JP5578998B2 - Tire surface treatment composition - Google Patents
Tire surface treatment composition Download PDFInfo
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- JP5578998B2 JP5578998B2 JP2010209930A JP2010209930A JP5578998B2 JP 5578998 B2 JP5578998 B2 JP 5578998B2 JP 2010209930 A JP2010209930 A JP 2010209930A JP 2010209930 A JP2010209930 A JP 2010209930A JP 5578998 B2 JP5578998 B2 JP 5578998B2
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- 239000000203 mixture Substances 0.000 title claims description 97
- 238000004381 surface treatment Methods 0.000 title description 9
- 229920001971 elastomer Polymers 0.000 claims description 40
- 239000005060 rubber Substances 0.000 claims description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- 229920000126 latex Polymers 0.000 claims description 31
- 238000004073 vulcanization Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000839 emulsion Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000000080 wetting agent Substances 0.000 claims description 13
- 239000006229 carbon black Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000012756 surface treatment agent Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 239000002562 thickening agent Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004438 BET method Methods 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims description 2
- 239000003899 bactericide agent Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 description 16
- 150000002430 hydrocarbons Chemical class 0.000 description 16
- 239000004215 Carbon black (E152) Substances 0.000 description 14
- 230000000740 bleeding effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 239000002904 solvent Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- -1 carboxylic acid modified styrene-butadiene Chemical class 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 229920003051 synthetic elastomer Polymers 0.000 description 4
- 239000005061 synthetic rubber Substances 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 229910002021 Aerosil® TT 600 Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- ONBWNNUYXGJKKD-UHFFFAOYSA-N 1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonic acid;sodium Chemical compound [Na].CCCCC(CC)COC(=O)CC(S(O)(=O)=O)C(=O)OCC(CC)CCCC ONBWNNUYXGJKKD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- 229920000896 Ethulose Polymers 0.000 description 1
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 235000012216 bentonite Nutrition 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
- 230000001680 brushing effect Effects 0.000 description 1
- QUEICCDHEFTIQD-UHFFFAOYSA-N buta-1,3-diene;2-ethenylpyridine;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=N1 QUEICCDHEFTIQD-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 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
- 239000004816 latex Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、加硫硬化の際、ゴム特にタイヤのサイドウォール、トレッドで、加硫時にゴムと金型の間に空気が溜まることや滑性不良が原因の加硫故障を抑制するために、加硫硬化の前に塗布されるタイヤ用表面処理剤組成物に関する。 The present invention suppresses the vulcanization failure caused by the accumulation of air between the rubber and the mold at the time of vulcanization or poor lubricity at the time of vulcanization and curing, particularly in rubber, tire sidewalls and treads. The present invention relates to a tire surface treatment composition applied before vulcanization and curing.
タイヤの成形は、グリーンタイヤを加硫硬化及び成型のための型に装入する前に、そのサイドウォール又は外側全体に、一般的に外面液と呼ばれる表面処理剤を塗布する。これはタイヤと金型の間のエア抜きが不十分となり、硬化の間にタイヤ外面にゴム流れ不良が形成されることを抑制するためであり、この欠陥は特にサイドウォールで発生しやすい。そのような表面処理剤の主要な機能は、ゴムと金型の間の滑性や、閉じこめられたエアを抜けやすくする作用であり、硬化の間にタイヤ外面に形成されうる欠陥をなくすことである。この表面処理剤を塗布しないと、加硫硬化及び成形の間にエアがゴムと金型との間から抜けず、タイヤ外面に欠陥が発生する可能性が高くなる。 In the molding of a tire, a surface treatment agent generally called an outer surface liquid is applied to the entire side wall or outside of the green tire before the green tire is placed in a mold for vulcanization and molding. This is in order to prevent air bleeding between the tire and the mold from being insufficient, and to prevent a rubber flow defect from being formed on the outer surface of the tire during curing. This defect is particularly likely to occur in the sidewall. The main functions of such a surface treatment agent are the lubricity between the rubber and the mold and the function of facilitating the escape of trapped air, and by eliminating defects that can form on the outer surface of the tire during curing. is there. If this surface treatment agent is not applied, air does not escape between the rubber and the mold during vulcanization and molding, and there is a high possibility that defects will occur on the outer surface of the tire.
従来、加硫故障を抑制する表面処理剤は、種ゴムやカーボンブラックを含有する溶剤から構成される。これらの表面処理剤は、塗布及び乾燥の間に溶剤が揮発するため、火災の危険性や吸引による作業者への悪影響がある。 Conventionally, a surface treatment agent that suppresses vulcanization failure is composed of a solvent containing seed rubber or carbon black. These surface treatment agents have a risk of fire and adverse effects on workers due to suction because the solvent volatilizes during application and drying.
また、従来使用されている表面処理剤は、グリーンタイヤの外側に塗布すると早く溶剤が揮発し、ゴムに親和性が高いカーボンブラックとゴムが表面に付着する。 In addition, when a conventionally used surface treatment agent is applied to the outside of a green tire, the solvent quickly evaporates, and carbon black and rubber having high affinity for rubber adhere to the surface.
