JPH03296584A - Solvent base pressure-sensitive adhesive - Google Patents
Solvent base pressure-sensitive adhesiveInfo
- Publication number
- JPH03296584A JPH03296584A JP10116390A JP10116390A JPH03296584A JP H03296584 A JPH03296584 A JP H03296584A JP 10116390 A JP10116390 A JP 10116390A JP 10116390 A JP10116390 A JP 10116390A JP H03296584 A JPH03296584 A JP H03296584A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- adhesive
- self
- solvent
- agent
- 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
- 239000002904 solvent Substances 0.000 title claims description 23
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 claims abstract description 42
- 229920001971 elastomer Polymers 0.000 claims abstract description 36
- 239000005060 rubber Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 8
- 230000002265 prevention Effects 0.000 claims description 22
- 244000043261 Hevea brasiliensis Species 0.000 abstract description 6
- 229920003052 natural elastomer Polymers 0.000 abstract description 6
- 229920001194 natural rubber Polymers 0.000 abstract description 6
- 229920000609 methyl cellulose Polymers 0.000 abstract description 3
- 239000001923 methylcellulose Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 6
- 239000001095 magnesium carbonate Substances 0.000 description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 6
- 239000000454 talc Substances 0.000 description 6
- 229910052623 talc Inorganic materials 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 3
- 230000000181 anti-adherent effect Effects 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 3
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 201000010001 Silicosis Diseases 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 229920000896 Ethulose Polymers 0.000 description 1
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical compound CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- -1 glycerin ester Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 150000003097 polyterpenes Chemical class 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
本発明は溶剤型粘着剤に関する。
詳しくは、ゴムと粘着付与樹脂とからなる透明性のよい
溶剤型粘着剤に関する。The present invention relates to a solvent-based adhesive. Specifically, the present invention relates to a highly transparent solvent-based adhesive comprising rubber and a tackifying resin.
ゴムと粘着付与樹脂とを主成分とする溶剤型粘着剤は古
くから用いられており、使用目的に合わせて広範な種類
の粘着剤が製造されている。
一般に、溶剤型粘着剤は、原料ゴムの素煉りの程度によ
って、タックや凝集力等の物性が左右されるため、この
素煉りの工程は重要な工程である。
この素煉り工程後にゴムをシート状にするが、粉砕して
、保存した後、粘着付与樹脂と共に溶剤に溶解して粘着
剤を製造する。
この保存中に、このシート状あるいは粉砕したゴムが、
互いに接着してブロック状になることを防止するために
、素煉りしたゴム表面に自著防止剤を付着させていた。
従来から、一般にゴム工業においては、自着防止剤とし
て、タルク、炭酸マグネシウム、ホワイトカーボン（珪
酸粉末）、炭酸カルシウム、澱粉、コーンスターチ、ス
テアリン酸亜鉛、雲母粉等が用いられていた。
ｒ発明が解決しようとする課題】
この粘着剤の重要な用途の一つとして文房具用テープが
ある。そして、この文房具用としては、紙等を継ぎ合わ
せるときゃ壁等に張りつけるときに使用するが、この際
、このテープは無色透明なもの程好まれる。
上述の自着防止剤は粘着剤への混入量は少ないが、ゴム
や粘着付与樹脂等と均一相を形成しないために、粘着剤
の透明性に大きな影響を与え、特に、光の屈折率が粘着
剤成分の屈折率と大きく異なる場合には、粘着剤の透明
性を低下させる原因となっている。
又、溶剤型粘着剤を製造するときには、有機溶剤に溶解
して溶液として使用するため、自着防止剤としては溶剤
に容易に溶解または分散することが必要である。
このように、自著防止剤は、素煉りしたゴムに対する自
着防止性が良好であるとともに、溶剤への分散性に優れ
ていること、凝集せずに作業性のよいこと、粘着剤の物
性に悪影響を及ぼさないこと、安全であること、透明性
がよいこと、粘着剤の透明性を阻害しないこと等の性能
が要求される。
ゴム系粘着剤は、ゴムと粘着付与剤を主成分とし、軟化
剤、老化防止剤等を含んでいるが、これらの粘着剤成分
は、通常、１．４５〜１．５６の屈折率を有している。
そのため、自着防止剤として、この屈折率の異なる物質
を使用すると、粘着剤の透明性が阻害されることになる
。
この粘着剤成分と屈折率がほぼ等しい自着防止剤として
はタルク等の珪酸塩や炭酸マグネシウム、ステアリン酸
亜鉛等があるが、タルク等の珪酸塩は、珪肺病になる恐
れがあるため、労働安全面の管理が必要であり、炭酸マ
グネシウムは、粒子の二次凝集のため、溶剤に対する分
散性が悪く、異物の原因となっており、ステアリン酸亜
鉛は、粘着物性に対する影響に問題がある。
そこで、本発明は溶剤型のゴム系粘着剤において、上記
の問題がない、即ち、自着防止性がよく、粘着剤物性に
悪影響がなく、粘着剤の透明性を阻害しない、透明性に
