JP2004528437A - Natural oil-based resin composition, method for producing the same, and natural paint composition based on the same - Google Patents

Natural oil-based resin composition, method for producing the same, and natural paint composition based on the same Download PDF

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JP2004528437A
JP2004528437A JP2002576563A JP2002576563A JP2004528437A JP 2004528437 A JP2004528437 A JP 2004528437A JP 2002576563 A JP2002576563 A JP 2002576563A JP 2002576563 A JP2002576563 A JP 2002576563A JP 2004528437 A JP2004528437 A JP 2004528437A
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ジョンホ キム
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ユハ ナチュラル ペイント コーポレーション リミテッド
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D191/00Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
    • C09D191/005Drying oils
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/005Drying oils
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/04Linoxyn
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    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L93/00Compositions of natural resins; Compositions of derivatives thereof
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L93/00Compositions of natural resins; Compositions of derivatives thereof
    • C08L93/04Rosin
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D191/00Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D193/00Coating compositions based on natural resins; Coating compositions based on derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D193/00Coating compositions based on natural resins; Coating compositions based on derivatives thereof
    • C09D193/04Rosin

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  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)
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Abstract

【課題】乾燥時間を短縮させることができ、環境適合性がよく、作業性と塗膜性が優れた天然ペイントを提供する。
【解決手段】桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、ロジンエステル25〜50重量部とを段階的に合成した後、その合成物100重量部にシトラステレビン油40乃至80重量部を加えて混合して合成される天然油性樹脂組成物である。また、天然油性樹脂30〜50重量部と、植物性油8〜20重量部と、レシチン0.1〜2重量部と、そして残りは天然ペイントの製造時に通例的に使用されている副原料を含んでなされている天然ペイント組成物を提供する。
An object of the present invention is to provide a natural paint which can shorten a drying time, has good environmental compatibility, and is excellent in workability and coatability.
SOLUTION: After stepwise synthesizing 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil and 25 to 50 parts by weight of rosin ester, citrus turpent oil 40 to 80 is added to 100 parts by weight of the synthesized product. It is a natural oily resin composition synthesized by adding and mixing parts by weight. Also, 30 to 50 parts by weight of a natural oily resin, 8 to 20 parts by weight of a vegetable oil, 0.1 to 2 parts by weight of lecithin, and the rest are used as auxiliary materials commonly used in the production of natural paint. A natural paint composition is provided.

Description

【技術分野】
【0001】
