JP5015476B2 - Electrode / electric circuit protective agent composition - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an electrode / electric circuit protective agent composition, and more particularly, to an electrode / electric circuit protective agent composition capable of greatly reducing the time required for electrode / electric circuit protection.

  Conventionally, as a protective agent composition for protecting electrodes and electrical circuits, a special heating device is not required, and the protection process can be simplified. A functional silicone rubber composition is used (see Patent Documents 1 and 2).

In recent years, there has been a tendency to shorten the time of the electrode / electric circuit protection process, but the dealcoholization condensation curable silicone rubber composition is slow to cure, and after applying it to the electrode / electric circuit, it can be cured for a certain period of time. For example, when applying both front and back surfaces of an electrode / electric circuit, the protective agent composition cannot be applied to the other surface until the protective agent composition applied to one surface is cured. was there.
JP 2004-149611 A JP-A-2005-120155

  An object of the present invention is to provide an electrode / electric circuit protective agent composition capable of greatly shortening the electrode / electric circuit protection process time.

  The electrode / electric circuit protective agent composition of the present invention has a dry-to-touch time of 3 minutes or less under conditions of a temperature of 25 ° C. and a humidity of 50% RH as defined in JIS K 5600-1-1: 1999. It comprises an alcohol condensation reaction curable silicone rubber composition.

  According to the protective agent composition of the present invention, it is possible to greatly shorten the time required for the electrode / electric circuit protection process.

The electrode / electric circuit protective composition of the present invention will be described in detail.
The protective agent composition of the present invention has a dealcoholization condensation reaction curability having a touch drying time of 3 minutes or less under the conditions of a temperature of 25 ° C. and a humidity of 50% RH as defined in JIS K 5600-1-1: 1999. It consists of a silicone rubber composition. The dry-to-touch time defined in the present invention is the standard defined in JIS K 5600-1-1: 1999 “Paint General Test Methods—Part 1: General Rules—Section 1: Test General (Conditions and Methods)”. It means the time until the fingertip is not soiled by lightly touching the center of the protective agent composition coating surface with a fingertip at a state temperature of 25 ° C. and a humidity of 50% RH.

  Further, the protective agent composition of the present invention comprises a dealcoholization condensation reaction curable silicone rubber composition, which is a silicone rubber composition that cures by releasing an alcohol by a condensation reaction, for example, in one molecule. It comprises at least a diorganopolysiloxane having at least two silanol groups (silicon atom-bonded hydroxyl groups), an alkoxysilane having at least two alkoxysilyl groups in one molecule or a partially hydrolyzed condensate thereof, and a condensation reaction catalyst. Composition: diorganopolysiloxane having at least two alkoxysilyl groups in one molecule, alkoxysilane having at least two silicon-bonded alkoxy groups in one molecule or a partially hydrolyzed condensate thereof, and for condensation reaction The composition which consists of a catalyst at least is mentioned. In such a dealcoholization condensation reaction curable silicone rubber composition, the dry time of touching under conditions of a temperature of 25 ° C. and a humidity of 50% RH specified in JIS K 5600-1-1: 1999 shall be within 3 minutes. For this purpose, the content of the alkoxysilane having at least two silicon atom-bonded alkoxy groups in one molecule or a partial hydrolysis condensate thereof is extremely reduced or the content of the condensation reaction catalyst is reduced. Although it can be achieved by increasing the amount extremely more than usual, there is a problem that these compositions have extremely poor handling workability and storage stability.

（式中、Ｒ¹は前記と同じであり、Ｒ³はアルキレン基である。）
で表されるアルキレンシロキシシルアルキレン基であり、ａは０〜２の整数である。｝
で表されるアルコキシシリル含有基を有するジオルガノポリシロキサン １００質量部、
(Ｂ)一般式：
Ｒ¹ _bＳi(ＯＲ²)_4-b
（式中、Ｒ¹およびＲ²は前記と同様であり、ｂは０〜２の整数である。）
で表されるアルコキシシランまたはその部分加水分解縮合物 ０.５〜３０質量部、
および
(Ｃ)縮合反応用触媒 ０.１〜１０質量部
から少なくともなるものであることが好ましい。 For this reason, the storage stability and handling workability are good, and the touch drying time under the conditions of temperature 25 ° C. and humidity 50% RH specified in JIS K 5600-1-1: 1999 can be achieved within 3 minutes. Examples of the alcohol condensation reaction curable silicone rubber composition include:
(A) The viscosity at 25 ° C. is 10 to 1,000,000 mPa · s, and at least two general formulas in one molecule:
-X-SiR ¹ _a (OR ² ) _3-a
{Wherein R ¹ is a substituted or unsubstituted monovalent hydrocarbon group, R ² is an alkyl group, X is an oxy group, an alkylene group, or a general formula:

(In the formula, R ¹ is the same as above, and R ³ is an alkylene group.)
And a is an integer of 0-2. }
100 parts by mass of a diorganopolysiloxane having an alkoxysilyl-containing group represented by
(B) General formula:
R ¹ _b Si (OR ² ) _4-b
(In the formula, R ¹ and R ² are the same as described above, and b is an integer of 0 to 2.)
0.5-30 parts by mass of an alkoxysilane represented by
and
(C) Catalyst for condensation reaction It is preferably composed of at least 0.1 to 10 parts by mass.

で表されるアルキレンシロキシシルアルキレン基である。Ｘのアルキレン基としては、エチレン基、メチルエチレン基、プロピレン基、ブチレン基、ペンチレン基、ヘキシレン基が挙げられる。また、Ｘのアルキレンシロキシシルアルキレン基において、Ｒ¹は同じかまたは異なる、置換もしくは非置換の一価炭化水素基であり、前記と同様の基が例示される。また、Ｒ³は同じかまたは異なるアルキレン基であり、前記Ｘのアルキレン基と同様の基が例示される。また、ａは０〜２の整数であり、好ましくは、０または１であり、特に好ましくは、０である。 Component (A) is the main component of the composition and has the general formula:
-X-SiR ¹ _a (OR ² ) _3-a
Is a diorganopolysiloxane having at least 2, preferably at least 3, alkoxysilyl-containing groups per molecule. R ¹ in the alkoxysilyl-containing group is a substituted or unsubstituted monovalent hydrocarbon group, for example, an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group; a cyclopentyl group, A cycloalkyl group such as a cyclohexyl group; an alkenyl group such as a vinyl group, an allyl group, a butenyl group, a pentenyl group, and a hexenyl group; an aryl group such as a phenyl group, a tolyl group, and a xylyl group; an aralkyl group such as a benzyl group and a phenethyl group; Examples include halogenated alkyl groups such as 3,3,3-trifluoropropyl group and 3-chloropropyl group, preferably an alkyl group and an aryl group, and particularly preferably a methyl group and a phenyl group. R ² is an alkyl group, and examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group and an ethyl group are preferable. X is an oxy group, an alkylene group, or a general formula:

Is an alkylenesiloxysylalkylene group represented by the formula: Examples of the alkylene group for X include an ethylene group, a methylethylene group, a propylene group, a butylene group, a pentylene group, and a hexylene group. In the alkylenesiloxysylalkylene group of X, R ¹ is the same or different, substituted or unsubstituted monovalent hydrocarbon group, and examples thereof are the same groups as described above. R ³ is the same or different alkylene group, and examples thereof are the same groups as the alkylene group for X. A is an integer of 0 to 2, preferably 0 or 1, particularly preferably 0.

  Examples of the alkoxysilyl-containing group in the component (A) include an alkoxysiloxy group such as trimethoxyloxy group, triethoxysiloxy group, methyldimethoxysiloxy group, phenyldimethoxysiloxy group; trimethoxysilylethyl group, trimethoxysilyl Alkoxysilylalkyl groups such as propyl group and triethoxysilylethyl group; alkoxy such as trimethoxysilylethyldimethylsiloxydimethylsilylethyl group, trimethoxysilylhexyldimethylsiloxydimethylsilylethyl group, triethoxysilylpropyldimethylsiloxydimethylsilylethyl group A silylalkylsiloxysilylalkyl group is exemplified.

