JPH01123843A - Rubber composition - Google Patents
Rubber compositionInfo
- Publication number
- JPH01123843A JPH01123843A JP62281557A JP28155787A JPH01123843A JP H01123843 A JPH01123843 A JP H01123843A JP 62281557 A JP62281557 A JP 62281557A JP 28155787 A JP28155787 A JP 28155787A JP H01123843 A JPH01123843 A JP H01123843A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- polyol
- parts
- weight
- component
- 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 30
- 239000005060 rubber Substances 0.000 title claims abstract description 30
- 239000000203 mixture Substances 0.000 title claims abstract description 17
- -1 poly(oxyethylene) Polymers 0.000 claims abstract description 30
- 229920005862 polyol Polymers 0.000 claims abstract description 29
- 150000003077 polyols Chemical class 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000006229 carbon black Substances 0.000 claims abstract description 6
- 229920003244 diene elastomer Polymers 0.000 claims abstract description 6
- 239000012169 petroleum derived wax Substances 0.000 claims abstract description 4
- 235000019381 petroleum wax Nutrition 0.000 claims abstract description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims description 13
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 238000004073 vulcanization Methods 0.000 abstract description 6
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 3
- 239000005061 synthetic rubber Substances 0.000 abstract description 3
- 244000043261 Hevea brasiliensis Species 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract description 2
- 229920003052 natural elastomer Polymers 0.000 abstract description 2
- 229920001194 natural rubber Polymers 0.000 abstract description 2
- 150000001451 organic peroxides Chemical class 0.000 abstract description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 6
- 230000003712 anti-aging effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は改良された外観を与えるゴム組成物に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to rubber compositions that provide improved appearance.
（従来の技術）
通常のツエン系ゴム配合物は大気中のオゾン、酸素、紫
外線、熱等により劣化し、この防止策として老化防止剤
やワックス等を添加するが、配合物表面に析出し、Ｉ）
−フェニレンノアミン系の老化防止剤の場合には赤褐色
の斑点が生じたり、ワックスの白色粉が析出して外観品
質の豆で問題であった。 −
（発明が解決しようとする問題点）
本発明の目的は改良された外観を与えるゴム組成物を提
供することにある。(Prior art) Typical tsene-based rubber compounds deteriorate due to ozone, oxygen, ultraviolet rays, heat, etc. in the atmosphere, and anti-aging agents and waxes are added to prevent this, but they precipitate on the surface of the compound. I)
- In the case of phenylenenoamine-based anti-aging agents, reddish-brown spots appeared and white powder of wax was precipitated, which caused problems in the appearance of beans. - (Problems to be Solved by the Invention) It is an object of the present invention to provide a rubber composition that provides an improved appearance.
（問題点を解決するための手段）
本発明は補強剤の大部分がカーボンブラックであるジエ
ン系ゴム配合物のゴム１００重量部に対してポリオキシ
プロピレンポリオール、ポリオキシテトラメチレンポリ
オール及びポリオキシエチレンオキシブロビレンボリオ
ールの群から選ばれた少なくとも１種をＱ、１〜１０重
量部配合したことを特徴とするゴム組成物に係る。(Means for Solving the Problems) The present invention provides polyoxypropylene polyol, polyoxytetramethylene polyol and polyoxyethylene based on 100 parts by weight of rubber of a diene rubber compound in which most of the reinforcing agent is carbon black. The present invention relates to a rubber composition characterized in that Q, 1 to 10 parts by weight of at least one selected from the group of oxybrobylene polyols is blended.
