JPH0433812B2 - - Google Patents
Info
- Publication number
- JPH0433812B2 JPH0433812B2 JP58164137A JP16413783A JPH0433812B2 JP H0433812 B2 JPH0433812 B2 JP H0433812B2 JP 58164137 A JP58164137 A JP 58164137A JP 16413783 A JP16413783 A JP 16413783A JP H0433812 B2 JPH0433812 B2 JP H0433812B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- polypropylene
- present
- radiation
- ethylene
- 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
- 239000000203 mixture Substances 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 13
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 9
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 7
- BJELTSYBAHKXRW-UHFFFAOYSA-N 2,4,6-triallyloxy-1,3,5-triazine Chemical compound C=CCOC1=NC(OCC=C)=NC(OCC=C)=N1 BJELTSYBAHKXRW-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 description 6
- 239000008188 pellet Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- FMZUHGYZWYNSOA-VVBFYGJXSA-N (1r)-1-[(4r,4ar,8as)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C([C@@H]1OC(O[C@@H]([C@@H]1O1)[C@H](O)CO)C=2C=CC=CC=2)OC1C1=CC=CC=C1 FMZUHGYZWYNSOA-VVBFYGJXSA-N 0.000 description 1
- NGFBEQCLQRWZGA-UHFFFAOYSA-N C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C Chemical compound C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.C=CC(C(=O)O)C1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C NGFBEQCLQRWZGA-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000000649 benzylidene group Chemical group [H]C(=[*])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- XITRBUPOXXBIJN-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-4-yl) decanedioate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XITRBUPOXXBIJN-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 239000008395 clarifying agent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229940087101 dibenzylidene sorbitol Drugs 0.000 description 1
- 229920005674 ethylene-propylene random copolymer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
本発明は、ポリプロピレン組成物に関し、更に
詳しくは、放射線を照射しても劣化しにくいなど
の特性を有するポリプロピレン組成物に関する。
ポリプロピレンの成形品は、医療器具などとし
て使用される場合、殺菌を目的としてγ線等の放
射線が照射されることがある。その際、その成形
品は、それ自信が放射線により劣化を起こし、成
形品の引張り伸びが著しく低下して非常に脆くな
り、ひいては、黄変やクラツクの発生等の問題を
起こし、実質上問題があつた。
放射線照射によるポリオレフインの劣化を防止
する方法として、特開昭55−19199、特開昭58−
42638、特開昭58−49737等の各号公報に示される
ようにヒンダードアミン系化合物又はフエノール
系化合物等を樹脂に添加する方法が知られてい
る。
通常のポリプロピレン組成物では2.5〜
3.0Mradのコバルト60照射によつて劣化が進行
し、照射後の伸びが著しく低下する。そして前記
の添加剤による耐放射線性の付与は、しかしなが
ら、その結果は未だ十分には発揮されず、しばし
ば添加剤の着色による成形品の商品価値を損なう
ものであつた。
本発明者らは、叙上の状況に鑑み、研究した結
果、本発明に到達したものであつて、本発明は、
ポリプロピレン又はエチレン−プロピレン共重合
体100重量部に対しトリアリルイソシアヌレート
及び／またはトリアリルシアヌレート0.05〜１重
量部よりなるポリプロピレン組成物、に存する。
本発明に使用するエチレン−プロピレン共重合
体にはランダム共重合体とブロツク共重合体とが
あり、本発明の組成物を、放射線を照射しても劣
化しない用途に使用する場合には、ランダム共重
合体が好ましい。これら樹脂の溶融指数（MFI，
JIS Ｋ 6758により、荷重2.16Kg、温度230℃。
以下同じ。）は特に限定されるものではなく、成
形方法によつて好ましい範囲は異なるが、射出成
形の場合、MFI＝１〜50の範囲である。
本発明の組成物に放射線照射した場合、MFI
の変化が非常に小さく、又本発明の組成物による
成形品の劣化、黄変を防ぐことができる。
トリアリルイソシアヌレート及び又はトリアリ
ルシアヌレートの量は、樹脂100重量部に対して
0.05〜１重量部が好ましく、更には0.05〜0.5重量
部がより好ましい。0.05重量部未満ではその効果
に乏しく、樹脂が劣化して引張り伸びが低下し、
１重量部を越えると引張り伸びが低下する傾向に
ある。
本発明の組成物には、耐寒性を付与するため
に、ポリプロピレンやエチレン−プロピレンゴム
等をブレンドし、又は、透明性を付与するため
に、安息香酸ナトリウム、ジベンジリデンソルビ
トール、ビス（Ｐ−メチルベンジリデン）ソルビ
トール等の透明化剤、核剤を添加し、又はその他
目的に応じて、酸化防止剤、紫外線吸収剤、滑
剤、帯電防止剤、アンチブロツキング剤、分割
剤、中和剤等を添加することができる。
本発明の組成物は、いかように成形品としても
よいが、一般には、パウダー状のポリプロピレン
又はエチレン−プロピレン共重合体にトリアリル
イソシアヌレート又は、トリアリルシアヌレート
及び必要ならば前記各種のブレンド物又は添加剤
を加えて、適当に混合した後、押出機にて溶融混
練してペレツト化し、このペレツトは射出成形等
により成形品となる。
次に実施例と比較例によつて本発明を更に具体
的に説明する。
実施例１〜５、比較例１〜４
以下の組成からなるペレツトであるポリマー
、ポリマー、ポリマーに、それぞれ第１表
に記載の通りのトリアリルイソシアヌレート及び
又はトリアリルシアヌレートを加え、混合した後
40mmφ押出機にて220℃で押出し、ペレツト化し
た。このペレツトを使用して、10オンス射出成形
機にて射出温度230℃、射出圧力750Kg／cm2で２mm
厚、10cm×12cmの平板を得た。これにコバルト60
線源にてガンマ線を3.0Mrad照射して評価した。
その結果を第１表に示した。
ポリマー
(1) エチレン−プロピレンランダムコポリマー
エチレン含有 1.8重量％
MFI 18ｇ／10分
(2) テトラキス［メチレン（３，５−ジ−ｔ−ブ
チル−４−ヒドロキシフエニル）プロピオネー
ト］メタン 0.05重量％
(3) カルシウムステアレート
0.05重量％
ポリマー
(1) ポリプロピレンホモポリマー、MFI20
(2) テトラキス［メチレン（３，５−ジ−ｔ−ブ
チル−４−ヒドロキシフエニル）プロピオネー
ト］メタン 0.05重量％
(3) カルシウムステアレート
0.05重量％
ポリマー
(1) ポリプロピレンホモポリマー、MFI20
(2) テトラキス［メチレン（３，５−ジ−ｔ−ブ
チル−４−ヒドロキシフエニル）プロピオネー
ト］メタン、チバガイギー社製、
0.05重量％
(3) サノールLS944（ヒンダードアミン系添加
剤）、三共製、 0.05重量％
なおトリアリルイソシアヌレート（TAIC、以
下同じ。）は構造式：
で表わされ、この実施例では、日本化成製のもの
を用い、トリアリルシアヌレート（TAC、以下
同じ。）は構造式：