Other examples of the bond to the silicon atom in component (A) include the same substituted or unsubstituted monovalent hydrocarbon groups as those described above for R ¹ , preferably alkyl groups and aryl groups, particularly preferably Is a methyl group or a phenyl group. Although the molecular structure of the component (A) is substantially linear, it may be branched to such an extent that a part of the molecular chain is acceptable. In particular, the component (A) is preferably a diorganopolysiloxane that bonds an alkoxysilyl-containing group to the molecular chain terminal and the molecular chain side chain. (A) The viscosity in 25 degreeC of a component exists in the range of 100-1,000,000 mPa * s, Preferably, it exists in the range of 100-100,000 mPa * s. This is because if the viscosity of the component (A) is less than the lower limit of the above range, the mechanical strength of the resulting silicone rubber tends to decrease, whereas if it exceeds the upper limit of the above range, the resulting silicone It is because the handling workability and application workability of the rubber composition tend to decrease.

で表すことができる。式中、Ｒ¹は同じかまたは異なる、置換もしくは非置換の一価炭化水素基であり、前記と同様の基が例示される。また、式中、Ｙは同じかまたは異なる、置換もしくは非置換の一価炭化水素基または一般式：
−Ｘ−ＳiＲ¹ _a(ＯＲ²)_3-a
で表されるアルコキシシリル含有基である。Ｙの一価炭化水素基としては、前記Ｒ¹と同様の基が例示される。また、Ｙのアルコキシシリル含有基は、前記の通りである。なお、上記一般式で表されるジオルガノポリシロキサンの一分子中、少なくとも２個のＹは上記一般式で表されるアルコキシシリル含有基であることが必要である。また、式中、ｍは１以上の整数であり、好ましくは１〜１,０００の範囲内の整数である。また、式中、ｎは０以上の整数であり、好ましくは０〜１,０００の範囲内の整数であり、特に好ましくは１〜１,０００の範囲内の整数である。 Such a diorganopolysiloxane of component (A) is, for example, a general formula:

Can be expressed as In the formula, R ¹ is the same or different substituted or unsubstituted monovalent hydrocarbon group, and examples thereof are the same as those described above. In the formula, Y is the same or different, a substituted or unsubstituted monovalent hydrocarbon group or a general formula:
-X-SiR ¹ _a (OR ² ) _3-a
Is an alkoxysilyl-containing group represented by: Examples of the monovalent hydrocarbon group for Y include the same groups as those described above for R ¹ . The alkoxysilyl-containing group for Y is as described above. In addition, in one molecule of the diorganopolysiloxane represented by the general formula, at least two Y need to be an alkoxysilyl-containing group represented by the general formula. In the formula, m is an integer of 1 or more, preferably an integer in the range of 1 to 1,000. In the formula, n is an integer of 0 or more, preferably an integer in the range of 0 to 1,000, and particularly preferably an integer in the range of 1 to 1,000.