一方、一般に市販されているゴムラテックスとカーボンブラックを含有する水性表面処理剤は、十分なエア抜き性を提供するが、カーボンブラックを配合しているため乾燥皮膜が黒色となり、近年工程中にグリーンタイヤに取り付けるようになったバーコードの読み取りができない。 On the other hand, a commercially available aqueous surface treatment agent containing rubber latex and carbon black provides sufficient air venting, but since carbon black is blended, the dry film becomes black. I cannot read barcodes that are attached to tires.
本発明は、カーボンブラックを配合しているため、乾燥皮膜が黒色となってバーコード読み取りができないといった欠点がなく、加硫後の外観不良及び接着阻害を起こさないなど、ゴム製品の物性に有害作用を及ぼさず、従来通りのエア抜き性が良好な透明な皮膜を形成するタイヤ用表面処理剤組成物を提供することにある。 Since the present invention contains carbon black, there is no defect that the dried film is black and barcode reading is not possible, and it is harmful to the physical properties of rubber products, such as poor appearance after vulcanization and adhesion inhibition. An object of the present invention is to provide a tire surface treating agent composition that does not exert an action and forms a transparent film having good air bleeding as usual.
本発明者は、上記問題を解消するために鋭意検討した結果、ゴムラテックスと、非晶質シリカを含有する水性混合物が、優れたエア抜き性、滑性と従来のカーボンブラックを使用した水性組成物ではできなかったバーコード読み取り性、ゴム製品の物性に有害作用を及ぼさないことを見出して、本発明を完成するに至った。即ち、上記課題を解決するための本発明のタイヤ用表面処理剤組成物は、以下の通りである。 As a result of intensive studies to solve the above problems, the present inventor has found that an aqueous mixture containing rubber latex and amorphous silica has an excellent air bleeding property, slipperiness and an aqueous composition using conventional carbon black. The present invention has been completed by finding out that it does not adversely affect the bar code reading property and the physical properties of rubber products, which cannot be achieved with products. That is, the tire surface treating agent composition of the present invention for solving the above-described problems is as follows.
本発明組成物は、（Ａ）ゴムラテックス、（Ｂ）非晶質シリカ及び（Ｇ）水を含有し、カーボンブラックを含有しない配合組成からなるタイヤ用表面処理剤組成物である。 The composition of the present invention is a tire surface treatment composition comprising a blended composition containing (A) rubber latex, (B) amorphous silica, and (G) water, and no carbon black.
本発明組成物は、（Ａ）ゴムラテックス、（Ｂ）非晶質シリカ及び（Ｇ）水を含有し、カーボンブラックを含有しない配合組成からなり、
前記非晶質シリカは、ＢＥＴ法による比表面積１００〜６００ｍ２／ｇであって、当該組成物中０．５〜１０重量％を含有する
前記の組成物である。
The composition of the present invention comprises (A) a rubber latex, (B) amorphous silica, and (G) a blended composition that does not contain carbon black, and contains water.
The amorphous silica is a composition having a specific surface area of 100 to 600 m 2 / g according to a BET method and containing 0.5 to 10% by weight in the composition.
なお、配合量は、タイヤ用表面処理剤組成物１００重量％に対して、（Ａ）ゴムラテックス８〜３０重量％、（Ｂ）非晶質シリカ１．５〜１０重量％、（Ｃ）ワックス乳化物０〜３５重量％、（Ｄ）増粘剤０〜５重量％、（Ｅ）湿潤剤０．３〜４重量％、（Ｆ）アルカリ調整剤０．２〜４重量％及び（Ｇ）水を残部、配合することが好ましい。
前記ワックス乳化物は、天然又は合成の直鎖状炭化水素、分岐状炭化水素、環状炭化水素又はこれらの組み合わせからなり、前記ワックス乳化物成分により与えられるワックスの量は、０〜１５重量％が好ましい。
The blending amounts were (A) rubber latex 8 to 30% by weight, (B) amorphous silica 1.5 to 10% by weight, and (C) wax with respect to 100% by weight of the tire surface treatment composition. Emulsions 0-35 wt%, (D) Thickener 0-5 wt%, (E) Wetting agent 0.3-4 wt%, (F) Alkali modifier 0.2-4 wt% and (G) It is preferable to mix the remainder of water.
The wax emulsion consists of natural or synthetic linear hydrocarbons, branched hydrocarbons, cyclic hydrocarbons, or combinations thereof, and the amount of wax provided by the wax emulsion component is 0 to 15% by weight. preferable.
なお、本発明組成物は、主成分以外に殺菌剤や保存剤又はこれらの混合物を含有することが好ましい。 In addition, it is preferable that this invention composition contains a disinfectant, a preservative, or these mixtures other than a main component.
本発明組成物は、加硫前にグリーンタイヤ外面に塗布すると、良好なエア抜き性と共に良好な滑性を与えることにより、加硫故障がなく、加硫後の外観不良がなく、接着阻害しない製品を提供することができる。
本発明組成物は、加硫前にグリーンタイヤ外面に塗布すると、カーボンブラックを使用していないので、バーコード読み取りが可能となる。
The composition of the present invention, when applied to the outer surface of a green tire before vulcanization, gives good air bleeding and good lubricity, so that there is no vulcanization failure, no poor appearance after vulcanization, and no adhesion inhibition Products can be provided.