で表わされ、この実施例では、和光純薬製の製品
コード番号201−02292のものを使用した。
The present invention relates to a polypropylene composition, and more particularly to a polypropylene composition that has characteristics such as being resistant to deterioration even when irradiated with radiation. When polypropylene molded products are used as medical instruments, they may be irradiated with radiation such as gamma rays for the purpose of sterilization. In this case, the molded product itself deteriorates due to the radiation, and the tensile elongation of the molded product decreases significantly, making it extremely brittle, which in turn causes problems such as yellowing and cracking, which is practically a problem. It was hot. As a method for preventing the deterioration of polyolefin due to radiation irradiation, Japanese Patent Application Laid-Open Nos. 1983-19199 and 1982-
42638, JP-A-58-49737, and other publications, a method of adding a hindered amine compound or a phenol compound to a resin is known. 2.5~ for normal polypropylene compositions
Deterioration progresses due to cobalt 60 irradiation at 3.0 Mrad, and the elongation after irradiation decreases significantly. However, the effects of imparting radiation resistance using the above-mentioned additives have not yet been fully demonstrated, and the commercial value of molded products has often been impaired due to the coloring of the additives. In view of the above circumstances, the present inventors have arrived at the present invention as a result of research, and the present invention includes:
A polypropylene composition comprising 0.05 to 1 part by weight of triallyl isocyanurate and/or triallyl cyanurate per 100 parts by weight of polypropylene or ethylene-propylene copolymer. The ethylene-propylene copolymers used in the present invention include random copolymers and block copolymers. Copolymers are preferred. Melt index (MFI,
According to JIS K 6758, the load is 2.16Kg and the temperature is 230℃.
same as below. ) is not particularly limited, and the preferable range varies depending on the molding method, but in the case of injection molding, MFI is in the range of 1 to 50. When the composition of the present invention is irradiated, the MFI
The composition of the present invention can prevent molded articles from deterioration and yellowing. The amount of triallyl isocyanurate and/or triallyl cyanurate is based on 100 parts by weight of resin.
The amount is preferably 0.05 to 1 part by weight, and more preferably 0.05 to 0.5 part by weight. If it is less than 0.05 part by weight, the effect will be poor, the resin will deteriorate and the tensile elongation will decrease,
If it exceeds 1 part by weight, the tensile elongation tends to decrease. The composition of the present invention may be blended with polypropylene or ethylene-propylene rubber to impart cold resistance, or may be blended with sodium benzoate, dibenzylidene sorbitol, bis(P-methyl Add clarifying agents and nucleating agents such as benzylidene) sorbitol, or add antioxidants, ultraviolet absorbers, lubricants, antistatic agents, anti-blocking agents, splitting agents, neutralizing agents, etc., depending on the purpose. Can be added. The composition of the present invention may be formed into a molded article in any way, but generally, it is prepared by mixing powdered polypropylene or ethylene-propylene copolymer with triallyl isocyanurate or triallyl cyanurate and, if necessary, a blend of the above various types. After adding materials or additives and mixing appropriately, the mixture is melt-kneaded in an extruder to form pellets, and the pellets are made into molded products by injection molding or the like. Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples. Examples 1 to 5, Comparative Examples 1 to 4 Triallyl isocyanurate and/or triallyl cyanurate as listed in Table 1 were added to polymers, polymers, and polymers, which were pellets having the following compositions, and mixed. rear
It was extruded at 220°C using a 40mmφ extruder to form pellets. Using this pellet, the injection temperature was 230℃ and the injection pressure was 750Kg/cm 2 to 2mm using a 10oz injection molding machine.
