200812910 九、發明說明： 貴 【發明所屬之技術領域】 ' 本發明係關於礦物阻燃劑。說的更明確一點 係關於新穎的氫氧化鎂阻燃劑、其製造方法及其戶 【先前技術】 現在已存在許多氫氧化鎂的製造方法。舉例: 傳統的鎂製程中，已知可藉由將氯化鎂溶液噴霧: 得的氧化鎂予以水合來製造氫氧化鎂，例如可參 ® 利5,286,285號和歐洲專利EP 04278 1 7。其它已知 如鐵銹、海水或白雲石，可以和鹼源（如石灰或· 反應，以形成氫氧化鎂粒子，也已知可將Mg鹽 ，以形成氫氧化鎂晶體。 將氫氧化鎂應用在工業上已有一段時間。氫 被用在許多不同的用途上，包括在醫藥領域上用 酸劑，在工業應用上用來做爲阻燃劑。在阻燃劑 氫氧化鎂係用於如塑膠之類的合成樹脂中或者是 纜中，以提供阻燃的性質。含有氫氧化鎂之合成 煉功能及黏度係與氫氧化鎂連接的關鍵特性。在 工業中，對於更好的混煉功能及黏度之需求性愈 其顯而易見的理由是可在混煉和押出成型的過程 的生產量、更容易流入模具中等。基於這種需求 對於更高品質的氫氧化鎂粒子和其製造方法的需 著提高。 ，本發明 目途。 來說*在 唼燒所獲 考美國專 的Mg源 i氧化鈉） 和氨反應 氧化鎂已 來做爲制 領域上， 線路和電 樹脂的混 合成樹脂 來愈高， 中有更高 的增加， 求也就跟 200812910 【發明內容】 1; 在一個實施實例中，本發明係關於一種方法，其包括： 將含有氫氧化鎂粒子的濾餅硏磨乾燥而製得經硏磨乾 燥的氫氧化鎂粒子；以及 將該種經硏磨乾燥的氫氧化鎂粒子去黏聚而製得氫氧 化鎂產物粒子， 其中濾餅含有約35至約99重量％的氫氧化鎂粒子，其 係以濾餅的總重量爲基準，並且其中氫氧化鎂產物粒子所 # 具有的中位孔隙半徑（"no")係介於約0.01至約〇.5μιη的範 圍內。 在另一個實施實例中，本發明係關於氫氧化鎂粒子， 其具有： 小於約3.5μιη的d5〇 BET比表面積爲約1至約15之間，以及 中位孔隙半徑介於約0.01至約0.5 μιη的範圍內， 其中該氫氧化鎂粒子係將含有約35至約99重量％氫氧 ^ 化鎂（其係以濾餅的總重量爲基準）的濾餅硏磨乾燥而製 得經硏磨乾燥的氫氧化鎂粒子並且將該種經硏磨乾燥的氫 氧化鎂粒子去黏聚而生成氫氧化鎂產物粒子。 【實施方式】 本發明方法包括將含有約35至約99重量％氫氧化鎂粒 子（其係以濾餅的總重量爲基準）的濾餅硏磨乾燥而製得 經硏磨乾燥的氫氧化鎂粒子。接著將經硏磨乾燥的氫氧化 鎂粒子施以去黏聚處理，因而生成了本文中所述的氫氧化 -6- 200812910 鎂產物粒子。在一些實施實例中，濾餅中含有約35至約80 重量％的氫氧化鎂，更佳係介於約40至約70重量％的範圍 內，其係以濾餅的總重量爲基準。濾餅的其餘成分通常爲 水’較佳爲脫鹽水。在一些實施實例中，濾餅也可以含有 分散劑。分散劑的非限制性實例包括聚丙烯酸酯、有機酸 、萘磺酸鹽/甲醛縮合物、脂肪醇-聚乙二醇-醚、聚丙燒_ 環氧乙烷、聚乙二醇-酯、聚胺-環氧乙烷、磷酸鹽、聚乙 烯醇。. 濾餅可由任何一種過去用來製造氫氧化鎂粒子的方法 來獲得。因此，也應注意到，在某些實施實例中，濾餅可 含有一般在氫氧化鎂製法所得之濾餅中常發現的雜質。在 —個舉例的實施實例中，濾餅係由包括將水加至氧化鎂（ 較佳係由噴霧焙燒氯化鎂溶液而得）中的方法所獲得，以 形成氧化鎂水懸浮液。此懸浮液通常包含約1至約8 5重量 %的氧化錢，其係以懸浮液的總重量爲基準。然而，氧化錶 的濃度可以在上述範圍之內變動。接著在溫度介於約5CTC 到約1 00°C且持續攪拌的情況之下，讓水和氧化鎂懸浮液 反應，因而獲得包含氫氧化鎂粒子和水的混合物。接著再 將此混合物予以過濾而獲得本發明，中所使用的濾餅。可將 濾餅直接經硏磨乾燥，或以脫鹽水沖洗一次，或者是在一 些實施實例中，沖洗一次以上，然後再依本發明予以經硏 磨乾燥。 硏磨乾燥係指將濾餅在硏磨乾燥單元中以紊流熱空氣 氣流予以乾燥。硏磨乾燥單元包含一個轉子，其牢牢安裝 200812910 在以高圓周速度轉動的固體軸上。隨著高空氣流通量的旋 轉移動，將流通的熱空氣轉化成極快速的空氣渦漩，其將 ^ 被乾燥的濾餅捲起，使之加速，並且分散以及乾燥濾餅， 而生成具有比初始濾餅之氫氧化鎂粒子更大表面積（以前 面所述的BET法來決定）的經硏磨氫氧化鎂粒子。在完全 乾燥之後，氫氧化鎂粒子隨著紊流空氣輸送至磨粉機之外 ，並且利用傳統的過濾系統將氫氧化鎂粒子由熱空氣和蒸 氣中分離出來。 # 用來乾燥濾餅的熱空氣通過量通常爲大於約 3,000200812910 IX. Description of the invention: expensive [Technical field to which the invention pertains] ' The present invention relates to a mineral flame retardant. More specifically, it relates to a novel magnesium hydroxide flame retardant, a method for producing the same, and a household thereof. [Prior Art] Many methods for producing magnesium hydroxide are now available. For example: In a conventional magnesium process, it is known to produce magnesium hydroxide by spraying a magnesium chloride solution: the obtained magnesium oxide is hydrated, for example, Ref. No. 5,286,285 and European Patent EP 04278 1 7. Others known as rust, seawater or dolomite may be reacted with an alkali source such as lime or to form magnesium hydroxide particles, also known as Mg salts, to form magnesium hydroxide crystals. It has been in the industry for a while. Hydrogen is used in many different applications, including acid in the medical field and as a flame retardant in industrial applications. In the flame retardant magnesium hydroxide is used in plastics. Such synthetic resins are either in the cable to provide flame retardant properties. The synthetic properties of magnesium hydroxide and the key properties of the viscosity are linked to magnesium hydroxide. In the industry, for better mixing and The more obvious reason for the demand for viscosity is that it can be produced in the process of mixing and extrusion molding, and it is easier to flow into the mold. Based on this demand, the demand for higher quality magnesium hydroxide particles and their manufacturing methods is improved. In view of the present invention, it is said that * in the field of smoldering, the United States-specific Mg source i-sodium oxide) and ammonia-reactive magnesium oxide have been used as the field of manufacture, and the combination of the line and the electric resin is made into a resin. There is a higher increase in high and medium, and it is also in accordance with 200812910. [Invention] In one embodiment, the present invention relates to a method comprising: honing and drying a filter cake containing magnesium hydroxide particles. And pulverizing the dried magnesium hydroxide particles; and degumming the honed and dried magnesium hydroxide particles to obtain magnesium