JPH01219169A - Pretreating solution for electroless plating - Google Patents

Pretreating solution for electroless plating

Info

Publication number
JPH01219169A
JPH01219169A JP4298288A JP4298288A JPH01219169A JP H01219169 A JPH01219169 A JP H01219169A JP 4298288 A JP4298288 A JP 4298288A JP 4298288 A JP4298288 A JP 4298288A JP H01219169 A JPH01219169 A JP H01219169A
Authority
JP
Japan
Prior art keywords
group
integer
electroless plating
groups
plating
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
Application number
JP4298288A
Other languages
Japanese (ja)
Inventor
Takao Takita
隆夫 滝田
Takeshi Shimazaki
島崎 威
Satoshi Akazawa
赤沢 諭
Kazuichi Kuramochi
倉持 和市
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP4298288A priority Critical patent/JPH01219169A/en
Publication of JPH01219169A publication Critical patent/JPH01219169A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18Pretreatment of the material to be coated
    • C23C18/20Pretreatment of the material to be coated of organic surfaces, e.g. resins
    • C23C18/2006Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
    • C23C18/2046Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
    • C23C18/2053Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment only one step pretreatment
    • C23C18/2066Use of organic or inorganic compounds other than metals, e.g. activation, sensitisation with polymers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/10Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/18Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
    • H05K3/181Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material by electroless plating
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/38Improvement of the adhesion between the insulating substrate and the metal

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemically Coating (AREA)

Abstract

PURPOSE:To improve wettability and adhesion to plating by using a pretreating soln. contg. a silane coupling agent, a surfactant contg. fluorine and glycol ethers. CONSTITUTION:A pretreating soln. for electroless plating contg. about 0.1-10g/l silane coupling agent such as gamma-aminopropyltriethoxysilane, about 0.1-50g/l ionic surfactant contg. fluorine and about 60-1,000ml/l glycol ethers such as diethylene glycol dimethyl ether is prepd. The pretreating soln. is applied to a printed circuit board, etc. When the soln. is applied, the wettability of the board is improved and the occurrence of blowholes and the remaining of bubbles in the through holes can be prevented, so the depositability and uniformity of plating at the time of electroless plating are improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は無電解めっき用前処理液ζこ関するものであり
、特に印刷配線板の無電解銅めっき用前処理液に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pretreatment liquid for electroless plating, and particularly to a pretreatment liquid for electroless copper plating of printed wiring boards.

4、 〔従来の技術〕 印刷配線板は、銅張りまたは、銅のない積層板を穴明け
の後、無電解めっきを行うことによって製造される。
4. [Prior Art] Printed wiring boards are manufactured by drilling holes in a copper-clad or copper-free laminate and then electroless plating the board.

従来、無電解銅めっきの前処理工程としては、アルカリ
脱脂工程、コンディショニング工程、表面銅箔のソフト
エノチング工程、酸洗工程、増感工程(触媒付与)、密
着促進工程等を行っている。
Conventionally, pretreatment steps for electroless copper plating include an alkaline degreasing step, a conditioning step, a soft etching step for the surface copper foil, an acid washing step, a sensitization step (catalyst application), and an adhesion promotion step.

無電解めっき前処理としてのコンディショニングの働き
は親油性を帯びている基材を親水性にしてぬれ易くし、
後に行われる増感工程での触媒の吸着効果を促進させる
ことにある。
The function of conditioning as a pretreatment for electroless plating is to make the lipophilic base material hydrophilic and make it easier to wet.
The purpose is to promote the adsorption effect of the catalyst in the subsequent sensitization step.

このコンディショニング工程に使用されるものとして、
ガラス等のめっきのつきにくい被めっき体に用いるもの
としてシランカップリング剤を用いた特公昭59−52
701号公報に開示された技術がある。
What is used in this conditioning process is:
Japanese Patent Publication No. 59-52 using a silane coupling agent for use on objects to be plated that are difficult to plate, such as glass.
There is a technique disclosed in Japanese Patent No. 701.

