JP2008274057A - Primer for japanese lacquer coating - Google Patents

Primer for japanese lacquer coating Download PDF

Info

Publication number
JP2008274057A
JP2008274057A JP2007117820A JP2007117820A JP2008274057A JP 2008274057 A JP2008274057 A JP 2008274057A JP 2007117820 A JP2007117820 A JP 2007117820A JP 2007117820 A JP2007117820 A JP 2007117820A JP 2008274057 A JP2008274057 A JP 2008274057A
Authority
JP
Japan
Prior art keywords
lacquer
primer
chitosan
coating
lacquered
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
JP2007117820A
Other languages
Japanese (ja)
Inventor
Tomo Kakiya
朋 柿谷
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.)
Sumitomo Forestry Co Ltd
Original Assignee
Sumitomo Forestry 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 Sumitomo Forestry Co Ltd filed Critical Sumitomo Forestry Co Ltd
Priority to JP2007117820A priority Critical patent/JP2008274057A/en
Publication of JP2008274057A publication Critical patent/JP2008274057A/en
Pending legal-status Critical Current

Links

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a primer for Japanese lacquer coating capable of giving a Japanese lacquer-coated article little in color irregularity and excellent in appearance using a japan, a natural coating material; to provide the Japanese lacquer-coated article little in color irregularity and excellent in appearance; and to provide its efficient manufacturing method. <P>SOLUTION: The primer for the Japanese lacquer coating contains ≥1.0 wt.% of chitosan and is composed of a solution of chitosan whose weight average mol.wt. is <400,000. The Japanese lacquer-coated article is obtained by forming an undercoat layer comprising chitosan on an article to be coated that consists of wood and forming thereon a Japanese lacquer coating film. The manufacturing method of the Japanese lacquer-coated article comprises coating the article subject to the coating with the primer and then applying a japan diluted with an organic solvent. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、漆塗装の下塗剤、漆塗装物及びその製造方法に関する。   The present invention relates to a lacquered primer, a lacquered product, and a method for producing the same.

木造住宅等の木製建造物における、柱、梁、床材、羽目板、手摺り、カウンター、ドア等や、家具等の多くは、木部の保護や美観の向上を目的に塗装されることが多い。今日、使用されている塗料の殆どは、優れた性能や取り扱いの簡便さのために、石油系の合成樹脂を主成分とした合成塗料である。このような合成樹脂の代表的なものとしては、ラッカー樹脂、ポリウレタン樹脂、アクリル樹脂、フツ素樹脂、ポリエステル樹脂、シリコーン樹脂、アクリルシリコーン樹脂等があるが、これらは資源の枯渇問題や地球温暖化ガスの放出問題等の環境問題を抱えている。   In wooden buildings such as wooden houses, pillars, beams, flooring, paneling, handrails, counters, doors, furniture, etc. are often painted to protect the wood and improve the beauty. . Most of the paints used today are synthetic paints based on petroleum-based synthetic resins because of their excellent performance and ease of handling. Typical examples of such synthetic resins include lacquer resin, polyurethane resin, acrylic resin, fluorine resin, polyester resin, silicone resin, acrylic silicone resin, etc., but these are problems of resource depletion and global warming. We have environmental problems such as gas emission problems.

近年、環境保護意識や身近な物質に対する安全意識の高まりから、自然素材を積極的に活用しようとする機運が高まっている。自然素材を活用した例としては、トウモロコシ澱粉を主原料にしたポリ乳酸塗料の開発等が挙げられる。   In recent years, there has been an increase in the momentum for active use of natural materials due to the growing awareness of environmental protection and safety of familiar substances. An example of utilizing natural materials is the development of a polylactic acid paint using corn starch as the main raw material.

また、日本の伝統的な自然塗料の一つとして漆がある。漆塗膜はふっくらとした質感や深みのある艶を呈し、また、耐水性、耐熱性、耐摩耗性に優れており、古くから主に工芸品の塗装の用途に用いられてきた。また、近年の技術としては、特許文献1に、天然産生漆又は精製漆を混練して得られる漆系塗料であって、油中水滴型エマルションの粒径が10〜80nmであるものが、高い光沢の塗膜を与え得るものとして提案されている。
しかし、漆を塗装する対象の木材はその殆どが広葉樹材であり、また、漆塗装品の殆どは漆器などに代表される伝統工芸品である。即ち、柱、梁、床材、羽目板、手摺り、カウンター、ドア等の建築部材、特にスギやヒノキ等の針葉樹材に漆を塗装することは殆どなかった。
Lacquer is one of the traditional Japanese natural paints. The lacquer coating film has a plump texture and deep luster, and is excellent in water resistance, heat resistance, and abrasion resistance, and has been used mainly for painting crafts since ancient times. Moreover, as a recent technique, Patent Document 1 is a lacquer-based paint obtained by kneading naturally produced lacquer or refined lacquer, and the water-in-oil emulsion having a particle size of 10 to 80 nm is high. It has been proposed as a glossy coating.
However, most of the target lacquered wood is hardwood, and most of the lacquered products are traditional crafts such as lacquerware. That is, there was almost no lacquer coating on building members such as columns, beams, flooring, paneling, handrails, counters, doors, especially coniferous materials such as cedar and cypress.