本発明は乾燥時間を短縮させる天然油性樹脂組成物とその製造方法及びそれを主成分に利用した天然ペイント組成物に関するものであり、さらに詳細には天然植物性油を所定の比率と所定の条件で合成してなされる天然油性樹脂組成物とその製造方法に関するものであり、また前記天然油性樹脂を主成分として再び通例的に使用される添加物を所定の割合で加えて混合することによって乾燥時間を大幅に短縮させると同時に塗膜の安全性と作業性を改善した天然ペイント組成物に関するものである。
【背景技術】
【0002】
現在一般的に使用されているペイントには乾燥性が非常に良好な化学ペイントと、乾燥性が絶対的に脆弱な天然ペイントがある。
【0003】
現在最も一般的で普遍的に使用されている化学ペイントは、乾燥性を確保するために、人体に有害な重金属成分、ベンジン、トルエン、キシレンなどの揮発性有機化合物(VOC)を多量に含有していることで速乾性を実現しているのが現状である。
【0004】
しかし、化学ペイントは有害重金属と揮発性有機化合物を多量含有しているためにペイントに鉛、クロムなどの毒性物質が残存していて、その乾燥過程では前記の毒性物質と共に芳香族炭化水素、ハロゲン化炭化水素、硫黄含有系炭化水素などのような揮発性有機化合物を持続的に外部に放出することによって、深刻な環境問題を起こしている。
【0005】
また、化学ペイントは人体にも直接的に作用してペイント作業者またはペイントに接触・吸入した者にとって呼吸器疾患、アレルギー、全身マヒ、癌などの病気の誘発因子と推定されている。また、化学ペイントを使用した新築の家、又は新塗装の家に引越した人々には、通例的にアレルギー、湿疹、下痢、せき、頭痛などの現象が頻繁に生じており、このような現象は‘新居病’または‘シックハウス(SickHouse)症候群’として広く知られている。
【0006】
実際に、韓国の環境部でさる96年11月頃の研究結果によると、「揮発性有機化合物(VOC)はオゾン発生と光化学スモッグの主要原因であり、癌を誘発する等の人体に致命的な有毒物質であり、その発生原因としては化学ペイントの使用によるものが約37%として最も大きい比重を占めている」と報告されたことがある。
【0007】
一方、外国の事例として米国の場合のある調査によると、「重金属や化学物質の中毒者のうちで約80%以上が住宅と室内で中毒された人々であった」という報告もあるが、このような事実を考慮する時に化学ペイントによる室内汚染は深刻な問題である。このような理由で米国とヨーロッパの先進国では既に大分以前からこれらを許容基準以上含有しているペイントに対しては法的に使用禁止の措置がとれられており、これによって天然ペイントヘの代替開発研究が促進されていると認識されている。
【0008】
一般に、天然ペイントは、フタル酸のような多塩基酸とグリセリンのような多価アルコールをエステル化させてオイルに変性したアルキツド(ALKYD)樹脂合成法が広く用いられている。この方法は、従来の化学ペイントが有している環境破壊と人体に有害な重金属成分の排除という課題を解決するために案出されたものである。
【0009】
しかし、このような方法で製造された従来の天然ペイントは環境適合性がよく、人体に無害であるという点では成功的であったが、ペイントの物性として最も重要な乾燥時間に対しては指触乾燥(Dry to the Touch)時間(ペイントの物性の1つで、ペイントが乾燥して、手を当ててもよい時間)が10時間、硬化乾燥時間が24乃至48時間という致命的な欠点を有しており、その他にも作業性不良、塗膜不良という問題点を有していた。
【0010】
このように、現在最も広く使用されている化学ペイントは乾燥時間という面では長所を有しているが、人体に有害で環境適合性に欠けるという点で限界が有るのに対して、天然ペイントは環境適合性がよく人体に無害であるという点では長所を有していながらも、乾燥時間の短縮・作業性不良・塗膜不良という課題を解決できなくて広く普及できない。
【0011】
このような問題点を痛感して、本発明者は刻苦の努力と時間をかけ、多数の実験と試行錯誤を重ねて、既存のドイツの天然ペイントより優秀な物性の独自の天然ペイントの開発を完了し、その結果が大韓民国に特許出願された1998年第40,664号(特許文献1)及び同第40,665号(特許文献2)である。該発明は天然ペイントの乾燥時間の短縮という点で非常に画期的な改善をなしたものであった。しかし、作業性と塗膜の安全性という観点からはさらなる研究開発が必要であった。
【特許文献1】
大韓民国公開特許第10−1998−0087904号公報
【特許文献2】
大韓民国公開特許第10−1998−0087905号公報
【発明の開示】
【発明が解決しようとする課題】
【0012】
そこで、本発明は、乾燥性が良好でありながら作業性及び塗膜安全性を改善した新しい組成の天然油性樹脂とその製造方法及び天然油性樹脂を主成分にした天然ペイントを提供することにその目的がある。
【課題を解決するための手段】
【0013】
本発明は前記の課題を解決するために、下記の手段を採用した。即ち、
請求項1記載の天然油性樹脂組成物は、桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、そしてロジンエステル20〜50重量部を段階的に合成した後、その合成物100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して合成されることを特徴とする。
【0014】
請求項2記載の天然油性樹脂組成物の製造方法は、天然油性樹脂組成物を製造するに当って、
a)桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、そしてロジンエステル20〜50重量部を各々あらかじめ製造する天然原料準備段階と、
b)前記それぞれの天然原料を秤量した後に反応釜に入れて、窒素のような不活性ガスを通過させながら200℃乃至300℃で7時間乃至12時間の間に合成反応をさせる1次合成段階と、
c)前記合成物の粘度がガスナー粘度計で粘度がVである状態において、再び3乃至7時間の間で追加反応をさせてガスナー粘度計で粘度がZであり、酸価が10以下になる時まで進行させる2次合成段階と、
d)その後加熱を中止して冷却させて前記反応釜内の温度が約90℃に至った時、前記の過程で得られた1次天然合成樹脂100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して常温で反応を終結させる3次合成段階を含むことを特徴とする。
【0015】
請求項3記載の天然油性樹脂組成物の製造方法は、請求項2記載の手段において、前記d)段階のシトラステレビン油はオレンジオイルとユーカリテレビン油を3:1乃至5:1の重量比で配合した後に80℃乃至250℃で4時間以上加熱精製して得られる純度99%以上のD−レモニンを主成分としたことを特徴とする。
【0016】
請求項4記載の天然ペイント組成物は、請求項1記載の天然油性樹脂30〜50重量部と、植物性油8〜20重量部と、レシチン0.1〜2重量部と、そして残りは天然ペイントの製造時に通例的に使用されている副原料を含んでなされることを特徴とする。