hydroxide product particles, wherein the filter cake contains from about 35 to about 99% by weight of hydroxide The magnesium particles are based on the total weight of the filter cake, and wherein the magnesium hydroxide product particles have a median pore radius ("no") ranging from about 0.01 to about 0.5 μm. In another embodiment, the present invention is directed to magnesium hydroxide particles having: a d5 〇 BET specific surface area of less than about 3.5 μηη between about 1 and about 15, and a median pore radius of between about 0.01 and about 0.5 Within the range of μιη, wherein the magnesium hydroxide particles are honed and dried by a filter cake containing from about 35 to about 99% by weight of magnesium hydroxide (based on the total weight of the filter cake) The dried magnesium hydroxide particles and the honed and dried magnesium hydroxide particles are deagglomerated to form magnesium hydroxide product particles. [Embodiment] The method of the present invention comprises honing and drying a filter cake containing about 35 to about 99% by weight of magnesium hydroxide particles based on the total weight of the filter cake to obtain honed and dried magnesium hydroxide. particle. The honed and dried magnesium hydroxide particles are then subjected to deagglomeration treatment, thereby producing the -6-200812910 magnesium product particles described herein. In some embodiments, the filter cake contains from about 35 to about 80 weight percent magnesium hydroxide, more preferably from about 40 to about 70 weight percent, based on the total weight of the filter cake. The remainder of the filter cake is typically water', preferably desalinated. In some embodiments, the filter cake may also contain a dispersing agent. Non-limiting examples of dispersing agents include polyacrylates, organic acids, naphthalene sulfonate/formaldehyde condensates, fatty alcohols-polyethylene glycol-ethers, polypropylenes-oxirane, polyethylene glycol-esters, poly-polymers Amine-ethylene oxide, phosphate, polyvinyl alcohol. The filter cake can be obtained by any method used in the past to produce magnesium hydroxide particles. Accordingly, it should also be noted that in certain embodiments, the filter cake may contain impurities commonly found in filter cakes obtained by the magnesium hydroxide process. In an exemplary embodiment, the filter cake is obtained by a process comprising adding water to magnesium oxide, preferably by spray calcining a magnesium chloride solution, to form an aqueous suspension of magnesium oxide. This suspension typically contains from about 1 to about 85 percent by weight of oxidized money, based on the total weight of the suspension. However, the concentration of the oxidation table can be varied within the above range. The water and the magnesium oxide suspension are then allowed to react at a temperature of from about 5 CTC to about 100 ° C with continuous stirring, thereby obtaining a mixture comprising magnesium hydroxide particles and water. This mixture is then filtered to obtain the filter cake used in the present invention. The filter cake may be directly honed or rinsed once with demineralized water or, in some embodiments, rinsed more than once and then honed and dried according to the present invention. Honing drying means drying the filter cake in a honing drying unit with a turbulent hot air stream. The honing and drying unit consists of a rotor that is securely mounted on a solid shaft that rotates at a high peripheral speed. With the rotational movement of high air flux, the circulating hot air is converted into a very fast air vortex, which winds up the dried filter cake, accelerates it, and disperses and dries the filter cake to produce a ratio The magnesium hydroxide particles of the initial filter cake have a larger surface area (determined by the BET method described above) of the honed magnesium hydroxide particles. After being completely dried, the magnesium hydroxide particles are transported to the outside of the mill with turbulent air, and the magnesium hydroxide particles are separated from the hot air and the vapor by a conventional filtration system. # The hot air throughput used to dry the filter cake is usually greater than about 3,000