特開2007−9023号公報JP 2007-9023 A

建築部材に漆が用いられない理由は、建築部材の多くが工芸品に比べて広い塗装面積を有するため、塗装むらが目立ち易いこと、特に針葉樹材の場合は、塗料の吸い込み量が多いことため、塗装むらが色むらとして、より目立ち易くなること等にあると考えられる。
漆の吸い込み量が多いと、塗装面が黒色を呈して木目が見え難くなったり、漆の使用量が多くなるため塗装コストが増大したりする等の問題もある。漆の吸い込み量が多いと、更に、被塗装物の表面に充分な厚みのある漆塗膜が形成されにくく、漆特有の艶も得られにくくなる。
The reason that lacquer is not used for building materials is that many of the building materials have a larger coating area than crafts, so that uneven painting is more noticeable, especially in the case of softwood, because the amount of paint sucked in is large. The coating unevenness is considered to be more noticeable as the color unevenness.
If the amount of lacquer sucked in is large, the painted surface will be black and it will be difficult to see the wood grain, or the amount of lacquer used will increase and the coating cost will increase. When the amount of lacquer sucked is large, a lacquer coating film having a sufficient thickness is difficult to be formed on the surface of the object to be coated, and it is difficult to obtain a gloss unique to lacquer.

一般に、塗装むらを軽減したり、塗料の吸い込みを抑制する目的で、下地塗装にプライマーと呼ばれる類の塗装を施すことが多い。しかしながら、従来のプライマーは合成樹脂であることが多く、合成樹脂からなるプライマーを用いることは、自然素材である漆により塗装し、環境に与える負荷を軽減するという観点から好ましくない。   In general, a primer called a primer is often applied to the base coating in order to reduce coating unevenness or suppress the suction of the coating. However, the conventional primer is often a synthetic resin, and it is not preferable to use a primer made of a synthetic resin from the viewpoint of coating with natural lacquer and reducing the burden on the environment.

従って、本発明の目的は、色むらが少なく、外観に優れた漆塗装物を得ることのできる、漆塗装の下塗剤を提供することにある。
また、本発明の目的は、色むらが少なく、外観に優れた漆塗装物、及びその製造方法を提供することにある。
Accordingly, an object of the present invention is to provide a lacquered undercoat agent that can obtain a lacquered product with little color unevenness and excellent appearance.
Another object of the present invention is to provide a lacquered product with little color unevenness and excellent appearance, and a method for producing the same.

本発明者らは、上記問題を解決すべく鋭意検討したところ、被塗装物に下塗剤(プライマー)として、自然素材であるキトサン(水溶液状)を塗装することにより、漆を用いて塗装する際の色むらを少なくできること、更には、市販されている一般的なキトサンの水溶液(キトサン濃度1重量%未満)に対して、濃度を1.0重量%以上にすることにより、そのような効果を顕著に向上させ得ることを知見した。
本発明は、このような知見に基づき完成されたものである。
The inventors of the present invention have intensively studied to solve the above-mentioned problems. As a primer, a natural material, chitosan (in the form of an aqueous solution) is applied to the object to be coated. This effect can be reduced by increasing the concentration to 1.0% by weight or more with respect to a commercially available aqueous solution of chitosan (chitosan concentration of less than 1% by weight). It was found that it can be remarkably improved.
The present invention has been completed based on such findings.

即ち、本発明は、キトサンを1.0重量%以上含み、該キトサンの重量平均分子量が400,000未満であるキトサン溶液からなることを特徴とする漆塗装の下塗剤を提供することにより前記目的を達成したものである。
また、本発明は、木材からなる被塗装物にキトサンを含む下地層を形成し、該下地層上に漆塗膜を形成してあることを特徴とする漆塗装物を提供するものである。
更に、本発明は、前記漆塗装物の製造方法であって、前記被塗装物に、前記漆塗装の下塗剤を塗布した後、有機溶剤で希釈した漆を塗布することを特徴とする漆塗装物の製造方法を提供するものである。
That is, the present invention provides the above-mentioned object by providing a lacquer-coated primer comprising a chitosan solution containing chitosan in an amount of 1.0% by weight or more and having a weight average molecular weight of less than 400,000. Is achieved.
In addition, the present invention provides a lacquered product characterized in that a base layer containing chitosan is formed on an object to be coated made of wood, and a lacquer coating film is formed on the base layer.
Furthermore, this invention is a manufacturing method of the said lacquered article, Comprising: After apply | coating the said lacquered primer to the said to-be-coated object, the lacquer coating diluted with the organic solvent is apply | coated. The manufacturing method of a thing is provided.