(発明が解決しようとする課題) しかしながら、従来の前処理液を用いると、コンディシ
ョニングでの水ぬれ性および脱泡性が必ずしも十分でな
い場合があり、半田浴浸漬でのプローホールの発生やス
ルーホール内に気泡が残存することによる触媒が吸着し
ないことによる、リング状のめっきボイドの発生すると
いう問題が起こる。この傾向は、特に***(キリ径0.
4u以下)のスルーホールにおいて、顕著である。また
、合成樹脂に紙やガラス繊維を混入された複合材料系の
絶縁物質にあっては、そのガラス繊維等が表面に露出し
ていることがあり好適な条件を選んでもこの部分に無電
解めっきが析出しない現象が問題視されている。本発明
は、このような状況に鑑みてなされたものであり、ぬれ
性とめっき密着性に優れた無電解めっき用前処理液を提
供するものである。
(Problems to be Solved by the Invention) However, when conventional pretreatment liquids are used, water wettability and defoaming properties during conditioning may not always be sufficient, and blowholes and through holes may occur during immersion in a solder bath. A problem arises in that ring-shaped plating voids are generated due to the catalyst not being adsorbed due to residual air bubbles inside. This tendency is especially true for small holes (hole diameter 0.
This is noticeable in through-holes (4u or less). In addition, in the case of composite insulating materials made of synthetic resin mixed with paper or glass fibers, the glass fibers may be exposed on the surface, and even if suitable conditions are selected, electroless plating will not be applied to these parts. The phenomenon of non-precipitation is viewed as a problem. The present invention has been made in view of these circumstances, and provides a pretreatment liquid for electroless plating that has excellent wettability and plating adhesion.

(課題を解決するための手段) 本発明の第1の請求項は、シランカップリング剤と、フ
ン素を含むイオン界面活性剤と、グリコールエーテール
類とからなることを特徴とする無電解めっき用前処理液
である。
(Means for Solving the Problems) The first claim of the present invention provides electroless plating characterized by comprising a silane coupling agent, an ionic surfactant containing fluorine, and glycol ethers. This is a pretreatment liquid for use.

また、第2の請求項は、第1の請求項におけるシランカ
ップリング剤が、次の一般式で示される無電解めっき用
前処理液である。
Further, a second claim is a pretreatment liquid for electroless plating in which the silane coupling agent in the first claim is represented by the following general formula.

Xk−3i  ((CHz)L Y) 4−k〔但し、
式中、Kは1〜3の整数を表し、Xはメトキシ基、エト
シキ基などの低級アルコキシ基、アセトキシ基などの低
級アシル基、CH,O(CHz)po  (但し、Pは
1〜1oの整数を表す。)などの低級アルコキシ基、塩
素原子、臭素原子、ヨウ素原子などのハロゲン原子の中
がら選ばれる1種または2種以上の基を表し、Yは水素
原子ビニル基などの低級アルケニル基、アミノ基、−(
CHz)t NH2(但しtは1〜10の整数を示す。
Xk-3i ((CHz)L Y) 4-k [However,
In the formula, K represents an integer of 1 to 3; represents one or more groups selected from lower alkoxy groups such as (represents an integer), halogen atoms such as chlorine atom, bromine atom, and iodine atom, and Y represents a hydrogen atom or a lower alkenyl group such as a vinyl group. , amino group, -(
Hz)t NH2 (where t represents an integer from 1 to 10.

)などのアミノアルキル基、NH(CHI)2 NH2
などのアミノアルキルアミノ基、−0(CHffi)N
 Hzなどのアミノアルコキシ基、ウレイド基の中から
選ばれる1種または2種以上の基(但し、前期Kが1の
場合については、Yがすべて水素原子であるものは除く
。)を表し、lはYがビニル基等の低級アルケニル基の
場合には、0〜7の整数を表し、Yがその他の基の場合
には、1〜7の整数を表す。] 第3の請求項は、第1の請求項又は第2の請求項におけ
るグリコールエーテル類が、次の一般式で示される無電
解めっき用前処理液である。
), aminoalkyl groups such as NH(CHI)2 NH2
aminoalkylamino groups such as -0(CHffi)N
Represents one or more groups selected from aminoalkoxy groups such as Hz and ureido groups (however, in the case where K is 1, excluding those in which all Y are hydrogen atoms), l represents an integer of 0 to 7 when Y is a lower alkenyl group such as a vinyl group, and represents an integer of 1 to 7 when Y is another group. ] The third claim is a pretreatment liquid for electroless plating in which the glycol ether in the first claim or the second claim is represented by the following general formula.

