JP2003512922A - How to apply powder coatings on non-metallic substrates - Google Patents
How to apply powder coatings on non-metallic substratesInfo
- Publication number
- JP2003512922A JP2003512922A JP2001533913A JP2001533913A JP2003512922A JP 2003512922 A JP2003512922 A JP 2003512922A JP 2001533913 A JP2001533913 A JP 2001533913A JP 2001533913 A JP2001533913 A JP 2001533913A JP 2003512922 A JP2003512922 A JP 2003512922A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- composition
- powder coating
- weight
- polyester resin
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0493—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases using vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
- B05D7/08—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood using synthetic lacquers or varnishes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
(57)【要約】 特定長さのリグノセルロース物質、例えば特定長さの木材のような非金属基質に粉末塗料を適用する方法が開示される。適当な非水溶剤に溶解させるか、または水に混合もしくは分散させた、潜伏性触媒を含有する早期促進性不飽和ポリエステル樹脂を含有する組成物を基質に含浸させるか、または表面塗装する。その後、非水溶剤または水を除き、基質を静電界内または流動層中に入れて、それに粉末塗料組成物を適用する。ついで、基質を高温に曝露して、基質中または基質上のポリエステル樹脂を重合および/または架橋させ、粉末塗料組成物を硬化させて、粉末塗膜を形成させる。この結果は、多くの用途に用いることが出来る装飾粉末塗装を有する製品である。 (57) [Summary] A method is disclosed for applying a powder coating to a non-metallic substrate, such as a specific length of lignocellulosic material, for example, a specific length of wood. The substrate is impregnated or surface coated with a composition containing an early accelerating unsaturated polyester resin containing a latent catalyst, dissolved or mixed or dispersed in a suitable non-aqueous solvent with water. Thereafter, the non-aqueous solvent or water is removed and the substrate is placed in an electrostatic field or in a fluidized bed to which the powder coating composition is applied. The substrate is then exposed to elevated temperatures to polymerize and / or crosslink the polyester resin in or on the substrate, and to cure the powder coating composition to form a powder coating. The result is a product with a decorative powder coating that can be used for many applications.
Description
【0001】
本発明は、たとえばセメントで結合されているパーティクルボードのような非
金属基質に粉末塗料を適用する方法に関する。The present invention relates to a method for applying powder coatings to non-metallic substrates such as particle boards that are cemented together.
【0002】
粉末塗装は主に金属物品への装飾塗料の適用に対して与えられる用語である。
該塗料は、静電界内で、乾燥顔料粒子を、摩擦または静電的に活性化させる特殊
なガンから物品に向かって噴射し、静電力によって粒子を物品に付着させること
によって物品に適用される。粒子は物品表面に付着し、そして静電界力によって
必要な堆積が得られるまで連続的に粒子が付着し、その後過剰の粉末は物品から
落下して、回収することができる。次に、物品は、通常140℃から185℃の
範囲の適当な高温のオーブンか、または紫外線の存在下で比較的低温のオーブン
内を移動させて、粉末粒子を溶融させ、流動させ、会合させ、さらに硬化させて
、塗膜を形成させる。Powder coating is a term given primarily for the application of decorative paints to metal articles.
The coating is applied to an article by spraying dry pigment particles into the article from a special gun that frictionally or electrostatically activates in an electrostatic field and electrostatically attaching the particles to the article. . The particles adhere to the surface of the article, and particles adhere continuously until the required deposition is obtained by electrostatic field forces, after which excess powder falls from the article and can be collected. The article is then moved in a suitably hot oven, typically in the range 140 ° C to 185 ° C, or in a relatively cold oven in the presence of ultraviolet light to melt, flow and associate the powder particles. Then, it is further cured to form a coating film.
【0003】
粉末塗料の利点は、種々のテキスチャー及び表面仕上げを達成することができ
ることにあり、その塗膜は極めて強靭で耐摩耗性があり、外装品種の場合には耐
候性を有する。さらに、粉末塗装法は無溶剤であり、粉末は回収して再使用でき
るので、むだがほとんど無い。物品上の塗膜の厚さは極めて正確に制御すること
ができる。さらに、この方法は複雑な形状の物品に対して特殊の適用法を有する
。さらに粉末塗料はそのたわみ性及び密着性を特徴とするので、粉末塗装後に、
平板のような物品を曲線またはエッジにわたり後加工することができる。The advantage of powder coatings is that different textures and surface finishes can be achieved, the coatings being extremely tough, abrasion-resistant and, in the case of exterior grades, weather-resistant. Furthermore, the powder coating method is solventless, and the powder can be collected and reused, so there is almost no waste. The thickness of the coating on the article can be controlled very accurately. Furthermore, this method has particular application to articles of complex shape. Furthermore, since powder coating is characterized by its flexibility and adhesion, after powder coating,
Articles such as slabs can be post-processed over curves or edges.