本発明の漆塗装の下塗剤によれば、色むらが少なく、外観に優れた漆塗装物を得ることができる。
本発明の漆塗装物は、色むらが少なく、外観に優れている。
本発明の漆塗装物の製造方法によれば、色むらが少なく、外観に優れた漆塗装物を効率よく製造することができる。
According to the lacquered primer of the present invention, it is possible to obtain a lacquered product having little color unevenness and excellent appearance.
The lacquered product of the present invention has little color unevenness and excellent appearance.
According to the method for producing a lacquered product of the present invention, it is possible to efficiently produce a lacquered product having little color unevenness and excellent appearance.

以下、本発明をその好ましい実施形態に基づいて詳細に説明する。
本発明の漆塗装の下塗剤は、キトサンを1.0重量%以上含み、該キトサンの重量平均分子量が400,000未満である低分子量キトサン溶液からなる。
Hereinafter, the present invention will be described in detail based on preferred embodiments thereof.
The primer for lacquer coating of the present invention comprises a low molecular weight chitosan solution containing 1.0% by weight or more of chitosan and having a weight average molecular weight of less than 400,000.

前記低分子量キトサン溶液に含まれるキトサンは、重量平均分子量が400,000未満である。
キトサンは、一般に、かにやエビ等の甲殻類の殻に含まれる天然物高分子であるキチンを脱アセチル化して得られる、β-1,4-ポリ-D-グルコサミンを主成分とする多糖類であり、乳酸、クエン酸、酢酸等の弱酸の水溶液に溶解する。尚、キトサンは、天然には一部の菌類の細胞壁を構成する成分として存在している。
The chitosan contained in the low molecular weight chitosan solution has a weight average molecular weight of less than 400,000.
Chitosan is generally a polybasic compound mainly composed of β-1,4-poly-D-glucosamine obtained by deacetylation of chitin, a natural product polymer contained in crustacean shells such as crab and shrimp. It is a saccharide and dissolves in an aqueous solution of a weak acid such as lactic acid, citric acid or acetic acid. Chitosan naturally exists as a component constituting the cell wall of some fungi.

しかし、一般に市販されているキトサンは、重量平均分子量が400,000〜500,000と非常に大きく、濃度1重量%の水溶液としても粘度が1,000mPa・sと過大となり、それ以上の濃度に調整することは困難である。
これに対して、本発明においては、重量平均分子量が400,000未満、より好ましくは50,000〜300,000、更に好ましくは、100,000〜200,000となるように低分子化したキトサンを用いており、このような低分子量のキトサンは、キトサン溶液中のキトサンの濃度が1重量%以上となるように調製することが容易であり、更にはそれより高濃度に調製することも可能となる。
そして、そのように低分子量のキトサンを高濃度で含むキトサン溶液を下塗剤(プライマー)として用いることで、漆塗装の際の色むらを低減することができる。
However, commercially available chitosan has a very large weight average molecular weight of 400,000 to 500,000, and the viscosity is too high at 1,000 mPa · s even in an aqueous solution having a concentration of 1% by weight. It is difficult to adjust.
On the other hand, in the present invention, chitosan reduced in molecular weight so that the weight average molecular weight is less than 400,000, more preferably 50,000 to 300,000, still more preferably 100,000 to 200,000. Such a low molecular weight chitosan can be easily prepared so that the concentration of chitosan in the chitosan solution is 1% by weight or more, and can be prepared at a higher concentration than that. It becomes.
And the color unevenness in the case of lacquer coating can be reduced by using the chitosan solution which contains the low molecular weight chitosan by the high concentration in that way as a primer (primer).

前記低分子量キトサン溶液は、乳酸、クエン酸、酢酸等の弱酸を含む水溶液であることが好ましい。また、本発明の効果を損なわない範囲で、pH調製剤、色剤、顔料、紫外線防止剤等の添加剤を含んでいても良い。
また、低分子量キトサン溶液中のキトサンの濃度は、1重量%以上であることが好ましく、より好ましくは2〜8重量%であり、更に好ましくは4〜6重量%である。また、キトサンは、脱アセチル化度が80%以上であることが好ましい。
The low molecular weight chitosan solution is preferably an aqueous solution containing a weak acid such as lactic acid, citric acid or acetic acid. In addition, an additive such as a pH adjusting agent, a colorant, a pigment, and an ultraviolet ray preventing agent may be included as long as the effects of the present invention are not impaired.
Moreover, it is preferable that the density | concentration of chitosan in a low molecular weight chitosan solution is 1 weight% or more, More preferably, it is 2-8 weight%, More preferably, it is 4-6 weight%. Chitosan preferably has a degree of deacetylation of 80% or more.