When the composition of the present invention is applied to the outer surface of a green tire before vulcanization, since it does not use carbon black, the barcode can be read.
本発明は限定されないが、タイヤ外面に加硫故障がないゴム製品の成形法も含む。
この方法は、加硫前にグリーンタイヤ外面に本発明組成物を塗布・乾燥させ、その後ゴム製品を加硫成型することである。ゴム製品は、適当な加硫条件、型で硬化される。
すなわち、この方法は、ゴム表面に加硫故障がないタイヤ製品を製造する方法において、未硬化タイヤ製品の表面を請求項１記載の組成物で塗布・乾燥し、その後このタイヤ製品を硬化させ、塗布表面に加硫故障がないタイヤを製造する方法である。
Although this invention is not limited, the molding method of the rubber product which does not have a vulcanization failure in a tire outer surface is also included.
This method is to apply and dry the composition of the present invention on the outer surface of the green tire before vulcanization, and then vulcanize and mold the rubber product. The rubber product is cured with suitable vulcanization conditions and molds.
That is, this method is a method for producing a tire product having no vulcanization failure on the rubber surface, the surface of the uncured tire product is applied and dried with the composition according to claim 1, and then the tire product is cured, This is a method of manufacturing a tire having no vulcanization failure on the coated surface.
本発明組成物を、加硫するゴム基材、例えば未硬化タイヤ製品、特にタイヤサイドウォール及び／又はトレッドに塗布することが好ましい。基材はタイヤに使用されるゴム組成物である。ゴム組成物は、ゴムのほかに任意の慣用の添加剤を配合した一般的なタイヤ用ゴムである。本発明組成物は、例えば未硬化タイヤ製品の外側のゴム表面を塗布・乾燥し、その後成形・加硫する方法で得られたタイヤ製品が好ましい。なお、本発明組成物は、はけ塗り、スプレー等任意の方法により塗布する。本発明組成物は、塗布後加硫される前に乾燥させることが好ましい。 The composition of the invention is preferably applied to a rubber substrate to be vulcanized, such as an uncured tire product, in particular a tire sidewall and / or tread. The base material is a rubber composition used for tires. The rubber composition is a general tire rubber in which any conventional additive is blended in addition to rubber. The composition of the present invention is preferably a tire product obtained by, for example, applying and drying an outer rubber surface of an uncured tire product, followed by molding and vulcanization. The composition of the present invention is applied by any method such as brushing or spraying. The composition of the present invention is preferably dried before vulcanization after coating.
なお、本発明組成物は、少なくとも１個のゴム表面を被覆し、接着されるべき他のゴム表面と一緒にし、その後硬化させて接着結合を完成させる方法で、得られる接着製品が望ましい。 The composition of the present invention is preferably an adhesive product obtained by a method in which at least one rubber surface is coated, combined with another rubber surface to be bonded, and then cured to complete an adhesive bond.
以下に、本発明を詳細に説明する。本発明の表面処理剤組成物は、（Ａ）ゴムラテックス、（Ｂ）非晶質シリカ及び（Ｇ）水を含有し、カーボンブラックを含有しない配合組成からなることを特徴とする。好ましくは、本発明の表面処理剤組成物は、（Ａ）ゴムラテックス、（Ｂ）非晶質シリカ、（Ｃ）ワックス乳化物、（Ｄ）湿潤剤、（Ｅ）増粘剤、（Ｆ）アルカリ調整の剤及び（Ｇ）水を含有し、カーボンブラックを含有しない配合組成からなることを特徴とする。 The present invention is described in detail below. The surface treating agent composition of the present invention is characterized by comprising a blending composition containing (A) rubber latex, (B) amorphous silica, and (G) water but not carbon black. Preferably, the surface treating agent composition of the present invention comprises (A) rubber latex, (B) amorphous silica, (C) wax emulsion, (D) wetting agent, (E) thickener, (F) It is characterized by comprising a blending composition containing an alkali adjusting agent and (G) water and not containing carbon black.
本発明組成物のゴムラテックス成分は、ゴムラテックス１００重量％に対して、固形分であるゴムが３０〜７０重量％、好ましくは３０〜６０重量％を含有する水性ラテックスである。 The rubber latex component of the composition of the present invention is an aqueous latex containing 30 to 70% by weight, preferably 30 to 60% by weight of rubber as a solid content with respect to 100% by weight of rubber latex.
本発明組成物で使用されるゴムラテックスは、天然又は合成ゴム又はこれらの組み合わせであってもよい。本発明組成物のゴムラテックス成分により与えられるゴムの量は、タイヤ用表面処理剤組成物１００重量％に対して、固形分で１〜２０重量％、好ましくは３〜１５重量％の範囲である。好ましくは残部が水性媒体であり、特に水成分である。この水成分を含めると、本発明組成物のゴムラテックス成分は、タイヤ用表面処理剤組成物１００重量％に対して、ゴムラテックス４〜３０重量％である。 The rubber latex used in the composition of the present invention may be natural or synthetic rubber or a combination thereof. The amount of rubber provided by the rubber latex component of the composition of the present invention ranges from 1 to 20% by weight, preferably from 3 to 15% by weight, based on 100% by weight of the tire surface treatment composition. . Preferably the balance is an aqueous medium, especially a water component. When this water component is included, the rubber latex component of the composition of the present invention is 4 to 30% by weight of rubber latex with respect to 100% by weight of the surface treating agent composition for tires.