R−0(CIlHz−0) t H (但し、Rはアルキル基、nは1〜4の整数を示す。t
は1〜2の整数を示す。) 本発明の第1の請求項においては、シランカップリング
剤であればどのようなものでも用いることができるが、
特に第2の請求項に示すものが好ましい。これらの中で
も特に好適なものの具体例を限定ではなく単に例示の目
的で示すと、例えばT−アミノプロピルトリメトキシシ
ラン、N−β−(アミノエチル)−γ−アミノプロピル
トリメキシンラン、T−メルカプトプロピルトリメトキ
シシラン、ビニルトリクロロシラン、ビニルトリエトキ
シシラン、ビニルトリメトキシシラン、N−ビス(β−
ヒドロキシエチル)T−アミノプロピルエトキシシラン
、トリエトキシビニルシラン、トリメトキシビニルシラ
ンなどを挙げることができる。尚、これらのシランカッ
プリング剤は、l種単独で用いてもよく、2種以上を組
み合わせて用いることも可能である。
R-0(CIlHz-0) t H (wherein, R is an alkyl group, and n is an integer of 1 to 4.t
represents an integer of 1 to 2. ) In the first claim of the present invention, any silane coupling agent can be used, but
Particularly preferred are those shown in the second claim. Specific examples of particularly preferred ones among these are shown merely for the purpose of illustration and not limitation, such as T-aminopropyltrimethoxysilane, N-β-(aminoethyl)-γ-aminopropyltrimexinlan, T-mercapto. Propyltrimethoxysilane, Vinyltrichlorosilane, Vinyltriethoxysilane, Vinyltrimethoxysilane, N-bis(β-
Examples include T-aminopropylethoxysilane (hydroxyethyl), triethoxyvinylsilane, and trimethoxyvinylsilane. Incidentally, these silane coupling agents may be used alone or in combination of two or more.

また、第1の請求項におけるフッ素を含む界面活性剤と
しては、テトラフルオロエチレンの重合によって得られ
るベルフルオルアルケニル基を有するフッ素を含む界面
活性剤、ヘキサフルオルプロペンの共電によって得られ
るベルフルオルアルケニル基を有するフッ素を含む界面
活性剤、電解フッ素化による直鎖ベルフルオルカルボン
酸フン化物から誘導されるもの、テロメリゼーションに
より得られるベルフルオルヨウ化物から誘導されるベル
フルオルアルキルエチルアルコール誘導体が例示される
。尚、これらの含フツ素界面活性剤は、1種単独で用い
てもよく2種以上を組み合わせて用いることも可能であ
る。
Further, the fluorine-containing surfactant in the first claim includes a fluorine-containing surfactant having a berfluoroalkenyl group obtained by polymerization of tetrafluoroethylene, and a fluorine-containing surfactant obtained by co-electrolysis of hexafluoropropene. Fluorine-containing surfactants with fluoroalkenyl groups, those derived from linear perfluorocarboxylic acid fluorides by electrolytic fluorination, perfluoroalkyl ethyl alcohols derived from perfluoro iodides obtained by telomerization. Derivatives are exemplified. Incidentally, these fluorine-containing surfactants may be used alone or in combination of two or more.

第3の請求項におけるグリコールエーテル類は、その一
般弐が、 RO(CIIHzllo) L H (但し、Rはアルキル基、nは1〜4の整数を示す。(
は1〜2の整数を示す。) であり、具体的には、例えばエチレングリコールモノメ
チルエーテル、ジエチレングリコールモノメチルエーテ
ル、トリエチレングリコールモノメチルエーテル、ポリ
エチレングリコールモノメチルエーテル、ジエチレング
リコールモノブチルエーテル、エチレングリコールモノ
フェニルエーテル、エチレングリコールモノメチルエー
テルアセテート、ジエチレングリコールジメチルエーテ
ル、ジエチレンオキサイド等または、これらの2種以上
の混合物等を挙げることができ、中でもジエチレングリ
コールジメチルエーテルまたは、この混合物が好ましい
The glycol ethers in the third claim are as follows: RO(CIIHzllo) L H (wherein R is an alkyl group and n is an integer of 1 to 4.
represents an integer of 1 to 2. ), specifically, for example, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, polyethylene glycol monomethyl ether, diethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monomethyl ether acetate, diethylene glycol dimethyl ether, diethylene Examples include oxides, mixtures of two or more thereof, and diethylene glycol dimethyl ether and mixtures thereof are preferred.