優れた溶剤型粘着剤を提供することを目的とする。Solvent-based adhesives containing rubber and tackifier resin as main components have been used for a long time, and a wide variety of adhesives are manufactured depending on the purpose of use. In general, the physical properties of solvent-based adhesives, such as tack and cohesive force, are affected by the degree of softening of the raw material rubber, so this milling step is an important step. After this milling process, the rubber is made into a sheet, which is crushed, stored, and then dissolved in a solvent together with a tackifying resin to produce an adhesive. During this storage, this sheet or crushed rubber
In order to prevent the rubber from adhering to each other and becoming block-like, an anti-self-printing agent was applied to the surface of the plain rubber. Conventionally, in the rubber industry, talc, magnesium carbonate, white carbon (silicic acid powder), calcium carbonate, starch, corn starch, zinc stearate, mica powder, etc. have been used as self-adhesion inhibitors. Problems to be Solved by the Invention One of the important applications of this adhesive is stationery tape. For stationery, it is used for joining papers, etc., and pasting them on walls, etc. In this case, it is preferable that the tape be colorless and transparent. Although the amount of the above-mentioned self-adhesion prevention agent mixed into the adhesive is small, since it does not form a homogeneous phase with the rubber or tackifying resin, it has a large effect on the transparency of the adhesive, and in particular, the refractive index of light is affected. If the refractive index is significantly different from the refractive index of the adhesive component, it causes a decrease in the transparency of the adhesive. Furthermore, when producing a solvent-based adhesive, the adhesive is dissolved in an organic solvent and used as a solution, so the anti-adhesion agent must be easily dissolved or dispersed in the solvent. In this way, the anti-self-adhesion agent has good properties in preventing self-adhesion on plain rubber, has excellent dispersibility in solvents, does not agglomerate and is easy to work with, and has the physical properties of an adhesive. Performance requirements include not having an adverse effect on the adhesive, being safe, having good transparency, and not interfering with the transparency of the adhesive. Rubber adhesives have rubber and tackifier as their main components, and also contain softeners, anti-aging agents, etc. These adhesive components usually have a refractive index of 1.45 to 1.56. are doing. Therefore, if substances with different refractive indexes are used as self-adhesion prevention agents, the transparency of the adhesive will be impaired. Self-adhesion prevention agents with a refractive index almost equal to that of this adhesive component include silicates such as talc, magnesium carbonate, and zinc stearate, but silicates such as talc may cause silicosis, so Safety management is required; magnesium carbonate has poor dispersibility in solvents due to secondary agglomeration of particles, causing foreign matter; and zinc stearate has a problem with its effect on adhesive properties. Therefore, the present invention provides a solvent-based rubber adhesive that does not have the above problems, that is, has good self-adhesion prevention properties, does not have a negative effect on the physical properties of the adhesive, does not impede the transparency of the adhesive, and has excellent transparency. The purpose of the present invention is to provide a solvent-based pressure-sensitive adhesive.