【0004】
粉末塗装法の1つの要件は、粉末塗料組成物の粒子を付着させるために、塗装
される物品が静電界を維持できなければならないということである。静電界を維
持しない物品は、粉末塗料組成物の粒子を該物品に付着させるために、濡らすか
または湿らすことも有り得ると考えられる。しかし、物品のオーブン加熱は分解
開始、すなわち熱せられた物品から融合粉末フィルムを通ってガスが逸出すると
きに「発泡」を生じることがある。代替策は、粉末塗料を適用する前に物品を、
例えば流動層中で予熱する溶融塗装である。One requirement of the powder coating method is that the article to be coated must be able to maintain an electrostatic field in order to deposit the particles of the powder coating composition. It is believed that an article that does not maintain an electrostatic field can be wet or wet to deposit particles of the powder coating composition onto the article. However, oven heating of the article can cause "foaming" as it begins to decompose, ie, gas escapes from the heated article through the fused powder film. The alternative is to apply the article before applying the powder coating,
For example, melt coating that preheats in a fluidized bed.
【0005】
Windsor Technologies LimitedのPCT特許出
願第PCT/GB 97/01464(WO 97/45591)号は特定長さ
のリグノセルロース物質に粉末塗料を適用する方法を教示している。この方法は
、適当な非水溶剤に溶解した無水ジカルボン酸もしくは無水トリカルボン酸を含
む含浸組成物か、適当な非水溶剤に溶解したイソシアナート熱硬化性樹脂か、ま
たはこの両者の組合せで該物質を含浸させ;必要ならば、含浸された長さの該物
質から過剰の含浸組成物を除き;該非水溶剤を除き;静電界内または流動層中に
含浸された長さのリグノセルロース物質を入れ、粉末塗料組成物をそれに付着さ
せるように適用し;ついで特定長さのリグノセルロース物質を高温に曝露して該
特定長さのリグノセルロース物質中の樹脂を重合および/または架橋させ、そし
て粉末塗料組成物を硬化させて、粉末塗膜を形成させる工程を含む。PCT Patent Application No. PCT / GB 97/01464 (WO 97/45591) from Windsor Technologies Limited teaches a method of applying a powder coating to a specific length of lignocellulosic material. This method involves the use of an impregnating composition containing dicarboxylic anhydride or tricarboxylic anhydride dissolved in a suitable non-aqueous solvent, an isocyanate thermosetting resin dissolved in a suitable non-aqueous solvent, or a combination of both. If necessary, remove excess impregnating composition from the impregnated length of the material; remove the non-aqueous solvent; add impregnated length of lignocellulosic material in an electrostatic field or in a fluidized bed. A powder coating composition is applied thereover; then a length of lignocellulosic material is exposed to elevated temperatures to polymerize and / or crosslink the resin in the length of lignocellulosic material, and a powder coating. Curing the composition to form a powder coating.
【0006】
この方法はイソシアナート熱硬化性樹脂と水またはセルロースとの化学反応の
副生物として二酸化炭素発生の不利益を受けることがある。
英国特許第1,348,272号は、石英またはコランダムのような耐摩耗性
粒子で静かに湿らせながら、水の存在によって静電引力が得られる特定長さの紙
の粉末塗装法を教示している。しかし、これには、前か後に適用した熱硬化性樹
脂を硬化させる前に該物質を乾燥させることが必要である。This method may suffer from the carbon dioxide generation penalty as a by-product of the chemical reaction of the isocyanate thermosetting resin with water or cellulose. British Patent No. 1,348,272 teaches a powder coating method for a length of paper in which electrostatic attraction is obtained by the presence of water while gently moistening with abrasion resistant particles such as quartz or corundum. ing. However, this requires that the material be dried prior to curing the thermosetting resin applied before or after.
【0007】
DSM N.V.の欧州特許出願第636669号は粉末塗料配合物用の放射
線硬化型結合剤組成物を教示している。この結合剤組成物は、不飽和基1モル当
たり300から1800グラムの不飽和度(WPU)、800から6800の分
子量(Mn)、および1dPasから800dPasの粘度、ならびにビニルエ
ーテル、ビニルエステルまたは(メタ)アクリレート官能基を有する架橋剤を有
するポリマーを含む。該ポリマーは好ましくは不飽和ポリエステルおよび/また
は不飽和ポリアクリレートである。結合剤組成物は、木材やプラスチックのよう
な感熱基質に適用可能で、かつUVまたは電子線で硬化可能な粉末塗料配合物の
調製に用いることができる。DSM N.M. V. European Patent Application No. 636669 teaches a radiation curable binder composition for powder coating formulations. The binder composition has a degree of unsaturation (WPU) of 300 to 1800 grams per mole of unsaturated group, a molecular weight (Mn) of 800 to 6800, and a viscosity of 1 dPas to 800 dPas, and vinyl ether, vinyl ester or (meth). Includes polymers with crosslinkers having acrylate functionality. The polymer is preferably an unsaturated polyester and / or an unsaturated polyacrylate. The binder composition is applicable to heat sensitive substrates such as wood and plastics and can be used to prepare UV or electron beam curable powder coating formulations.