本発明において下塗剤を塗布する対象の被塗装物としては、木造住宅等の木造建築物に用いられる木材からなる各種の建築部材や、木製家具を構成する木材等が挙げられるが、これらに制限されるものではない。建築部材としては、例えば、木造住宅における、柱、梁、床材、羽目板、手摺り、カウンター、ドア等が挙げられる。
また、被塗装物が木材である場合、該木材は、広葉樹材であっても良いが、本発明は、特にスギやヒノキ等の針葉樹材の場合に有益である。針葉樹材は、一般に広葉樹材に比べて液の吸い込み量が多いため、広葉樹材に比べて塗布むらや色むらが生じやすく、本発明の下塗剤で処理するか否かによる色むらの差は、広葉樹材に比べて針葉樹材の場合に特に顕著である。針葉樹材に、本発明の下塗剤を塗装することで、一般に、針葉樹材であることの多い建築部材に漆塗装を適用することが容易となる。
尚、広葉樹材、針葉樹材といった木材は、無垢材の他、各種の木質材であっても良い。木質材としては、集成材、合板、単板積層材(LVL)、パーティクルボード、MDF等が挙げられる。
Examples of the object to be coated with the primer in the present invention include various building members made of wood used in wooden buildings such as wooden houses, and wood that constitutes wooden furniture. Is not to be done. Examples of building members include pillars, beams, flooring, paneling, handrails, counters, doors and the like in wooden houses.
Further, when the object to be coated is wood, the wood may be a hardwood material, but the present invention is particularly useful in the case of a softwood material such as cedar or cypress. Softwood materials generally have a large amount of liquid suction compared to hardwood materials, so uneven coating and uneven color are more likely to occur than hardwood materials, and the difference in unevenness of color depending on whether or not the primer is treated according to the present invention, This is particularly true for coniferous wood compared to hardwood. By applying the primer of the present invention to a softwood material, it is generally easy to apply lacquer coating to a building member that is often a softwood material.
The wood such as hardwood and softwood may be solid wood or various wood materials. Examples of the wood material include laminated wood, plywood, single plate laminated material (LVL), particle board, MDF, and the like.

被塗装物に対する下塗剤の塗布方法としては、刷毛塗り、ロールコーター、スプレーコーター、ウエス等、木材の塗装に従来用いられている各種公知の塗布方法を特に制限なく用いることができるが、刷毛塗りが好ましい。下塗剤を塗る回数は、1回でも良いが、複数回塗り重ねても良い。
下塗剤の塗布により被塗装物に下地層が形成される。下地層は、被塗装物の表面に層として完全に区別できる状態に形成されていても良いが、凹凸を有する被塗装物の凹部内に一部又は全部が入り込んだ下地層であっても良い。
また、下塗剤の塗布量は、下地層を有する面1平方メートル当たりのキトサンの乾燥重量が、0.01〜5g/m2であることが好ましく、より好ましくは0.05〜0.5g/m2である。
As a method for applying the primer to the object to be coated, various known coating methods conventionally used for wood coating, such as brush coating, roll coater, spray coater, waste cloth, etc., can be used without particular limitation. Is preferred. The number of times of applying the primer may be once, but may be repeated several times.
An undercoat layer is formed on the object by applying the primer. The underlayer may be formed in a state that can be completely distinguished as a layer on the surface of the object to be coated, or may be an underlayer partially or wholly entered into the concave portion of the object to be coated having irregularities. .
The coating amount of the primer is preferably 0.01 to 5 g / m 2 , more preferably 0.05 to 0.5 g / m 2 in dry weight of chitosan per square meter of the surface having the undercoat layer. 2 .

本発明で用いる漆は、漆科植物から得られる生漆、生漆をクロメ(加熱脱水)処理して得られる精製漆など、漆による塗装に従来用いられているものを特に制限なく用いることができる。生漆は、日本産、中国産、台湾産、インドネシア産、ミャンマー産、ベトナム産などの何れを使用しても良い。漆の塗布方法としては、刷毛塗り、ロールコーター、スプレーコーター、ウエス等、各種公知の塗布方法を特に制限なく用いることができるが、刷毛塗りが好ましい。
また、漆の塗布量(乾燥後の重量)は、0.01〜50g/m2であることが好ましく、より好ましくは0.03〜10g/m2である。
As the lacquer used in the present invention, those conventionally used for coating with lacquer such as raw lacquer obtained from lacquer plants and purified lacquer obtained by chrome (heat dehydration) treatment can be used without particular limitation. The raw lacquer may be any of Japan, China, Taiwan, Indonesia, Myanmar, Vietnam, etc. As a lacquer coating method, various known coating methods such as brush coating, roll coater, spray coater, and waste can be used without particular limitation, but brush coating is preferable.
Also, lacquer coating amount (weight after drying) is preferably 0.01 to 50 g / m 2, more preferably from 0.03~10g / m 2.