本発明は、上記問題を解決し、上記目的を達成するため
になしたもので、ゴムと粘着付与樹脂とからなる溶剤型
粘着剤において、前記ゴムの自着防止剤としてセルロー
スエーテルの粉末を用いるのである。
本発明において、溶剤型粘着剤とはゴムと粘着付与剤樹
脂とからなるものであり、軟化剤や老化防止剤、充填側
等の各種成分が適宜配合されている。
このとき使用されるゴムとしては、天然ゴム（ＮＲ）、
スチレン−ブタジェン共重合ゴム（ＳＢＲ）、ブタジェ
ンゴム（ＢＲ）、クロロプレンゴム（ＣＲ）、アクリロ
ニトリル−ブタジェン共重合ゴム（ＮＢＲ）、イソブチ
レン−イソプレン共重合ゴム（ＩＩＲ）、アクリルゴム
等のゴムが挙げられる。
これらのゴムの屈折率は第１表に示すとおり、はぼ１．
５０〜１．５６の範囲にある。
第１表
本発明に使用する粘着付与樹脂としては、従来種々なも
のが知られている。例えば、ロジンや水添ロジングリセ
リンエステル等のロジンの誘導体、Ｃ２系石油樹脂、脂
環族系石油樹脂、ポリテルペン樹脂、テルペン−フェノ
ール樹脂等が用いられる。これらの中で透明性のよいも
のが好適である。
これら粘着付与樹脂の屈折率は、通常１．４５〜１．５
６の範囲にある。
本発明の粘着剤に使用される軟化剤としては、ポリブテ
ン、イソブチレン低重合物、ポリイソプレン低重合物、
プロセスオイル、ナフテン系オイル、各種可塑剤等が好
適に使用される。
その他の成分としては、補強剤としての無機充場打、老
化防止剤、着色材、架橋剤等がある。
特に、無機充填材については、前述の自着防止剤と同様
に、粘着剤の透明性に及ぼす影響が大きいから、配合す
る場合には、ゴム、粘着付与樹脂等の屈折率と近似した
物質を用いることが必要である。従来から無機充填材と
して、炭酸カルシウム、塩基性炭酸マグネシウム、クレ
ー、亜鉛華、珪藻土、タルク、硫酸アルミニウム、硫酸
バリウム、酸化チタン、酸化マグネシウム、マイカ、ア
スベスト、水酸化マグネシウム等が用いられているが、
本発明では、ゴム、粘着付与樹脂の屈折率に近いタルク
、アルミナ、カオリン、クレー、水酸化マグネシウム、
硫酸カルシウム、硫酸カルシウム２水塩、ベントナイト
、塩基性炭酸マグネシウム等が用いられる。
本発明における自着防止剤は、特に、セルロースエーテ
ルの粉末を使用する。
このセルロースエーテルは屈折率が１．４５〜１．５６
の範囲にあり、素煉りゴムに対する自著防止効果が大き
く、溶剤に対する分散性に優れているし、粘着剤の物性
に悪影響がなく、透明であるから、透明粘着剤に使用す
るゴムの自着防止剤としては理想的である。
かかるセルロースエーテルの好適な物としてはメチルセ
ルロース、エチルセルロース、エチルヒドロキシエチル
エチルセルロース、カルボキシメチルエチルセルロース
、ヒドロキシエチルセルロース、カルボキシメチルセル
ロース等がある。
この中で、メチルセルロース、エチルセルロース、エチ
ルヒドロキシエチルセルロースが溶剤に対する分散性が
特に優れているので、特に好適に使用できる。
又、この自着防止剤は粒径が小さい程分散性が良好であ
るが、市販のセルロースエーテルは粒径の大きいものを
含むから、篩にかけて粒径の小さいもののみを取り出し
、これを用いるようにすればよい。The present invention has been made to solve the above problems and achieve the above objects, and uses cellulose ether powder as a self-adhesion prevention agent for the rubber in a solvent-based adhesive comprising rubber and a tackifying resin. It is. In the present invention, the solvent-based adhesive is composed of rubber and tackifier resin, and various components such as a softener, anti-aging agent, and filler are appropriately blended therein. The rubber used at this time is natural rubber (NR),
Examples of rubbers include styrene-butadiene copolymer rubber (SBR), butadiene rubber (BR), chloroprene rubber (CR), acrylonitrile-butadiene copolymer rubber (NBR), isobutylene-isoprene copolymer rubber (IIR), and acrylic rubber. As shown in Table 1, the refractive index of these rubbers is 1.
It is in the range of 50 to 1.56. Table 1 Various types of tackifying resins have been known to be used in the present invention. For example, rosin, rosin derivatives such as hydrogenated rosin glycerin ester, C2 petroleum resin, alicyclic petroleum resin, polyterpene resin, terpene-phenol resin, etc. are used. Among these, those with good transparency are preferred. The refractive index of these tackifying resins is usually 1.45 to 1.5.