【0008】
非金属基質に粉末塗装できる方法に対する要望がある。
発明の要約
本発明によれば、下記各工程を含む非金属基質に粉末塗料を適用する方法が提
供される:
(a)(i)適当な非水溶剤中に溶解された、潜伏性溶剤を含有する早期促進性
不飽和ポリエステル樹脂;および
(ii)水に混合または分散された、潜伏性触媒を含有する早期促進性不
飽和ポリエステル樹脂
から選ばれたポリエステル樹脂を含有する組成物を該基質に含浸させるか
または該基質表面に適用する工程;
(b)該非水溶剤または水を除く工程;
(c)工程(b)からの該基質を静電界内または流動層中に入れて、該粉末塗料
組成物が該基質に付着するように、該粉末塗料組成物を該基質に適用する
工程;および
(d)次に、工程(c)の基質を高温に曝露して、該基質中または基質上の該ポ
リエステル樹脂を重合及び/または架橋させ、そして該粉末塗料組成物を
硬化させて該粉末塗膜を形成させる工程。There is a need for a method that can be powder coated on non-metallic substrates. SUMMARY OF THE INVENTION According to the present invention there is provided a method of applying a powder coating to a non-metallic substrate comprising the steps of: (a) (i) a latent solvent dissolved in a suitable non-aqueous solvent. An early-accelerating unsaturated polyester resin containing; and (ii) a composition containing a polyester resin selected from an early-accelerating unsaturated polyester resin containing a latent catalyst, which is mixed or dispersed in water. Impregnating or applying to the surface of the substrate; (b) removing the non-aqueous solvent or water; (c) placing the substrate from step (b) in an electrostatic field or in a fluidized bed to form the powder coating. Applying the powder coating composition to the substrate such that the composition adheres to the substrate; and (d) then exposing the substrate of step (c) to elevated temperature to in or on the substrate. Polymerizing the polyester resin of Or crosslinked, and the powder coating composition is cured step of forming the powder coating.
【0009】
非金属基質は、たとえば特定長さのリグノセルロース物質、たとえば特定長さ
の紙またはカードボードまたは木材;中密度ファイバーボード、高密度ファイバ
ーボード、またはファイバー補強フェノール樹脂複合物のような特定長さのファ
イバーボード;ファイバーセメントもしくはセメントで結合させたパーティクル
ボードのようなセメント製品、またはセメント発泡鉱物複合体等であることがで
きる。Non-metallic substrates include, for example, specific lengths of lignocellulosic material, such as specific lengths of paper or cardboard or wood; medium density fiberboards, high density fiberboards, or fiber reinforced phenolic resin composites. It can be a length of fiberboard; a cement product such as fiber cement or cement bonded particleboard, or a cement foam mineral composite.
【0010】 本発明の方法は下記の種々の任意の各工程を含むことができる: (e) 工程(b)後、かつ工程(c)前に、基質を予熱する工程;または (f) 工程(b)後、かつ工程(c)前に、基質を真空にさらす工程;または (g) 工程(b)後、かつ工程(c)前に、基質を予熱した後、基質を真空に さらす工程。[0010] The method of the present invention can include each of the following various optional steps: (E) preheating the substrate after step (b) and before step (c); or (F) exposing the substrate to a vacuum after step (b) and before step (c); or (G) After the step (b) and before the step (c), the substrate is preheated and then the substrate is evacuated. Exposing process.
【0011】
工程(a)において、組成物は、ポリエステル樹脂の非水溶剤と同一かまたは
相溶することができる非水溶剤、または水のような適当な溶剤に溶解した無水ジ
カルボン酸または無水トリカルボン酸を含むことができる。In step (a), the composition is a non-aqueous solvent that is the same as or compatible with the non-aqueous solvent of the polyester resin, or dicarboxylic anhydride or tricarboxylic anhydride dissolved in a suitable solvent such as water. An acid can be included.
【0012】
工程(a)において、組成物は、ポリエステル樹脂の非水溶剤と同一かまたは
相溶することができる適当な非水溶剤に溶解されたスチレンポリマーを含むこと
もできる。
態様の説明
本発明の重要な点は、非金属基質を、ポリエステル樹脂で含浸させるか、また
は表面塗装し、こうして静電引力を誘発するように変性させ;基質表面を安定化
させ、硬化させ、そして強化させ;処理基質中のポリエステル樹脂が適用粉末塗
料と化学結合を形成し;そして関与する化学反応がガスを発生せず;すべてが基
質の効果的な粉末塗装に寄与することにある。In step (a), the composition can also include a styrene polymer dissolved in a suitable non-aqueous solvent that is the same as or compatible with the non-aqueous solvent of the polyester resin. DESCRIPTION OF EMBODIMENTS An important aspect of the present invention is that a non-metallic substrate is impregnated or surface-coated with a polyester resin and thus modified to induce electrostatic attraction; the substrate surface is stabilized and cured, And strengthening; the polyester resin in the treated substrate forms chemical bonds with the applied powder coating; and the chemical reactions involved do not evolve gas; all contribute to the effective powder coating of the substrate.
【0013】
本発明の方法の工程(a)は、適当な非水溶剤に溶解させるかまたは水に混合
もしくは分散させた、潜伏性触媒を含有する早期促進性ポリエステル樹脂を含む
組成物を、基質に含浸させるかまたは基質表面に適用することである。Step (a) of the process of the present invention comprises the step of adding a composition comprising an early accelerating polyester resin containing a latent catalyst, dissolved in a suitable non-aqueous solvent or mixed or dispersed in water, to a substrate. Is either impregnated into or is applied to the substrate surface.