漆の塗布は、下塗剤を塗布した後、乾燥させてから行うことが好ましい。また、下塗剤の塗布後、余分な下塗剤をウエス等で拭き取った後に乾燥することも好ましい。下塗剤の乾燥は、常温による自然乾燥、あるいは加熱による強制乾燥でも良い。   The application of lacquer is preferably performed after the primer is applied and then dried. It is also preferable that after applying the primer, the excess primer is wiped off with a waste cloth and dried. The primer may be dried by natural drying at room temperature or forced drying by heating.

漆は、有機溶剤で希釈して用いることが、色むらになりにくいので好ましい。有機溶剤としては、アセトン、テレビン油、樟脳油、ジオキサン、ジメチルスルホキシド、ジメチルホルムアミド、トルエン、リモネン、キシレン等が挙げられるが、好ましくは、テレビン油、樟脳油、リモネン等の天然系溶剤である。
漆と有機溶剤との配合割合は、重量比(前者:後者)で100:10〜100:500であることが好ましい。
漆を塗る回数は、1回でも良いが、複数回塗る重ねることが好ましく、特に有機溶剤に溶解した漆を塗布し、更に漆を塗り重ねることが好ましい。
It is preferable to use lacquer diluted with an organic solvent because it is difficult to cause uneven color. Examples of the organic solvent include acetone, turpentine oil, camphor oil, dioxane, dimethyl sulfoxide, dimethylformamide, toluene, limonene, xylene, and the like, and natural solvents such as turpentine oil, camphor oil, and limonene are preferable.
The blending ratio of lacquer and organic solvent is preferably 100: 10 to 100: 500 in weight ratio (the former: latter).
Although the number of times of applying lacquer may be one, it is preferable to apply lacquer several times, and it is particularly preferable to apply lacquer dissolved in an organic solvent and then apply lacquer again.

以下、本発明を実施例により更に詳細に説明するが、本発明は、かかる実施例によって何ら限定されるものではない。   EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited at all by this Example.

(実施例1)
市販の低分子量キトサン水溶液(大日精化工業株式会社製の「ダイトキサン W−10」,重量平均分子量100,000〜200,000,キトサン濃度10重量%,脱アセチル化度80〜85%)を、そのままあるいはイオン交換水で希釈したものを、下塗剤(プライマー)としてヒノキ材に塗布した。具体的には、キトサン水溶液として、キトサン濃度を1〜10重量%の範囲で1%づつ変化させたもの(サンプル1〜10)と、キトサン濃度を1重量%未満(具体的には0.9重量%)としたもの(サンプル11)とを調製し、そのそれぞれをヒノキ材に塗布した。
そして、そのそれぞれについて、余分な塗布液をウエスで拭き取った後、常温にて自然乾燥させた。
Example 1
A commercially available low molecular weight chitosan aqueous solution ("Daitoxan W-10" manufactured by Dainichi Seika Kogyo Co., Ltd., weight average molecular weight 100,000 to 200,000, chitosan concentration 10 wt%, deacetylation degree 80 to 85%) What was diluted as it is or with ion-exchanged water was applied to hinoki as a primer (primer). Specifically, as chitosan aqueous solution, the chitosan concentration was changed by 1% in the range of 1 to 10% by weight (samples 1 to 10), and the chitosan concentration was less than 1% by weight (specifically 0.9%). % By weight) (sample 11) were prepared, and each was applied to cypress wood.
And after wiping off the excess coating liquid with the waste about each, it was naturally dried at normal temperature.

次に、乾燥後のヒノキ材の下塗剤塗布面に、漆((有)田島漆店から入手、商品名「上生漆」)を、該漆と同重量(重量比=1:1)のテレビン油で希釈したものを刷毛で塗布し、次いで、余分な漆液をウエスで拭き取った後、温度20℃、相対湿度90%に設定した恒温恒湿槽内に放置して塗布した漆を硬化させた。このようにして、漆塗装物を得た。この漆塗装物は、キトサンを含む下地層と該下地層上に形成された漆塗膜とを有している。
尚、サンプル1〜11を用いて得られた各漆塗装物は、キトサンを含む下地層を有する面1平方メートル当たりのキトサンの含有量が、順に0.05g、0.10g、0.15g、0.20g、0.25g、0.30g、0.35g、0.40g、0.45g、0.50gである。
Next, lacquer (obtained from Tajima Urushi Lacquer Shop, trade name “Uejo Urushi”) on the surface of the dried hinoki timber primer is the same weight (weight ratio = 1: 1) of turpentine oil. The diluted lacquer was applied with a brush, then the excess lacquer solution was wiped off with a waste cloth, and then the applied lacquer was cured by leaving it in a constant temperature and humidity chamber set at a temperature of 20 ° C. and a relative humidity of 90%. . In this way, a lacquered product was obtained. This lacquered product has a base layer containing chitosan and a lacquer coating film formed on the base layer.
In addition, each lacquer coating thing obtained using Samples 1-11 has 0.05 g, 0.10 g, 0.15 g, 0 in order of content of chitosan per 1 square meter of the surface which has a base layer containing chitosan. .20 g, 0.25 g, 0.30 g, 0.35 g, 0.40 g, 0.45 g, and 0.50 g.

