JPH02199138A - Rubber composition for rubber thread - Google Patents
Rubber composition for rubber threadInfo
- Publication number
- JPH02199138A JPH02199138A JP1752289A JP1752289A JPH02199138A JP H02199138 A JPH02199138 A JP H02199138A JP 1752289 A JP1752289 A JP 1752289A JP 1752289 A JP1752289 A JP 1752289A JP H02199138 A JPH02199138 A JP H02199138A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- thread
- weight
- synthetic polyisoprene
- parts
- 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.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 91
- 239000005060 rubber Substances 0.000 title claims abstract description 91
- 239000000203 mixture Substances 0.000 title claims abstract description 31
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 23
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 22
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 22
- 229920001194 natural rubber Polymers 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 abstract description 6
- XKMZOFXGLBYJLS-UHFFFAOYSA-L zinc;prop-2-enoate Chemical compound [Zn+2].[O-]C(=O)C=C.[O-]C(=O)C=C XKMZOFXGLBYJLS-UHFFFAOYSA-L 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920004939 Cariflex™ Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- LIQDVINWFSWENU-UHFFFAOYSA-K aluminum;prop-2-enoate Chemical compound [Al+3].[O-]C(=O)C=C.[O-]C(=O)C=C.[O-]C(=O)C=C LIQDVINWFSWENU-UHFFFAOYSA-K 0.000 description 1
- 244000001591 balata Species 0.000 description 1
- 235000016302 balata Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004804 winding Methods 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、糸ゴム用、特にゴルフボールに使用される糸
ゴム用として育用なゴム組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a rubber composition suitable for use in rubber threads, particularly for rubber threads used in golf balls.
糸巻きゴルフボールと呼称されているゴルフボールは、
芯球の上に多重に固く巻き付けられた糸ゴム層と、その
上を被覆するカバー層とから構成されている。この糸巻
きゴルフボールの糸巻きゴム層はゴルフボールの反発弾
性に直接影響を及ぼし、糸ゴムの反発弾性の向上はゴル
フボールの飛距離を向上させる上で極めて重要である。A golf ball called a thread-wound golf ball is
It consists of a rubber thread layer tightly wound in multiple layers on a core ball, and a cover layer covering the top of the rubber thread layer. The thread-wound rubber layer of this thread-wound golf ball directly affects the impact resilience of the golf ball, and improving the impact resilience of the thread rubber is extremely important in improving the flight distance of the golf ball.
従来、糸巻きゴルフボールの糸ゴムには、通常天然ゴム
と合成ポリイソプレンゴムとのブレンドゴムが使用され
ている。これは、糸ゴムが天然ゴムだけから形成されて
いる場合は、糸ゴムの高延伸時のヒステリシスロスが大
きいため、高反発性の糸ゴムを得ることが難しい、そこ
で、天然ゴムに合成ポリイソプレンゴム、特に高延伸時
のヒステリシスロスが小さい低シス含有合成ポリイソプ
レンゴムをブレンドしたゴム組成物を使用することによ
り、高反発弾性の糸ゴムを得ている。Conventionally, a blended rubber of natural rubber and synthetic polyisoprene rubber has been used as the rubber thread for thread-wound golf balls. This is because if the rubber thread is made only from natural rubber, it is difficult to obtain a rubber thread with high resilience due to the large hysteresis loss when the rubber thread is highly stretched. By using a rubber composition blended with rubber, especially a low-cis-containing synthetic polyisoprene rubber that exhibits low hysteresis loss during high stretching, a rubber thread with high resilience is obtained.
しかしながら、上記低シス含有合成ポリイソプレンゴム
の天然ゴムに対する配合量が多くなると、糸ゴムを製造
する場合のゴム組成物の加工性が低下する。また、得ら
れた糸ゴムの耐熱性が低下し、たとえば糸巻きゴルフボ
ールを製造する際、糸ゴム層の上をカバー層で被覆した
後、高温で熱処理する時に受ける熱履歴等によって、糸
ゴムが切断してしまうという問題があった。However, when the amount of the low-cis-containing synthetic polyisoprene rubber added to natural rubber increases, the processability of the rubber composition when producing rubber thread decreases. In addition, the heat resistance of the obtained thread rubber decreases, and for example, when manufacturing a thread-wound golf ball, the thread rubber may deteriorate due to the heat history etc. that it undergoes during heat treatment at high temperature after covering the thread rubber layer with a cover layer. There was a problem with it being disconnected.