  Among the components (A), as the diorganopolysiloxane having at least two alkoxysiloxy groups in one molecule, molecular chain both ends trimethoxysiloxy group-blocked dimethylpolysiloxane, molecular chain both ends trimethoxysiloxy group-blocked dimethyl Siloxane / methylvinylsiloxane copolymer, trimethoxysiloxy group-capped dimethylsiloxane / methylphenylsiloxane copolymer, both ends of molecular chain trimethoxysiloxy group-capped dimethylsiloxane / methyl (3,3,3-trifluoro) Propyl) siloxane copolymer is exemplified, and examples of the diorganopolysiloxane having at least two alkoxysilylalkyl groups in one molecule include trimethylsilylethyl group-blocked dimethylpolysiloxane having both molecular chains and both molecular chains. Terminal trimethoxysilyl Ethyl group-blocked dimethylsiloxane / methylvinylsiloxane copolymer, molecular chain both ends trimethoxysilylethyl group-blocked dimethylsiloxane / methylphenylsiloxane copolymer, molecular chain both ends trimethoxysilylethyl group-blocked dimethylsiloxane / methyl (3, 3,3-trifluoropropyl) siloxane copolymer, trimethoxysilylethyl group-blocked dimethylsiloxane-methyl (trimethoxysilylethyl) siloxane copolymer at both ends of the molecular chain are exemplified, and at least two in one molecule As diorganopolysiloxanes having alkoxysiloxysilylalkyl groups, molecular chain both ends trimethoxysilylethyldimethylsiloxydimethylsilylethyl-blocked dimethylpolysiloxane, molecular chain both ends trimethoxysilylethyldimethylsiloxy Methylsilylethyl-blocked dimethylsiloxane / methylvinylsiloxane copolymer, trimethoxysilylethyl dimethylsiloxydimethylsilylethyl-blocked dimethylsiloxane / methylphenylsiloxane copolymer, both ends of molecular chain trimethoxysilylethyldimethylsiloxy Dimethylsilylethyl-capped dimethylsiloxane / methyl (3,3,3-trifluoropropyl) siloxane copolymer, molecular chain both ends trimethoxysilylethyldimethylsiloxydimethylsilylethyl-capped dimethylsiloxane methyl (trimethoxysilylethyldimethyl) Illustrative is a siloxydimethylsilylethyl) siloxane copolymer. As the component (A), a mixture of two or more of these diorganopolysiloxanes may be used. The component (A) is preferably a diorganopolysiloxane having at least 3 alkoxysilyl groups in one molecule, but is different from a diorganopolysiloxane having at least 3 alkoxysilyl groups in one molecule. It may be a mixture with a diorganopolysiloxane having two alkoxysilyl groups in the molecule. When a mixture of a diorganopolysiloxane having at least three alkoxysilyl groups in one molecule and a diorganopolysiloxane having two alkoxysilyl groups in one molecule is used as component (A), The content of the diorganopolysiloxane having at least three alkoxysilyl groups in the mixture is preferably at least 10% by mass, more preferably at least 25% by mass, in particular at least It is preferable that it is 40 mass%.

  Such component (A) is, for example, an organopolysiloxane having both molecular chain ends blocked with silicon-bonded hydrogen atoms, as described in US Pat. No. 4,874,827 (corresponding to Japanese Patent No. 2529237). A method in which an alkoxysilane containing an alkenyl group such as vinyltrimethoxysilane is hydrosilylated with a platinum catalyst, or an organopolysiloxane in which both ends of the molecular chain are blocked with an alkenyl group such as a vinyl group and trimethoxysilylethyltetra Examples thereof include a method in which a trimethoxy serial kill group-containing tetraorganodisiloxane such as methyldisiloxane is prepared by a hydrosilylation reaction with a platinum catalyst.

Component (B) is a cross-linking agent for the composition, and has the general formula:
R ¹ _b Si (OR ² ) _4-b
Or a partially hydrolyzed condensate thereof. In the formula, R ¹ is a substituted or unsubstituted monovalent hydrocarbon group, and examples thereof are the same as those described above, preferably an alkyl group and an aryl group, and particularly preferably a methyl group and a phenyl group. . In the formula, R ² is an alkyl group, and examples thereof are the same groups as described above, preferably a methyl group and an ethyl group. Moreover, in formula, b is an integer of 0-2, Preferably it is 0 or 1, Especially preferably, it is 0.

  Examples of such component (B) include tetrafunctional silanes such as tetramethoxysilane, tetraethoxysilane, and methyl cellosolve orthosilicate; methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, vinyltrimethoxysilane, phenyl Trifunctional alkoxysilanes such as trimethoxysilane; bifunctional alkoxysilanes such as dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, divinyldimethoxysilane, and diphenyldimethoxysilane; and partial hydrolysis condensates of these alkoxysilanes Is done. In the above composition, two or more of these may be mixed and used as the component (B). Such (B) component is generally marketed and available.

  In the present composition, the content of the component (B) is an amount that falls within the range of 0.5 to 15 parts by mass with respect to 100 parts by mass of the component (A). This is because when the content of the component (B) is less than the lower limit of the above range, the storage stability of the resulting silicone rubber composition tends to decrease, whereas when the upper limit of the above range is exceeded, the resulting silicone This is because the curing rate of the rubber composition tends to be remarkably slow.