Bm3/h，較佳爲大於約 5,000 Bm3/h，更佳爲約3,000 Bm3/h 至約40,00 0 Bm3/h之間，最佳爲約5,000 Bm3/h至約 30,000 Bm3/h之間。 爲了達到如此高的流通量，硏磨乾燥單元的轉子具有 大於約40公尺/秒的圓周速度，較佳是大於約60公尺/秒， 更佳是大於約70公尺/秒，並且最佳是介於約70公尺/秒至 1 40公尺/秒的範圍內。馬達的高轉速及熱空氣的高流通量 ^ 會使得熱空氣氣流的雷諾數大於約3,000。 用來乾燥濾餅之熱空氣氣流的溫度一般係大於約 15 0°C，較佳係大於約270°C。在一個更佳的實施實例中， 熱空氣氣流的溫度係介於約 150°C至約550°C的範圍內， 最佳係介於約 270°C至約500°C的範圍內。Bm3/h, preferably greater than about 5,000 Bm3/h, more preferably from about 3,000 Bm3/h to about 40,00 0 Bm3/h, most preferably from about 5,000 Bm3/h to about 30,000 Bm3/h. . In order to achieve such high throughput, the rotor of the honing drying unit has a peripheral speed greater than about 40 meters per second, preferably greater than about 60 meters per second, more preferably greater than about 70 meters per second, and most Preferably, it is in the range of about 70 meters per second to 140 meters per second. The high speed of the motor and the high flux of hot air ^ will cause the Reynolds number of the hot air stream to be greater than about 3,000. The temperature of the hot air stream used to dry the filter cake is typically greater than about 150 ° C, preferably greater than about 270 ° C. In a more preferred embodiment, the temperature of the hot air stream is in the range of from about 150 ° C to about 550 ° C, preferably in the range of from about 270 ° C to about 500 ° C.
如前所述，濾餅的硏磨乾燥可形成具有比初始濾餅之 氫氧化鎂粒子更大表面積（以前面所述的BET法來決定） 的經硏磨氫氧化鎂粒子。通常，經硏磨氫氧化鎂粒子的BET 200812910 比濾餅中之氫氧化鎂粒子的bet要高約10%。經硏磨氫氧 > 化鎂粒子的BET較好是比濾餅中之氫氧化鎂粒子的8£丁要 ^ 高約10%至約40%。經硏磨氫氧化鎂粒子的BET更好是比 濾餅中之氫氧化鎂粒子的BET要高約10%至約25%。 所製得的經硏磨乾燥氫氧化鎂粒子可以直接使用在許 多應用上。然而，在一些實施實例中，這些經硏磨乾燥的 氫氧化鎂粒子會被進一步加工，以減少（在某些實施例中是 消除）經硏磨乾燥的氫氧化鎂粒子中的黏聚物。黏聚物常 • 見於氫氧化鎂粒子製程中，對些一些應用而言，它們的存 在確實會對於在樹脂中氫氧化鎂的功能帶來不利的影響。 因此，對於氫氧化鎂的生產者而言，非常希望能減少黏聚 物，較佳是能夠消除黏聚物。 在實施本發明時，可藉著對經硏磨乾燥之氫氧化鎂粒 子施以進一步的去黏聚加工步驟而降低存在於經硏磨乾燥 之氫氧化鎂粒子中的黏聚物數目或是黏聚的程度。所謂的 去黏聚係指對經硏磨乾燥的氫氧化鎂粒子施以進一步的處 ® 理，其中存在於經硏磨乾燥之氫氧化鎂粒子中的黏聚物數 目或是黏聚的程度會降低（亦即存在於經硏磨乾燥之氫氧 化鎂粒子中的黏聚物數目會比存在於氫氧化鎂產物粒子中 的黏聚物數目爲多），在某些實施實例中，會在僅少許減少 經硏磨乾燥之氫氧化鎂粒子大小的情況下，實質上去除黏 聚物。所謂的”少量縮減粒徑”係指氫氧化鎂產物粒子的d5〇 大於或等於經硏磨乾燥之氫氧化鎂粒子d5。的90%。經硏 磨乾燥之ATH的其它性質與經硏磨乾燥ATH粒子去黏聚 200812910 所得的ATH產物粒子的性質相同或幾乎相同。在較佳的實 施實例中，經乾式硏磨之氫氧化鎂的d5〇爲經硏磨乾燥氫氧 ‘ 化鎂粒子d5〇的約90%至約95%之間，更佳係介於經硏磨 乾燥氫氧化鎂粒子d5。的約95 %至約99%的範圍內。 可利用任何已知可有效減少黏聚物的技術來減少經硏 磨乾燥之氫氧化鎂粒子中所存在的黏聚物。在較佳的實施 實例中，利用了風選機或針盤式磨粉機來達成去黏聚處理 。在一些實施實例中，利用了 一或多個針盤式磨粉機來達 Φ 成去黏聚處理，在其它實施實例中，則是利用一或多個風 選機來達成去黏聚處理。 適合用於此的風選機包括那些利用重力、離心力、慣 性力或任何其相關組合來使氫氧化鎂產物粒子分級的風選 機。在此技術領域已熟知這些風選機的用途，具有此領域 一般技術能力及所需最終產物尺寸知識者可以很容易地選 擇含有適當篩網和/或篩子的風選機。 適合用於此的針盤式磨粉機包括乾式和濕式的針盤式 — 磨粉機。如同風選機一般，在此技術領域已熟知針盤式磨 粉機的用途，具有此領域一般技術能力及所需最終氫氧化 鎂產物粒子性質知識者可以很容易地選擇最佳的針盤式磨 粉機來配合特殊的應用。 由本發明所製造之氫氧化鎂產物粒子的特徵在於：所 具有的BET比表面積介於約1至15平方公尺/克的範圍內 ’其係依照DIN-66 1 32來決定。在一個較佳的實施實例中 ’本發明之氫氧化鎂產物粒子所具有的BET比表面積係介 -10- 200812910 於約1至約5平方公尺/克的範圍內，更佳係介於約2.5至 約4平方公尺/克的範圍內。在另一個較佳的實施實例中， . 氫氧化鎂產物粒子所具有的BET比表面積係介於約3至約 7平方公尺/克的範圍內，更佳係介於約4至約6平方公尺/ 克的範圍內。在另一個較佳的實施實例中，氫氧化鎂產物 粒子所具有的BET比表面積係介於約6至約1 0平方公尺/ 克的範圍內，更佳係介於約7至約9平方公尺/克的範圍內 。還有在另一個較佳的實施實例中，氫氧化鎂產物粒子所 Φ 具有的BET比表面積係介於約8至約1 2平方公尺/克的範 圍內，更佳係介於約9至約1 1平方公尺/克的範圍內。 氫氧化鎂產物粒子還有另一項特徵是所具有的cho小 於約3.5 μιη。在一個實施實例中，本發明的氫氧化鎂產物粒 子之特徵在於具有的ch。介於約1.2至約3.5μπι的範掘內， 更佳係介於約1.45至約2.8μιη的範圍內。在另一個實施實 例中，氫氧化鎂產物粒子之特徵在於具有的d5〇介於約0.9 至約2.3 μιη的範圍內，更佳係介於約1.25至約1.65 μιη的範 ® 圍內。在另一個實施實例中，氫氧化鎂產物粒子之特徵在 於具有的d5。介於約0.5至約1.4Mm的範圍內，更佳係介於 約0.8至約1.1 μιη的範圍內。還有在另一個實施實例中， 氫氧化鎂產物粒子之特徵在於具有的d5。介於約0.3至約 1. 3 μιη的範圍內，更佳係介於約0.65至約0.95 μιη的範圍內 〇 値得注意的是··本文中所記載dso的決定是藉由雷射繞 射來進行量測，其係使用Malvern Mastersizer S雷射繞射 -11- 200812910 儀並依照ISO 9276的規範。爲此，使用了來自Merck/德國As previously described, the honing of the filter cake can form honed magnesium hydroxide particles having a larger surface area (determined by the BET method described above) than the magnesium hydroxide particles of the initial filter cake. Typically, the BET 200812910 of the honed magnesium hydroxide particles is about 10% higher than the bet of the magnesium hydroxide particles in the filter cake. Preferably, the BET of the kiln hydroxide > magnesium particles is about 10% to about 40% higher than the 8 million butyl of the magnesium hydroxide particles in the filter cake. Preferably, the BET of the honed magnesium hydroxide particles is from about 10% to about 25% higher