本発明の無電解めっき用前処理液は、前記シランカップ
リング剤(〔A〕酸成分と前記含フ・ノ素界面活性剤(
〔B]酸成分と前記グリコールエーテル11(C)成分
)とを水溶液とすることによって得ることが出来る。こ
の前処理液中の前記〔八]、CB)、〔C〕、成分の?
農度は、通常次の範囲に設定すれば良い。すなわち、(
A)成分の温度を好ましくは、0.1〜10g/ lと
し、かつ(B]酸成分濃度を好ましくは、0.1〜50
g/ l、かつ〔C〕酸成分濃度を好ましくは、60〜
1,000m1/lとする。ここで、上記各成分の濃度
は、各成分について2種以上のものを用いる場合には、
その合計量から計算される値とする。上記各成分の濃度
が前記の範囲にないと、無電解めっきの前処理として使
用した際に、基板の水ぬれ性が十分でなかったりブロー
ホールが発生したり、スルーホール内に気泡が残存する
ことがあり、その結果リング状のめっきボイドが発生す
る場合がある。
The pretreatment liquid for electroless plating of the present invention comprises the silane coupling agent ([A] acid component and the nitrogen-containing surfactant ([A]).
[B] It can be obtained by forming an aqueous solution of the acid component and the glycol ether 11 (component C). What about the components [8], CB), and [C] in this pretreatment solution?
The agricultural rate should normally be set within the following range. That is, (
A) The temperature of the component is preferably 0.1 to 10 g/l, and the concentration of the acid component (B) is preferably 0.1 to 50 g/l.
g/l, and the [C] acid component concentration is preferably 60~
It is assumed to be 1,000m1/l. Here, when using two or more types of each component, the concentration of each component is as follows:
The value shall be calculated from the total amount. If the concentration of each of the above components is not within the above range, when used as a pretreatment for electroless plating, the water wettability of the substrate may be insufficient, blowholes may occur, or air bubbles may remain in the through holes. As a result, ring-shaped plating voids may occur.

本発明の前処理液を使用するにあたっては、通常例えば
次のように行えば良い。すなわち、例えば基材として基
板を用いる場合には、該基板に必要に応じて穴明けを行
った後に、さらに必要に応じて常法のアルカリ脱脂等に
よる脱脂処理を施した後該基板を本発明の前処理液によ
って処理する。
When using the pretreatment liquid of the present invention, the following procedure may generally be used. That is, when a substrate is used as a base material, for example, after drilling holes in the substrate as necessary, and further performing a degreasing treatment such as alkaline degreasing using a conventional method as necessary, the substrate can be processed according to the present invention. Treat with pre-treatment liquid.

この前処理は、単に基板を前処理液に浸漬するだけで十
分である。この前処理液を使用する際の処理温度は、1
0〜40℃とし処理時間は通常1〜10分程度とすれば
良い。このようにして処理された基板は、簡単な水洗い
を行った後、ソフトエソチング工程、酸洗工程、ブリデ
イツプ処理増感工程(パラジウム等のめっき開始剤の付
与)および密着促進剤工程等の一般の前処理工程を経て
、無電解銅めっき工程に移すことができる。プリント配
線板の製造にあたっては上記の無電解めっきを行った基
板に、さらに、無電解めっき工程はんだレジスト工程、
はんだめっき工程、レジスト剥離工程、エノチング工程
等の処理を施して、製品を得ることができる。
For this pretreatment, simply immersing the substrate in a pretreatment liquid is sufficient. The treatment temperature when using this pretreatment liquid is 1
The temperature is 0 to 40°C and the treatment time is usually about 1 to 10 minutes. After a simple water wash, the substrate treated in this way is subjected to general processes such as a soft ethoching process, an pickling process, a Bridip treatment sensitization process (applying a plating initiator such as palladium), and an adhesion promoter process. After the pretreatment process, it can be transferred to the electroless copper plating process. In manufacturing printed wiring boards, the above-mentioned electroless plated substrate is further subjected to electroless plating process, solder resist process,
A product can be obtained by performing treatments such as a solder plating process, a resist peeling process, and an etching process.