A flat plate with a thickness of 10 cm x 12 cm was obtained. Cobalt 60 in this
Evaluation was performed by irradiating gamma rays at 3.0 Mrad with a radiation source.
The results are shown in Table 1. Polymer (1) Ethylene-propylene random copolymer Ethylene content 1.8% by weight MFI 18g/10 min (2) Tetrakis [methylene (3,5-di-t-butyl-4-hydroxyphenyl)propionate] methane 0.05% by weight (3 ) Calcium stearate 0.05% by weight Polymer (1) Polypropylene homopolymer, MFI20 (2) Tetrakis[methylene(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane 0.05% by weight (3) Calcium stearate Rate 0.05% by weight Polymer (1) Polypropylene homopolymer, MFI20 (2) Tetrakis [methylene (3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane, manufactured by Ciba Geigy, 0.05% by weight (3) Sanol LS944 (hindered amine additive), manufactured by Sankyo, 0.05% by weight Triallylisocyanurate (TAIC, the same hereinafter) has the structural formula: In this example, one manufactured by Nippon Kasei was used, and the triallyl cyanurate (TAC, the same hereinafter) has the structural formula: In this example, product code number 201-02292 manufactured by Wako Pure Chemical Industries was used.
【表】
以上の結果から、本発明の組成物は、放射線を
照射しても、MFI、引張り伸び率、黄色度の変
化が小さく、耐放射線にすぐれていることがわか
り、放射線滅菌が必要な医療器具、食品包装資材
や原子力関連資材等に使用することができるもの
である。[Table] From the above results, it was found that the composition of the present invention shows small changes in MFI, tensile elongation, and yellowness even when irradiated with radiation, and has excellent radiation resistance. It can be used for medical equipment, food packaging materials, nuclear power related materials, etc.
Claims (1)
重合体100重量部に対しトリアリルイソシアヌレ
ート及び／又はトリアリルシアヌレート0.05〜１
重量部よりなる耐放射線性ポリプロピレン組成
物。1 0.05 to 1 triallyl isocyanurate and/or triallyl cyanurate per 100 parts by weight of polypropylene or ethylene-propylene copolymer
A radiation-resistant polypropylene composition consisting of parts by weight.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58164137A JPS6058445A (en) | 1983-09-08 | 1983-09-08 | Polypropylene composition |
| US06/648,226 US4594376A (en) | 1983-09-07 | 1984-09-07 | Propylene polymer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58164137A JPS6058445A (en) | 1983-09-08 | 1983-09-08 | Polypropylene composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6058445A JPS6058445A (en) | 1985-04-04 |
| JPH0433812B2 true JPH0433812B2 (en) | 1992-06-04 |
Family
ID=15787447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58164137A Granted JPS6058445A (en) | 1983-09-07 | 1983-09-08 | Polypropylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6058445A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165152A (en) * | 1974-10-21 | 1976-06-05 | Gen Electric | |
| JPS5273948A (en) * | 1975-12-18 | 1977-06-21 | Furukawa Electric Co Ltd:The | Production of extremelythin cross-linked plastic film |
| JPS5319365A (en) * | 1976-08-07 | 1978-02-22 | Furukawa Electric Co Ltd:The | Preparation of inorganic compoudn filled polyolefine composition molding articles |
| JPS53102355A (en) * | 1977-02-18 | 1978-09-06 | Furukawa Electric Co Ltd:The | Crosslinking of polyolefin under atmospheric pressure |
| JPS5831100A (en) * | 1981-08-14 | 1983-02-23 | Koji Ugajin | Electrolytic polishing method for stainless steel |
-
1983
- 1983-09-08 JP JP58164137A patent/JPS6058445A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165152A (en) * | 1974-10-21 | 1976-06-05 | Gen Electric | |
| JPS5273948A (en) * | 1975-12-18 | 1977-06-21 | Furukawa Electric Co Ltd:The | Production of extremelythin cross-linked plastic film |
| JPS5319365A (en) * | 1976-08-07 | 1978-02-22 | Furukawa Electric Co Ltd:The | Preparation of inorganic compoudn filled polyolefine composition molding articles |
| JPS53102355A (en) * | 1977-02-18 | 1978-09-06 | Furukawa Electric Co Ltd:The | Crosslinking of polyolefin under atmospheric pressure |
| JPS5831100A (en) * | 1981-08-14 | 1983-02-23 | Koji Ugajin | Electrolytic polishing method for stainless steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6058445A (en) | 1985-04-04 |
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