than the BET of the magnesium hydroxide particles in the filter cake. The honed dry magnesium hydroxide particles produced can be used directly in many applications. However, in some embodiments, these honed and dried magnesium hydroxide particles are further processed to reduce (and in some embodiments eliminate) the binder in the honed dried magnesium hydroxide particles. Macks are often found in the process of magnesium hydroxide particles. For some applications, their presence does have a detrimental effect on the function of magnesium hydroxide in the resin. Therefore, it is highly desirable for producers of magnesium hydroxide to reduce the amount of cohesive material, preferably to eliminate the binder. In the practice of the present invention, the number of cohes present in the honed and dried magnesium hydroxide particles or the viscosity can be reduced by subjecting the honed and dried magnesium hydroxide particles to a further deagglomeration process step. The degree of concentration. The so-called deagglomeration refers to the further treatment of the honed and dried magnesium hydroxide particles, wherein the number of cohesives present in the honed and dried magnesium hydroxide particles or the degree of cohesion will Lower (i.e., the number of cohes present in the honed and dried magnesium hydroxide particles will be greater than the number of cohesomers present in the magnesium hydroxide product particles), and in some embodiments, will be less When the size of the honed and dried magnesium hydroxide particles is reduced, the binder is substantially removed. By "small amount of reduced particle size" is meant that the d5 氢氧化 of the magnesium hydroxide product particles is greater than or equal to the honed and dried magnesium hydroxide particles d5. 90%. The other properties of the ATH dried by honing are the same or nearly the same as those of the ATH product particles obtained by de-agglomerating the ATH-dried ATH particles. In a preferred embodiment, the d5 氢氧化 of the dry honed magnesium hydroxide is between about 90% and about 95% of the honed dry hydrogen oxy-magnesium particles d5 ,, more preferably between the 硏The dried magnesium hydroxide particles d5 were ground. From about 95% to about 99%. Any of the known techniques effective in reducing the binder can be utilized to reduce the presence of the binder present in the honed and dried magnesium hydroxide particles. In a preferred embodiment, a wind sorter or a dial mill is utilized to achieve the debonding process. In some embodiments, one or more dial-type mills are utilized to achieve a de-agglomeration process, and in other embodiments, one or more wind-selectors are utilized to achieve a de-agglomeration process. Air extractors suitable for use herein include those that utilize gravity, centrifugal force, inertial force, or any combination thereof to classify magnesium hydroxide product particles. The use of these air classifiers is well known in the art, and those having the general technical capabilities and the required final product size in this field can easily select a wind sorter that contains a suitable screen and/or screen. Needle-type mills suitable for this include dry and wet dial-type mills. As with air separators, the use of dial-type mills is well known in the art, and those skilled in the art with the general technical capabilities and the desired properties of the final magnesium hydroxide product particles can easily select the best dial type. The mill is used for special applications. The magnesium hydroxide product particles produced by the present invention are characterized by having a BET specific surface area in the range of from about 1 to 15 square meters per gram, which is determined in accordance with DIN-66 1 32. In a preferred embodiment, the magnesium hydroxide product particles of the present invention have a BET specific surface area in the range of from about 1 to about 5 square meters per gram, more preferably in the range of from about 1 to about 5 square meters per gram. From 2.5 to about 4 square meters per gram. In another preferred embodiment, the magnesium hydroxide product particles have a BET specific surface area in the range of from about 3 to about 7 square meters per gram, more preferably from about 4 to about 6 square meters. Within the range of meters / gram. In another preferred embodiment, the magnesium hydroxide product particles have a BET specific surface area in the range of from about 6 to about 10 square meters per gram, more preferably from about 7 to about 9 squares. Within the range of meters/gram. In still another preferred embodiment, the magnesium hydroxide product particles Φ have a BET specific surface area in the range of from about 8 to about 12 square meters per gram, more preferably from about 9 to Within a range of approximately 11 square meters per gram. Another feature of the magnesium hydroxide product particles is that they have a cho of less than about 3.5 μηη. In one embodiment, the magnesium hydroxide product particles of the present invention are characterized by having a ch. It is in the range of from about 1.2 to about 3.5 μm, more preferably in the range of from about 1.45 to about 2.8 μm. In another embodiment, the magnesium hydroxide product particles are characterized by having a d5 〇 in the range of from about 0.9 to about 2.3 μηη, more preferably in the range of from about 1.25 to about 1.65 μηη. In another embodiment, the magnesium hydroxide product particles are characterized by having a d5. It is in the range of from about 0.5 to about 1.4 Mm, more preferably in the range of from about 0.8 to about 1.1 μm. In yet another embodiment, the magnesium hydroxide product particles are characterized by having d5. Between the range of about 0.3 to about 1.3 μm, and more preferably in the range of about 0.65 to about 0.95 μηη, it is noted that the dso is determined by laser diffraction. For measurement, the Malvern Mastersizer S laser diffraction -11-200812910 was used and in accordance with ISO 9276. For this purpose, used from Merck/Germany
• 具有0.5%的EXTRANMA02溶液，並且施加超音波。EXTRAN • MA02係一種可減少水的表面張力的添加劑，其係用來清除 對鹼敏感的物質。它含有陰離子和非離子界面活性劑、磷 酸鹽和少量的其它物質。超音波係用來使粒子去黏聚。 氫氧化鎂粒子也可以具有的中位平均孔隙半徑（”r5。”） 做爲特徵。氫氧化鎂產物粒子的η。可以由水銀孔隙儀來 推導。水銀孔隙儀的理論係建立在非反應性、非濕潤性液 • 體並不會滲透至孔洞中直到施加足夠的壓力強迫其進入爲 止的物理原理上。因此，要使液體進入孔隙中所需施加的 壓力愈大，孔隙的尺寸就愈小。已發現，孔隙的尺寸愈小 則氫氧化鎂粒子的濕潤性愈佳。氫氧化鎂產物粒子的孔隙 尺寸可以由利用來自義大利Carlo Erba Strumentazione的 水銀孔隙儀Porosimeter 2000所得之數據計算而得。依照 P 〇 r 〇 s i m e t e r 2 〇 〇 〇的使用手冊，下列方程式係由所量測的壓 力p來計算孔隙半徑r : r二-2 r c 〇 s ( 0 ) /p ;其中0爲潤 ® 濕角並且 r爲表面張力。此處進行量測所使用的0値爲 141.3°，且τ被設定爲480達因/公分。 爲了改善量測結果的重現性，孔隙尺寸係由第二次氫 氧化鎂侵入測試的結果計算而得，如Porosimeter 2000使用 手冊中所述。使用第二次測試結果是因爲發明人觀察到， 在擠出之後（亦即將壓力釋放成周圍壓力之後），氫氧化 鎂產物粒子的樣品中仍留有體積爲V。的水銀。因此，r5。 可參考以下第1，2和3圖中所.解釋的數據推導而得。 -12- 200812910 在第一次測試中，如Porosimeter 2000使用手冊中所述 來製備氫氧化鎂產物樣品，並且所量測的孔隙體積係以所 • 施加侵入壓力P的函數關係來表達，其使用的最大壓力爲 2000巴。在第一次測試完畢時，將壓力予以釋放並且讓其 達到周圍懕力。第二次侵入測試（依照Porosimeter 2000使 用手冊）係使用與第一次進行測試完全相同的樣品，第二 次測試所量測的比孔隙體積V(p)將體積V。當做新的起始體 積値，然後再將第二次測試歸零。 Φ 在第二次侵入測試中，樣品所量測的比孔隙體積V(p) 同樣是以所施加侵入壓力的函數關係來表達，其使用的最 大壓力爲2000巴。第1圖所顯不的是對商用級氯氧化錶進 行第二次侵入測試（使用與第一次測試相同的樣品）所得到 比孔隙體積V與所施加壓力之間的函數關係。 由氫氧化鎂產物粒子的第二次侵入測試結果，可依照 公式 r = -2 r cos( θ )/ρ ，藉由 Porosimeter 2000 來計算孔 隙半徑r’其中Θ爲潤濕角’ T爲表面張力並且p爲侵入 ® 壓力。對於此處進行所有r的量測而言，所使用的0値爲 1 4 1 · 3 °，且r被設定爲4 8 0達因/公分。因此，比孔隙體 積可以表示成孔隙半徑r的函數。第2圖所顯示的是第二 次侵入測試（使用與第一次測試相同的氫氧化鎂產物粒子 樣品）所得比孔隙體積V與孔隙半徑r之間的函數關係。 第3圖所顯示的是第二次侵入測試的常規化比孔隙體 積與孔隙半徑r之間的函數關係，亦即，在此圖形中，將 第二次侵入測試的最大比孔隙體積設定爲1 〇〇%，並且將其 -13- 200812910 它的比體積除以此最大値。在本文中將比孔隙體積爲50% ‘ 時所對應的孔隙半徑定義爲中位孔隙半徑，或是r5。。舉例 • 來說，依照第3圖，商用氫氧化鎂的中位孔隙半徑r5。爲 0 · 2 4 8 μ m 〇 用本發明所製得的氫氧化鎂產物粒子來重覆進行上述 程序，結果發現本發明所製得之氫氧化鎂產物粒子所具有 的r 5 〇係介於約0 · 0 1至約〇 · 5 μ m的範圍內。在本發明的一個 實施實例中，氫氧化鎂產物粒·子的r5〇係介於約0.20至約 # 〇·4μιη的範圍內，更佳係介於約0,23至約0.4um的範圍內 ，最佳係介於約0.25至約0·35 μιη的範圍內。在另一個實施 實例中，r5〇係介於約0.15至約0.25 μπι的範圍內，更佳係 介於約0.16至約0.23 μιη的範圍內，最佳係介於約0.175至 約0·22μιη的範圍內。還有在另一個實施實例中，r5〇係介於 約〇·1至約0.2μιη的範圍內，更佳係介於約0.1至約0.16μιη 的範圍內，最佳係介於約0 .1 2至約0 · 1 5 μ m的範圍內。還有 在另一個實施實例中，r5。係介於約〇.〇5至約0.15 μιη的範 ® 圍內，更佳係介於約0.07至約0.13 μιη的範圍內，最佳係介 於約0.1至約0.12um的範圍內。 在一些實施實例中，本發明所製得之氫氧化鎂產物粒 子還有另一項特徵在於所具有的亞麻油吸收能力係介於約 15 %至約40%的範圍內。在一個實施實例中，本發明所製得 之氫氧化鎂產物粒子還有另一項特徵在於所具有的亞麻油 吸收能力係介於約16平方公尺/克至約25 %的範圍內，較 佳係介於約17%至約25 %的範圍內，最佳係介於約19%至約 -14- 200812910 24%的範圍內。在另一個實施實例中，本發明所製得之氫氧 化鎂產物粒子還有另一項特徵在於所具有的亞麻油吸收能 s 力係介於約20%至約28%的範圍內，較佳係介於約21%至約 2 7 %的範圍內，最佳係介於約2 2 %至約2 6 %的範圍內。還有 在另一·個實施實例中，本發明所製得之氫氧化鎂產物粒子 還有另一項特徵在於所具有的亞麻油吸收能力係介於約 24%至約32%的範圍內，較佳係介於約25 %至約31 %的範圍 內，最佳係介於約26%至約30%的範圍內。還有在另一個 • 實施實例中，本發明所製得之氫氧化鎂產物粒子還有另一 項特徵在於所具有的亞麻油吸收能力係介於約27 %至約 34%的範圍內，較佳係介於約28%至約33 %的範圍內，最佳 係介於約2 8 %至約3 2 %的範圍內。 本發明之氫氧化鎂產物粒子可以用來做爲許多種合成 樹脂的阻燃劑。可使用氫氧化鎂粒子之熱塑性樹脂的非限 制性實例包括：聚乙烯；聚丙烯；乙烯-丙烯共聚物；C2 至C8烯烴 （α -烯烴）的聚合物和共聚物，如聚丁烯、聚（4-® 甲基戊烯-1)或類似物·，這些烯烴和二烯的共聚物；乙烯一 丙烯酸酯共聚物；聚苯乙烯；ABS樹脂；AAS樹脂；AS樹 S旨；MBS樹脂；乙烯-氯乙烯共聚物樹脂；乙烯-乙酸乙烯 酯共聚物樹脂；乙烯-氯乙烯-乙酸乙烯酯接枝聚合物樹脂 ;偏二氯乙烯；聚氯乙烯；氯化聚乙烯；氯化聚丙烯；氯 乙烯-丙烯共聚物；乙酸乙烯酯樹脂；苯氧樹脂；聚縮醛； 聚醯胺；聚醯亞胺；聚碳酸酯；聚礪·，聚苯醚；聚苯硫醚 ;聚對酞酸乙二酯；聚對酞酸丁二酯；甲基丙烯酸樹脂等 -15- 200812910 。其它適合之合成樹脂的實例包括熱固性樹脂，如環氧樹 脂；酚樹脂；三聚氰胺樹脂；不飽和聚酯樹脂；醇酸樹脂 ‘ 和脲樹脂及天然或合成橡膠，如EPDM、丁基橡膠、異戊二 烯橡膠、SBR、NIR、胺基甲酸乙酯橡膠、聚丁二烯橡膠、 丙烯酸橡膠、矽酮橡膠；也包括氟-彈性體、NBR和氯-磺 化聚乙烯。還包括聚合懸浮體（乳膠）。 合成樹脂較佳爲聚丙烯系樹脂，如聚丙烯均聚物和乙 烯-丙烯共聚物；聚乙烯系樹脂，如高密度聚乙烯、低密度 Φ 聚乙烯、直鏈低密度聚乙烯、超低密度聚乙烯、EVA (乙烯 -乙酸乙烯酯樹脂），EEA (乙烯-丙烯酸乙酯樹脂），EMA (乙 烯-丙烯酸甲酯樹脂共聚物樹脂），EAA (乙烯-丙烯酸共聚 物樹脂）和超高分子量聚乙烯；以及C2至C8烯烴 （α -烯烴 )的聚合物和共聚物，如聚丁烯、聚（4-甲基戊烯-1);聚醯 亞胺、聚氯乙烯和橡膠。在更佳的實施實例中，合成樹脂 爲聚乙烯系樹脂。 本發明人發現：將本發明的氫氧化鎂產物粒子用來做 ® 爲合成樹脂中的阻燃劑，可以使得含有氫氧化鎂的合成樹 脂具有更佳的混煉功能和更佳的黏度性能（亦即較低的黏 度）。對於那些由含有氫氧化鎂的合成樹脂來生產最終擠出 或模製物品的混煉廠、製造商而言，非常需要更佳的混煉 功能及更佳的黏度。 所謂較佳的混煉功能係指用來混合含有本發明所製造 氫氧化鎂產物粒子之合成樹脂的混煉機（如Buss Κο-揑合 機或雙螺桿擠壓機）的能量變動幅度比用來混合含有傳統 -16- 200812910 氫氧化鎂粒子之合成樹脂的混煉機的能量變動幅度爲小。 能量變動幅度愈小可使得被混合或押出的材料的處理量愈 ‘ 高，和/或得到更均勻（均質的）材料。 所謂較佳的黏度性能係指含有本發明所製造氫氧化鎂 產物粒子之合成樹脂的黏度比含有傳統氫氧化鎂粒子之合 成樹脂的黏度要低。這樣的低黏度可使得押出和/或充塡 模具的速度更快，押出或充塡模具所需的壓力更少等，也 因而提高了押出速度和/降低了充塡模具的時間，進而提 _ 高產量。 因此，在一個實施實例中，本發明係關於一種阻燃聚 合物配方，其包含至少一種合成樹脂（如前所述，在某些 實施實例中只有一種合成樹脂），以及數量足以阻燃的氫 氧化鎂產物粒子；以及由阻燃聚合物配方所製造的模製和 /或押出成型物品。 所謂足以阻燃的氫氧化鎂產物粒子含量，通常是指介 於約5重量％至約9 0重量％的範圍內，其係以阻燃聚合物 ® 配方的重量爲基準，更佳是介於約20重量％至約70重量％ 的範圍內，其也是基於相同的基準。在最佳的實施實例中 ，阻燃含量係30重量％至65重量％的氫氧化鎂產物粒子， 其也是基於相同的基準。 這種阻燃聚合物配方也可以含有此領域中常用的其它 添加劑。適合用於本發明之阻燃聚合物配方中的其它添加 / 劑之非限制性實例包括擠壓助劑，如聚乙烯蠟、Si-系的擠 壓助劑、脂肪酸；偶合劑，如胺基-、乙烯基-或烷基矽烷 -17- 200812910 或順丁烯二酸接枝聚合物；硬脂酸鋇或硬脂酸鈣；有機過 氧化物；染料；顏料；塡料；發泡劑；除臭劑；熱安定劑 :抗氧化劑；抗靜電劑；強化劑；金屬清除劑或去活化劑 ;衝撃改質劑；加工助劑；脫模助劑；潤滑劑；抗結塊劑 ;其它阻燃劑；UV安定劑；塑化劑；助流劑等。如有需要 ，在阻燃聚合物配方中也可以包括成核劑，如矽酸鈣或靛 藍。其它選用的添加劑之比例可比照傳統用量，並且可以 視任何特定情況之需要來調整。 對於本發明而言，阻燃聚合物配方各種成分的摻入和 添加方法以及其模製的進行方法都不是很重要，其可以此 領域已知的任何一種方法來進行，只要所選擇的方法可以 均勻的混合及模製即可。舉例來說，上述的每一種成分和 選用的添加劑（如有使用的話）可以利用Buss Ko-揑合機、 密閉混合機、Farrel連續式攪拌機或是雙螺桿擠壓機來攪 拌’或者是在某些情況之下，也可以使用單螺桿押出機或 是雙輥硏磨機，之後在接續的加工步驟中將阻燃聚合物配 方予以模製。此外，阻燃聚合物配方的模製物品可以在應 用的製備（如拉伸加工、壓紋加工、塗布、印刷、電鍍、 打孔或切割）之後使用。這種經揑合的混合物也可以被充 氣成型、射出成型、押出成型、吹塑成型、加壓成型、旋 轉成型或壓延成型。 如果是押出成型的物品，可以使用任何一種已知可有 效用於上述合成樹脂混合物的押出成型技術。在一個示範 例舉的技術中，將合成樹脂、氫氧化鎂產物粒子和選用的 -18- 200812910 成分（如果選擇使用的話）在混煉機中混合，以形成如上所 ' 述的阻燃劑樹脂配方。接著在擠壓機中將阻燃劑樹脂配方 * 加熱至溶融狀態，並且使熔融的阻燃劑樹脂配方接著經由 一個挑選的模擠壓出來，而形成押出成型的物品，或者是 用來包覆（例如）用來傳輸資料的金屬線或玻璃纖維。 以上的敘述內容係關於本發明的數種實施實例。習於 本技術領域者將能瞭解可有其它策劃方式來達成本發明的 精神，且同樣有效。同時也應注意，在本文中的本發明較 , # 佳實施實例所討論之所有範圍係包括任何較低的數量至任 何較高的數量之間的範圍。例如，當討論到氫氧化鎂產物 粒子的吸油能力時，它將約15%至約27%、約15%至約27% 等之間的範圍皆視爲在本發明的範疇之內。 【圖示簡單說明】 第1圖所顯示的是對商用級氫氧化鎂進行侵入測試所 得到氫氧化鎂比孔隙體積V與所施加壓力之間的函數關係 〇 ^ 第2圖所顯示的是對氫氧化鎂進行侵入測試所得比孔 隙體積V與孔隙半徑r之間的函數關係。 第3圖所顯示的是氫氧化鎂侵入測試的常規化比孔隙 體積，此圖形係將最大比孔隙體積設定爲1 00%，其它的比 體積則是除以此最大値。 【元件符號說明】 •19-• Has a 0.5% EXTRANMA02 solution and applies ultrasonic waves. EXTRAN • MA02 is an additive that reduces the surface tension of water and is used to remove alkali sensitive substances. It contains anionic and nonionic surfactants, phosphates and minor amounts of other substances. Ultrasonic waves are used to deagglomerate particles. The magnesium hydroxide particles may also have a median average pore radius ("r5.") as a feature. η of the magnesium hydroxide product particles. It can be derived from a mercury porosimeter. The theory of mercury porosimeters is based on the physical principle that non-reactive, non-wetting liquids do not penetrate into the pores until sufficient pressure is applied to force them into. Therefore, the greater the pressure required to allow liquid to enter the pores, the smaller the pore size. It has been found that the smaller the pore size, the better the wettability of the magnesium hydroxide particles. The pore size of the magnesium hydroxide product particles can be calculated from data obtained using a mercury porosimeter Porisometer 2000 from Carlo Erba Strumentazione, Italy. According to the manual of P 〇r 〇simeter 2 ,, the following equation calculates the pore radius r from the measured pressure p: r 2 - 2 rc 〇 s ( 0 ) /p ; where 0 is the Run® wet angle And r is the surface tension. The 0 使用 used for the measurement here is 141.3°, and τ is set to 480 dynes/cm. In order to improve the reproducibility of the measurement results, the pore size is calculated from the results of the second magnesium hydroxide intrusion test, as described in the Porosimeter 2000 manual. The second test result was used because the inventors observed that after extrusion (i.e., after the pressure was released to ambient pressure), the volume of the magnesium hydroxide product particles remained in the sample. Mercury. Therefore, r5. It can be derived by referring to the data explained in the following figures 1, 2 and 3. -12- 200812910 In the first test, a sample of magnesium hydroxide product was prepared as described in the Porosimeter 2000 manual and the measured pore volume was expressed as a function of the applied invasive pressure P. The maximum pressure is 2000 bar. At the end of the first test, the pressure is released and allowed to reach the surrounding force. The second intrusion test (according to the Porosimeter 2000 manual) uses exactly the same sample as the first test, and the second test measures the specific pore volume V(p) by volume V. As a new starting volume, then zero the second test. Φ In the second intrusion test, the sample measured by the pore volume V(p) is also expressed as a function of the applied intrusion pressure, using a maximum pressure of 2000 bar. What is shown in Figure 1 is a function of the specific pore volume V versus applied pressure for a second intrusion test of a commercial grade chlorine oxidation meter (using the same sample as the first test). From the second intrusion test result of the magnesium hydroxide product particles, the pore radius r' can be calculated by Porosimeter 2000 according to the formula r = -2 r cos( θ )/ρ, where Θ is the wetting angle 'T is the surface tension And p is the intrusion® pressure. For the measurement of all r here, the 0 使用 used is 1 4 1 · 3 °, and r is set to 480 dynes/cm. Thus, the specific pore volume can be expressed as a function of the pore radius r. Figure 2 shows the relationship between the pore volume V and the pore radius r obtained for the second intrusion test (using the same magnesium hydroxide product particle sample as the first test). Figure 3 shows the normalization of the second intrusion test as a function of pore volume and pore radius r, that is, in this graph, the maximum specific pore volume of the second intrusion test is set to 1 〇〇%, and divide its specific volume by -13-200812910. In this paper, the pore radius corresponding to the pore volume of 50% ‘ is defined as the median pore radius, or r5. . Example • In terms of Figure 3, the median pore radius r5 of commercial magnesium hydroxide. The procedure described above was repeated using 0. 2 4 8 μ m of the magnesium hydroxide product particles obtained by the present invention. As a result, it was found that the magnesium hydroxide product particles obtained by the present invention have an r 5 lanthanide system. It is in the range of about 0 · 0 1 to about 〇 · 5 μ m. In one embodiment of the invention, the r5 lanthanide of the magnesium hydroxide product granules is in the range of from about 0.20 to about #〇·4μηη, more preferably in the range of from about 0,23 to about 0.4 um. The optimum system is in the range of from about 0.25 to about 0. 35 μm. In another embodiment, the r5 lanthanide is in the range of from about 0.15 to about 0.25 μπι, more preferably in the range of from about 0.16 to about 0.23 μηη, and most preferably from about 0.175 to about 0.22 μηη. Within the scope. In yet another embodiment, the r5 lanthanide is in the range of from about 〇1 to about 0.2 μηη, more preferably in the range of from about 0.1 to about 0.16 μηη, and the optimum is between about 0.1 2 to about 0 · 1 5 μ m. Also in another embodiment, r5. The system is in the range of from about 〇5 to about 0.15 μηη, more preferably in the range of from about 0.07 to about 0.13 μηη, and most preferably in the range of from about 0.1 to about 0.12 um. In some embodiments, the magnesium hydroxide product particles produced by the