(作用) 本発明の前処理液を用いると、基板等の基材への水ぬれ
性を著しく向上させるとともに、ブローホールの発生や
スルーホール内の気泡の残存が防止でき、その結果、無
電解めっきの析出性、均一性を著しく向上させることが
でき、したがって、優れたプリント配線板等の製品を安
定かつ効率よく製造できる。これらの著しい改善効果は
、本発明の前処理液が、前記の如く特定の成分組成を有
していることにより生じるものであるが、各成分もしく
は、その組成液としての作用機構については、現段階で
は不明な点が多く、明確に述べることはできない。しか
しながら、その作用機構の一部に関する推察を述べるな
らば次のいくつかの点などを挙げることができる。
(Function) When the pretreatment liquid of the present invention is used, it is possible to significantly improve the water wettability of base materials such as substrates, and also to prevent the generation of blowholes and the remaining of air bubbles in through holes. The deposition properties and uniformity of plating can be significantly improved, and therefore products such as excellent printed wiring boards can be manufactured stably and efficiently. These remarkable improvement effects are caused by the pretreatment liquid of the present invention having a specific component composition as described above, but the mechanism of action of each component or its composition liquid is currently unknown. At this stage, there are many unknown points and it is not possible to state clearly. However, if we were to speculate about a part of its mechanism of action, we can cite the following points.

本処理液中のシランカップリング剤は、積層板の基材の
表面に単分子膜を形成し、その外側の未4Mが親水性も
しくは、錯化剤としてしの性質を有しているので、前記
と同様にめっき開始剤が吸着し易くなる作用をおよぼす
ものと考えることができる。
The silane coupling agent in this treatment liquid forms a monomolecular film on the surface of the base material of the laminate, and the non-4M on the outside has hydrophilic properties or properties as a complexing agent. It can be thought that this has the effect of making it easier for the plating initiator to be adsorbed, similar to the above.

さらに、本前処理液中の含フツ素界面活性剤は、親水性
と疎水性との調整作用等によって水ぬれ性を向上する作
用をおよぼすものと推察することができ、かつ、表面張
力を下げることができる。さらに、本前処理液中のグリ
コールエーテル類は、表面張力を低下せしめる作用を示
すとともに浸透性を有しており、基板等の基材のスルー
ホール内の脱泡性の向上などに有効に作用しているもの
と考えられる。そして、これらの各成分の協同作用によ
って、前記した優れた効果が生じるものと考えられる。
Furthermore, it can be inferred that the fluorine-containing surfactant in this pretreatment liquid has the effect of improving water wettability by adjusting hydrophilicity and hydrophobicity, and also reduces surface tension. be able to. In addition, the glycol ethers in this pretreatment liquid have the effect of lowering surface tension and have permeability, and are effective in improving defoaming properties in through-holes of substrates and other base materials. It is thought that this is the case. It is believed that the above-mentioned excellent effects are produced by the cooperative action of these components.

実施例1 規格の異なる3種類のNHMA規格によるFR−4、C
EM−1およびOEM−3の両面銅張積層板に0.3f
iのドリルにて穴明けし、パフ研磨、ホーニング処理し
たものを供試料とした。この処理基板を、以下の組成を
含む水溶液に温度60℃の条件下で4分間前処理を行っ
た。
Example 1 FR-4, C according to three different NHMA standards
0.3f on double-sided copper clad laminates of EM-1 and OEM-3
A hole was drilled using a drill (i), and the sample was subjected to puff polishing and honing. This treated substrate was pretreated with an aqueous solution containing the following composition at a temperature of 60° C. for 4 minutes.

〔組成〕〔composition〕

T−アミノプロピルトリエトキシシランA−1100(
日本ユニカー社、商品名);28/l ユニセーフHF A −5840(日本油脂株式会社、
商品名);2g/l’ ジエチレングリコールジメチルエーテル(試薬−級) 
 ;400 ml / 1その後、水洗後、 ソフトエツチングとして200g/ 1の過硫酸アンモ
ニウムにr+ ?Nし、酸洗いとしてlO%HzSOa
に浸漬し、ブリデイツプとして270g/ 1のPD−
201(日立化成工業株式会社、商品名)に浸漬し、増
感剤であるMS−20B(日立化成工業株式会社、商品
名)に浸漬し、密着促進剤であるADP−202(日立
化成工業株式会社、商品名)に浸漬して無電解めっきの
前処理を行い無電解銅めっき液であるC U S T−
201(日立化成工業株式会社、商品名)に20分間浸
漬してめっきを施し、その後、ピロリン酸銅めっきを3
 A/d+s”で64分間行い、その後、回路成形後、
ブローホールの発生テストを行った。ブローホールテス
トはMIL規格P−55110に準拠し、まず湿度95
%、温度65℃の場所に8時間放置し、これを8回繰り
返して十分吸湿させたのち、260℃に加熱された溶融
半田浴に浸漬したときのブローホールの数を測定した。
T-aminopropyltriethoxysilane A-1100 (
Nippon Unicar Co., Ltd., trade name); 28/l Unisafe HF A-5840 (Nippon Oil & Fats Co., Ltd.,
(Product name); 2g/l' diethylene glycol dimethyl ether (reagent grade)
400 ml/1 Then, after washing with water, add r+ to 200 g/1 ammonium persulfate for soft etching. N and pickling as lO%HzSOa
270g/1 PD-
201 (Hitachi Chemical Co., Ltd., trade name), immersed in the sensitizer MS-20B (Hitachi Chemical Co., Ltd., trade name), and adhesion promoter ADP-202 (Hitachi Chemical Co., Ltd.). C.U.S.T., an electroless copper plating solution, is pretreated for electroless plating by immersing it in a solution (trade name).
201 (Hitachi Chemical Co., Ltd., trade name) for 20 minutes, then copper pyrophosphate plating was applied for 30 minutes.
A/d+s'' for 64 minutes, then after circuit forming,
A blowhole generation test was conducted. The blowhole test is based on MIL standard P-55110, and first the humidity is 95%.
%, and left at a temperature of 65° C. for 8 hours, and after repeating this process 8 times to fully absorb moisture, the number of blowholes was measured when immersed in a molten solder bath heated to 260° C.