合成ゴムを使用する場合には、被覆される基材のゴムと良好な相容性であり、加えて接着阻害しない性質である必要がある。好適なゴムラテックスは、ゴムラテックス１００重量％に対して合成ゴム３０〜７０重量％を含有していることが好ましい。好適な合成物質には、例えばアクリロニトリル−ブタジエン（ＮＢＲ）、スチレン−ブタジエン（ＳＢＲ）、カルボン酸変性スチレン−ブタジエン、スチレン−ブタジエン−ビニルピリジン（ＶＰ）が挙げられる。 In the case of using a synthetic rubber, it is necessary to have a good compatibility with the rubber of the substrate to be coated and a property that does not inhibit adhesion. A suitable rubber latex preferably contains 30 to 70% by weight of synthetic rubber with respect to 100% by weight of rubber latex. Suitable synthetic materials include, for example, acrylonitrile-butadiene (NBR), styrene-butadiene (SBR), carboxylic acid modified styrene-butadiene, and styrene-butadiene-vinylpyridine (VP).
被覆される基材のゴムと良好な相容性であるか又は接着阻害しない性質である合成ゴムのＴｇ（ガラス転移点）は、−６０〜２５℃が好ましい。 The Tg (glass transition point) of the synthetic rubber, which has good compatibility with the rubber of the substrate to be coated or does not inhibit adhesion, is preferably −60 to 25 ° C.
本発明組成物中のゴムラテックスの量が、タイヤ用表面処理剤組成物１００重量％に対して、固形分で１重量％未満では、非晶質シリカの固着効果が低く、必要な性能を発揮しない。一方、本発明組成物中のゴムラテックスの量が、タイヤ用表面処理剤組成物１００重量％に対して、固形分で２０重量％を超えるとゴムラテックスの物性の影響により塗布面のタックが増大し、滑性低下を起こし必要な性能を発揮しない。 When the amount of the rubber latex in the composition of the present invention is less than 1% by weight in solid content with respect to 100% by weight of the surface treating agent composition for tires, the fixing effect of amorphous silica is low and the required performance is exhibited. do not do. On the other hand, when the amount of the rubber latex in the composition of the present invention exceeds 20% by weight in solid content with respect to 100% by weight of the tire surface treatment composition, the tackiness of the coated surface increases due to the influence of the physical properties of the rubber latex. However, the slipperiness is lowered and the required performance is not exhibited.
本発明組成物中のワックス乳化物成分は、特に滑性が必要とされる際に使用するとよい。タイヤ用表面処理剤組成物１００重量％に対して、０〜３５重量％、好ましくは０〜３０重量％を含有する任意のワックス乳化物である。 The wax emulsion component in the composition of the present invention is preferably used particularly when lubricity is required. Any wax emulsion containing 0 to 35% by weight, preferably 0 to 30% by weight, based on 100% by weight of the tire surface treating agent composition.
本発明組成物で使用されるワックス乳化物は、例えば炭素原子１０〜４０個を有する、天然又は合成の直鎖状炭化水素、分岐状炭化水素、環状炭化水素又はこれらの組み合わせであってよい。本発明の表面処理剤組成物のワックス乳化物成分により与えられるワックスの量は、タイヤ用表面処理剤組成物１００重量％に対して、固形分で０〜１８重量％、好ましくは固形分で０〜１５重量％の範囲である。 The wax emulsion used in the composition of the present invention may be a natural or synthetic linear hydrocarbon, branched hydrocarbon, cyclic hydrocarbon or a combination thereof having, for example, 10 to 40 carbon atoms. The amount of wax provided by the wax emulsion component of the surface treatment agent composition of the present invention is 0 to 18% by weight, preferably 0 in terms of solids, relative to 100% by weight of the surface treatment agent composition for tires. It is in the range of ˜15% by weight.
本発明組成物中のワックスの量が、固形分で１８重量％を超えると塗布された組成物皮膜が加硫に伴う高温により溶融し、ゴム表面から流れてしまい必要な性能を発揮しない。 If the amount of the wax in the composition of the present invention exceeds 18% by weight in terms of solid content, the applied composition film melts due to the high temperature accompanying vulcanization and flows from the rubber surface and does not exhibit the required performance.
本発明組成物中の非晶質シリカ成分は、タイヤ用表面処理剤組成物１００重量％に対して、１．５〜１０重量％を含有する。 The amorphous silica component in the composition of the present invention contains 1.5 to 10% by weight with respect to 100% by weight of the tire surface treating agent composition.
