioxidant have extremely excellent thermal stability over time.
本発明により酸化チタンをコーテイングしたマ
イカを用いパール着色を行つても樹脂の黄変の問
題がなく、十分な熱安定性を有する熱可塑性樹脂
組成物が得られた。またさらに、経時的な熱安定
性も著しく優れる熱可塑性組成物が得られた。
According to the present invention, even when pearl coloring was performed using mica coated with titanium oxide, there was no problem of yellowing of the resin, and a thermoplastic resin composition having sufficient thermal stability was obtained. Furthermore, a thermoplastic composition was obtained which also has excellent thermal stability over time.
Claims (1)
チタンでコーテイングされたマイカ0.01〜10重量
部および(C)有機亜リン酸エステル酸化防止剤
0.005〜2.0重量部を含有してなる熱可塑性樹脂組
成物。 ２ (A)熱可塑性樹脂100重量部に対して、(B)酸化
チタンでコーテイングされたマイカ0.01〜10重量
部、(C)有機亜リン酸エステル酸化防止剤0.005〜
2.0重量部および(D)フエノール系酸化防止剤0.005
〜0.5重量部を含有してなる熱可塑性樹脂組成物。[Claims] 1 (A) 100 parts by weight of thermoplastic resin, (B) 0.01 to 10 parts by weight of mica coated with titanium oxide, and (C) organic phosphite ester antioxidant.
A thermoplastic resin composition containing 0.005 to 2.0 parts by weight. 2 (A) 100 parts by weight of thermoplastic resin, (B) 0.01 to 10 parts by weight of mica coated with titanium oxide, (C) 0.005 to 10 parts by weight of organic phosphite ester antioxidant
2.0 parts by weight and (D) phenolic antioxidant 0.005
A thermoplastic resin composition containing ~0.5 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26384986A JPS63118373A (en) | 1986-11-07 | 1986-11-07 | Thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26384986A JPS63118373A (en) | 1986-11-07 | 1986-11-07 | Thermoplastic resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63118373A JPS63118373A (en) | 1988-05-23 |
| JPH0474384B2 true JPH0474384B2 (en) | 1992-11-26 |
Family
ID=17395079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26384986A Granted JPS63118373A (en) | 1986-11-07 | 1986-11-07 | Thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118373A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2893430B2 (en) * | 1991-10-04 | 1999-05-24 | 花王株式会社 | Container |
| US5376698A (en) * | 1993-09-21 | 1994-12-27 | The Mearl Corporation | Polyolefin compositions containing coated mica particles to prevent yellowing and methods therefore |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5278949A (en) * | 1975-12-26 | 1977-07-02 | Shiseido Co Ltd | Resin compositions having metallic luster |
| JPS57143351A (en) * | 1981-03-02 | 1982-09-04 | Tokuyama Soda Co Ltd | Thermoplastic resin composition |
| JPS57200455A (en) * | 1981-06-05 | 1982-12-08 | Tokuyama Soda Co Ltd | Thermoplastic resin composition |
| JPS57202346A (en) * | 1981-06-08 | 1982-12-11 | Tokuyama Soda Co Ltd | Thermoplastic resin composition |
-
1986
- 1986-11-07 JP JP26384986A patent/JPS63118373A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63118373A (en) | 1988-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |