WO2012097562A1 - 耐水颜料及其制备方法、用途 - Google Patents

耐水颜料及其制备方法、用途 Download PDF

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WO2012097562A1
WO2012097562A1 PCT/CN2011/075248 CN2011075248W WO2012097562A1 WO 2012097562 A1 WO2012097562 A1 WO 2012097562A1 CN 2011075248 W CN2011075248 W CN 2011075248W WO 2012097562 A1 WO2012097562 A1 WO 2012097562A1
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water
layer
resistant pigment
coating
mixture
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PCT/CN2011/075248
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English (en)
French (fr)
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付建生
龙芬
张军礼
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汕头市龙华珠光颜料有限公司
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Priority to US13/980,054 priority Critical patent/US20130295386A1/en
Priority to EP11856609.0A priority patent/EP2666831B1/en
Publication of WO2012097562A1 publication Critical patent/WO2012097562A1/zh

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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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/38Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/0078Pigments consisting of flaky, non-metallic substrates, characterised by a surface-region containing free metal
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/62Metallic pigments or fillers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/62Metallic pigments or fillers
    • C09C1/64Aluminium
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/66Copper alloys, e.g. bronze
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/20Particle morphology extending in two dimensions, e.g. plate-like
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991Coated

Definitions

  • the present invention relates to active metal-containing pigments, and more particularly to water-resistant active metal-containing pigments, methods for their preparation, and uses.
  • the aluminum powder pigment In order for aluminum powder pigments to be used in aqueous coatings and paints, the aluminum powder pigment must be post-treated, ie coated, that is, coated with one or more layers of inert compounds on the surface of the aluminum powder pigment, eg, Covering a dense layer of silicon dioxide, etc., such a coating is a "bag” type coating, which completely covers the surface of the aluminum powder pigment, such as placing the aluminum powder in a "bag”. It is completely isolated from water, preventing the surface of aluminum powder pigment particles from coming into contact with water, preventing aluminum from undergoing redox reaction and making it suitable for waterborne coatings and paints.
  • a "bag” type coating which completely covers the surface of the aluminum powder pigment, such as placing the aluminum powder in a "bag”. It is completely isolated from water, preventing the surface of aluminum powder pigment particles from coming into contact with water, preventing aluminum from undergoing redox reaction and making it suitable for waterborne coatings and paints.
  • specialty pigments have "exposed" metal aluminum end faces for specific optical or other effects, such as composite pigments having a "sandwich” structure, one or more layers of metal aluminum in the middle of the pigment particles.
  • This layer can be very thin, possibly only a few tens of nanometers thick. Due to quantum effects, they can undergo very intense redox reactions when in contact with water, generating a large amount of hydrogen, which is very dangerous, such as during transportation and storage.
  • it is often difficult to use because of the safety problems caused by hydrogen production, or the quality problems of coating and ink printing.
  • This "sandwich" structure of special effect pigments has special properties due to process preparation or because of the necessity of having such a structure, so that a "pocket” multilayer structure similar to pearlescent pigments cannot be used.
  • a water-resistant pigment the pigment has an original sheet, the original sheet is a layered structure of at least three layers, and the original sheet includes a top layer and a middle portion.
  • Layer group and bottom layer said intermediate layer The group has at least one layer of a reactive metal layer, and the water-resistant pigment has a coating layer only on the side of the original sheet.
  • the water-resistant pigment has a coating layer only on the side of the active metal layer.
  • the water-resistant pigment of the present invention adopts a coating form, that is, an annular coating, which only coats the metal end face of the metal layer in the "sandwich” structured pigment, and prevents the water molecules from contacting the end face of the metal layer with water molecules. Redox occurs, no hydrogen is produced; and it does not affect the optical properties of specialty pigments in the "sandwich” structure.
  • the original sheet of the present invention can be made of Bright Siver pigment (manufactured by JDSU, USA, SpectraFlair®).
  • the active metal layer of the water-resistant pigment is an aluminum layer or a copper layer.
  • the coating layer is a fatty acid, a fatty acid salt compound, an amino acid, an amino acid salt compound, a phosphate ester, a phosphate salt compound, a polybasic weak acid, or a polybasic weak acid salt. a compound or a silicone compound.
  • the coating layer is a sulfonate, an alkylsulfonate, a polysulfonic acid compound, a phosphoric acid, a phosphate or a polyphosphoric acid compound.
  • the coating layer is tin chloride, stannous chloride, zirconium oxychloride, sodium silicate, sodium aluminate, aluminum chloride, cerium nitrate, chlorination Calcium or magnesium chloride.
  • the present invention also provides a method of preparing a water resistant pigment, comprising the steps of:
  • step (3) filtering/drying the reaction product of step (3) to obtain a water-resistant pigment
  • the original sheet is a layered structure of at least three layers, the original sheet comprising a top layer, an intermediate layer group and a bottom layer, and the intermediate layer group has at least one layer of a living metal layer.
  • the active metal layer is an aluminum layer or a copper layer.
  • the method for preparing a water-resistant pigment of the present invention is to select and adsorb only a metal end face of a metal layer of a "sandwich" structure special pigment by reacting a compound which selectively adsorbs or reacts only a metal layer of aluminum or copper.
  • the original sheet of the present invention may be a Bright Siver pigment (manufactured by JDSU, USA, Spectra Flair®).
  • the coating agent is a fatty acid, a fatty acid salt compound, an amino acid, an amino acid salt compound, an alkyl sulfonate, and a phosphoric acid.
  • the coating layer is a sulfonate, a polysulfonic acid compound, a phosphoric acid, a phosphate or a polyphosphoric acid compound.
  • the coating agent is tin chloride, stannous chloride, zirconium oxychloride, sodium silicate, sodium aluminate, aluminum chloride, barium nitrate. , calcium chloride or magnesium chloride.
  • the present invention also provides the use of water resistant pigments in the preparation of aqueous coatings, paints or inks.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a three-layered layered structure, and the original sheet includes a top layer, an intermediate layer and a bottom layer, and the intermediate layer is an aluminum layer.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a five-layered layered structure, and the original sheet includes a top layer, an intermediate layer group and a bottom layer, and the intermediate layer group has an aluminum layer and a copper layer.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a three-layered layered structure, and the original sheet includes a top layer, an intermediate layer group and a bottom layer, and the intermediate layer is a copper layer.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a five-layered layered structure, and the original sheet includes a top layer, an intermediate layer group and a bottom layer, and the intermediate layer group has two layers of aluminum layers.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original film is Bright Siver Pigment (produced by JDSU, USA, SpectraFlair®).
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original film is Bright Siver pigment (produced by JDSU, USA, SpectraFlair®).
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a three-layered layered structure, and the original sheet includes a top layer, an intermediate layer and a bottom layer, and the intermediate layer is an aluminum layer.
  • a method of preparing a water resistant pigment comprising the steps of:
  • the original sheet is a five-layered layered structure, and the original sheet includes a top layer, an intermediate layer group and a bottom layer, and the intermediate layer group has two layers of aluminum layers.
  • the untreated original piece was used as a control sample in the comparative example.
  • the water-resistant pigment obtained by the method for producing a water-resistant pigment of the present invention forms a protective layer only on the side of the pigment.
  • the untreated original piece was used as a control sample in the comparative example.
  • the water-resistant water-resistant pigment has better water resistance than the untreated pigment.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

耐水颜料及其制备方法、 用途 技术领域
[0001] 本发明涉及含活泼金属的颜料, 尤其涉及耐水的含活泼金属颜料及其制备方法、 用 途。
背景技术
[0002] 众所周知, 金属铝与水能发生氧化还原反应, 在铝的表面生成氧化铝薄膜, 同时生 成氢气。 由于铝粉颜料具有很大的比表面积, 因此它用于水性涂料时, 会发生剧烈地反应, 放出大量的氢气, 使得未加包覆处理的铝粉颜料不能很好的用于水性涂料及油墨。
[0003] 为了使铝粉颜料能用于水性涂料和油漆, 必须对铝粉颜料进行后处理, 即包覆处理, 也就是在铝粉颜料表面包覆一层或多层惰性化合物, 如, 包覆致密的二氧化硅层等, 此类包 覆是 "袋"式包覆, 是将二氧化硅完全包覆铝粉颜料的所有表面, 就如将铝粉放入一个 "袋 子"一样, 从而完全与水隔离, 阻止了铝粉颜料粒子表面与水接触, 防止了铝发生氧化还原 反应, 使之能用于水性涂料和油漆。
[0004] 但一些特种颜料为了一些特定的光学或其它效果, 使之存在 "裸露" 的金属铝端面, 如具有 "三明治"结构的复合颜料, 此颜料粒子中间一层或多层金属铝层, 此层可以是非常 薄, 可能只有几十纳米的厚度, 由于量子效应, 它们与水接触时能发生非常剧烈的氧化还原 反应, 产生大量的氢气, 从而存在很大危险, 如在运输和储存过程, 在使用过程中, 特别是 用于水性涂料、 油漆和油墨时, 往往因为氢气的产生造成操作的安全问题, 或影响涂层和油 墨印刷的质量问题而不能很好的使用。
[0005] 这种 "三明治" 结构的特种效应颜料由于工艺制备方面的原因, 或因为必须具备这 种结构才具有其特殊性能, 因而不能采用类似于珠光颜料的 "袋式"多层结构。
[0006] 若对这种 "三明治" 结构的特种颜料采用 "袋式"包覆, 如用二氧化硅包覆的话, 则会由于材料的折射率不同, 造成光学效果的变化, 甚至于变成另外一种颜料而失去特种颜 料原有的效果。
发明内容
[0007] 本发明的一个发明目的在于提供一种耐水的、 含活泼金属的 "三明治" 结构的特种 效应颜料。
[0008] 本发明的目的可以通过以下技术措施实现: 一种耐水颜料, 所述的颜料具有原片, 所述的原片为至少三层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层 组具有至少一层的活泼金属层, 所述的耐水颜料仅在所述的原片的侧边具有包覆层。 作为本 发明耐水颜料的优选实施方式, 所述的耐水颜料仅在所述的活泼金属层的侧边具有包覆层。
[0009] 本发明的耐水颜料采用一种包覆形式, 即环状包覆, 只对 "三明治" 结构颜料中的 金属层金属端面进行包覆, 阻止水分子与此金属层端面与水分子接触而发生氧化还原, 不产 生氢气; 同时也不会影响 "三明治" 结构的特种颜料的光学特性。 本发明的原片可以采用 Bright Siver颜料 (美国 JDSU公司生产, SpectraFlair®)。
[0010] 作为本发明耐水颜料的优选实施方式, 所述的耐水颜料的活泼金属层为铝层或铜层。
[0011] 作为本发明耐水颜料的优选实施方式, 所述的包覆层为脂肪酸、 脂肪酸盐类化合物、 氨基酸、 氨基酸盐类化合物、 磷酸酯、 磷酸酯盐类化合物、 多元弱酸、 多元弱酸盐类化合物 或有机硅类化合物。 作为本发明耐水颜料的更优选实施方式, 所述的包覆层为磺酸盐、 烷基 磺酸盐、 多聚磺酸类化合物、 磷酸、 磷酸盐或多聚磷酸类化合物。
[0012] 作为本发明耐水颜料的优选实施方式, 所述的包覆层为氯化锡、 氯化亚锡、 氯氧化 锆、 硅酸钠、 铝酸钠、 氯化铝、 硝酸铋、 氯化钙或氯化镁。
[0013] 本发明还提供一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 70 100体积的水与 5~40体积的醇或醚混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 5%~15%加入包覆剂, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 25~45°C, 并调节 pH值为 7〜9, 按混合液 B重量的 1%〜5%加入 原片, 反应 0.5 6小时;
(4) 将步骤 (3 ) 的反应产物过滤 /和干燥, 即得到耐水颜料;
所述的原片为至少三层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层 组具有至少一层的活泼金属层。 所述的活泼金属层为铝层或铜层。
[0014] 本发明制备耐水颜料的方法就是通过选择只对金属层铝或铜有选择吸附或反应的化 合物, 它们只吸附在 "三明治"结构特种颜料的金属层的金属端面, 并与其进行反应, 从而 形成环状包覆结构, 尽最大可能的保护水分子不与其金属层的金属端面相接触, 避免与水分 子的氧化还原反应, 避免产生氢气, 由于它不与片状 "三明治"颜料的顶层和底层反应, 因 此这种包覆基本不影响颜料的光学特性, 并且在水中具有一定的分散性能, 从而可使这种经 "环状"包覆的特种颜料可以用于水性涂料、 油漆和油墨。
[0015] 本发明的原片可以采用 Bright Siver颜料 (美国 JDSU公司生产, SpectraFlair® )。
[0016] 作为本发明制备耐水颜料的方法的优选实施方式, 所述的包覆剂所述的包覆剂为脂 肪酸、 脂肪酸盐类化合物、 氨基酸、 氨基酸盐类化合物、 烷基磺酸盐、 磷酸酯、 磷酸酯盐类 化合物、 多元弱酸、 多元弱酸盐类化合物或有机硅类化合物。 作为本发明制备耐水颜料的方 法的更优选实施方式, 所述的包覆层为磺酸盐、 多聚磺酸类化合物、 磷酸、 磷酸盐或多聚磷 酸类化合物。
[0017] 作为本发明制备耐水颜料的方法的优选实施方式, 所述的包覆剂为氯化锡、 氯化亚 锡、 氯氧化锆、 硅酸钠、 铝酸钠、 氯化铝、 硝酸铋、 氯化钙或氯化镁。
[0018] 本发明还提供耐水颜料在制备水性涂料、 油漆或油墨的用途。
具体实施方式
[0019] 为使本发明更加容易理解, 下面将进一步阐述本发明的具体实施例。
[0020] 实施例 1
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 70体积的水与 5体积的乙二醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 5%加入包覆剂硅酸钠, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 25°C, 并调节 pH值为 7, 按混合液 B重量的 1%加入原片, 反应 0.5小时;
(4) 将步骤 (3 ) 的反应产物过滤, 即得到耐水颜料;
所述的原片为三层的层状结构, 所述的原片包括顶层、 中间层和底层, 所述的中间层为铝层。
[0021] 实施例 2
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 100体积的水与 40体积的异戊醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 15%加入包覆剂十二烷基磺酸钠, 并使包覆剂完全溶解, 得到混合 液 B;
(3 ) 将混合液 B升温至 45°C, 并调节 pH值为 9, 按混合液 B重量的 5%加入原片, 反应 2 小时;
(4) 将步骤 (3 ) 的反应产物过滤, 即得到耐水颜料;
所述的原片为五层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层组具 有一层铝层和一层铜层。
[0022] 实施例 3
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 80体积的水与 20体积的乙醚混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 10%加入包覆剂硅烷, 并使包覆剂完全溶解, 得到混合液 B; (3 ) 将混合液 B升温至 30°C, 并调节 pH值为 8, 按混合液 B重量的 2%加入原片, 反应 1 小时;
(4) 将步骤 (3 ) 的反应产物过滤, 即得到耐水颜料;
所述的原片为三层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层为铜 层。
[0023] 实施例 4
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 90体积的水与 20体积的丙二醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 8%加入包覆剂磷酸二氢钠, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 30°C, 并调节 pH值为 7.5, 按混合液 B重量的 3%加入原片, 反应 1.5小时;
(4) 将步骤 (3 ) 的反应产物过滤, 即得到耐水颜料;
所述的原片为五层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层组具 有两层的铝层。
[0024] 实施例 5
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 85体积的水与 38体积的十六烷基二醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 12%加入包覆剂谷氨酸钠, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 25°C, 并调节 pH值为 8.5, 按混合液 B重量的 4%加入原片, 反应 4小时;
(4) 将步骤 (3 ) 的反应产物过滤, 干燥, 即得到耐水颜料;
所述的原片为 Bright Siver颜料 (美国 JDSU公司生产, SpectraFlair®)。
[0025] 实施例 6
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 89体积的水与 30体积的正十六醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 6%加入包覆剂卵磷脂, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 35°C, 并调节 pH值为 8.3, 按混合液 B重量的 5%加入原片, 反应 1小时;
(4) 将步骤 (3 ) 的反应产物过滤、 干燥, 即得到耐水颜料;
所述的原片为 Bright Siver颜料 (美国 JDSU公司生产, SpectraFlair®)。 [0026] 实施例 7
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 90体积的水与 40体积的甘油混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 15%加入包覆剂氯化亚锡, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 45°C, 并调节 pH值为 9, 按混合液 B重量的 4.5%加入原片, 反应 5小时;
(4) 将步骤 (3 ) 的反应产物过滤、 干燥, 即得到耐水颜料;
所述的原片为三层的层状结构, 所述的原片包括顶层、 中间层和底层, 所述的中间层为铝层。
[0027] 实施例 8
一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 70体积的水与 5体积的辛醇混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 5%加入包覆剂三聚磷酸钠, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 25~45°C, 并调节 pH值为 7〜9, 按混合液 B重量的 2.5%加入原片, 反应 6小时;
(4) 将步骤 (3 ) 的反应产物过滤、 干燥, 即得到耐水颜料;
所述的原片为五层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层组具 有两层的铝层。
[0028] 实施例 9
将实施例 1-8 制得的耐水颜料的顶层、 底层和侧边进行电镜扫描 (SEM ) 和能谱分析
(EDS), 得到下述结果。
[0029] 表 1
Figure imgf000007_0001
对比例采用未处理的原片作为对照样品。
[0030] 由上表可知, 采用本发明耐水颜料的制备方法制得的耐水颜料, 仅在颜料的侧边形 成保护层。
[0031] 实施例 10
将实施例 1-8的耐水颜料各 10g置于足量的含水率 10%的水性涂料中, 分别测量浸泡 25小 时、 50小时、 100小时所释放的氢气体积, 结果如下表 2。
[0032] 表 2
Figure imgf000008_0001
对比例采用未处理的原片作为对照样品。
[0033] 由上表可知, 经耐水处理的耐水颜料, 较未经处理的颜料, 具有良好的耐水性能。
[0034] 最后所应当说明的是, 以上实施例仅用以说明本发明的技术方案而非对本发明保护 范围的限制, 尽管参照较佳实施例对本发明作了详细说明, 本领域的普通技术人员应当理解, 可以对本发明的技术方案进行修改或者等同替换, 而不脱离本发明技术方案的实质和范围。

Claims

1. 一种耐水颜料, 所述的颜料具有原片, 所述的原片为至少三层的层状结构, 所述的原片 包括顶层、 中间层组和底层, 所述的中间层组具有至少一层的活泼金属层, 其特征在于, 所 述的耐水颜料仅在所述的原片的侧边具有包覆层。
2. 根据权利要求 1 所述的耐水颜料, 其特征在于, 所述的耐水颜料仅在所述的活泼金属层 的侧边具有包覆层。
3. 根据权利要求 1或 2所述的耐水颜料, 其特征在于, 所述的活泼金属层为铝层或铜层。
4. 根据权利要求 1 或 2所述的耐水颜料, 其特征在于, 所述的包覆层为脂肪酸、 脂肪酸盐 类化合物、 氨基酸、 氨基酸盐类化合物、 磷酸酯、 磷酸酯盐类化合物、 烷基磺酸盐、 多元弱 酸、 多元弱酸盐类化合物或有机硅类化合物。
5. 根据权利要求 1 或 2所述的耐水颜料, 其特征在于, 所述的包覆层为氯化锡、 氯化亚锡、 氯氧化锆、 硅酸钠、 铝酸钠、 氯化铝、 硝酸铋、 氯化钙或氯化镁。
6. 根据权利要求 4 所述的耐水颜料, 其特征在于, 所述的包覆层为磺酸盐、 磷酸、 磷酸盐 或多聚磷酸类化合物。
7. 一种制备耐水颜料的方法, 其包括如下步骤:
( 1 ) 将 70〜100体积的水与 5〜40体积的醇或醚混合均匀, 得到混合液 A;
(2) 按混合液 A重量的 5%〜15%加入包覆剂, 并使包覆剂完全溶解, 得到混合液 B;
(3 ) 将混合液 B升温至 25〜45°C, 并调节 pH值为 7〜9, 按混合液 B重量的 1%〜5%加入 原片, 反应 0.5 6小时;
(4) 将步骤 (3 ) 的反应产物过滤 /和干燥, 即得到耐水颜料;
所述的原片为至少三层的层状结构, 所述的原片包括顶层、 中间层组和底层, 所述的中间层 组具有至少一层的活泼金属层。
8. 根据权利要求 7 所述的制备耐水颜料的方法, 其特征在于, 所述的包覆剂所述的包覆剂 为脂肪酸、 脂肪酸盐类化合物、 氨基酸、 氨基酸盐类化合物、 磷酸酯、 磷酸酯盐类化合物、 烷基磺酸盐、 多元弱酸、 多元弱酸盐类化合物或有机硅类化合物。
9. 根据权利要求 7 所述的制备耐水颜料的方法, 其特征在于, 所述的包覆剂为氯化锡、 氯 化亚锡、 氯氧化锆、 硅酸钠、 铝酸钠、 氯化铝、 硝酸铋、 氯化钙或氯化镁。
10. 根据权利要求 8所述的制备耐水颜料的方法, 其特征在于, 所述的包覆层为磺酸盐、 多 聚磺酸类化合物、 磷酸、 磷酸盐或多聚磷酸类化合物。
11. 根据权利要求 7所述的制备耐水颜料的方法, 其特征在于, 所述的活泼金属层为铝层或 铜层。
12. 如权利要求 1所述的耐水颜料在制备水性涂料、 油性涂料、 油漆或油墨的用途。
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