(比較例1,コントロール)
実施例1において、ヒノキ材に、キトサン水溶液を塗布することなく、漆をテレビン油で希釈したものを塗布した。それ以外は、実施例1と同様にして漆塗装物を得た。
(Comparative example 1, control)
In Example 1, the thing which diluted the lacquer with turpentine oil was apply | coated to the cypress material, without apply | coating chitosan aqueous solution. Otherwise, a lacquered product was obtained in the same manner as in Example 1.

(比較例2)
実施例1において、ヒノキ材に、キトサン水溶液を塗布したのに代えて、ヒノキ材に、市販の水性アクリル樹脂プライマー(和信ペイント(株)製の「水性サイディングシーラー」)を塗布した以外は、実施例1と同様にして漆塗装物を得た。
(Comparative Example 2)
In Example 1, instead of applying the chitosan aqueous solution to the cypress material, it was carried out except that a commercially available aqueous acrylic resin primer ("Aqueous siding sealer" manufactured by Washin Paint Co., Ltd.) was applied to the cypress material. A lacquered product was obtained in the same manner as in Example 1.

(比較例3)
実施例1において、ヒノキ材に、キトサン水溶液を塗布したのに代えて、ヒノキ材に、市販の溶剤型ニトロセルロースラッカー(和信ペイント(株)製の「ネオラックニス」)を塗布した以外は、実施例1と同様にして漆塗装物を得た。
(Comparative Example 3)
In Example 1, except that chitosan aqueous solution was applied to the cypress material, a commercially available solvent-type nitrocellulose lacquer (“Neolac varnish” manufactured by Washin Paint Co., Ltd.) was applied to the cypress material. A lacquered product was obtained in the same manner as in 1.

(比較例4)
実施例1において、ヒノキ材に、キトサン水溶液を塗布したのに代えて、ヒノキ材に、市販の溶剤型セラックニス(和信ペイント(株)製の「木のヤニ止めニス」)を塗布した以外は、実施例1と同様にして漆塗装物を得た。
(Comparative Example 4)
In Example 1, instead of applying the chitosan aqueous solution to the cypress material, a commercially available solvent-type shellac varnish ("Wood paint stop varnish" manufactured by Washin Paint Co., Ltd.) was applied to the cypress material, A lacquered product was obtained in the same manner as in Example 1.

(比較例5)
実施例1において、ヒノキ材に、キトサン水溶液を塗布したのに代えて、ヒノキ材に、市販の柿渋(株式会社トミヤマ製の「柿渋」、タンニンを5重量%含む液状物)を塗布した以外は、実施例1と同様にして漆塗装物を得た。
(Comparative Example 5)
In Example 1, instead of applying the chitosan aqueous solution to the cypress material, a commercially available strawberry shii (“Toshiyama” manufactured by Tomiyama Co., Ltd., a liquid containing 5% by weight of tannin) was applied to the cypress material. In the same manner as in Example 1, a lacquered product was obtained.

(色むらの評価)
実施例及び比較例で得られた各漆塗装物について、硬化後の漆塗装面の色むらを目視にて観察し、その結果を以下に示した。
実施例1:下塗剤として塗布した低分子量キトサン水溶液の濃度が1〜10重量%であるサンプル1〜10については、漆塗装面に色むらは殆ど生じなかった。これに対して、下塗剤として塗布した低分子量キトサン水溶液の濃度が0.9重量%であるサンプル11については、漆塗装面に色むらが生じた。
比較例1:漆塗装面に顕著な色むらが生じた。
比較例2:水性アクリル樹脂がテレビン油と漆の混合溶液によって溶解し、漆塗装面に顕著な色むらが生じた。
比較例3:ニトロセルローススラッカーがテレビン油と漆の混合溶液によって溶解し、漆塗装面に顕著な色むらが生じた。
比較例4:セラックニスがテレビン油と漆の混合溶液によって溶解し、漆塗装面に顕著な色むらが生じた。
比較例5:塗装面の色むらが比較例1に比べるとやや軽減されたが、色むらが生じた。
(Evaluation of uneven color)
About each lacquer coating thing obtained by the Example and the comparative example, the color nonuniformity of the lacquer coating surface after hardening was observed visually, and the result was shown below.
Example 1: About the samples 1-10 whose density | concentration of the low molecular-weight chitosan aqueous solution apply | coated as a primer is 1-10 weight%, color unevenness hardly produced on the lacquered surface. On the other hand, for sample 11 in which the concentration of the low molecular weight chitosan aqueous solution applied as a primer was 0.9% by weight, color unevenness occurred on the lacquered surface.
Comparative Example 1: Remarkable color unevenness occurred on the lacquered surface.
Comparative Example 2: The water-based acrylic resin was dissolved by the mixed solution of turpentine oil and lacquer, and noticeable color unevenness occurred on the lacquered surface.
Comparative Example 3: The nitrocellulose slacker was dissolved by the mixed solution of turpentine oil and lacquer, and noticeable color unevenness occurred on the lacquered surface.
Comparative Example 4: Shellac varnish was dissolved by a mixed solution of turpentine oil and lacquer, and noticeable color unevenness occurred on the lacquered surface.
Comparative Example 5: Color unevenness on the painted surface was slightly reduced as compared with Comparative Example 1, but color unevenness occurred.