本発明組成物で使用される非晶質シリカは、ＢＥＴ法による比表面積１００〜６００ｍ２／ｇを有する。本発明組成物で使用される非晶質シリカは、比表面積１００ｍ２／ｇ未満では、溶媒分散後のシリカ凝集粒径が小さいためスペーサー効果が小さく、エア抜き性が低下し加硫故障抑制効果を発揮しない。また、硬化後にタイヤ表面に粉残りが発生しやすく外観不良となりやすい。一方、比表面積が６００ｍ２／ｇを超えると、非晶質シリカの付着が少なくなりエア抜き性が低下し、加硫故障抑制効果を発揮しにくくなる。また、硬化後にタイヤ表面に粉残りが発生しやすく外観不良となりやすい。 The amorphous silica used in the composition of the present invention has a specific surface area of 100 to 600 m 2 / g according to the BET method. When the specific surface area is less than 100 m 2 / g, the amorphous silica used in the composition of the present invention has a small spacer agglomerated particle size after dispersion of the solvent, so that the spacer effect is small and the air bleeding property is reduced, thereby suppressing the vulcanization failure. Does not demonstrate. Further, powder residue tends to occur on the tire surface after curing, which tends to cause poor appearance. On the other hand, when the specific surface area exceeds 600 m 2 / g, the adhesion of amorphous silica is reduced, the air venting property is lowered, and the vulcanization failure suppressing effect is hardly exhibited. Further, powder residue tends to occur on the tire surface after curing, which tends to cause poor appearance.
本発明組成物中の非晶質シリカの量が、タイヤ用表面処理剤組成物１００重量％に対して、１．５重量％未満では、エア抜き性及び滑性が低下し加硫故障抑制効果を発揮しない。一方、本発明組成物中の非晶質シリカの量が、タイヤ用表面処理剤組成物１００重量％に対して、１０重量％を超えると、硬化後にタイヤ表面に粉残りが発生し、外観不良となる。 When the amount of the amorphous silica in the composition of the present invention is less than 1.5% by weight with respect to 100% by weight of the surface treating agent composition for tires, the bleedability and the slipperiness are lowered and the effect of suppressing vulcanization failure is achieved. Does not demonstrate. On the other hand, if the amount of amorphous silica in the composition of the present invention exceeds 10% by weight relative to 100% by weight of the tire surface treatment composition, powder residue is generated on the tire surface after curing, resulting in poor appearance. It becomes.
本発明組成物中のシリカとして、コロイダルシリカを使用すると、エア抜き性が低下し加硫故障抑制効果を発揮しない。従って、本発明組成物では非晶質シリカがエア抜き性が良好で加硫故障抑制効果を発揮するので好適に使用できる。
非晶質シリカは、単一種類でも複数の種類の併用でも構わない。
When colloidal silica is used as the silica in the composition of the present invention, the air bleeding property is lowered and the effect of suppressing vulcanization failure is not exhibited. Therefore, in the composition of the present invention, amorphous silica can be preferably used because it has good air venting and exhibits a vulcanization failure suppressing effect.
The amorphous silica may be a single type or a combination of a plurality of types.
本発明組成物中の湿潤剤として、溶剤及び界面活性剤を使用することができる。好ましい湿潤剤の配合量は、タイヤ用表面処理剤組成物１００重量％に対して、湿潤剤０．３〜４重量％である。溶剤は、脂肪族アルコール、エチルセロソルブやブチルセロソルブに代表されるグリコール系溶剤が製品安定性のため好ましい。界面活性剤は、製品安定性の観点から、アニオン系界面活性剤が好ましい。アニオン系界面活性剤は、セッケン、アルキル硫酸エステル、アルキルエーテル硫酸エステル、アルキルベンゼンスルホン酸、アルファオレフィンスルホン酸、アルキルスルホサクシネートの部分塩又は類似物又はこれらの混合物が好ましい。
溶剤及び界面活性剤は、単一種類でも複数の種類の併用でも構わない。
As a wetting agent in the composition of the present invention, a solvent and a surfactant can be used. A preferable amount of the wetting agent is 0.3 to 4% by weight of the wetting agent with respect to 100% by weight of the tire surface treatment composition. The solvent is preferably a glycol solvent typified by an aliphatic alcohol, ethyl cellosolve or butyl cellosolve because of product stability. The surfactant is preferably an anionic surfactant from the viewpoint of product stability. The anionic surfactant is preferably soap, an alkyl sulfate ester, an alkyl ether sulfate ester, an alkylbenzene sulfonic acid, an alpha olefin sulfonic acid, a partial salt of an alkyl sulfosuccinate or the like, or a mixture thereof.
The solvent and the surfactant may be a single type or a combination of a plurality of types.
グリーンタイヤの貼り合わせ部へ本発明組成物が侵入することによる接着阻害防止及び製品安定性のため、本発明組成物中に任意の好適な増粘剤を使用することができる。一般に本発明の組成物１００重量％に対して、増粘剤５重量％まで使用することができ、有利には０．５〜４重量％を使用する。使用できる好適な増粘剤の例は、ナトリウムカルボキシメチルセルロース、ベントナイト、デンプン、ポリアクリル酸、水溶性セルロース誘導体、例えばヒドロキシエチルセルロース、メチルセルロース、メチルヒドロキシプロピルセルロース、エチルヒドロキシエチルセルロース又は類似物又はこれらの混合物である。
増粘を助長させるために、アルカリ調整剤０．２〜４重量％を使用する。使用できる好適なアルカリ調整剤の例は、アンモニアもしくは、アンモニアを溶媒に溶解したものである。
Any suitable thickening agent can be used in the composition of the present invention for preventing adhesion inhibition and product stability due to the composition of the present invention entering the bonded portion of the green tire. In general, up to 5% by weight of thickener can be used, preferably 0.5 to 4% by weight, based on 100% by weight of the composition according to the invention. Examples of suitable thickeners that can be used are sodium carboxymethylcellulose, bentonite, starch, polyacrylic acid, water-soluble cellulose derivatives such as hydroxyethylcellulose, methylcellulose, methylhydroxypropylcellulose, ethylhydroxyethylcellulose or the like or mixtures thereof. is there.