【0014】
ポリエステル樹脂は適当な不飽和ポリエステル樹脂であることができる。適当
な樹脂の例は、良好な耐薬品性及び耐水性が重要である用途に開発されたイソフ
タル酸ネオペンチルグリコール不飽和ポリエステル樹脂である。具体例は、とく
にフィラメントワインディング用、船舶用、水泳プール用、およびPVCラミネ
ート用に設計されているNCS Resins of South Afric
a製NCS Ultraset 993である。該樹脂は下記の性状を有する:
良好な耐汚染姓お呼び耐熱衝撃性;
アルカリ条件を含む広範囲の攻撃的環境に対する良好な耐熱性及び耐薬品性。The polyester resin can be any suitable unsaturated polyester resin. An example of a suitable resin is neopentyl glycol isophthalate unsaturated polyester resin developed for applications where good chemical and water resistance are important. Examples include NCS Resins of South Africa, specifically designed for filament winding, marine, swimming pool, and PVC laminates.
a NCS Ultraset 993 manufactured by a. The resin has the following properties:
Good stain resistance and thermal shock resistance; good heat and chemical resistance to a wide range of aggressive environments including alkaline conditions.
【0015】[0015]
【表1】 [Table 1]
【0016】
他の選択肢は、硬質イソフタル酸樹脂であるNCS 33410のような硬質
ポリエステル樹脂とアジピン酸変性不飽和ポリエステル樹脂とを混合し、とくに
樹脂を撓みやすくするために、NCS Resins of South Af
rica製8130のようなイソフタル酸樹脂を硬質ポリエステル樹脂の50重
量%までの量で添加することである。硬化した8130の性状は下記の通りであ
る。Another option is to mix a hard polyester resin, such as NCS 33410, which is a hard isophthalic acid resin, with an adipic acid modified unsaturated polyester resin, and especially to make the resin more flexible, NCS Resins of South Af.
The addition of an isophthalic acid resin, such as 8130 from Rica, in an amount up to 50% by weight of the hard polyester resin. The properties of the cured 8130 are as follows.
【0017】[0017]
【表2】 [Table 2]
【0018】
不飽和ポリエステル樹脂は早期促進性でなければならない。該樹脂を、典型的
には樹脂の重量に基づいて0.25重量%から1.5重量%の量(0.25重量
%、1.5重量%共に含む)のナフテン酸コバルトまたはオクタン酸コバルトを
含有するホワイトスピリット溶液を用いて早期促進性にする。その後、樹脂は、
60℃以上、さらに典型的には80℃を上回る領域の温度で分解して、重合を誘
発させる潜伏性触媒で触媒作用を行わせる。適当な潜伏性触媒の例は、Akzo
Chemie製Triganox 29B240またはTriganox 2
9B50のようなジ第三級ブチルペルオキシ3,3,5−トリメチルシクロヘキ
サンのトリブチルフタレート溶液、およびTBTB等という銘柄でIntero
xから市販されている第三級ブチルペルベンゾエートのようなベンゾイルペルオ
キシド配合物である。The unsaturated polyester resin must be prematurely accelerated. The resin is typically in the amount of 0.25 wt% to 1.5 wt% cobalt naphthenate or cobalt octanoate, including both 0.25 wt% and 1.5 wt% based on the weight of the resin. White spirit solution containing is used for early acceleration. After that, the resin
It is catalyzed by a latent catalyst that decomposes and induces polymerization at temperatures in the region of 60 ° C. and above, more typically above 80 ° C. Examples of suitable latent catalysts are Akzo
Chemie Triganox 29B240 or Triganox 2
A solution of ditertiary butyl peroxy 3,3,5-trimethylcyclohexane in tributyl phthalate such as 9B50, and TBTB etc.
benzoyl peroxide formulations such as tertiary butyl perbenzoate commercially available from X. Co.
【0019】
不飽和ポリエステル樹脂は適当な非水溶剤に溶解させることができる。溶剤の
選択はコスト、毒性、蒸発速度及び組成物中の他成分との相溶性によって左右さ
れる。適当な非水溶剤の例はジクロロメタンおよびアセトンである。The unsaturated polyester resin can be dissolved in a suitable non-aqueous solvent. The choice of solvent depends on cost, toxicity, evaporation rate and compatibility with other components in the composition. Examples of suitable non-aqueous solvents are dichloromethane and acetone.
【0020】
代替品として、不飽和ポリエステル樹脂は水に分散可能かまたは混合可能な樹
脂であることができ、その場合には水はキャリヤーとして用いることができる。
組成物は好ましくは、該組成物の15重量%から40重量%の量(15重量%
、40重量%を共に含む)のポリエステル樹脂を含有する。組成物の残余は、非
水溶剤または水;任意に、後で詳しく述べる無水物またはスチレンポリマーのよ
うな補足的成分;及び触媒である。触媒は好ましくは、組成物の0.2重量%か
ら0.8重量%の量で存在する。As an alternative, the unsaturated polyester resin can be a water dispersible or miscible resin, in which case water can be used as a carrier. The composition is preferably in an amount of 15% to 40% by weight of the composition (15% by weight).