It is in the range of 6. Softeners used in the adhesive of the present invention include polybutene, isobutylene low polymer, polyisoprene low polymer,
Process oils, naphthenic oils, various plasticizers, etc. are preferably used. Other components include inorganic fillers as reinforcing agents, anti-aging agents, coloring agents, cross-linking agents, and the like. In particular, inorganic fillers, like the self-adhesion prevention agents mentioned above, have a large effect on the transparency of the adhesive, so when blending them, use substances with a refractive index similar to that of rubber, tackifying resins, etc. It is necessary to use Conventionally, calcium carbonate, basic magnesium carbonate, clay, zinc white, diatomaceous earth, talc, aluminum sulfate, barium sulfate, titanium oxide, magnesium oxide, mica, asbestos, magnesium hydroxide, etc. have been used as inorganic fillers. ,
In the present invention, rubber, talc, alumina, kaolin, clay, magnesium hydroxide, which has a refractive index close to that of the tackifying resin,
Calcium sulfate, calcium sulfate dihydrate, bentonite, basic magnesium carbonate, etc. are used. As the self-adhesion prevention agent in the present invention, particularly cellulose ether powder is used. This cellulose ether has a refractive index of 1.45 to 1.56.
It has a large self-adhesion prevention effect on plain rubber, has excellent dispersibility in solvents, does not have any negative effect on the physical properties of the adhesive, and is transparent, so the self-adhesion of rubber used in transparent adhesives is excellent. Ideal as an inhibitor. Suitable examples of such cellulose ethers include methylcellulose, ethylcellulose, ethylhydroxyethylethylcellulose, carboxymethylethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, and the like. Among these, methylcellulose, ethylcellulose, and ethylhydroxyethylcellulose have particularly excellent dispersibility in solvents, so they can be particularly preferably used. In addition, the smaller the particle size of this anti-adhesion agent, the better the dispersibility, but since commercially available cellulose ether contains large particle sizes, it is best to sieve to extract only those with small particle sizes and use them. Just do it.
本発明の溶剤型粘着剤はすべて屈折率が１．４５〜１．
５６の範囲のものを使用するから、透明性に優れている
。
特に、原料ゴムに使用される自着防止剤として、屈折率
が１．４５〜１．５６の範囲のもので、透明性がよく、
自着防止効果の大きい、溶剤への分散性に優れていて溶
剤中で凝集せず、粘着剤の物性に悪影響のないセルロー
スエーテルを使用するから、透明性に優れた良好な粘着
剤が製造できる。All the solvent-based adhesives of the present invention have a refractive index of 1.45 to 1.
It has excellent transparency because it uses a material with a molecular weight of 56. In particular, as a self-adhesion prevention agent used in raw rubber, it has a refractive index in the range of 1.45 to 1.56 and has good transparency.
Since we use cellulose ether, which has a large self-adhesion prevention effect, has excellent dispersibility in solvents, does not aggregate in solvents, and has no negative effect on the physical properties of the adhesive, it is possible to produce a good adhesive with excellent transparency. .