【0017】
そして、上記手段によれば、所定の植物性油を限定して選択し、これをさらに厳格な所定の比率及び合成条件下で各々進行させる。また、本発明による天然油性樹脂は、従来の化学ペイントの最大短所である有害な重金属の毒性成分を排除することができ、また従来の天然ペイントの最大短所である長時間の乾燥遅延と作業性及び安全性という問題を同時に解決する。
【0018】
また、本発明は、前記天然油性樹脂を主原料として使用し、残りの成分を副原料として使用して合成する天然ペイントを提供するという目的が達成される。また、本発明は前記天然合成樹脂と植物性油を主原料とし、通例的に使用される副原料を所定の比率と条件で合成することによって、前記目的を達成する。
【発明の効果】
【0019】
本発明による天然油性樹脂組成物は従来の化学ペイントのように多量の重金属と揮発性有機化合物で構成された乾燥剤を全く使用しないために、最終製品である天然ペイント組成物は環境に悪く、人体に有害な重金属と揮発性有機化合物が全く検出されず、環境適合性のよい製品の原料として有用に使用されうるに至った。
【0020】
また、本発明による天然油性樹脂は天然ペイント組成物の物性として総固形粉が55〜66%を占めるようにすることによって、作業性を大きく向上させて塗膜性を向上させるという優れた効果がある。
【0021】
また、本発明による天然ペイント組成物を使用する場合、天然ペイント組成物内の体積固形分及び隠蔽率が従来の化学ペイントよりきわめて優秀であるために経済性と施工性においても大きく向上する。
【発明を実施するための最良の形態】
【0022】
以上のような本発明の目的と別の特徴及び長所などは、次ぎに参照する本発明の好適な実施例により明確にできる。以下に本発明を詳細に説明する。
本発明は天然ペイント組成物を製造するに当って、主原料として使用される天然油性樹脂組成物とその製造方法を提供する。
【0023】
本発明は、桐油25〜40重量部と、煮亜麻仁油(Boiled Linseed Oil)25〜40重量部と、そしてロジンエステル(rosin ester)20〜50重量部を段階的に合成した後、その合成物100重量部に対してシトラステレビン油(Citrus Turpentine Oil)40乃至80重量部を加えて混合して合成されることを特徴とする天然油性樹脂組成物である。
【0024】
本発明は、前記の天然油性樹脂組成物を製造するに当って、桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、そしてロジンエステル20〜50重量部を各々あらかじめ製造する天然原料の準備段階と、前記それぞれの天然原料を秤量した後に反応釜に入れて、窒素のような不活性ガスを通過させながら200℃乃至300℃で7時間乃至12時間の間に合成反応をさせる1次合成段階と、前記合成物の粘度がガスナー粘度計で粘度がVである状態において、再び3乃至7時間の間で追加反応をさせてガスナー粘度計で粘度がZであり、酸価が10以下になる時まで進行させる2次合成段階と、その後に加熱を中止して冷却させて前記反応釜内の温度が90℃頃に至った時に前記の過程で得られた1次天然合成樹脂100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して常温で反応を終結させる3次合成段階を含む。
【0025】
本発明による天然原料の準備段階では、植物性油を基準として天然原料を選定してこれらを所定の割合で秤量することを含む。
【0026】
まず、桐油は沸騰点できれいに精製して純粋濃度で使用することが望ましい。桐油は重合型の乾性油として共有二重結合を有しており、ヨード値が比較的低いにもかかわらず乾燥性が良くて粘度が高い特性があるためである。また、桐油はα−エレオステアリン酸(α-eleostearic acid)を主成分としていて耐アルカリ性が良く、油脂のうちから乾燥が速くて、強靭な塗膜を形成する特性もある。前記の桐油は第1段階の天然原料全体に対して約25〜40重量部を使用する。
【0027】
25重量部以下では乾燥性に影響がそれほどない反面に、40重量部以上では乾燥性があまりにも良くて塗膜不良が発生するためである。前記の桐油は共有二重結合を有しており空気中の酸素が前記共有結合に作用してパロクサイド(Peroxide)を生成させ、続いて水酸基及び酸素ブリッジを生成して高分子化する。
【0028】
本発明でまた他の植物性油としては煮亜麻仁油(Boi1ed Linseed Oil)を使用する。
煮亜麻仁油は亜麻仁油(Linseed Oil)を約250℃〜300℃で加熱して使用するものであるが、この場合に最終製品の乾燥時間をさらに短縮させることができるためである。
【0029】
したがって、本発明において煮亜麻仁油を使用条件から全的に排除することはない。前記の煮亜麻仁油は第1段階の天然原料全体に対し約25〜40重量部を使用する。25重量部以下では塗料製造後の作業性と塗膜不良の現象が発生するようになって、40重量部以上では乾燥遅延と塗膜不良の現象が発生するためである。
【0030】
前記煮亜麻仁油は二重結合に隣接したメチレン基が酸化されてヒドロペルオキシド(hydroperoxide)になるが、これは不安定であってすぐに遊離基になって解離され、この遊離基が脂肪酸に作用してパロクサイド結合、エテール結合、c−c結合などを生じさせることによって、硬化されるようになる。
【0031】
本発明においてまた他の植物性油としてはロジンエステルを使用する。ロジンエステルは松脂をグリセリンで反応させて得ることができる。これは通常の方法をそのまま使用することができる。ロジンエステルは天然原料全体に対して約20〜50重量部を使用するが、これは、20重量部以下では塗膜の弾性が不良な反面、50重量部以上では塗膜の弾性が過度に硬くて潰れやすいためである。
【0032】
本発明では、前記それぞれの天然原料を秤量した後に反応釜に入れて、不活性ガスを通過させながら200℃乃至300℃で、3時間乃至8時間の間に合成反応をさせて1次合成段階を進行させる。
【0033】
不活性ガスは1次合成段階で天然原料と反応することを防止するためのものであり、窒素またはヘリウムなどを使用し、経済性の面で窒素がさらに望ましい。
【0034】
本発明において、1次合成段階を200℃以下で進行する場合には、重合反応が順調に進行せず、また、300℃以上で進行する場合には過重合現象が生じてゲル(ge1)化され易いために望ましくない。
【0035】
通例的に低温領域ではさらに長時間合成されなければならない反面、高温領域では比較的短時間に合成される傾向を示す。
【0036】
本発明においては、前記1次合成段階を終えて、続いて2次合成段階に移行する。2次合成段階は前記1次合成段階を終えた合成物の粘度がガスター粘度計(Test method of viscosity for transparent liquids(Gardner Tubes)で、Vである状態で、再び3乃至7時間の間に追加反応をさせ、ガスター粘度計で、粘度がZであり、酸価が10以下になる時まで進行させる。前記1次合成物は初めて液状及び固状で時間の経過によって順次液状に変化されて行くために、粘度と酸価の変化時点が重要である。