尚、従来ポリオキシエチレンポリ・オールをシリカ補強
ゴム組成物に配合することは公知であるが、これは加硫
促進剤がシリカに吸着されて、活性点がｆｔ頻されて促
進作用がなくなるのを防止するために、前もってシリカ
の吸着点をポリオキシエチレンポリオールで封鎖するた
めであり、いわゆる加硫反応の活性剤としての効果のた
めであり外観性は改良されない。これはポリオキシエチ
レンポリオールがシリカに吸着され移行しないことによ
る他、シリカ補強ゴム組成物は透明に近く光の拡散反射
が少なくポリオキシエチレンポリオールを過剰に配合し
ても殆ど外観性は変わらないがらである。一方、ポリオ
キシプロピレンポリオール、ポリオキシテトラメチレン
ポリオール、ポリオキシエチレンオキシプロピレンポリ
オールをゴム組成物に配合することは従来、行われてい
なかった。It is conventionally known to blend polyoxyethylene polyol into a silica-reinforced rubber composition, but this is because the vulcanization accelerator is adsorbed to the silica and the active sites are multiplied and the accelerating effect is lost. In order to prevent this, the adsorption points of silica are blocked in advance with polyoxyethylene polyol, and this is because it acts as an activator for the vulcanization reaction, and the appearance is not improved. This is because the polyoxyethylene polyol is adsorbed to the silica and does not migrate, and the silica-reinforced rubber composition is transparent and has low diffuse reflection of light, so even if an excessive amount of polyoxyethylene polyol is blended, the appearance does not change much. It is. On the other hand, conventionally, polyoxypropylene polyol, polyoxytetramethylene polyol, and polyoxyethylene oxypropylene polyol have not been blended into rubber compositions.
本発明では補強剤の大部分としてカーボンブラックを使
用し、シリカを用いる場合は、該補強剤の３０重量％以
下とするのが好ましい。シリカが補強剤の３０重重量を
越えると、本来外観性向上に役立つポリオキシプロピレ
ンポリオール、ポリオキシテトラメチレンポリオール、
ポリオキシエチレンオキシプロピレンポリオール（以下
、ポリオキシプロピレンポリオール等という）をシリカ
が吸着してしまい、本発明の効果を阻害するためと考え
られる。このためシリカを配合する場合ポリオキシプロ
ピレンポリオール等はシリカの１０重量％以上配合する
のが好ましい。In the present invention, carbon black is used as the majority of the reinforcing agent, and when silica is used, it is preferably 30% by weight or less of the reinforcing agent. When silica exceeds 30% by weight of the reinforcing agent, polyoxypropylene polyol, polyoxytetramethylene polyol, which originally helps improve appearance,
This is thought to be because silica adsorbs polyoxyethylene oxypropylene polyol (hereinafter referred to as polyoxypropylene polyol, etc.), thereby inhibiting the effects of the present invention. For this reason, when blending silica, it is preferable to blend polyoxypropylene polyol or the like in an amount of at least 10% by weight of the silica.
本発明で使用するポリオキシプロピレンポリオール等は
その平均分子量が４００〜５０００のものが望ましい。The polyoxypropylene polyol used in the present invention preferably has an average molecular weight of 400 to 5,000.
４００未満ではゴムとの相溶性がよくゴム表面に析出し
に（＜、５０００を越えるとゴム中を移行しにくく、や
はりゴム表面に析出しにくく、結果として外観性向上に
寄与しない。ポリオキシプロピレンポリオール等はゴム
１００部（重量部、以下同様）に対して０．１〜１０部
使用する。尚、ポリオキシプロピレンポリオール等の一
部をポリオキシエチレンポリオールで置換することも任
意である。If it is less than 400, it has good compatibility with rubber and tends to precipitate on the rubber surface (<, if it exceeds 5,000, it is difficult to migrate through the rubber and is difficult to precipitate on the rubber surface, and as a result, it does not contribute to improving the appearance.Polyoxypropylene The polyol and the like are used in an amount of 0.1 to 10 parts per 100 parts (by weight, the same applies hereinafter) of the rubber.It is also optional to partially replace the polyoxypropylene polyol or the like with polyoxyethylene polyol.
本発明でポリオキシプロピレンポリオール等を配合した
ことにより改良された外観が得られるのは、推定ではあ
るがポリオキシプロピレンポリオール等が配合物表面に
一様に析出し皮膜を形成し、ワックス、老化防止剤の過
剰の析出を防止するか、又は／及びそれらの析出物を溶
解し均質化するためと思われる。The reason why the improved appearance is obtained by blending polyoxypropylene polyol etc. in the present invention is that the polyoxypropylene polyol etc. uniformly precipitates on the surface of the compound and forms a film, causing wax and aging. This seems to be to prevent excessive precipitation of the inhibitor and/or to dissolve and homogenize those precipitates.