以下、本発明について、実施例および比較例を挙げて具
体的に説明するが、本発明は、これらの実施例のみに限
定されるものではない。
実施例１〜３、比較例１〜５
（自著防止性および分散性）
次の試験方法により、自着防止性および溶剤への分散性
について、第２表に示す各種自著防止剤を評価した。
試験方法
■自着防止性試験
天然ゴム（屈折率１．５２）素煉りシート（５ｃｍＸ５
ｃｍＸｏ、５ｃｍ）に、自著防止剤を打粉した２枚のシ
ート重ね、この上に錘（１ｋｇ／ｃｍ”）を１０分間載
せた後、自著度を評価した。
この際の自着防止剤の打粉量は、天然ゴム１゜Ｏｇに対
して０．５ｇおよび２ｇとした。
又、自着度は次の３段階で評価した。
◎：全く自著性なし
○：自着性なし
Δ：少し自著性がある
■分散性試験
トルエンに自着防止剤を分散させ、分散液をガラス板に
滴下した後、自着防止剤粒子の分散状態を顕微鏡により
観察した。
自着防止剤の分散量は、トルエン１００ｇに対して、０
．２ｇおよび０．５ｇとした。
分散性は、次の３段階で評価した。
Ｏ：粒径５０μｍ以上の粒子がない
Δ：粒径５０μｍ以上の粒子が少量ある×：粒径５０μ
ｍ以上の粒子が多量にある評価結果を第２表に示す。
第２表から明らかなように、セルロースエーテルの自著
防止剤は、自著防止性、分散性がよく、屈折率が適当で
あり、安全衛生対策をする必要がなく、良好なことが判
る。
これに対して、他の自著防止剤は、自着防止性が良好で
あっても、屈折率が大きいか（炭酸カルシウム）、分散
性が悪いか（塩基性炭酸マグネシウム）、あるいは安全
衛生対策が必要なもの（タルク、含水珪酸、クレー）で
ある。
（透明性）
第３表に示す成分をトルエンに溶解させて、粘着剤溶液
を製造した。この粘着剤溶液を基剤に塗布し、乾燥後、
粘着剤層の厚みが２ｍｍの粘着テープを製造した。
このとき使用した天然ゴムには、第４表に示す自着防止
剤を用いである。
このようにして製造した粘着剤の透明性を測定した結果
を第４表に示す。
この透明性の測定はへイズメーターを用い、ヘイズ値で
表した。
第３表
＊１荒川化学（株）社製、商品名アルコンＰ−１２５＊
２積水化学工業■社製、商品名ＤＯＰ＊３吉富製薬■社
製、 商品名ヨシノックスＢＩＴ向、自着防止剤は天然
ゴム１００重量部に対して０．２重量部（０，２ＰＨＲ
）および０．５重量部（０，５ＰＨＲ）の割合で使用し
た。
第３表から、自着防止剤としてセルロースエーテルの粉
末を用いる粘着剤は、従来の粘着剤と比べて、ヘイズ値
が小さく、透明性に優れていることが判る。EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. Examples 1 to 3, Comparative Examples 1 to 5 (Self-adhesion prevention property and dispersibility) Various self-adhesion prevention agents shown in Table 2 were evaluated for self-adhesion prevention property and dispersibility in solvents using the following test methods. did. Test method ■Self-adhesion prevention test Natural rubber (refractive index 1.52) Plain sheet (5cm x 5
cm The amount of dusting was 0.5g and 2g per 1°Og of natural rubber.The degree of self-adhesion was evaluated on the following three levels: ◎: No self-adhesion at all ○: No self-adhesion Δ: Dispersibility test The anti-adhesive agent was dispersed in toluene, and the dispersion liquid was dropped onto a glass plate, and the state of dispersion of the anti-adhesive particles was observed using a microscope. Dispersion of the anti-adhesive agent The amount is 0 for 100g of toluene.
．． 2g and 0.5g. Dispersibility was evaluated in the following three stages. O: No particles with a particle size of 50 μm or more Δ: A small amount of particles with a particle size of 50 μm or more ×: Particle size 50 μm
Table 2 shows the evaluation results in which there were a large number of particles of m or more. As is clear from Table 2, the cellulose ether self-printing prevention agent has good self-printing prevention properties, good dispersibility, appropriate refractive index, and does not require safety and hygiene measures, and is therefore good. On the other hand, other self-adhesion prevention agents have good self-adhesion prevention properties, but they either have a high refractive index (calcium carbonate), poor dispersibility (basic magnesium carbonate), or have safety and health measures. (talc, hydrated silicic acid, clay). (Transparency) The components shown in Table 3 were dissolved in toluene to produce an adhesive solution. Apply this adhesive solution to the base and after drying,
An adhesive tape with an adhesive layer having a thickness of 2 mm was manufactured. The natural rubber used at this time contained a self-adhesion prevention agent shown in Table 4. Table 4 shows the results of measuring the transparency of the pressure-sensitive adhesives produced in this way. This transparency was measured using a haze meter and expressed as a haze value. Table 3 *1 Manufactured by Arakawa Chemical Co., Ltd., trade name Alcon P-125*
2 Manufactured by Sekisui Chemical Co., Ltd., product name DOP
) and 0.5 parts by weight (0.5 PHR). From Table 3, it can be seen that the adhesive using cellulose ether powder as a self-adhesion prevention agent has a smaller haze value and excellent transparency than conventional adhesives.