, 40 wt% together) of polyester resin. The balance of the composition is a non-aqueous solvent or water; optionally, a supplemental component such as an anhydride or styrene polymer detailed below; and a catalyst. The catalyst is preferably present in an amount of 0.2% to 0.8% by weight of the composition.
【0021】
組成物は無水マレイン酸、無水フタル酸、無水コハク酸及び無水テトラヒドロ
フタル酸からなる群から選ばれる無水ジカルボン酸、または無水トリメリット酸
のような無水トリカルボン酸を含むこともできる。好ましくは酸無水物が無水マ
レイン酸である。The composition may also include a dicarboxylic anhydride selected from the group consisting of maleic anhydride, phthalic anhydride, succinic anhydride and tetrahydrophthalic anhydride, or a tricarboxylic anhydride such as trimellitic anhydride. Preferably the acid anhydride is maleic anhydride.
【0022】
酸無水物は、樹脂の溶剤と相溶しなければならない適当な溶剤、または水に溶
解させる。好ましくは、酸無水物を樹脂と同じ溶剤、たとえばジクロロメタンま
たはアセトンに溶解させる。The acid anhydride is dissolved in water, or a suitable solvent that must be compatible with the resin solvent. Preferably, the acid anhydride is dissolved in the same solvent as the resin, such as dichloromethane or acetone.
【0023】
酸無水物の目的は処理する非金属基質の静電引力を最大にすることである。酸
無水物はポリエステル樹脂との相溶性の点からも選ばれる。好ましい酸無水物は
、ジクロロメタン中で0.97の誘電損失を有する無水マレイン酸である。The purpose of the acid anhydride is to maximize the electrostatic attraction of the non-metallic substrate being treated. The acid anhydride is also selected from the viewpoint of compatibility with the polyester resin. The preferred acid anhydride is maleic anhydride, which has a dielectric loss of 0.97 in dichloromethane.
【0024】
酸無水物は組成物の、好ましくは1重量%から6重量%、より好ましくは1重
量%から4重量%の量で存在する。
組成物はスチレンポリマー、たとえばスチレンホモポリマー、コポリマーまた
はターポリマーを含むこともできる。The acid anhydride is preferably present in an amount of 1% to 6% by weight of the composition, more preferably 1% to 4% by weight. The composition can also include a styrene polymer, such as a styrene homopolymer, copolymer or terpolymer.
【0025】
したがって、スチレンポリマーはホモポリマー、たとえばポリスチレン、また
はスチレンアクリロニトリル、もしくはスチレンポリブタジエンのようなコポリ
マー、またはアクリロニトリルポリブタジエンスチレンのようなターポリマー、
またはこれらのブレンドであることができる。Thus, the styrene polymer is a homopolymer, such as polystyrene, or a copolymer such as styrene acrylonitrile, or styrene polybutadiene, or a terpolymer such as acrylonitrile polybutadiene styrene,
Or it can be a blend of these.
【0026】
スチレンポリマーの使用は、処理される物質に吸水抵抗性および浸水抵抗性を
加え、寸法変化、とくに乾燥時の収縮を最少限にし、硬度を向上させる。さらに
、スチレンポリマーは優れた耐薬品性を有する。The use of styrene polymers adds water and water resistance to the material being treated, minimizes dimensional changes, especially shrinkage during drying, and improves hardness. Moreover, styrene polymers have excellent chemical resistance.
【0027】
ホモポリマーのポリスチレン自体は非常に堅い。ポリスチレンは比重が1.0
5から1.07で、24時間浸漬後の水吸収率が0.04から0.06%である
。スチレンと他のモノマーとの共重合は靭性のような特定の性質を制限する。さ
らにまた、スチレンポリマーは、ポリエステル樹脂に用いられる溶剤と同一かま
たは相溶することができる適当な非水溶剤中に溶解させることができる。このよ
うに、スチレンポリマーはジクロロメタンもしくはアセトンに溶解させることが
できるか、またはポリエステル樹脂組成物と相溶させるために、トルエンに溶解
させることもできる。The homopolymer polystyrene itself is very stiff. The specific gravity of polystyrene is 1.0
It is 5 to 1.07 and the water absorption rate after immersion for 24 hours is 0.04 to 0.06%. Copolymerization of styrene with other monomers limits certain properties such as toughness. Furthermore, the styrene polymer can be dissolved in a suitable non-aqueous solvent that is the same as or compatible with the solvent used for the polyester resin. Thus, the styrene polymer can be dissolved in dichloromethane or acetone, or it can be dissolved in toluene to be compatible with the polyester resin composition.
【0028】
スチレンポリマーは、好ましくは組成物の1重量%から5重量%の量で存在す
る。
基質は適当に組成物で含浸させることができる。含浸法の例は、PCT/GB
97/00440(WO 97/32074)及びPCT/GB 97/01
464(WO 97/44591)で知ることができ、両者は本明細書に参照と
して組み入れてある。The styrene polymer is preferably present in an amount of 1% to 5% by weight of the composition. The substrate can be suitably impregnated with the composition. Examples of impregnation methods are PCT / GB 97/00440 (WO 97/32074) and PCT / GB 97/01.