これらの結果から、低分子量キトサンを下塗剤(プライマー)として用いた場合、特にキトサン濃度が1重量%以上である低分子量キトサンを用いた場合には、下塗剤(プライマー)として、アクリル樹脂やニトロセルロースラッカー、セラックニスを用いたものや、市販の柿渋を用いたものに比べて、色むらを顕著に低減でき、外観の良好な被塗装物が得られることが判る。
尚、実施例1において、キトサン濃度を1重量%から増加させていくと、5重量%程度までは色むらの抑制効果が向上したが、それ以上に濃度を高くしても、色むら抑制効果はほぼ変わらない程度となった。従って、低分子量キトサン溶液の濃度は、作業性やコストの点から、5重量%以下であることが好ましい。
本発明によれば、このように色むらが低減されるので、従来、適用が困難であった建築用途など、大面積への漆塗装、特に針葉樹材の大面積への漆塗装が可能となる。例えば、塗装面の面積が0.1〜50m2の建築部材等の塗装に漆を用いることができる。
From these results, when low molecular weight chitosan is used as a primer (primer), particularly when low molecular weight chitosan having a chitosan concentration of 1% by weight or more is used, acrylic resin or nitro is used as a primer (primer). It can be seen that the color unevenness can be remarkably reduced and a coated article having a good appearance can be obtained as compared with those using cellulose lacquer and shellac varnish and those using commercially available strawberries.
In Example 1, when the chitosan concentration was increased from 1% by weight, the color unevenness suppression effect was improved up to about 5% by weight, but even if the concentration was increased further, the color unevenness suppression effect was improved. Was almost unchanged. Therefore, the concentration of the low molecular weight chitosan solution is preferably 5% by weight or less from the viewpoint of workability and cost.
According to the present invention, color unevenness is reduced in this way, so that lacquer coating on a large area, especially lacquer coating on a large area of coniferous wood, can be achieved, such as architectural applications that have been difficult to apply. . For example, lacquer can be used for painting building materials having a painted surface area of 0.1 to 50 m 2 .

Claims (5)

キトサンを1.0重量%以上含み、該キトサンの重量平均分子量が400,000未満であるキトサン溶液からなることを特徴とする漆塗装の下塗剤。   A primer for lacquer coating comprising a chitosan solution containing chitosan in an amount of 1.0% by weight or more and having a weight average molecular weight of less than 400,000. 木材からなる被塗装物にキトサンを含む下地層を形成し、該下地層上に漆塗膜を形成してあることを特徴とする漆塗装物。   A lacquer coating product, wherein a base layer containing chitosan is formed on an object to be coated made of wood, and a lacquer coating film is formed on the base layer. 前記被塗装物は、前記下地層を有する面1平方メートル当たり、前記キトサンを0.01〜5g含んでいる請求項2記載の漆塗装物。   The lacquered article according to claim 2, wherein the article to be coated contains 0.01 to 5 g of the chitosan per square meter of the surface having the foundation layer. 前記被塗装物が針葉樹材であることを特徴とする請求項2又は3記載の漆塗装物。   The lacquered object according to claim 2 or 3, wherein the object to be coated is a softwood material. 請求項2〜4の何れかに記載の漆塗装物の製造方法であって、
前記被塗装物に、請求項1記載の漆塗装の下塗剤を塗布した後、有機溶剤で希釈した漆を塗布することを特徴とする漆塗装物の製造方法。
It is a manufacturing method of the lacquered thing in any one of Claims 2-4,
A method for producing a lacquered product, comprising applying the lacquered primer of claim 1 to the object to be coated, and then applying lacquer diluted with an organic solvent.
JP2007117820A 2007-04-27 2007-04-27 Primer for japanese lacquer coating Pending JP2008274057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007117820A JP2008274057A (en) 2007-04-27 2007-04-27 Primer for japanese lacquer coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007117820A JP2008274057A (en) 2007-04-27 2007-04-27 Primer for japanese lacquer coating

Publications (1)

Publication Number Publication Date
JP2008274057A true JP2008274057A (en) 2008-11-13

Family

ID=40052462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007117820A Pending JP2008274057A (en) 2007-04-27 2007-04-27 Primer for japanese lacquer coating

Country Status (1)