本発明では石油系ワックスを用いることもできるが、そ
の使用量はゴム１００部に対して５部以下とするのが好
ましい。石油系ワックスが５部を越えるとゴム表面への
析出が激しくポリオキシプロピレンポリオール等を添加
しても黒色度の改良が認められない。Although petroleum wax can be used in the present invention, the amount used is preferably 5 parts or less based on 100 parts of rubber. If the amount of petroleum wax exceeds 5 parts, precipitation on the rubber surface will be severe and no improvement in blackness will be observed even if polyoxypropylene polyol or the like is added.
本発明においてツエン系ゴム成分としては天然ゴム（Ｎ
Ｒ）及び合成ゴムの１種又は２ｆ！ＩＩ以上が用いられ
る。合成ゴムとしては例えばポリイソプレンゴム（ＩＲ
）、ポリブタジェンゴム（ＢＲ）、スチレン・ブタジェ
ンゴム（ＳＢＲ）、イソプレン・インブチレンゴム（Ｉ
ｒＲ）、エチレン・プロピレン・ジエンゴム（ＥＰＤＭ
）、これらの変性物、これらのブレンド物等がいずれも
使用できる。In the present invention, natural rubber (N
R) and one type of synthetic rubber or 2f! II or higher is used. Examples of synthetic rubber include polyisoprene rubber (IR
), polybutadiene rubber (BR), styrene-butadiene rubber (SBR), isoprene-inbutylene rubber (I
rR), ethylene propylene diene rubber (EPDM
), modified products thereof, blends thereof, etc. can all be used.
本発明においては上記成分の他に公知の加硫剤、加硫促
進剤、加硫促進助剤、加硫遅延剤、有機過酸化物、補強
剤、充填剤、老化防止剤、粘着付与剤、着色剤等を添加
できることは勿論である。In addition to the above-mentioned components, the present invention also includes known vulcanizing agents, vulcanization accelerators, vulcanization accelerators, vulcanization retarders, organic peroxides, reinforcing agents, fillers, anti-aging agents, tackifiers, Of course, coloring agents and the like can be added.
本発明のゴム組成物は上記成分を通常の加工装置、例え
ばロール、バンバリーミキサ−、ニーダ−などにより混
練することにより得られる。The rubber composition of the present invention can be obtained by kneading the above components using conventional processing equipment such as rolls, Banbury mixers, kneaders, etc.
（実 施 例）
以下に実施例及び比較例を挙げて説明する。尚、単に部
とあるは重量部を示す。(Example) Examples and comparative examples will be described below. Note that "parts" simply indicate parts by weight.
実施例１〜６及び比較例１〜８
ジエン系ゴム１００部、亜鉛華３部、ステアリン酸１．
５部、アロマティックオイル５部、老化防止剤（６Ｃ，
Ｎ−（１，３−ジメチルブチル）−Ｎ’−７二二ルーｐ
−７ユニしンシアミン〕２部、老化防止剤（ＲＤ、２，
２．４− ）ジメチル−１，２−ジハイドロキフリンの
重合体）１部、硫黄２部、促進剤（ＣＢＳ）１部及び第
１表に記載のカーボンブラック、シリカ、ミクロクリス
タリンワックス、ポリオキシプロピレンポリオールをバ
ンバリーミキサ−により混疎しゴム組成物を得た。得ら
れたゴム組成物を１５０℃で３０分間加硫後、下記に示
す方法により、オゾンクラックの発生及び黒色度を評価
した。Examples 1 to 6 and Comparative Examples 1 to 8 100 parts of diene rubber, 3 parts of zinc white, 1.0 parts of stearic acid.
5 parts, aromatic oil 5 parts, anti-aging agent (6C,
N-(1,3-dimethylbutyl)-N'-722p
-7 Unishincyamine] 2 parts, anti-aging agent (RD, 2,
2.4-) 1 part of dimethyl-1,2-dihydrokifrin polymer), 2 parts of sulfur, 1 part of accelerator (CBS) and carbon black, silica, microcrystalline wax, polyester as listed in Table 1. Oxypropylene polyol was mixed in a Banbury mixer to obtain a rubber composition. After vulcanizing the obtained rubber composition at 150° C. for 30 minutes, the occurrence of ozone cracks and degree of blackness were evaluated by the method shown below.