【0037】
もしも、前記の条件が成熟される以前に次の段階に移行する場合には塗膜の接着力が低下して、作業性が悪くなり樹脂の状態が不安定になる。これに反して、前記条件を超過するようになると、ゲル化されて過重合となり塗料の塗膜不良現象が発生するようになる。
【0038】
本発明においては、前記の1次合成物が2次合成段階をすぎると、最後の段階として3次合成段階に移行する。3次合成段階は追加合成段階以後、加熱を中止して冷却させて前記反応釜内の温度が90℃程度に至った時、前記の過程で得られた1次天然合成樹脂100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して常温で反応を終結させる過程である。
【0039】
本発明においてシトラステレビン油は天然溶剤として機能し、オレンジオイルとユーカリ(Euca1yptus)テレビン油を3:1乃至5:1の重量比で配合した後に80℃乃至250℃で4時間以上加熱精製して純度99%以上のD−レモニンを主成分としたものが望ましい。
【0040】
前記反応釜内の温度が90℃以上である場合には容易に沸騰して揮発されて凝固状態に転換されるためにそれ以下の温度、例えば、70℃程度が望ましい。
【0041】
本発明は前記諸般の過程を経て天然油性樹脂組成物を得るに至った。
【0042】
本発明による前記の天然油性樹脂組成物の物性は次のような値を有するものとして確認された。
【0043】
すなわち、本発明による天然油性樹脂はKSM5000の試験方法(2113)によって測定した時、不揮発成分が約60〜70%、ガスナー粘度計による時、粘度(G#、25℃)はO〜R、比重は0.85〜0.95であり、肉眼によって観察する時にあたかも水飴のような性状をしていた。
【0044】
本発明による前記の天然油性樹脂組成物は各種の天然ペイント組成物、エナメル、プライマー、そしてバニッシュなどの主成分として使用することができる。
【0045】
また、本発明は前記の製造方法によって収得された天然油性樹脂組成物を主原料として乾燥性と作業性及び塗膜性が優れた天然ペイント組成物を提供する。
【0046】
本発明による天然ペイント組成物は主原料である前記の天然油性樹脂30〜50重量部と、植物性油8〜20重量部と、レシチン0.1〜2重量部と、そして残りは天然ペイントの製造時に通例的に使用されている副原料を含んでいる点にその特徴がある。
【0047】
本発明において、前記天然油性樹脂はペイントとして使用される場合に空気中で酸素成分と迅速に容易に重合反応を起こして乾燥時間が大幅に短縮されるものと推定される。しかし、前記の天然油性樹脂が30重量部以下である場合には接着力が低下する反面に、50重量部以上では乾燥が遅延することが明らかになった。本発明において、前記の植物性油は、溶剤としての機能と空気中に揮発して塗膜形成機能の働きをする植物性油として、シトラステレピン油が最も望ましい。
【0048】
一方、本発明において、前記レシチンは天然添加剤として分散剤の機能を果たし、少量のみを投与することによって所定の目的を達成することができる。もしも、0.1重量部以下である場合には分散機能が弱くて、2重量部以上である場合には乾燥遅延の原因になるために、前記の範囲で使用するのが望ましい。
【0049】
本発明において、前記の副原料は通例的に使用されている顔料と乾燥剤及び充填材などを意味し、これは本発明による天然ペイント組成物の用途によって通例的に使用される。
【0050】
本発明による天然ペイント組成物は通常の方法と手順により製造される。その天然ペイント組成物が油性である場合には、まず前記天然油性樹脂と植物性油とレシチン及び顔料を適正比率の範囲内で混合し、粒度が10μm以下になるまでロールミル等により3〜4回程度に分けて攪拌し、再びその上に乾燥剤とその他の副原料を添加して混合した後に、フィルター充填して包装することで天然ペイントの完成品が製造される。
【0051】
本発明による前記天然ペイント組成物の物性は次のような値を有する。指触乾燥時間が2時間、硬化乾燥時間が10時間、不揮発成分が68.0±2%、粘度は70〜80Ku(KuはRrebs unitの略。Krebs-Stomer viscometerによって測定された粘度を示す単位)、比重が1.2±0.20g/リットル、隠蔽率が0.93±0.03%であった。
【0052】
また、本発明による3色(白色、赤色、緑色)の天然油性ペイント組成物を試作品として韓国化学試験研究院に依頼してそれぞれの諸般の物性を測定してみた結果は下記の表1のようであった。
【0053】
【表1−1】

Figure 2004528437
【0054】
【表1−2】
Figure 2004528437
【0055】
以上で本発明の天然油性樹脂組成物とその製造方法及びそれを主成分として利用した天然ペイント組成物を具体的で、詳細に説明したが、これは本発明の望ましい実施様態の範囲を記載したことだけであり、本発明がこれに限定されないことは当然である。
【0056】
以上では本発明を実施例によって詳細に説明したが、本発明は実施例によって限定されず、本発明が属する技術分野において通常の知識を有するものであれば本発明の思想と精神を離れることなく、本発明を修正または変更できる。【Technical field】
[0001]
The present invention relates to a natural oily resin composition for shortening the drying time, a method for producing the same, and a natural paint composition using the same as a main component, and more particularly to a natural vegetable oil in a predetermined ratio and a predetermined condition. The present invention relates to a natural oil-based resin composition and a method for producing the same, which are synthesized by the method described above. The present invention relates to a natural paint composition that significantly reduces the time and improves the safety and workability of a coating film.