464 (WO 97/44591), both of which are incorporated herein by reference.
【0029】
たとえば、含浸は基質を組成物で洗浄するかまたは基質を組成物中に浸漬する
ことによって行うことができる。
あるいはまた、基質を組成物で、さらに、たとえばスプレーのような適当な方
法で単純に表面塗装することができる。For example, impregnation can be done by washing the substrate with the composition or immersing the substrate in the composition. Alternatively, the substrate can be simply surface-coated with the composition and in a suitable manner, for example by spraying.
【0030】
工程(a)後に、必要ならば含浸または塗装した基質から過剰の組成物を除去
することができる。
工程(b)において、非水溶剤または水を除去する。これは、赤外誘導加熱の
ような電子誘導加熱、または他の適当な方法を用いて達成させることができる。
溶剤が非水溶剤であるときには、再捕集して、再使用することができる。After step (a), excess composition can be removed from the impregnated or painted substrate if desired. In step (b), the non-aqueous solvent or water is removed. This can be accomplished using electronic induction heating, such as infrared induction heating, or other suitable method.
When the solvent is a non-aqueous solvent, it can be recollected and reused.
【0031】
工程(b)後、かつ工程(c)前に、処理した基質を予熱するか、真空に曝露
するか、または予熱後に真空に曝露することができ、その目的は基質を脱ガスお
よび脱湿して、粉末塗装工程中のガスの発生を最少限にすることである。After step (b) and before step (c), the treated substrate can be preheated, exposed to vacuum or exposed to vacuum after preheating with the purpose of degassing and Dehumidification is to minimize gas evolution during the powder coating process.
【0032】
本発明の方法の工程(c)において、基質を静電界内または流動層中に入れ、
粉末塗料組成物をそれに適用する。
通常、粉末塗料組成物粒子が基質表面に付着するように、摩擦または静電的に
適当に帯電されたアプリケーターガンから、微粉状予備配合乾燥粉末塗料組成物
を、基質表面に向かって噴射する。Gema製Super Caronaのよう
な静電的に帯電されるガンが好ましい。基質表面に付着しない粉末塗料組成物粒
子は基質から落下して回収することができる。In step (c) of the method of the present invention, the substrate is placed in an electrostatic field or in a fluidized bed,
The powder coating composition is applied to it. Typically, a finely powdered pre-compounded dry powder coating composition is jetted toward the substrate surface from an applicator gun that is suitably tribo- or electrostatically charged so that the powder coating composition particles adhere to the substrate surface. Electrostatically charged guns such as Gema Super Carona are preferred. The powder coating composition particles that do not adhere to the substrate surface can fall off the substrate and be collected.
【0033】
適当な粉末の例は、光沢化、スエードまたは艶消し状、テックス仕上げ、ハン
マートン仕上げ、メタリック仕上げ、パール仕上げ、ちりめん状または多色の内
装用ポリウレタンもしくはエポキシポリエステルまたは外装用純ポリエステルで
ある。硬化温度は、感光性触媒を用いる紫外線の存在下では僅か100℃、また
は5から15分の硬化時間による140℃−185℃の範囲である。Examples of suitable powders are brightening, suede or matte, tex finish, hammerton finish, metallic finish, pearl finish, crepe-like or multicolor interior polyurethane or epoxy polyester or pure polyester exterior. is there. The curing temperature is in the range of only 100 ° C in the presence of UV light using a photocatalyst, or 140 ° C-185 ° C with a curing time of 5 to 15 minutes.
【0034】
本発明の方法の工程(d)では、基質を高温に曝露し、基質中又は基質上のポ
リエステル樹脂を重合および/または架橋させ、粉末塗料組成物を硬化させて粉
末塗膜を形成させる。In step (d) of the method of the present invention, the substrate is exposed to an elevated temperature to polymerize and / or crosslink the polyester resin in or on the substrate and cure the powder coating composition to form a powder coating. Let
【0035】
たとえば、基質温度を140℃を上回るレベル、さらに通常185℃まで上げ
るスペースヒーターに、特定長さの基質を通すことができる。
好ましい加熱形式は赤外線を用いる表面加熱である。For example, a specific length of substrate can be passed through a space heater that raises the substrate temperature to a level above 140 ° C., and typically to 185 ° C. A preferred heating type is surface heating using infrared rays.
【0036】
加熱工程の終了時に、粉末コーティング組成物を十分に硬化させる。
ここで本発明の実施例を示す。
基質の含浸または表面塗装用組成物の代表的配合物は下記の通りである:
アセトン 350
ナフテン酸コバルト促進NCS Ultraset 933 80
Triganox 29B50 2
無水マレイン酸 12
合計 444
(すべて重量部である)
特定長さの中密度ファイバーボードのような基質を上記組成物で含浸させた後
、過剰の組成物を除去する。At the end of the heating step, the powder coating composition is fully cured. Here, an embodiment of the present invention will be shown. A typical formulation for a substrate impregnating or surface coating composition is as follows: Acetone 350 Cobalt Naphthenate Promoted NCS Ultraset 933 80 Triganox 29B50 2 Maleic Anhydride 12 Total 444 (all parts by weight) Specific Length After impregnating a substrate such as medium density fiberboard with the above composition, excess composition is removed.