尚、表において注（ａ）はポリオキシプロピレンポリオ
ールの商品名である。Note (a) in the table is the trade name of polyoxypropylene polyol.
１、オゾンクラック発生評価
試験片を伸張ホルダーに保持し、オゾンウエザオメータ
ー装置中にて、オゾン濃度５０ ｐ ｐ Ｉ＋髄、温度
４０℃、伸張率２０％の条件で０．５時間毎に目視観察
を行い、クラック発生時間を求め、オゾンクラック発生
時間とした。1. Ozone crack generation evaluation test piece was held in a stretching holder and visually observed every 0.5 hours in an ozone weatherometer device under the conditions of ozone concentration 50 p p I + pith, temperature 40°C, and elongation rate 20%. Observations were made to determine the crack generation time, which was defined as the ozone crack generation time.
２、黒色度
試験片を２０日問屋外曝露後、その試験片についてミノ
ルタカメラ株式会社製［色彩色差計ＣＲ−１００］を用
い、Ｌ＊（明度）を測定した。値が小さい稚魚色度が高
く、外観性が良好であることを示す。2. After the blackness test piece was exposed outdoors for 20 days, L* (lightness) was measured for the test piece using a color difference meter CR-100 manufactured by Minolta Camera Co., Ltd. A small value indicates that the fry has a high chromaticity and good appearance.
結果を第１表に示す。表より明らかなように、比較例１
と比較して実施例で示した本発明のゴム組成物は、者し
く改良された外観（黒色度）を有する。The results are shown in Table 1. As is clear from the table, Comparative Example 1
The rubber compositions of the present invention shown in the examples have a significantly improved appearance (blackness) as compared to the rubber compositions shown in the examples.
Claims (3)
系ゴム配合物のゴム１００重量部に対してポリオキシプ
ロピレンポリオール、ポリオキシテトラメチレンポリオ
ール及びポリオキシエチレンオキシプロピレンポリオー
ルの群から選ばれた少なくとも１種を０．１〜１０重量
部配合したことを特徴とするゴム組成物。(1) At least one selected from the group of polyoxypropylene polyol, polyoxytetramethylene polyol, and polyoxyethylene oxypropylene polyol, based on 100 parts by weight of the rubber of a diene rubber compound in which the majority of the reinforcing agent is carbon black. A rubber composition comprising 0.1 to 10 parts by weight of one type.
の範囲第１項記載のゴム組成物。(2) The rubber composition according to claim 1, wherein 30% by weight or less of the reinforcing agent is silica.
量部以下使用する特許請求の範囲第１項記載のゴム組成
物。(3) The rubber composition according to claim 1, wherein 5 parts by weight or less of petroleum wax is used per 100 parts by weight of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281557A JPH01123843A (en) | 1987-11-06 | 1987-11-06 | Rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281557A JPH01123843A (en) | 1987-11-06 | 1987-11-06 | Rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01123843A true JPH01123843A (en) | 1989-05-16 |
| JPH0588898B2 JPH0588898B2 (en) | 1993-12-24 |
Family
ID=17640845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62281557A Granted JPH01123843A (en) | 1987-11-06 | 1987-11-06 | Rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01123843A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997039055A1 (en) * | 1996-04-17 | 1997-10-23 | Nippon Zeon Co., Ltd. | Rubber composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4951336A (en) * | 1972-06-08 | 1974-05-18 | ||
| JPS6178870A (en) * | 1984-09-27 | 1986-04-22 | Hayakawa Rubber Co Ltd | Tacky composition |
-
1987
- 1987-11-06 JP JP62281557A patent/JPH01123843A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4951336A (en) * | 1972-06-08 | 1974-05-18 | ||
| JPS6178870A (en) * | 1984-09-27 | 1986-04-22 | Hayakawa Rubber Co Ltd | Tacky composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0588898B2 (en) | 1993-12-24 |
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