尚、このブローホールとは、スルーホールプリント配線
板に対してIC等の部品を実装するときに起こる溶融半
田の熱に起因する欠陥で、スルーホール部分の銅めっき
が内部のガラス繊維の露出等により均一でないときに起
こり、内部の気体がめっき膜を局部的に破る現象をいう
Furthermore, this blowhole is a defect caused by the heat of molten solder that occurs when components such as ICs are mounted on a through-hole printed wiring board, and the copper plating on the through-hole area may cause the glass fiber inside to be exposed. This is a phenomenon that occurs when the plating film is not uniform due to the plating film, and the internal gas locally ruptures the plating film.

実施例2 実施例1と同じ穴明き基板を以下の組成を含む前処理液
で温度60℃の条件下で4分間前処理を行い、後の工程
は実施例1と同様に行った。
Example 2 The same perforated substrate as in Example 1 was pretreated with a pretreatment liquid containing the following composition at a temperature of 60° C. for 4 minutes, and the subsequent steps were performed in the same manner as in Example 1.

(組成) T−7ミノプロビルトリエトキシシランA−1100(
日本ユニカー社、商品名);0.1g/l ユニセーフHF A −5840(日本油脂株式会社、
商品名);0.1g# ジエチレングリコールジメチルエーテル(試薬−級) 
 ;  60mj!#!実施例3 実施例1と同じ穴明き基板に以下の組成を含む前処理液
で温度60℃の条件下で4分間前処理を行い、後の工程
は実施例1と同様に行った。
(Composition) T-7 Minoprobyltriethoxysilane A-1100 (
Nippon Unicar Co., Ltd., trade name); 0.1 g/l Unisafe HF A-5840 (Nippon Oil & Fats Co., Ltd.,
Product name); 0.1g# Diethylene glycol dimethyl ether (reagent grade)
; 60mj! #! Example 3 The same perforated substrate as in Example 1 was pretreated with a pretreatment liquid containing the following composition at a temperature of 60° C. for 4 minutes, and the subsequent steps were performed in the same manner as in Example 1.

〔組成〕 β−アミノエチル−T−アミノプロピルトリメトキシシ
ラン、  A−1120(日本ユニカ−社、商品名);
5g/l フタージュント25H,?、オス社、商品名);5g/
l エチレングリコールモノメチルエーテル(試薬−級) 
 ;   500m/  /e比較例1 実施例1と同じ穴明き基板に以下の組成を含む前処理液
で温度60℃の条件下で4分間前処理を行い、後の工程
は実施例1と同様に行った。
[Composition] β-aminoethyl-T-aminopropyltrimethoxysilane, A-1120 (Nippon Unica Co., Ltd., trade name);
5g/l Futerjunto 25H,? , Osusha, product name); 5g/
l Ethylene glycol monomethyl ether (reagent grade)
; 500m/ /e Comparative Example 1 The same perforated substrate as in Example 1 was pretreated with a pretreatment liquid containing the following composition at a temperature of 60°C for 4 minutes, and the subsequent steps were the same as in Example 1. I went to