[Background Art]
[0002]
Currently commonly used paints include chemical paints, which have very good drying properties, and natural paints, which have absolutely weak drying properties.
[0003]
At present, the most common and widely used chemical paints contain large amounts of heavy metal components and volatile organic compounds (VOCs) such as benzene, toluene, and xylene to ensure drying properties. At present, it is possible to achieve quick-drying.
[0004]
However, chemical paints contain a large amount of harmful heavy metals and volatile organic compounds, so that toxic substances such as lead and chromium remain in the paints.During the drying process, aromatic hydrocarbons and halogens are used together with the toxic substances. The continuous emission of volatile organic compounds such as hydrocarbons and sulfur-containing hydrocarbons to the outside causes serious environmental problems.
[0005]
Chemical paints also act directly on the human body, and are presumed to be factors that cause respiratory diseases, allergies, systemic paralysis, cancer and other diseases for paint workers or those who have come into contact with or inhaled paint. In addition, people who have moved to a newly built house or a newly painted house using chemical paint usually have frequent phenomena such as allergies, eczema, diarrhea, coughs, and headaches. Widely known as 'new house disease' or 'sick house syndrome'.
[0006]
In fact, according to a study conducted by the Ministry of the Environment in Korea around November 1996, "VOCs are a major cause of ozone generation and photochemical smog, and are fatal to the human body, such as inducing cancer. It is a toxic substance, and the cause of its generation is due to the use of chemical paint, which accounts for about 37% and has the largest specific gravity. "
[0007]
On the other hand, according to a survey in the United States as a foreign case, there is a report that "more than 80% of heavy metal and chemical poisoners were poisoned in homes and indoors." Considering these facts, indoor pollution by chemical paint is a serious problem. For this reason, the U.S. and developed countries in Europe have already been legally banned from using paints that contain these substances at or above acceptable levels for a long time, and this has led to the development of alternatives to natural paints. It is recognized that research is being promoted.
[0008]
In general, as a natural paint, an alkyl (ALKYD) resin synthesis method in which a polybasic acid such as phthalic acid and a polyhydric alcohol such as glycerin are esterified to be modified into an oil is widely used. This method has been devised to solve the problems of conventional chemical paints, such as environmental destruction and elimination of heavy metal components harmful to the human body.
[0009]
However, conventional natural paints produced in this way have been successful in that they have good environmental compatibility and are harmless to the human body, but they do not control the drying time, which is the most important physical property of the paint. The critical drawback is that Dry to the Touch time (one of the physical properties of the paint, the time when the paint dries and it can be touched) is 10 hours, and the curing and drying time is 24 to 48 hours. In addition, there were also problems such as poor workability and poor coating film.
[0010]
Thus, while the most widely used chemical paints currently have advantages in terms of drying time, natural paints have a limitation in that they are harmful to the human body and lack environmental compatibility. Although it has the advantage of being environmentally friendly and harmless to the human body, it cannot be widely used because it cannot solve the problems of reduced drying time, poor workability, and poor coating.
[0011]
In recognition of these problems, the present inventor spent a lot of effort and time, through many experiments and trial and error, to develop a unique natural paint with better physical properties than existing German natural paints. Completed and the results are 1998, 40,664 (Patent Literature 1) and 40,665 (Patent Literature 2), patent applications filed in Korea. The invention was a very breakthrough improvement in reducing the drying time of natural paint. However, further research and development was necessary from the viewpoint of workability and coating film safety.
[Patent Document 1]
Published Korean Patent Application No. 10-1998-0087904 [Patent Document 2]
Published Korean Patent Application No. 10-1998-0087905 [Disclosure of the Invention]
[Problems to be solved by the invention]
[0012]
Therefore, the present invention is to provide a natural oil-based resin having a new composition with improved drying properties and improved workability and coating safety, a method for producing the same, and a natural paint mainly containing the natural oil-based resin. There is a purpose.
[Means for Solving the Problems]
[0013]
The present invention employs the following means in order to solve the above problems. That is,
The natural oily resin composition according to claim 1 is obtained by stepwise synthesizing 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil, and 20 to 50 parts by weight of rosin ester, and then synthesizes 100. It is characterized in that it is synthesized by adding and mixing 40 to 80 parts by weight of citrus turpentine oil with respect to parts by weight.
[0014]
The method for producing a natural oily resin composition according to claim 2 is for producing a natural oily resin composition.
a) a natural raw material preparation step in which 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil, and 20 to 50 parts by weight of rosin ester are prepared in advance;
b) A primary synthesis step in which each of the natural raw materials is weighed, put into a reaction vessel, and subjected to a synthesis reaction at 200 to 300 ° C. for 7 to 12 hours while passing an inert gas such as nitrogen. When,
c) In the state where the viscosity of the compound is V in a gasner viscometer, an additional reaction is performed again for 3 to 7 hours, the viscosity is Z in the gasner viscometer, and the acid value becomes 10 or less. A second synthesis step to proceed until time;
d) Thereafter, the heating was stopped and the mixture was cooled, and when the temperature in the reactor reached about 90 ° C., 40 to 80 parts by weight of citrus turpentine oil was added to 100 parts by weight of the primary natural synthetic resin obtained in the above process. And a tertiary synthesis step of terminating the reaction at room temperature by adding and mixing parts.