【0037】
その後加熱してアセトンを除去する。
その後、処理した基質に適当な粉末塗料組成物を粉末塗装して、ポリエステル
樹脂および粉末塗料を固化させ、さらに硬化させる。Thereafter, heating is performed to remove acetone. The treated substrate is then powder coated with a suitable powder coating composition to solidify and further cure the polyester resin and powder coating.
【0038】
この結果は、壁面または食器棚等の成形に用い得る、装飾粉末塗装を施した特
定長さの中密度ファイバーボードである。
本発明の方法によって製造することができる他の製品には屋根板、建築用成形
品、他の基質との積層用に用いられる材料等がある。The result is a medium length fiberboard with a specified length of decorative powder coating that can be used to mold walls or cupboards and the like. Other products that can be produced by the method of the present invention include roofing shingles, architectural moldings, materials used for lamination with other substrates, and the like.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) C09D 167/06 C09D 167/06 (81)指定国 EP(AT,BE,CH,CY, DE,DK,ES,FI,FR,GB,GR,IE,I T,LU,MC,NL,PT,SE),OA(BF,BJ ,CF,CG,CI,CM,GA,GN,GW,ML, MR,NE,SN,TD,TG),AP(GH,GM,K E,LS,MW,MZ,SD,SL,SZ,TZ,UG ,ZW),EA(AM,AZ,BY,KG,KZ,MD, RU,TJ,TM),AE,AG,AL,AM,AT, AU,AZ,BA,BB,BG,BR,BY,BZ,C A,CH,CN,CR,CU,CZ,DE,DK,DM ,DZ,EE,ES,FI,GB,GD,GE,GH, GM,HR,HU,ID,IL,IN,IS,JP,K E,KG,KP,KR,KZ,LC,LK,LR,LS ,LT,LU,LV,MA,MD,MG,MK,MN, MW,MX,MZ,NO,NZ,PL,PT,RO,R U,SD,SE,SG,SI,SK,SL,TJ,TM ,TR,TT,TZ,UA,UG,US,UZ,VN, YU,ZA,ZW Fターム(参考) 4D075 AA09 AB03 AB07 AB33 AE16 BB16X BB23Y BB24Y BB26Z BB56Y BB93Z CA02 CA03 CA18 CA32 CA34 CA38 CA44 DA06 DA25 DB12 DB24 DB25 DC02 DC38 EA02 EA07 EB12 EB14 EB33 EB35 EB38 EB56 EC07 EC30 EC37 EC54 4J038 CC032 DB001 DD001 DD181 DG001 JA42 KA03 PC04 PC08 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C09D 167/06 C09D 167/06 (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD) , RU, TJ, TM), AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, Z, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ , LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW F terms (reference) 4D075 AA09 AB03 AB07 AB33 AE16 BB16X BB23Y BB24Y BB26Z BB56Y BB93Z CA02 CA03 CA18 CA32 CA34 CA38 CA44 DA06 DA25 DB12 DB24 DB25 DC02 DC38 EA02 EA07 EB12 EB14 EB33 EB35 EB38 EB56 EC07 EC30 EC37 EC54 4J038 CC032 DB001 DD001 DD181 DG001 JA42 KA03 PC04 PC08
Claims (15)
さの繊維ボード、および1個のセメント製品からなる群から選ばれる請求項1記
載の方法。2. The method of claim 1, wherein the non-metallic substrate is selected from the group consisting of a specific length of lignocellulosic material, a specific length of fiberboard, and a cement product.
請求項1または2記載の方法。4. The method according to claim 1 or 2, which comprises the following step: (f) exposing the substrate to a vacuum after step (b) and before step (c).
よびアセトンから選ばれる請求項1ないし5のいずれか1つの項記載の方法。6. The method according to claim 1, wherein in step (a) (i), the non-aqueous solvent is selected from dichloromethane and acetone.
ら40重量%の量(15重量%、40重量%共に含む)の該ポリエステル樹脂を
含有する請求項1ないし6のいずれか1つの項記載の方法。7. The step (a) wherein the composition contains the polyester resin in an amount of from 15% to 40% by weight of the composition, including both 15% and 40% by weight. 7. The method according to any one of items 1 to 6.
から0.8重量%の量(0.2重量%、0.8重量%共に含む)の該潜伏性触媒
を含有する請求項7記載の方法。8. In step (a), the composition comprises 0.2% by weight of the composition.
8. The process of claim 7 which contains the latent catalyst in an amount of from 0.8 to 0.8% by weight, including both 0.2% and 0.8% by weight.
カルボン酸または無水トリカルボン酸を含む請求項1ないし8のいずれか1つの
項記載の方法。9. The method according to claim 1, wherein in step (a), the composition contains dicarboxylic anhydride or tricarboxylic anhydride dissolved in a solvent.