〔組成〕〔composition〕

(一般にぬれ性が良く、浸透性を有する)ポリオキシエ
チレンオクチルフェニルエーテルであるノニオンH3−
210(日本油脂株式会社、商品名);2g/l’ (増悪工程において、Pd等を吸着せしめる第4級アン
モニウム界面活性剤である)塩化ベヘニルトリメチルア
ンモニウムであるカチナールDC−80(東邦化学株式
会社、商品名);2g/ff 比較例2 実施例1と同じ穴明き)S仮を、実施例1の成分組み合
わせよりA−1100を取り除いたもので温度60℃の
条件−トで4分間前処理をを行い、後の工程は実施例1
と同様に行った。
Nonion H3- which is polyoxyethylene octylphenyl ether (generally has good wettability and permeability)
210 (Nippon Oil & Fats Co., Ltd., trade name); 2 g/l' (a quaternary ammonium surfactant that adsorbs Pd, etc. in the exacerbation process) Catinal DC-80 (Toho Chemical Co., Ltd.), which is behenyltrimethylammonium chloride , trade name); 2 g/ff Comparative Example 2 The same perforated S as in Example 1 was prepared by removing A-1100 from the component combination of Example 1, and heated at a temperature of 60°C for 4 minutes. The subsequent steps are as per Example 1.
I did the same thing.

実施例1〜3と比較例1〜2の結果を第1表に示すよう
に実施例1〜3の前処理液は、比較例1〜2に比べて明
らかに優れていた。
As the results of Examples 1-3 and Comparative Examples 1-2 are shown in Table 1, the pretreatment liquids of Examples 1-3 were clearly superior to Comparative Examples 1-2.

第1表 注1)スルーホール個数300に対する個数(発明の効
果) 以上に説明したように、本発明によって、プリント配線
板用基板等の基材への水ぬれ性に優れ、穴明き基板等の
ブローホールの発生が少なく、スルーホールの内の脱泡
性に優れ、無電解めっきの析出性、均一性を著しく向上
させることができ、めっきボイドの発生を防止すること
ができる無電解めっき用前処理液を従供することができ
る。
Table 1 Note 1) Number of through holes relative to 300 (effects of the invention) As explained above, the present invention has excellent water wettability to substrates such as printed wiring board substrates, and provides perforated substrates etc. For electroless plating, which produces fewer blowholes, has excellent degassing properties in through holes, can significantly improve the deposition performance and uniformity of electroless plating, and can prevent the occurrence of plating voids. A pretreatment liquid can be provided.

Claims (1)

【特許請求の範囲】 1、シランカップリング剤と、フッ素を含むイオン界面
活性剤と、グリコールエーテール類とからなることを特
徴とする無電解めっき用前処理液。 2、シランカップリング剤が、次の一般式で示される請
求項1に記載の無電解めっき用前処理液。 Xk−Si〔(CH_2)_L−Y〕_4_−_k〔但
し、式中、Kは1〜3の整数を表し、Xはメトキシ基、
エトシキ基などの低級アルコキシ基、アセトキシ基など
の低級アシル基、CH_3O(CH_2)_PO−(但
し、Pは1〜10の整数を表す。)などの低級アルコキ
シ基、塩素原子、臭素原子、ヨウ素原子などのハロゲン
原子の中から選ばれる1種または2種以上の基を表し、
Yは水素原子ビニル基などの低級アルケニル基、アミノ
基、−(CH_2)_tNH_2(但しtは1〜10の
整数を示す。 )などのアミノアルキル基、NH(CH_2)_2NH
_2などのアミノアルキルアミノ基、−O(CH_2)
NH_2などのアミノアルコキシ基、ウレイド基の中か
ら選ばれる1種または2種以上の基(但し、前期Kが1
の場合については、Yがすべて水素原子であるものは除
く。)を表し、lはYがビニル基等の低級アルケニル基
の場合には、0〜7の整数を表し、Yがその他の基の場
合Kは、1〜7の整数を表す。〕 3、グリコールエーテル類が、次の一般式で示される請
求項1又は請求項2に記載の無電解めっき用前処理液。 R−O〔C_nH_2_nO〕_tH (但し、Rはアルキル基、nは1〜4の整数を示す。t
は1〜2の整数を示す。)
[Scope of Claims] 1. A pretreatment liquid for electroless plating characterized by comprising a silane coupling agent, an ionic surfactant containing fluorine, and glycol ethers. 2. The pretreatment liquid for electroless plating according to claim 1, wherein the silane coupling agent is represented by the following general formula. Xk-Si [(CH_2)_L-Y]_4_-_k [wherein, K represents an integer of 1 to 3, X is a methoxy group,
Lower alkoxy groups such as ethoxy group, lower acyl groups such as acetoxy group, lower alkoxy groups such as CH_3O(CH_2)_PO- (where P represents an integer from 1 to 10), chlorine atom, bromine atom, iodine atom represents one or more groups selected from halogen atoms such as,
Y is a hydrogen atom, a lower alkenyl group such as a vinyl group, an amino group, an aminoalkyl group such as -(CH_2)_tNH_2 (where t is an integer from 1 to 10), NH(CH_2)_2NH
Aminoalkylamino group such as _2, -O(CH_2)
One or more groups selected from aminoalkoxy groups such as NH_2 and ureido groups (however, if the former K is 1)
Cases in which all Y are hydrogen atoms are excluded. ), l represents an integer of 0 to 7 when Y is a lower alkenyl group such as a vinyl group, and K represents an integer of 1 to 7 when Y is another group. 3. The pretreatment liquid for electroless plating according to claim 1 or 2, wherein the glycol ether is represented by the following general formula. R-O[C_nH_2_nO]_tH (where, R is an alkyl group, and n is an integer of 1 to 4.t
represents an integer of 1 to 2. )
JP4298288A 1988-02-25 1988-02-25 Pretreating solution for electroless plating Pending JPH01219169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4298288A JPH01219169A (en) 1988-02-25 1988-02-25 Pretreating solution for electroless plating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4298288A JPH01219169A (en) 1988-02-25 1988-02-25 Pretreating solution for electroless plating