[0015]
According to a third aspect of the present invention, in the method of the second aspect, the citrus turpent oil of step d) is a mixture of orange oil and eucalyptus turpentine in a weight ratio of 3: 1 to 5: 1. Thereafter, D-lemonin having a purity of 99% or more, which is obtained by heating and purifying at 80 ° C. to 250 ° C. for 4 hours or more, is mainly used.
[0016]
The natural paint composition according to claim 4 is 30 to 50 parts by weight of the natural oily resin according to claim 1, 8 to 20 parts by weight of vegetable oil, 0.1 to 2 parts by weight of lecithin, and the rest is natural. It is characterized in that it is made to include auxiliary materials usually used in the production of paint.
[0017]
According to the above means, predetermined vegetable oils are selected and limited, and each is advanced under strict predetermined ratios and synthesis conditions. In addition, the natural oil-based resin according to the present invention can eliminate harmful heavy metal toxic components, which are the greatest disadvantages of conventional chemical paints, and can prolong drying delay and workability, which are the greatest disadvantages of conventional natural paints. And solve the problem of safety at the same time.
[0018]
Further, the present invention achieves the object of providing a natural paint synthesized using the above-mentioned natural oil-based resin as a main raw material and using the remaining components as auxiliary raw materials. The present invention achieves the object by synthesizing the natural synthetic resin and vegetable oil as main raw materials and synthesizing commonly used auxiliary raw materials at a predetermined ratio and condition.
【The invention's effect】
[0019]
The natural oil-based resin composition according to the present invention does not use a desiccant composed of a large amount of heavy metals and volatile organic compounds as in the case of conventional chemical paints. No heavy metals and volatile organic compounds harmful to the human body were detected at all, and could be usefully used as raw materials for environmentally friendly products.
[0020]
In addition, the natural oil-based resin according to the present invention has an excellent effect of greatly improving workability and improving coating properties by making the total solid powder account for 55 to 66% as a physical property of the natural paint composition. is there.
[0021]
In addition, when the natural paint composition according to the present invention is used, the volume solid content and the hiding factor in the natural paint composition are much better than conventional chemical paints, so that the economic efficiency and workability are greatly improved.
BEST MODE FOR CARRYING OUT THE INVENTION
[0022]
The above objects and other features and advantages of the present invention can be clarified by preferred embodiments of the present invention to be referred to next. Hereinafter, the present invention will be described in detail.
The present invention provides a natural oil-based resin composition used as a main raw material in producing a natural paint composition and a method for producing the same.
[0023]
The present invention provides stepwise synthesis of 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil, and 20 to 50 parts by weight of rosin ester, and then the synthesized product. A natural oily resin composition characterized by being synthesized by adding and mixing 40 to 80 parts by weight of citrus turpentine oil with respect to 100 parts by weight.
[0024]
The present invention provides a natural oily resin composition as described above, wherein tung oil 25 to 40 parts by weight, boiled linseed oil 25 to 40 parts by weight, and rosin ester 20 to 50 parts by weight are each prepared in advance. After preparing the raw materials and weighing each of the natural raw materials, the raw materials are put into a reaction vessel and subjected to a synthesis reaction at 200 to 300 ° C. for 7 to 12 hours while passing an inert gas such as nitrogen. In the primary synthesis step, in a state where the viscosity of the synthesized product is V with a gasner viscometer, an additional reaction is performed again for 3 to 7 hours, the viscosity is Z with a gasner viscometer, and the acid value is A secondary synthesis step that proceeds until the temperature reaches 10 or less, and then the heating is stopped and cooled, and the primary natural synthetic resin obtained in the above process when the temperature in the reactor reaches about 90 ° C. 100 parts by weight And mixed by adding citrus turpentine oil 40 to 80 parts by weight of Te containing tertiary synthetic steps to terminate the reaction at room temperature.
[0025]
Preparing the natural raw material according to the present invention includes selecting natural raw materials based on vegetable oil and weighing them at a predetermined ratio.
[0026]
First, it is desirable that tung oil be purified at the boiling point and used in a pure concentration. This is because tung oil has a covalent double bond as a polymerizable drying oil and has characteristics of good drying properties and high viscosity despite its relatively low iodine value. Also, tung oil has α-eleostearic acid as a main component, has a good alkali resistance, has a property of drying fast among oils and fats, and has a property of forming a tough coating film. The tung oil is used in an amount of about 25 to 40 parts by weight based on the whole natural raw material of the first stage.
[0027]
When the amount is 25 parts by weight or less, the drying property is not so affected. On the other hand, when the amount is 40 parts by weight or more, the drying property is so good that a coating film defect occurs. The tung oil has a covalent double bond, and oxygen in the air acts on the covalent bond to generate peroxide, and subsequently forms a hydroxyl group and an oxygen bridge to polymerize.
[0028]
In the present invention, another vegetable oil is boiled linseed oil.
Boiled linseed oil is used by heating linseed oil at about 250 ° C. to 300 ° C. In this case, the drying time of the final product can be further reduced.
[0029]
Therefore, in the present invention, boiled linseed oil is not completely excluded from use conditions. The boiled linseed oil is used in an amount of about 25 to 40 parts by weight based on the whole natural raw material of the first stage. If the amount is less than 25 parts by weight, the workability after paint production and the phenomenon of coating film failure will occur, and if it is more than 40 parts by weight, the phenomenon of drying delay and coating film failure will occur.