In order to promote the thickening, 0.2 to 4% by weight of an alkali modifier is used. Examples of suitable alkali modifiers that can be used are ammonia or ammonia dissolved in a solvent.
本発明組成物は、製品安定性向上やコストダウンの観点から、高濃度化してもよい。ただし、使用の便宜を考慮すると、固形分は前記本発明の組成物１００重量％に対して３〜５０重量％を含有していることが好ましい。 The composition of the present invention may be highly concentrated from the viewpoint of improving product stability and reducing costs. However, considering the convenience of use, it is preferable that the solid content contains 3 to 50% by weight with respect to 100% by weight of the composition of the present invention.
本発明組成物を、ハケやスポンジによる塗布やスプレー塗布など従来の塗布法でゴムに塗布する。本発明組成物を、好適なペイント装置を用い、一般に塗料量、ゴム表面１平方センチ当りの乾燥重量が０．００００１〜０．０２ｇ、好ましくは０．００００５〜０．０１ｇを塗布・乾燥させる。この範囲は、外観不良を起こさず、エア抜き性を提供するのに必要な量である。次いで生ゴム製品を成形する。 The composition of the present invention is applied to rubber by a conventional application method such as application by brush or sponge or spray application. The composition of the present invention is generally applied and dried at a coating amount of 0.00001 to 0.02 g, preferably 0.00005 to 0.01 g of a dry weight per square centimeter of rubber surface, using a suitable paint apparatus. This range is an amount necessary to provide air bleeding without causing poor appearance. The raw rubber product is then molded.
本発明組成物を、タイヤ表面に塗布、加硫成型させる場合、タイヤ表面上に残るが、白くならないため外観への悪影響は与えない。また、ワックスを配合している場合は艶出し効果が得られるとともに、オゾン劣化防止性も向上する。また本発明組成物は、グリーンタイヤ用について好ましく使用できる。 When the composition of the present invention is applied to the tire surface and vulcanized and molded, it remains on the tire surface, but it does not become white and does not adversely affect the appearance. Further, when a wax is blended, a glazing effect is obtained, and the ozone deterioration prevention property is improved. The composition of the present invention can be preferably used for green tires.
本発明の外面液組成物皮膜は、成形及び硬化のためゴムが金型と接触し流れる時の滑性を付与し、非晶質シリカによりタイヤ−金型間の空気流出を可能にするため、タイヤサイドウォール中に加硫故障が発生しない。また、加硫後の外観不良がなく、接着阻害しない。
The outer surface liquid composition film of the present invention provides lubricity when rubber is in contact with the mold and flows for molding and curing, and allows the air to flow between the tire and the mold by amorphous silica. No vulcanization failure occurs in the tire sidewall. Moreover, there is no appearance defect after vulcanization, and adhesion is not hindered.
以下、本発明の実施例を示すが、本発明はこれらの実施例に限定されるものではない。
（実施例１）
第１組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）
２３重量％、比表面積が約２００ｍ２／ｇの非晶質シリカ（ＤＳＬ．ジャパン（株）製、アエロジルＴＴ−６００）１．５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７２重量％を配合した。
Examples of the present invention will be described below, but the present invention is not limited to these examples.
Example 1
The first composition is a rubber latex having a Tg of about 0 ° C. (manufactured by DIC Corporation, Boncourt AC-501).
23% by weight, amorphous silica having a specific surface area of about 200 m 2 / g (DSL. Japan Co., Ltd., Aerosil TT-600) 1.5% by weight, butyl cellosolve 2% by weight as a wetting agent, dioctylsulfosuccinate sodium 1.5% by weight of salt (Air Roll CT-1 manufactured by Toho Chemical Industry Co., Ltd.) and 72% by weight of water were blended.
（実施例２）
第２組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、比表面積が約２００ｍ２／ｇの非晶質シリカ（ＤＳＬ．ジャパン（株）製、アエロジルＴＴ−６００）１．５重量％、湿潤剤としてブチルセロソルブ２．０重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７２重量％を配合した。
(Example 2)
The second composition is a wax emulsion (a combination of 8% by weight of rubber latex having a Tg of about 0 ° C., manufactured by DIC Corporation, Boncoat AC-501), a synthetic linear hydrocarbon, and a branched hydrocarbon ( On the other hand, 15% by weight, manufactured by Yushi Kogyo Co., Ltd., VOA-2080), 1.5% by weight of amorphous silica having a specific surface area of about 200 m 2 / g (manufactured by DSL Japan, Aerosil TT-600), As a wetting agent, 2.0% by weight of butyl cellosolve, 1.5% by weight of dioctylsulfosuccinate sodium salt (manufactured by Toho Chemical Industry Co., Ltd., Airroll CT-1) and 72% by weight of water were blended.