  Component (C) is a condensation reaction catalyst for promoting crosslinking of the composition. Examples of the component (C) include dibutyltin dilaurate, dibutyltin dioctoate, dioctyltin dilaurate, dibutyltin malate ester, stannous octoate and the like; tetrabutyltitanate, diisopropoxybis (acetylacetonate) Titanium compounds such as titanium and diisopropoxybis (ethyl acetoacetate) titanium are exemplified, and a titanium compound is particularly preferable. Such (C) component is generally marketed and available.

  In the present composition, the content of the component (C) is in the range of 0.1 to 10 parts by mass, preferably in the range of 0.3 to 6 parts by mass with respect to 100 parts by mass of the component (A). It is. This is because if the content of the component (C) is less than the lower limit of the above range, curing of the resulting silicone rubber composition is not promoted, whereas if it exceeds the upper limit of the above range, the resulting silicone rubber composition is obtained. This is because the storage stability of the product is lowered.

  In this composition, fumed silica, precipitated silica, calcined silica, quartz fine powder, calcium carbonate, fumed titanium dioxide, diatomaceous earth, aluminum hydroxide, particulate alumina, magnesia, oxidation Inorganic fillers such as zinc, zinc carbonate, and fine metal powders; and fillers obtained by surface-treating these fillers with silanes, silazanes, siloxanes, organic compounds, etc .; silatrane derivatives, carbacilatran derivatives, etc. Adhesion promoters: mold inhibitors, flame retardants, heat resistance agents, plasticizers, thixotropic agents, pigments and the like may be included as long as they do not impair the object of the present invention.

  In addition, this composition contains benzotriazole, tolyltriazole, carboxybenzotriazole, sodium benzotriazole, sodium tolyltriazole, benzotriazole butyl ester to suppress corrosion caused by sulfur-containing gas in electrodes and electric circuits and migration. , Naphthotriazole, chlorobenzotriazole, or a derivative thereof, or a mixture of two or more thereof. The content of benzotriazole or a derivative thereof is an amount that falls within a range of 1 ppm to 30% by mass unit in the composition, and preferably an amount that falls within a range of 10 ppm to 1%. This is because if the content of benzotriazole or a derivative thereof is less than the lower limit of the above range, corrosion due to sulfur-containing gas in the electrode / electric circuit or electric corrosion due to migration may not be sufficiently suppressed, If the upper limit of the above range is exceeded, the mechanical properties of the resulting silicone rubber may be reduced.

  The method for preparing the composition is not limited, but the composition needs to be prepared under moisture barrier because curing proceeds by moisture. In addition, the present composition can be stored as a one-pack type under moisture shielding, and can also be a two-pack type.

  Examples of electrodes / electric circuits to which the present composition can be applied include electrodes / electric circuits such as plasma displays, liquid crystal displays, and organic electroluminescence displays. Examples of the electrode include metal electrodes such as silver, copper, aluminum, and gold; metal oxide film electrodes such as ITO (Indium Tin Oxide). Moreover, examples of the base material of the electric circuit include glass, epoxy resin, polyimide resin, phenol resin, and ceramic.

  The method of protecting the electrode / electric circuit with the present composition is not particularly limited, and examples thereof include a method of applying the present composition to the electrode or the electric circuit with a dispenser, a scraper, or a brush. . At this time, the electrodes or the electric circuit, and the surroundings thereof may be cleaned in advance. Moreover, the thickness of this composition applied to an electrode or an electric circuit is not limited, but is preferably in the range of 10 μm to 5 mm. This is because if the thickness of the composition applied to the electrode or electric circuit is less than the above lower limit, the resulting cured product may not sufficiently protect the electrode or electric circuit from moisture or contamination. On the other hand, even if the upper limit of the above range is exceeded, there is no significant improvement in the effect of protecting the electrode or the electric circuit from moisture or contamination.

  The electrode / electric circuit protective composition of the present invention will be described in detail with reference to examples. In addition, the characteristic in an Example is the value measured in 25 degreeC. The touch-drying time of the dealcoholization condensation curable silicone rubber composition is as follows: the temperature of 25 ° C. and the humidity of 50% RH as defined in JIS K 5600-1-1: 1999. The time until the fingertip was not soiled was obtained by lightly touching the center of the surface with the fingertip.