Country Link
JP (1) JP2008274057A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013158766A (en) * 2012-02-03 2013-08-19 Eco Cosmo:Kk Method of adjusting coarting underlayer of building to be coated
JP2013542062A (en) * 2010-09-13 2013-11-21 ヒェメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング Surface coating method and use of objects coated by said method
CN112745764A (en) * 2021-01-08 2021-05-04 闽江学院 Modified natural raw lacquer and preparation method and application thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559999A (en) * 1978-10-27 1980-05-06 Kiyoshi Igarashi Preparation of dyeing lacquer ware
JPH03153772A (en) * 1989-11-13 1991-07-01 Oomura Toryo Kk Intercoating material and method for applying topcoating material
JPH05293432A (en) * 1992-02-04 1993-11-09 Tottori Pref Gov Kogyo Gijutsu Shinko Kyokai Surface treatment of paint absorbable material
JPH08269383A (en) * 1995-03-31 1996-10-15 Nippon Paint Co Ltd Composition for film formation
JP2004018643A (en) * 2002-06-14 2004-01-22 Se Chemical Kk Coating composition for wood processed article, coating film formed from the coating composition and wood processed article having the coating film on surface
JP2004131622A (en) * 2002-10-11 2004-04-30 Dainichiseika Color & Chem Mfg Co Ltd Aqueous solution of chitosan, method for producing the same and method for coating article

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5559999A (en) * 1978-10-27 1980-05-06 Kiyoshi Igarashi Preparation of dyeing lacquer ware
JPH03153772A (en) * 1989-11-13 1991-07-01 Oomura Toryo Kk Intercoating material and method for applying topcoating material
JPH05293432A (en) * 1992-02-04 1993-11-09 Tottori Pref Gov Kogyo Gijutsu Shinko Kyokai Surface treatment of paint absorbable material
JPH08269383A (en) * 1995-03-31 1996-10-15 Nippon Paint Co Ltd Composition for film formation
JP2004018643A (en) * 2002-06-14 2004-01-22 Se Chemical Kk Coating composition for wood processed article, coating film formed from the coating composition and wood processed article having the coating film on surface
JP2004131622A (en) * 2002-10-11 2004-04-30 Dainichiseika Color & Chem Mfg Co Ltd Aqueous solution of chitosan, method for producing the same and method for coating article

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013542062A (en) * 2010-09-13 2013-11-21 ヒェメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング Surface coating method and use of objects coated by said method
US9539610B2 (en) 2010-09-13 2017-01-10 Chemetall Gmbh Method for coating surfaces and use of the objects coated using said method
JP2013158766A (en) * 2012-02-03 2013-08-19 Eco Cosmo:Kk Method of adjusting coarting underlayer of building to be coated
CN112745764A (en) * 2021-01-08 2021-05-04 闽江学院 Modified natural raw lacquer and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN105602377B (en) A kind of anti-bleeding seal coat of aqueous wooden ware and preparation method thereof, application
US20150093509A1 (en) Substrate stain compositions and methods of application
CN103834181A (en) Environment-friendly and durable wax oil and preparation method thereof
JP2008274057A (en) Primer for japanese lacquer coating
CN105419623A (en) Multifunctional aqueous UV varnish, and preparation and usage method
US20180215950A1 (en) Liquefied wood coating
US6245141B1 (en) Tannin stain inhibiting coating composition
Erkmen The use of hydroxyethyl cellulose as a transparent filling material in finishing polish
KR101710668B1 (en) Transparent coating composition for wood coating
JPS60170671A (en) Forming paint composition and method
JP5053697B2 (en) Lacquered primer
CN101339763A (en) Process for applying nitro antique white painting effect on surface of electric guitar
CN110000882B (en) Use of aqueous dispersions of vinylidene chloride/acrylic acid/vinyl chloride terpolymers as barrier coatings in wood substrates
JP6161815B2 (en) Means and method for preventing tannin migration from wood
RU2515521C2 (en) Method of making decorative coating
CA2862392C (en) Colored water-repellant and crocking-resistant compositions
JP5547365B2 (en) Surface treatment agent and surface treatment method by applying the treatment agent
Fazeli et al. An investigation into the effect of moisture content on adhesion strength of half-polyester and polyurethane clear paints applied to wood surface
JP2009209237A5 (en)
JP4964532B2 (en) Glossy painting method
JP2004018643A (en) Coating composition for wood processed article, coating film formed from the coating composition and wood processed article having the coating film on surface
CN109225784A (en) A kind of paint application technique delaying timber paint layer aging
JP5441346B2 (en) Paint and painted wood
KR101216630B1 (en) Stain Contained Ceramic and Method Manufacturing The Same
WO2023166446A1 (en) Timber coating composition and method

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20100222

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Effective date: 20120426

Free format text: JAPANESE INTERMEDIATE CODE: A971007

A131 Notification of reasons for refusal

Effective date: 20120515

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Effective date: 20120918

Free format text: JAPANESE INTERMEDIATE CODE: A02