（比較例１）
第３組成物は、Ｔｇが約３５℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＮ−１５５−Ｅ）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、比表面積が約２００ｍ２／ｇの非晶質シリカ（ＤＳＬ．ジャパン（株）製、アエロジルＴＴ−６００）１．５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７２重量％を配合した。
(Comparative Example 1)
The third composition is a wax emulsification that is a combination of 8% by weight of rubber latex having a Tg of about 35 ° C (manufactured by DIC Corporation, Boncoat AN-155-E), a synthetic linear hydrocarbon, and a branched hydrocarbon. 15% by weight (manufactured by Yushi Kogyo Co., Ltd., VOA-2080), 1.5 wt.% Of amorphous silica having a specific surface area of about 200 m 2 / g (manufactured by DSL Japan Co., Ltd., Aerosil TT-600) %, 2% by weight of butyl cellosolve, 1.5% by weight of dioctylsulfosuccinate sodium salt (produced by Toho Chemical Co., Ltd., Airroll CT-1) and 72% by weight of water as a wetting agent.
（比較例２）
第４組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、粒子径が約１０〜２０ｎｍのコロイダルシリカ（日産化学工業（株）製、スノーテックス２０）５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水６８．５重量％を配合した。
(Comparative Example 2)
The fourth composition is a wax emulsion (a combination of 8% by weight of rubber latex having a Tg of about 0 ° C. (Don Co., Ltd., Boncoat AC-501), a synthetic linear hydrocarbon and a branched hydrocarbon ( On the other hand, 15% by weight manufactured by Yushi Kogyo Co., Ltd., VOA-2080), 5% by weight of colloidal silica (Nissan Chemical Industry Co., Ltd., Snowtex 20) having a particle size of about 10 to 20 nm, and 2% by weight of butyl cellosolve as a wetting agent. %, 1.5% by weight of dioctyl sulfosuccinate sodium salt (manufactured by Toho Chemical Co., Ltd., Aerol CT-1) and 68.5% by weight of water.
（比較例３）
第５組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７３．５重量％を配合した。
(Comparative Example 3)
The fifth composition is a wax emulsion (a combination of 8% by weight of rubber latex having a Tg of about 0 ° C., manufactured by DIC Corporation, Boncoat AC-501), a synthetic linear hydrocarbon, and a branched hydrocarbon ( On the other hand, 15% by weight manufactured by Yushi Kogyo Co., Ltd., VOA-2080), 2% by weight of butyl cellosolve as a wetting agent, 1.5% by weight of dioctylsulfosuccinate sodium salt (manufactured by Toho Chemical Industry Co., Ltd., Airroll CT-1) And 73.5% by weight of water.
（比較例４）
第６組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、比表面積が約５０ｍ２／ｇの非晶質シリカ（ＤＳＬ．ジャパン（株）製、アエロジル５０）１．５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７２重量％を配合した。
(Comparative Example 4)
The sixth composition is a wax emulsion (a combination of 8% by weight of rubber latex (DIC Co., Ltd., Boncoat AC-501) having a Tg of about 0 ° C., a synthetic linear hydrocarbon, and a branched hydrocarbon ( On the other hand, 15% by weight, manufactured by Yushi Kogyo Co., Ltd., VOA-2080), amorphous silica having a specific surface area of about 50 m 2 / g (manufactured by DSL Japan, Aerosil 50) 1.5% by weight, wetting agent As a mixture, 2% by weight of butyl cellosolve, 1.5% by weight of dioctylsulfosuccinate sodium salt (manufactured by Toho Chemical Industry Co., Ltd., Airroll CT-1) and 72% by weight of water were blended.
（比較例５）
第７組成物は、Ｔｇが約０℃のゴムラテックス（ＤＩＣ（株）製、ボンコートＡＣ−５０１）８重量％、合成の直鎖状炭化水素、分岐状炭化水素の組み合わせであるワックス乳化物（一方社油脂工業（株）製、ＶＯＡ−２０８０）１５重量％、比表面積が約８５０ｍ２／ｇの非晶質シリカ（東ソー・シリカ（株）製、ニップジェルＣＸ−２００）１．５重量％、湿潤剤としてブチルセロソルブ２重量％、ジオクチルスルホサクシネートナトリウム塩（東邦化学工業（株）製、エアロールＣＴ−１）１．５重量％及び水７２重量％を配合した。
(Comparative Example 5)
The seventh composition is a wax emulsion (a combination of 8% by weight of rubber latex having a Tg of about 0 ° C., manufactured by DIC Corporation, Boncoat AC-501), a synthetic linear hydrocarbon, and a branched hydrocarbon ( On the other hand, 15% by weight, manufactured by Yushi Kogyo Co., Ltd., VOA-2080), 1.5% by weight of amorphous silica having a specific surface area of about 850 m 2 / g (manufactured by Tosoh Silica Co., Ltd., Nipgel CX-200) As a wetting agent, 2% by weight of butyl cellosolve, 1.5% by weight of dioctylsulfosuccinate sodium salt (Air Roll CT-1 manufactured by Toho Chemical Industry Co., Ltd.) and 72% by weight of water were blended.