で表される分子鎖両末端がトリメトキシシリルエチル基で封鎖されたジメチルシロキサン・メチル(トリメトキシシリルエチル)シロキサン共重合体１００質量部とＢＥＴ法による比表面積が１１０ｍ²／ｇであるヘキサメチルジシラザンで処理されたヒュームドシリカ微粉末１０質量部を４０ｍｍＨｇの減圧下、室温で３０分間混合した後、湿気遮断下、メチルトリメトキシシラン２質量部、ジイソプロポキシビス(エチルアセトアセテート)チタン２重量部を均一に混合して脱メタノール縮合反応硬化性シリコーンゴム組成物を調製した。このシリコーンゴム組成物の指触乾燥時間は６０秒であった。このシリコーンゴム組成物１ｍｌを液晶パネルの銅電極上に円状に塗布して、９０秒後に液晶パネルを反転させたが、前記組成物のだれはなく、すぐに裏面の塗布を行うことができた。
[ Reference Example 1]
Viscosity is 4,000 mPa · s, average formula:

And 100 parts by mass of a dimethylsiloxane / methyl (trimethoxysilylethyl) siloxane copolymer blocked at both ends with a trimethoxysilylethyl group, and a specific surface area of 110 m ² / g by BET method After mixing 10 parts by mass of fumed silica fine powder treated with disilazane under reduced pressure of 40 mmHg at room temperature for 30 minutes, 2 parts by mass of methyltrimethoxysilane, diisopropoxybis (ethylacetoacetate) titanium under moisture shielding 2 parts by weight were uniformly mixed to prepare a demethanol condensation reaction curable silicone rubber composition. The silicone rubber composition had a dry touch time of 60 seconds. 1 ml of this silicone rubber composition was applied in a circle on the copper electrode of the liquid crystal panel, and the liquid crystal panel was inverted after 90 seconds, but there was no dripping of the composition, and the back surface could be applied immediately. It was.

（式中、Ｚは式：

で表される基である。）
で表される分子鎖両末端がトリメトキシシリルエチルジメチルシロキシジメチルシリルエチル基で封鎖されたジメチルシロキサン・メチル(トリメトキシシリルエチルジメチルシロキシジメチルシリルエチル)シロキサン共重合体を同量用いた以外は参考例１と同様にして脱メタノール縮合反応硬化性シリコーンゴム組成物を調製した。このシリコーンゴム組成物の指触乾燥時間は６０秒であった。このシリコーンゴム組成物１ｍｌを液晶パネルの銅電極上に円状に塗布して、９０秒後に液晶パネルを反転させたが、前記組成物のだれはなく、すぐに裏面の塗布を行うことができた。
[Example 1 ]
In Reference Example 1, instead of a dimethylsiloxane / methyl (trimethoxysilylethyl) siloxane copolymer blocked at both molecular chain ends with a trimethoxysilylethyl group, the viscosity is 4,000 mPa · s, and the average formula:

(Where Z is the formula:

It is group represented by these. )
Reference is made except that the same amount of dimethylsiloxane-methyl (trimethoxysilylethyldimethylsiloxydimethylsilylethyl) siloxane copolymer in which both ends of the molecular chain are blocked with trimethoxysilylethyldimethylsiloxydimethylsilylethyl group is used. A demethanol condensation reaction curable silicone rubber composition was prepared in the same manner as in Example 1. The silicone rubber composition had a dry touch time of 60 seconds. 1 ml of this silicone rubber composition was applied in a circle on the copper electrode of the liquid crystal panel, and the liquid crystal panel was inverted after 90 seconds, but there was no dripping of the composition, and the back surface could be applied immediately. It was.