[0030]
The boiled linseed oil oxidizes the methylene group adjacent to the double bond to hydroperoxide, which is unstable and is immediately released as a free radical, which dissociates into fatty acids. Then, a paroxide bond, an ether bond, a cc bond, and the like are caused to be cured.
[0031]
In the present invention, a rosin ester is used as another vegetable oil. Rosin esters can be obtained by reacting rosin with glycerin. This can use a usual method as it is. The rosin ester is used in an amount of about 20 to 50 parts by weight based on the whole of the natural raw material. This is because they are easily crushed.
[0032]
In the present invention, each of the natural raw materials is weighed, put into a reaction vessel, and subjected to a synthesis reaction at 200 ° C. to 300 ° C. for 3 hours to 8 hours while passing an inert gas to perform a primary synthesis step. To progress.
[0033]
The inert gas is used to prevent the natural gas from reacting with the natural raw material in the primary synthesis stage. For example, nitrogen or helium is used, and nitrogen is more preferable in terms of economy.
[0034]
In the present invention, when the primary synthesis step proceeds at a temperature of 200 ° C. or less, the polymerization reaction does not proceed smoothly. When the primary synthesis step proceeds at a temperature of 300 ° C. or more, an overpolymerization phenomenon occurs and a gel (ge1) is formed. It is not desirable because it is easily performed.
[0035]
In general, the compound must be synthesized for a longer time in a low temperature region, but tends to be synthesized in a relatively short time in a high temperature region.
[0036]
In the present invention, after the first synthesis step is completed, the process proceeds to the second synthesis step. In the second synthesis step, the viscosity of the compound after the first synthesis step is V in a test method of viscosity for transparent liquids (Gardner Tubes) and added again for 3 to 7 hours. The reaction is allowed to proceed with a Gaster viscometer until the viscosity is Z and the acid value is less than 10. The primary compound is liquid and solid for the first time and is gradually changed to liquid over time. For this reason, the point at which the viscosity and the acid value change are important.
[0037]
If the process proceeds to the next stage before the above conditions are matured, the adhesive strength of the coating film decreases, the workability deteriorates, and the state of the resin becomes unstable. On the other hand, if the above condition is exceeded, gelation occurs and overpolymerization occurs, resulting in a coating film defect phenomenon.
[0038]
In the present invention, when the above-mentioned primary compound has passed the secondary synthesis stage, the process proceeds to the tertiary synthesis stage as the last stage. In the third synthesis step, after the additional synthesis step, the heating is stopped and cooled, and when the temperature in the reactor reaches about 90 ° C., 100 parts by weight of the primary natural synthetic resin obtained in the above process is used. In this process, 40 to 80 parts by weight of citrus turpentine oil is added and mixed to terminate the reaction at room temperature.
[0039]
In the present invention, citrus turpentine functions as a natural solvent, and is mixed with orange oil and eucalyptus (Eucalyptus) turpentine in a weight ratio of 3: 1 to 5: 1 and then purified by heating at 80 ° C. to 250 ° C. for 4 hours or more for a purity of 99%. % Or more as a main component is desirable.
[0040]
When the temperature in the reaction vessel is 90 ° C. or higher, a temperature lower than that, for example, about 70 ° C. is desirable because it is easily boiled and volatilized to be converted into a solidified state.
[0041]
According to the present invention, a natural oil-based resin composition has been obtained through the above-mentioned various processes.
[0042]
The properties of the natural oil-based resin composition according to the present invention were confirmed to have the following values.
[0043]
That is, the natural oil-based resin according to the present invention has a non-volatile component of about 60 to 70% as measured by the test method (2113) of KSM5000, a viscosity (G #, 25 ° C.) of O to R, and a specific gravity as measured by a gasner viscometer. Was 0.85 to 0.95, and when observed with the naked eye, it had a property like syrup.
[0044]
The above-described natural oil-based resin composition according to the present invention can be used as a main component of various natural paint compositions, enamels, primers, and varnishes.
[0045]
The present invention also provides a natural paint composition having excellent drying properties, workability and coating properties, using the natural oil-based resin composition obtained by the above-mentioned production method as a main raw material.
[0046]
The natural paint composition according to the present invention comprises 30 to 50 parts by weight of the above-mentioned natural oily resin, 8 to 20 parts by weight of vegetable oil, 0.1 to 2 parts by weight of lecithin, and the rest of natural paint. It is characterized by the fact that it contains adjunct materials commonly used in the production.
[0047]
In the present invention, when the natural oil-based resin is used as a paint, it is presumed that the polymerization reaction quickly and easily occurs with an oxygen component in the air, so that the drying time is greatly reduced. However, it was found that when the amount of the natural oil-based resin was 30 parts by weight or less, the adhesive force was reduced, but when the amount was 50 parts by weight or more, drying was delayed. In the present invention, the above-mentioned vegetable oil is most preferably a citrus turpentine oil as a vegetable oil which functions as a solvent and volatilizes in air to perform a film-forming function.
[0048]
On the other hand, in the present invention, the lecithin functions as a dispersant as a natural additive, and a predetermined object can be achieved by administering only a small amount. If the amount is less than 0.1 part by weight, the dispersing function is weak, and if the amount is more than 2 parts by weight, drying delay may be caused.
[0049]
In the present invention, the auxiliary materials refer to commonly used pigments, desiccants, fillers, and the like, which are commonly used depending on the use of the natural paint composition according to the present invention.