Publications (1)

Publication Number Publication Date
JPH01219169A true JPH01219169A (en) 1989-09-01

Family

ID=12651243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4298288A Pending JPH01219169A (en) 1988-02-25 1988-02-25 Pretreating solution for electroless plating

Country Status (1)

Country Link
JP (1) JPH01219169A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012891A (en) * 2004-06-22 2006-01-12 Fujikura Kasei Co Ltd Method of manufacturing electromagnetic shielding film
JP2012504705A (en) * 2008-10-02 2012-02-23 マクダーミッド インコーポレーテッド Method to improve surface solderability
WO2016129373A1 (en) * 2015-02-12 2016-08-18 上村工業株式会社 Pretreatment agent for electroless plating, and pretreatment method and manufacturing method for printed wiring board in which pretreatment agent for electroless plating is used
JP2018080369A (en) * 2016-11-17 2018-05-24 上村工業株式会社 Method for manufacturing printed circuit board
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006012891A (en) * 2004-06-22 2006-01-12 Fujikura Kasei Co Ltd Method of manufacturing electromagnetic shielding film
JP2012504705A (en) * 2008-10-02 2012-02-23 マクダーミッド インコーポレーテッド Method to improve surface solderability
US10138558B2 (en) 2015-02-12 2018-11-27 C. Uyemura & Co., Ltd. Pretreatment agent for electroless plating, and pretreatment and production of printed wiring board using same
JP2016148076A (en) * 2015-02-12 2016-08-18 上村工業株式会社 Electroless plating pretreatment agent, method for pretreating printed circuit board using the same and method for manufacturing the printed circuit board
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KR20170117073A (en) * 2015-02-12 2017-10-20 우에무라 고교 가부시키가이샤 Pretreatment agent for electroless plating, and pretreatment method and manufacturing method for printed wiring board in which pretreatment agent for electroless plating is used
EP3257967A4 (en) * 2015-02-12 2018-09-05 C. Uyemura & Co., Ltd. Pretreatment agent for electroless plating, and pretreatment method and manufacturing method for printed wiring board in which pretreatment agent for electroless plating is used
WO2016129373A1 (en) * 2015-02-12 2016-08-18 上村工業株式会社 Pretreatment agent for electroless plating, and pretreatment method and manufacturing method for printed wiring board in which pretreatment agent for electroless plating is used
JP2018080369A (en) * 2016-11-17 2018-05-24 上村工業株式会社 Method for manufacturing printed circuit board
WO2018092410A1 (en) * 2016-11-17 2018-05-24 上村工業株式会社 Method for producing printed wiring board
EP3543372A4 (en) * 2016-11-17 2020-07-08 C. Uyemura & Co., Ltd. Method for producing printed wiring board
TWI732045B (en) * 2016-11-17 2021-07-01 日商上村工業股份有限公司 Manufacturing method of printed wiring board
US11421325B2 (en) 2019-05-28 2022-08-23 C. Uyemura & Co., Ltd. Method for producing a printed wiring board

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