（式中、Ｚは式：

で表される基である。）
で表される分子鎖両末端がトリメトキシシリルエチルジメチルシロキシジメチルシリルエチル基で封鎖されたジメチルシロキサン・メチル(トリメトキシシリルエチルジメチルシロキシジメチルシリルエチル)シロキサン共重合体５０質量部と粘度が４,０００ｍＰａ・sであり、平均式：

で表される分子鎖両末端をトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン５０質量部との混合物１００質量部を用いた以外は参考例１と同様にして脱メタノール縮合反応硬化性シリコーンゴム組成物を調製した。このシリコーンゴム組成物の指触乾燥時間は７５秒であった。このシリコーンゴム組成物１ｍｌを液晶パネルの銅電極上に円状に塗布して、１２０秒後に液晶パネルを反転させたが、前記組成物のだれはなく、すぐに裏面の塗布を行うことができた。
[Example 2 ]
In Reference Example 1, instead of 100 parts by mass of a dimethylsiloxane-methyl (trimethoxysilylethyl) siloxane copolymer having both ends of the molecular chain blocked with a trimethoxysilylethyl group, the viscosity is 4,000 mPa · s, Average formula:

(Where Z is the formula:

It is group represented by these. )
And 50 parts by mass of a dimethylsiloxane methyl (trimethoxysilylethyldimethylsiloxydimethylsilylethyl) siloxane copolymer having both ends of the molecular chain blocked with trimethoxysilylethyldimethylsiloxydimethylsilylethyl group and a viscosity of 4, 000 mPa · s, average formula:

A demethanol condensation reaction-curable silicone rubber composition in the same manner as in Reference Example 1 except that 100 parts by mass of a mixture of 50 parts by mass of dimethylpolysiloxane capped with trimethoxysiloxy groups at both ends of the molecular chain represented by A product was prepared. The silicone rubber composition had a touch drying time of 75 seconds. 1 ml of this silicone rubber composition was applied in a circle on the copper electrode of the liquid crystal panel, and the liquid crystal panel was inverted after 120 seconds, but there was no dripping of the composition, and the back surface could be applied immediately. It was.

（式中、Ｚは式：

で表される基である。）
で表される分子鎖両末端がトリメトキシシリルエチルジメチルシロキシジメチルシリルエチル基で封鎖されたジメチルシロキサン・メチル(トリメトキシシリルエチルジメチルシロキシジメチルシリルエチル)シロキサン共重合体７５質量部と粘度が４,０００ｍＰａ・sであり、平均式：

で表される分子鎖両末端をトリメトキシシロキシ基で封鎖されたジメチルポリシロキサン２５質量部との混合物１００質量部を用いた以外は参考例１と同様にして脱メタノール縮合反応硬化性シリコーンゴム組成物を調製した。このシリコーンゴム組成物の指触乾燥時間は６０秒であった。このシリコーンゴム組成物１ｍｌを液晶パネルの銅電極上に円状に塗布して、９０秒後に液晶パネルを反転させたが、前記組成物のだれはなく、すぐに裏面の塗布を行うことができた。
[Example 3 ]
In Reference Example 1, instead of 100 parts by mass of a dimethylsiloxane-methyl (trimethoxysilylethyl) siloxane copolymer having both ends of the molecular chain blocked with a trimethoxysilylethyl group, the viscosity is 4,000 mPa · s, Average formula:

(Where Z is the formula:

It is group represented by these. )
And 75 parts by mass of a dimethylsiloxane / methyl (trimethoxysilylethyldimethylsiloxydimethylsilylethyl) siloxane copolymer having both ends of the molecular chain blocked with trimethoxysilylethyldimethylsiloxydimethylsilylethyl group and a viscosity of 4, 000 mPa · s, average formula:

A demethanol condensation reaction-curable silicone rubber composition in the same manner as in Reference Example 1 except that 100 parts by mass of a mixture of 25 parts by mass of dimethylpolysiloxane capped with trimethoxysiloxy groups at both ends of the molecular chain represented by A product was prepared. The silicone rubber composition had a dry touch time of 60 seconds. 1 ml of this silicone rubber composition was applied in a circle on the copper electrode of the liquid crystal panel, and the liquid crystal panel was inverted after 90 seconds, but there was no dripping of the composition, and the back surface could be applied immediately. It was.