相溶する非水溶剤、及び水から選ばれる請求項9記載の方法。10. The method according to claim 9, wherein the solvent is selected from a non-aqueous solvent which is the same as or compatible with the non-aqueous solvent of the polyester resin, and water.
ら6重量%の量(1重量%、6重量%共に含む)の該無水ジカルボン酸または無
水トリカルボン酸を含有する請求項9または10記載の方法。11. In step (a), the composition comprises the dicarboxylic anhydride or tricarboxylic anhydride in an amount of from 1% to 6% by weight of the composition, including both 1% and 6% by weight. The method according to claim 9 or 10, which comprises:
ら4重量%の量(1重量%、4重量%共に含む)の無水マレイン酸を含有する請
求項11記載の方法。12. In step (a), the composition contains maleic anhydride in an amount of 1% to 4% by weight of the composition, including 1% by weight and 4% by weight. The method described.
レンポリマーを含む請求項1ないし12のいずれか1つの項記載の方法。13. The method according to any one of claims 1 to 12, wherein in step (a) the composition comprises a styrene polymer dissolved in a solvent.
ら5重量%の量(1重量%、5重量%共に含む)の該スチレンポリマーを含有す
る請求項13記載の方法。14. In step (a), the composition contains the styrene polymer in an amount of from 1% to 5% by weight of the composition (including 1% and 5% by weight). The method described.
テル樹脂を重合および/または架橋させるのに十分な時間の間に、140℃を上
回る高温に該基質を曝露し、そして該粉末塗料組成物を硬化させて、該粉末塗膜
を形成させる請求項1ないし14のいずれか1つの項記載の方法。15. In step (d), exposing the substrate to an elevated temperature above 140 ° C. for a time sufficient to polymerize and / or crosslink the polyester resin in or on the substrate, and The method according to any one of claims 1 to 14, wherein the powder coating composition is cured to form the powder coating film.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA996796 | 1999-10-28 | ||
ZA99/6796 | 1999-10-28 | ||
PCT/IB2000/001510 WO2001030927A2 (en) | 1999-10-28 | 2000-10-20 | Method of applying a powder coating to a non-metallic substrate |
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Publication Number | Publication Date |
---|---|
JP2003512922A true JP2003512922A (en) | 2003-04-08 |
Family
ID=25587965
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JP2001533913A Pending JP2003512922A (en) | 1999-10-28 | 2000-10-20 | How to apply powder coatings on non-metallic substrates |
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Country | Link |
---|---|
EP (1) | EP1230039A2 (en) |
JP (1) | JP2003512922A (en) |
CN (1) | CN1382074A (en) |
AU (1) | AU769055B2 (en) |
CA (1) | CA2388420A1 (en) |
WO (1) | WO2001030927A2 (en) |
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BR0114671A (en) | 2000-10-17 | 2003-10-07 | James Hardie Res Pty Ltd | Method and mechanism for reducing impurities in cellulose fibers for the manufacture of fiber reinforced cement composite materials |
AU2005302266B2 (en) * | 2004-11-02 | 2009-09-10 | Valspar Sourcing, Inc. | Cement-based and fiber cement products |
EP2010730A4 (en) | 2006-04-12 | 2013-07-17 | Hardie James Technology Ltd | A surface sealed reinforced building element |
CN101269366B (en) * | 2007-03-23 | 2010-05-26 | 欧利速精密工业股份有限公司 | Spray coating method for spray coating non-metal surface with hot melt viscose powder and spray coating device |
CN103031014B (en) * | 2012-12-12 | 2015-11-18 | 中国科学院过程工程研究所 | A kind of preparation method of non-conductive substrate powder paint coating |
FI128812B (en) * | 2018-01-23 | 2020-12-31 | Teknologian Tutkimuskeskus Vtt Oy | Coated wood veneer and method for treating wood veneer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2024659B (en) * | 1978-05-09 | 1982-09-02 | Armstrong T | Spray nozzle |
GB2024658A (en) * | 1978-07-07 | 1980-01-16 | Shaw J G | Coating of compressed board materials |
WO1997045591A1 (en) * | 1996-05-29 | 1997-12-04 | Windsor Technologies Limited | Method of applying a powder coating to a length of a lignocellulosic material |
-
2000
- 2000-10-20 WO PCT/IB2000/001510 patent/WO2001030927A2/en not_active Application Discontinuation
- 2000-10-20 CN CN00814810A patent/CN1382074A/en active Pending
- 2000-10-20 CA CA002388420A patent/CA2388420A1/en not_active Abandoned
- 2000-10-20 JP JP2001533913A patent/JP2003512922A/en active Pending
- 2000-10-20 AU AU78114/00A patent/AU769055B2/en not_active Ceased
- 2000-10-20 EP EP00968163A patent/EP1230039A2/en not_active Withdrawn
Also Published As
Publication number | Publication date |
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WO2001030927A2 (en) | 2001-05-03 |
CA2388420A1 (en) | 2001-05-03 |
AU7811400A (en) | 2001-05-08 |
CN1382074A (en) | 2002-11-27 |
AU769055B2 (en) | 2004-01-15 |
EP1230039A2 (en) | 2002-08-14 |
WO2001030927A3 (en) | 2001-10-25 |
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