［実験例］
一般的にサイドウォールに使用されているＮＲ／ＢＲをロールでシート出しをして、５センチ×１０センチ及び１０センチ×１８センチ、厚さ５ミリのサイズにカットする。
[Experimental example]
Generally, NR / BR used for the sidewall is sheeted with a roll and cut into a size of 5 cm × 10 cm, 10 cm × 18 cm, and 5 mm thick.
各表面処理剤組成物を、カットしたゴムシートの片側に、１平方センチ当り約０．００４ｇを市販のハケを用いて塗布し、乾燥させる。 Each surface treating agent composition is applied to one side of the cut rubber sheet by applying about 0.004 g per square centimeter using a commercially available brush and dried.
約１８０℃に加熱したプレス機で金型をあらかじめ加熱しておき、金型にサイズの異なる２枚のゴムシートを重ね合わせて置き、２０ｋｇ／平方センチの圧力を掛けて、１０分間加硫を行う。 The mold is pre-heated with a press machine heated to about 180 ° C, two rubber sheets of different sizes are placed on the mold, and a pressure of 20 kg / square centimeter is applied to vulcanize for 10 minutes. Do.
（剥離試験）
その後、幅２０ミリ、長さ１００ミリに裁断し、オートグラフにより接合部の剥がれを確認する。１５Ｎ／ｃｍ未満で剥離した場合を×とする。
(Peel test)
Then, it cuts into width 20mm and length 100mm, and confirms peeling of a junction part by an autograph. The case where it peeled at less than 15 N / cm is set as x.
（エア抜き性試験）
加硫ゴムシートの重なった部分の起泡状態を確認し、起泡が多いものはエア抜き性が低いと判定する。
(Air bleeding test)
The foaming state of the overlapped portion of the vulcanized rubber sheet is confirmed, and those with much foaming are judged to have low air bleeding properties.
（滑性試験）
各表面処理剤組成物を塗布・乾燥したゴムシートを１８０℃雰囲気下で５分加熱し、２２０ｇのステンレス板を試料の上に置きバネ秤りを用いて最大摩擦力を測定する。
(Lubricity test)
The rubber sheet coated with each surface treatment composition and dried is heated at 180 ° C. for 5 minutes, a 220 g stainless steel plate is placed on the sample, and the maximum frictional force is measured using a spring scale.
[結果]
比較例１は、剥離試験において、剥離を示した。
[result]
Comparative Example 1 showed peeling in the peeling test.
比較例２及び３は、エア抜き性が低い。 Comparative Examples 2 and 3 have low air bleeding properties.
比較例４は、溶媒分散後のシリカ凝集粒径が小さいためスペーサー効果が小さく、エア抜き性が低下し加硫故障抑制効果を発揮せず、硬化後にタイヤ表面に粉残りが発生しやすく外観不良となりやすい。比較例５は、シリカの付着状態が悪くエア抜き性が低下し加硫故障抑制効果を発揮せず、硬化後にタイヤ表面に粉残りが発生しやすく外観不良となりやすい。 Comparative Example 4 has a small spacer agglomerated particle size after dispersion of the solvent, so that the spacer effect is small, the air bleeding property is lowered and the effect of suppressing vulcanization failure is not exhibited, and powder residue is likely to occur on the tire surface after curing, resulting in poor appearance. It is easy to become. In Comparative Example 5, the adhesion state of silica is poor and the air venting property is deteriorated and the effect of suppressing vulcanization failure is not exhibited.
実施例１及び２の表面処理剤組成物は、外観不良や接着阻害がなく、高温でもゴム上に残り滑性を示し、エア抜き性に優れた性能を提供した。 The surface treating agent compositions of Examples 1 and 2 did not have poor appearance or adhesion inhibition, remained on the rubber even at high temperatures, and provided excellent performance in air bleeding.
Claims (11)
前記ゴムラテックスのＴｇ（ガラス転移点）は、−６０〜２５℃であり、
前記非晶質シリカは、ＢＥＴ法による比表面積１００〜６００ｍ ２ ／ｇである
タイヤ用表面処理剤組成物。 (A) rubber latex, (B) containing amorphous silica and (G) water and consisting of a compound composition not containing carbon black ,
Tg (glass transition point) of the rubber latex is −60 to 25 ° C.
The surface treatment agent composition for tires , wherein the amorphous silica has a specific surface area of 100 to 600 m < 2 > / g by BET method .
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| JPS6021843B2 (en) * | 1980-04-28 | 1985-05-29 | 伯東化学株式会社 | Water-based external paint composition for tire molding |
| US4857397A (en) * | 1988-04-08 | 1989-08-15 | The Goodyear Tire & Rubber Company | Tire coating composition and use for curing tires |
| KR900004822A (en) * | 1988-09-19 | 1990-04-13 | 죠오그 더블유. 파스케 | Transparent coating composition for rubber products and molding method of rubber products |
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