本発明の目的は、天然ゴムと合成ポリイソプレンゴムを
必須のゴム成分として含有する優れた加工性、耐熱性並
びに反発弾性を有する糸ゴム用ゴム組成物を提供するこ
とである。An object of the present invention is to provide a rubber composition for thread rubber that contains natural rubber and synthetic polyisoprene rubber as essential rubber components and has excellent processability, heat resistance, and impact resilience.
本発明の目的は、天然ゴムと合成ポリイソプレンゴムと
からなるゴム混合物に、このゴム混合物１００重量部当
たり０．５〜５重量部のアクリル酸金属塩を配合したゴ
ム組成物により達成することができる。The object of the present invention can be achieved by a rubber composition in which a rubber mixture consisting of natural rubber and synthetic polyisoprene rubber is blended with 0.5 to 5 parts by weight of an acrylic acid metal salt per 100 parts by weight of this rubber mixture. can.
本発明のゴム組成物は、天然ゴムと合成ポリイソプレン
ゴムを必須のゴム成分として含有する。合成ポリイソプ
レンゴムとしては、高延伸時のヒステリシスロスの低減
効果に優れたシス−１，４結合の含有量が９２χ程度の
低シス含有（中高シス含有とも称される）合成ポリイソ
プレンゴムを使用することが好ましい。The rubber composition of the present invention contains natural rubber and synthetic polyisoprene rubber as essential rubber components. As the synthetic polyisoprene rubber, we used synthetic polyisoprene rubber with low cis content (also referred to as medium-high cis content) with a content of cis-1,4 bonds of about 92χ, which has an excellent effect of reducing hysteresis loss during high stretching. It is preferable to do so.
これらの天然ゴムと合成ポリイソプレンゴムとの混合割
合は、天然ゴムに対する合成ポリイソプレンゴムの重量
比（天然ゴム二合成ポリイソプレンゴム）で５０ ？
５０〜１０ ： ９０にすることが望ましい、ゴム組成
物に十分なヒステリシスロス特性を付与するためには天
然ゴムに対する合成ポリイソプレンゴムの混合比率を５
０ ： ５０以上とする必要がある。他方、ゴム組成物
の加工性を向上させ、糸ゴム製造上の障害を防止するた
めには、天然ゴムに対する合成ポリイソプレンゴムの混
合比を１０ ： ９０以下とする必要がある。The mixing ratio of these natural rubbers and synthetic polyisoprene rubbers is a weight ratio of synthetic polyisoprene rubber to natural rubber (natural rubber di-synthetic polyisoprene rubber) of 50?
50 to 10: It is desirable to set the ratio to 90. In order to impart sufficient hysteresis loss characteristics to the rubber composition, the mixing ratio of synthetic polyisoprene rubber to natural rubber should be 5.
0: Must be 50 or more. On the other hand, in order to improve the processability of the rubber composition and prevent problems in the production of rubber thread, the mixing ratio of synthetic polyisoprene rubber to natural rubber must be 10:90 or less.
本発明のゴム組成物は、上記天然ゴムと合成ポリイソプ
レンゴムとからなるゴム混合物１００重量部当たり０．
５〜５重量部のアクリル酸金属塩を含有することが重要
である。アクリル酸金属塩を０．５重量部以上配合する
ことによって、高温時の引張強度や伸び等の高温加熱時
の耐熱性を改善することができる。しかし、本発明のゴ
ム組成物に対し良好なヒステリシスロス特性を付与する
ためには、アクリル酸金属塩の配合量の上限は５重量部
である必要がある。The rubber composition of the present invention has a rubber composition of 0.00 parts by weight per 100 parts by weight of a rubber mixture consisting of the above-mentioned natural rubber and synthetic polyisoprene rubber.
It is important to contain 5 to 5 parts by weight of acrylic acid metal salt. By blending acrylic acid metal salt in an amount of 0.5 parts by weight or more, heat resistance during high temperature heating such as tensile strength and elongation at high temperatures can be improved. However, in order to impart good hysteresis loss characteristics to the rubber composition of the present invention, the upper limit of the amount of acrylic acid metal salt needs to be 5 parts by weight.
アクリル酸金属塩の例としては、たとえばアクリル酸亜
鉛、アクリル酸アルミニウムなどを挙げることができる
。Examples of metal acrylates include zinc acrylate, aluminum acrylate, and the like.
本発明のゴム組成物には、従来知られているゴム組成物
に配合される各種の配合剤、たとえば加硫剤、加硫促進
剤、加硫助剤、老化防止剤、カーボンブラック、ホワイ
トカーボン等を適宜配合することができる。The rubber composition of the present invention includes various compounding agents that are conventionally mixed in rubber compositions, such as vulcanizing agents, vulcanization accelerators, vulcanization aids, anti-aging agents, carbon black, and white carbon. etc. can be blended as appropriate.