以上、説明したように、本発明溶剤型粘着剤に使用する
ゴムの自着防止剤として、セルロースエーテルを使用す
る。
このセルロースエーテルはゴムの自着防止性に優れてい
るから、ゴムの保存中に互いにブロックすることがなく
安心して保存でる。又、このセルロースエーテルは珪肺
病になることもなく、労働衛生上使用することを心配す
ることがない。
又、このセルロースエーテルは溶剤中での分散性がよい
から、粘着剤としての性能を低下させることない。
又、このセルロースエーテルは屈折率が適当であり、透
明であるから、透明性に優れた粘着剤とすることがでる
。
このように、このセルロースエーテルは種々な効果があ
るから、極めて有用なものである。As explained above, cellulose ether is used as the rubber self-adhesion prevention agent used in the solvent-based adhesive of the present invention. This cellulose ether has excellent properties to prevent rubber from sticking to itself, so rubbers can be stored safely without blocking each other during storage. Moreover, this cellulose ether does not cause silicosis, and there is no need to worry about its use in terms of occupational hygiene. Moreover, since this cellulose ether has good dispersibility in a solvent, it does not deteriorate its performance as an adhesive. Furthermore, since this cellulose ether has an appropriate refractive index and is transparent, it can be used as an adhesive with excellent transparency. As described above, this cellulose ether has various effects and is therefore extremely useful.
Claims (1)
いて、前記ゴムの自着防止剤として、セルロースエーテ
ルの粉末を使用することを特徴とする溶剤型粘着剤。(1) A solvent-based adhesive comprising a rubber and a tackifying resin, characterized in that cellulose ether powder is used as a self-adhesion prevention agent for the rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10116390A JPH03296584A (en) | 1990-04-17 | 1990-04-17 | Solvent base pressure-sensitive adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10116390A JPH03296584A (en) | 1990-04-17 | 1990-04-17 | Solvent base pressure-sensitive adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03296584A true JPH03296584A (en) | 1991-12-27 |
Family
ID=14293374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10116390A Pending JPH03296584A (en) | 1990-04-17 | 1990-04-17 | Solvent base pressure-sensitive adhesive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03296584A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114424A (en) * | 1998-01-29 | 2000-09-05 | Estee Lauder, Inc. | Opalescent cosmetic compositions and methods for their preparation |
| US7166686B2 (en) | 2000-06-28 | 2007-01-23 | 3M Innovative Properties Company | High refractive index pressure-sensitive adhesives |
| US7335425B2 (en) | 2000-06-28 | 2008-02-26 | 3M Innovative Properties Company | High refractive index pressure-sensitive adhesives |
| JP2016069527A (en) * | 2014-09-30 | 2016-05-09 | 松本油脂製薬株式会社 | Sticking-preventing agent for unvulcanized rubber and use of the same |
| CN110982016A (en) * | 2019-12-18 | 2020-04-10 | 广东裕田霸力科技股份有限公司 | Environment-friendly high-performance hydrolysis-resistant and aging-resistant TPR (thermal Plastic rubber) treating agent grafted through composite |
-
1990
- 1990-04-17 JP JP10116390A patent/JPH03296584A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6114424A (en) * | 1998-01-29 | 2000-09-05 | Estee Lauder, Inc. | Opalescent cosmetic compositions and methods for their preparation |
| US7166686B2 (en) | 2000-06-28 | 2007-01-23 | 3M Innovative Properties Company | High refractive index pressure-sensitive adhesives |
| US7335425B2 (en) | 2000-06-28 | 2008-02-26 | 3M Innovative Properties Company | High refractive index pressure-sensitive adhesives |
| JP2016069527A (en) * | 2014-09-30 | 2016-05-09 | 松本油脂製薬株式会社 | Sticking-preventing agent for unvulcanized rubber and use of the same |
| CN110982016A (en) * | 2019-12-18 | 2020-04-10 | 广东裕田霸力科技股份有限公司 | Environment-friendly high-performance hydrolysis-resistant and aging-resistant TPR (thermal Plastic rubber) treating agent grafted through composite |
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