[0050]
The natural paint composition according to the present invention is manufactured by usual methods and procedures. When the natural paint composition is oily, the natural oily resin, vegetable oil, lecithin and pigment are first mixed within an appropriate ratio, and the mixture is rolled 3 to 4 times with a roll mill or the like until the particle size becomes 10 μm or less. Stirring is performed in different degrees, a desiccant and other auxiliary materials are again added thereto, mixed, and then filled with a filter and packaged to produce a finished natural paint.
[0051]
The properties of the natural paint composition according to the present invention have the following values. Touch drying time is 2 hours, curing drying time is 10 hours, non-volatile component is 68.0 ± 2%, viscosity is 70-80 Ku (Ku is an abbreviation of Rrebs unit. Unit indicating viscosity measured by Krebs-Stomer viscometer) ), The specific gravity was 1.2 ± 0.20 g / liter, and the hiding factor was 0.93 ± 0.03%.
[0052]
Also, the three-color (white, red, and green) natural oil-based paint compositions according to the present invention were commissioned to the Korea Institute of Chemical Testing as prototypes, and various physical properties were measured. The results are shown in Table 1 below. It seemed.
[0053]
[Table 1-1]
Figure 2004528437
[0054]
[Table 1-2]
Figure 2004528437
[0055]
Although the natural oil-based resin composition of the present invention, the method for producing the same, and the natural paint composition using the same as a main component have been described in detail, they have described the scope of the preferred embodiment of the present invention. Of course, the present invention is not limited to this.
[0056]
In the above, the present invention has been described in detail by examples, but the present invention is not limited by the examples, without departing from the spirit and spirit of the present invention as long as the person has ordinary knowledge in the technical field to which the present invention belongs. The present invention can be modified or changed.

Claims (4)

桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、そしてロジンエステル20〜50重量部を段階的に合成した後、その合成物100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して合成されることを特徴とする天然油性樹脂組成物。After stepwise synthesizing 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil, and 20 to 50 parts by weight of rosin ester, 40 to 80 parts by weight of citrus turpent oil to 100 parts by weight of the synthesized product A natural oily resin composition characterized by being synthesized by adding and mixing. 天然油性樹脂組成物を製造するに当って、
a)桐油25〜40重量部と、煮亜麻仁油25〜40重量部と、そしてロジンエステル20〜50重量部を各々あらかじめ製造する天然原料準備段階と、
b)前記それぞれの天然原料を秤量した後に反応釜に入れて、窒素のような不活性ガスを通過させながら200℃乃至300℃で7時間乃至12時間の間に合成反応をさせる1次合成段階と、
c)前記合成物の粘度がガスナー粘度計で粘度がVである状態において、再び3乃至7時間の間で追加反応をさせてガスナー粘度計で粘度がZであり、酸価が10以下になる時まで進行させる2次合成段階と、
d)その後加熱を中止して冷却させて前記反応釜内の温度が約90℃に至った時、前記の過程で得られた1次天然合成樹脂100重量部に対してシトラステレビン油40乃至80重量部を加えて混合して常温で反応を終結させる3次合成段階を含むことを特徴とする天然油性樹脂組成物の製造方法。
In producing a natural oily resin composition,
a) a natural raw material preparation step in which 25 to 40 parts by weight of tung oil, 25 to 40 parts by weight of boiled linseed oil, and 20 to 50 parts by weight of rosin ester are prepared in advance;
b) A primary synthesis step in which each of the natural raw materials is weighed, put into a reaction vessel, and subjected to a synthesis reaction at 200 to 300 ° C. for 7 to 12 hours while passing an inert gas such as nitrogen. When,
c) In the state where the viscosity of the compound is V in a gasner viscometer, an additional reaction is performed again for 3 to 7 hours, the viscosity is Z in the gasner viscometer, and the acid value becomes 10 or less. A second synthesis step to proceed until time;
d) Thereafter, the heating was stopped and the mixture was cooled, and when the temperature in the reactor reached about 90 ° C., 40 to 80 parts by weight of citrus turpentine oil was added to 100 parts by weight of the primary natural synthetic resin obtained in the above process. A method for producing a natural oil-based resin composition, comprising a tertiary synthesis step in which a reaction is terminated at room temperature by adding and mixing parts.
前記d)段階のシトラステレビン油はオレンジオイルとユーカリテレビン油を3:1乃至5:1の重量比で配合した後に80℃乃至250℃で4時間以上加熱精製して得られる純度99%以上のD−レモニンを主成分としたことを特徴とする請求項2に記載の製造方法。The citrus turpentine oil of the step d) is obtained by blending orange oil and eucalyptus turpentine in a weight ratio of 3: 1 to 5: 1 and then heat refining at 80 ° C. to 250 ° C. for 4 hours or more. The method according to claim 2, wherein lemonin is a main component. 請求項1に記載の天然油性樹脂30〜50重量部と、植物性油8〜20重量部と、レシチン0.1〜2重量部と、そして残りは天然ペイントの製造時に通例的に使用されている副原料を含んでなされることを特徴とする天然ペイント組成物。30 to 50 parts by weight of the natural oily resin according to claim 1, 8 to 20 parts by weight of vegetable oil, 0.1 to 2 parts by weight of lecithin, and the rest being customarily used in the production of natural paints. A natural paint composition, characterized in that it comprises auxiliary ingredients.
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