これら配合剤の配合量としては、たとえば、通常、ゴム
成分１００重量部当たり硫黄等の加硫剤を０．１〜２．
５重量部１、加硫促進剤を０．１〜２重量部、亜鉛華等
の加硫助剤を０．５〜５重量部、老化防止剤を０．１〜
２重量部配合するのが好ましい。The amount of these compounding agents is usually 0.1 to 2.0% of the vulcanizing agent such as sulfur per 100 parts by weight of the rubber component.
5 parts by weight 1, 0.1 to 2 parts by weight of a vulcanization accelerator, 0.5 to 5 parts by weight of a vulcanization aid such as zinc white, and 0.1 to 0.1 parts by weight of an anti-aging agent.
It is preferable to mix 2 parts by weight.
本発明のゴム組成物は、糸ゴム、特に糸巻きゴルフボー
ル用の糸ゴムとして有用である。糸巻きゴルフボールの
糸ゴムとして使用する場合、常法により作製した糸ゴム
を芯球に巻き付け、さらにその糸ゴム層にカバー層を被
覆することによって糸巻きゴルフボールを製造すること
ができる。この場合の芯球としては通常使用されている
ゴム芯等の固体芯または液体芯を使用することができる
。また、カバー層としてはバラタ、アイオノマー樹脂等
からなる外皮がある。The rubber composition of the present invention is useful as a thread rubber, particularly as a thread rubber for thread-wound golf balls. When used as a thread rubber for a thread-wound golf ball, a thread-wound golf ball can be manufactured by winding a thread rubber produced by a conventional method around a core ball and further covering the thread rubber layer with a cover layer. As the core ball in this case, a commonly used solid core such as a rubber core or a liquid core can be used. Further, as the cover layer, there is an outer skin made of balata, ionomer resin, or the like.
これらの芯球、糸ゴム層、外皮の重量、厚さ等の関係は
、通常のゴルフボールの規格範囲で選択することができ
る。The relationship among the core ball, thread rubber layer, outer shell, weight, thickness, etc. can be selected within the standard range of ordinary golf balls.
以下、実施例と比較例により、本発明の効果を具体的に
説明する。Hereinafter, the effects of the present invention will be specifically explained using Examples and Comparative Examples.
ヒステリシスロス特性は、次の方法により測定した。Hysteresis loss characteristics were measured by the following method.
供試試料を１００Ｋｇ／ｃｓ”の一定応力になるまで延
伸した後見に戻し、その際の往きと帰りのエネルギーの
比率を％で表示した。この値が小さい方がエネルギーロ
スが小さく、ヒステリシスロス特性が優れていることを
意味する。The test sample was stretched to a constant stress of 100 Kg/cs and then returned to the rear end, and the ratio of the forward and return energy at that time was expressed as a percentage.The smaller this value is, the smaller the energy loss, and the hysteresis loss characteristics. means that it is excellent.
表に示す配合組成の異なるゴム組成物を調製し、これら
を常法にしたがって加硫し、物性測定用の試料を作製し
た。Rubber compositions having different compositions as shown in the table were prepared, and these were vulcanized according to a conventional method to prepare samples for measuring physical properties.
使用した合成ポリイソプレンゴムは、シス１．４−結合
含有量が９２χのシェル化学社製の“カリフレックス”
（ＣａｌｉＨｅｘ） ＩＲ３０５である。The synthetic polyisoprene rubber used was "Cariflex" manufactured by Shell Chemical Co., Ltd., which has a cis-1,4-bond content of 92χ.
(CaliHex) IR305.
これらの試料を使用して、それぞれ室温および高温（７
０℃）における引張強度、伸びならびに室温におけるヒ
ステリシスロス特性を測定した。結果を表に示した。These samples were used at room temperature and elevated temperature (7
Tensile strength and elongation at 0°C) and hysteresis loss characteristics at room temperature were measured. The results are shown in the table.
（本頁以下余白）
表から、アクリル酸金属塩を含有しない場合は、ゴム成
分が天然ゴムだけの比較例１や天然ゴム量の配合量の多
い比較例２の場合は、強度と伸びは良好であるもののヒ
ステリシスロス特性に劣っている。また、合成ポリイソ
プレンゴムの量が５０重量部を超える比較例３，４．５
゜６は、高温下における強度が著しく低い。(Left space below this page) From the table, it can be seen that when the metal acrylic acid salt is not contained, the strength and elongation are good in Comparative Example 1 where the rubber component is only natural rubber and Comparative Example 2 where a large amount of natural rubber is blended. However, it has poor hysteresis loss characteristics. Comparative Examples 3 and 4.5 in which the amount of synthetic polyisoprene rubber exceeds 50 parts by weight
6 has significantly low strength at high temperatures.