で表される分子鎖両末端をトリメトキシシロキシ基で封鎖されたジメチルポリシロキサンを同量用いた以外は参考例１と同様にして脱メタノール縮合反応硬化性シリコーンゴム組成物を調製した。このシリコーンゴム組成物の指触乾燥時間は３００秒であった。このシリコーンゴム組成物１ｍｌを液晶パネルの銅電極上に円状に塗布して、９０秒後に液晶パネルを反転させたが、前記組成物は未硬化でだれてしまい、すぐに裏面の塗布を行うことができなかった。前記組成物のだれがなくなり、液晶パネルを反転して裏面に塗布を行うことができるようになるためには５００秒以上静置する必要があった。
[Comparative Example 1]
In Reference Example 1, instead of a dimethylsiloxane / methyl (trimethoxysilylethyl) siloxane copolymer blocked at both molecular chain ends with a trimethoxysilylethyl group, the viscosity is 4,000 mPa · s, and the average formula:

A demethanol condensation reaction-curable silicone rubber composition was prepared in the same manner as in Reference Example 1 except that the same amount of dimethylpolysiloxane having both ends of the molecular chain represented by the formula shown below blocked with trimethoxysiloxy groups was used. The silicone rubber composition had a touch drying time of 300 seconds. 1 ml of this silicone rubber composition was applied in a circle on the copper electrode of the liquid crystal panel, and the liquid crystal panel was inverted after 90 seconds. However, the composition was uncured and immediately applied to the back surface. I couldn't. In order for the composition to disappear and the liquid crystal panel to be turned over and applied to the back surface, it was necessary to leave it for 500 seconds or more.

  The electrode / electric circuit protective agent composition of the present invention is cured by moisture, and can sufficiently adhere to the electrode / electric circuit that contacts in the course of curing. Alternatively, it is useful for protecting electrical circuits from moisture or contamination. The electrode / electric circuit protective agent composition of the present invention, for example, significantly reduces the production process by using it as an electrode / electric circuit protective agent composition for plasma displays, liquid crystal displays, organic electroluminescence displays, etc. As a result, the manufacturing cost can be reduced.

It is sectional drawing of the liquid crystal panel used in the Example. It is sectional drawing of the liquid crystal panel produced in the Example which protected the surface of the liquid crystal panel with the hardened | cured material of the protective agent composition. It is sectional drawing of the liquid crystal panel which protected the surface and back surface of the liquid crystal panel which were produced in the Example with the hardened | cured material of a protective agent composition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2 Glass substrate 3 Copper electrode 4 External lead 5 Hardened | cured material of protective agent composition

Claims (2)

(A) The viscosity at 25 ° C. is 10 to 1,000,000 mPa · s, and at least three general formulas in one molecule:
-X-SiR ¹ _a (OR ² ) _3-a
{Wherein R ¹ represents an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, an aralkyl group, or a halogenated alkyl group, R ² represents an alkyl group, and X represents a general formula:

(In the formula, R ¹ is the same as described above, and R ³ is an alkylene group.)
And a is an integer of 0-2. }
100 parts by mass of a diorganopolysiloxane having an alkoxysilyl-containing group represented by
(B) General formula:
R ¹ _b Si (OR ² ) _4-b
(In the formula, R ¹ and R ² are the same as described above, and b is an integer of 0 to 2.)
0.5-30 parts by mass of an alkoxysilane represented by
and
(C) 0.1-10 parts by mass of condensation reaction catalyst
And a dealcoholization condensation reaction curable silicone rubber composition defined in JIS K 5600-1-1: 1999 and having a touch drying time of 3 minutes or less under the conditions of a temperature of 25 ° C. and a humidity of 50% RH. An electrode / electric circuit protective agent composition. Component (A) has the general formula:

[In the formula, R ¹ is an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, an aralkyl group, or a halogenated alkyl group,, Y one general formula:
-X-SiR ¹ _a (OR ² ) _3-a
{In the formula, R ¹ is the same as defined above, R ² is an alkyl group, X is one general formula:

(In the formula, R ¹ is the same as above, and R ³ is an alkylene group.)
And a is an integer of 0-2. }
In Ri alkoxysilyl-containing groups der represented, m is an integer of 1 or more, n is an integer from 1 to 1,000. ]
Characterized in that in a diorganopolysiloxane represented, claim 1 protectant composition.

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