また、アクリル酸亜鉛を含有していてもゴム成分が合成
ポリイソプレンゴムのみの比較例７およびアクリル酸亜
鉛の含有量の少ない（０，２５重量部）比較例８は、高
温下における強度と伸びの低下が著しい、アクリル酸金
属塩の 含有量の多い（６，０重量部）比較例９は、ヒ
ステリシスロス特性が劣っている。In addition, Comparative Example 7, in which the rubber component was only synthetic polyisoprene rubber even though it contained zinc acrylate, and Comparative Example 8, in which the content of zinc acrylate was small (0.25 parts by weight), showed strength and elongation at high temperatures. Comparative Example 9, which has a high content of acrylic acid metal salt (6.0 parts by weight), has a remarkable decrease in hysteresis loss characteristics.
これに対して、本発明に規定する組成を満足するゴム組
成物（実施例１〜８）は、高温下における引張強度と伸
びが大きく、しかもヒステリシスロス特性が小さい物性
を示しており、糸ゴム用として有用であることが判る。On the other hand, the rubber compositions (Examples 1 to 8) that satisfy the composition specified in the present invention have high tensile strength and elongation at high temperatures, and low hysteresis loss characteristics, and are suitable for thread rubber. It turns out that it is useful for various purposes.
なお、アクリル酸金属塩の量が適正であっても、ゴム成
分の天然ゴムと合成イソプレンゴムとの比率が不適正に
なり、天然ゴムの量が５０重量部を超えると、強度や伸
びなどの性能には実質的に問題はないものの、ヒステリ
シスロス特性が悪化する（比較例１Ｏ）。Even if the amount of acrylic acid metal salt is appropriate, the ratio of the rubber component natural rubber and synthetic isoprene rubber will be inappropriate, and if the amount of natural rubber exceeds 50 parts by weight, the strength and elongation will deteriorate. Although there is no substantial problem in performance, the hysteresis loss characteristics deteriorate (Comparative Example 1O).
以上、説明したように本発明によれば、糸コム用ゴム組
成物のゴム成分として、天然ゴムと合成ポリイソプレン
ゴムを必須のゴム成分とし、これらのゴム混合物１００
重量部当たり０．５〜５重量部のアクリル酸金属塩を配
合することにより、耐熱老化性、ヒステリシスロス特性
並びに反発弾性に優れ、加工性の良好な糸ゴムを得るこ
とができる。As explained above, according to the present invention, natural rubber and synthetic polyisoprene rubber are used as essential rubber components as rubber components of a rubber composition for a thread comb, and a mixture of these rubbers 100
By blending 0.5 to 5 parts by weight of acrylic acid metal salt per part by weight, it is possible to obtain a rubber thread with excellent heat aging resistance, hysteresis loss characteristics, impact resilience, and good processability.
Claims (2)
ム混合物に、該ゴム混合物１００重量部当たり０．５〜
５重量部のアクリル酸金属塩を配合してなる糸ゴム用ゴ
ム組成物。(1) A rubber mixture consisting of natural rubber and synthetic polyisoprene rubber is added with 0.5 to 100 parts by weight per 100 parts by weight of the rubber mixture.
A rubber composition for thread rubber containing 5 parts by weight of an acrylic acid metal salt.
比（天然ゴム：合成ポリイソプレンゴム）が重量比で１
０：９０〜５０：５０である請求項１に記載の糸ゴム用
ゴム組成物。(2) The blending ratio of synthetic polyisoprene rubber to natural rubber (natural rubber: synthetic polyisoprene rubber) is 1 by weight.
The rubber composition for thread rubber according to claim 1, which has a ratio of 0:90 to 50:50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1752289A JPH02199138A (en) | 1989-01-30 | 1989-01-30 | Rubber composition for rubber thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1752289A JPH02199138A (en) | 1989-01-30 | 1989-01-30 | Rubber composition for rubber thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02199138A true JPH02199138A (en) | 1990-08-07 |
Family
ID=11946281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1752289A Pending JPH02199138A (en) | 1989-01-30 | 1989-01-30 | Rubber composition for rubber thread |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02199138A (en) |
-
1989
- 1989-01-30 JP JP1752289A patent/JPH02199138A/en active Pending
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