present invention are further characterized by having a linseed oil absorption capacity ranging from about 15% to about 40%. In one embodiment, the magnesium hydroxide product particles produced by the present invention are further characterized by having a linseed oil absorption capacity ranging from about 16 square meters per gram to about 25%. Preferably, the system is in the range of from about 17% to about 25%, and the optimum is in the range of from about 19% to about -14 to 200812910 24%. In another embodiment, the magnesium hydroxide product particles produced by the present invention are further characterized by having a linseed oil absorption energy in the range of from about 20% to about 28%, preferably. The range is from about 21% to about 27%, and the optimum is in the range of from about 22% to about 26%. In yet another embodiment, the magnesium hydroxide product particles produced by the present invention are further characterized by having a linseed oil absorption capacity ranging from about 24% to about 32%. Preferably, it is in the range of from about 25% to about 31%, and the optimum is in the range of from about 26% to about 30%. In still another embodiment, the magnesium hydroxide product particles produced by the present invention are further characterized by having a linseed oil absorption capacity ranging from about 27% to about 34%. Preferably, the system is in the range of from about 28% to about 33%, and the optimum is in the range of from about 28% to about 32%. The magnesium hydroxide product particles of the present invention can be used as a flame retardant for a wide variety of synthetic resins. Non-limiting examples of thermoplastic resins that can use magnesium hydroxide particles include: polyethylene; polypropylene; ethylene-propylene copolymers; polymers and copolymers of C2 to C8 olefins (alpha-olefins), such as polybutene, poly (4-® methylpentene-1) or the like, a copolymer of these olefins and a diene; an ethylene-acrylate copolymer; polystyrene; ABS resin; AAS resin; AS tree S; MBS resin; Ethylene-vinyl chloride copolymer resin; ethylene-vinyl acetate copolymer resin; ethylene-vinyl chloride-vinyl acetate graft polymer resin; vinylidene chloride; polyvinyl chloride; chlorinated polyethylene; Vinyl chloride-propylene copolymer; vinyl acetate resin; phenoxy resin; polyacetal; polyamine; polyimine; polycarbonate; polyfluorene, polyphenylene ether; polyphenylene sulfide; Ethylene glycol; polybutylene terephthalate; methacrylic resin, etc. -15- 200812910. Examples of other suitable synthetic resins include thermosetting resins such as epoxy resins; phenol resins; melamine resins; unsaturated polyester resins; alkyd resins and urea resins and natural or synthetic rubbers such as EPDM, butyl rubber, and isoprene. Diene rubber, SBR, NIR, urethane rubber, polybutadiene rubber, acrylic rubber, fluorenone rubber; also includes fluorine-elastomers, NBR and chloro-sulfonated polyethylene. Also included are polymeric suspensions (latex). The synthetic resin is preferably a polypropylene resin such as a polypropylene homopolymer and an ethylene-propylene copolymer; a polyethylene resin such as high density polyethylene, low density Φ polyethylene, linear low density polyethylene, ultra low density Polyethylene, EVA (ethylene-vinyl acetate resin), EEA (ethylene-ethyl acrylate resin), EMA (ethylene-methyl acrylate resin copolymer resin), EAA (ethylene-acrylic copolymer resin) and ultra-high molecular weight poly Ethylene; and polymers and copolymers of C2 to C8 olefins (α-olefins) such as polybutene, poly(4-methylpentene-1); polyimine, polyvinyl chloride and rubber. In a more preferred embodiment, the synthetic resin is a polyethylene resin. The present inventors have found that the use of the magnesium hydroxide product particles of the present invention as a flame retardant in synthetic resins allows the synthetic resin containing magnesium hydroxide to have a better mixing function and better viscosity properties ( That is, lower viscosity). For those kneaders and manufacturers that produce final extruded or molded articles from synthetic resins containing magnesium hydroxide, better mixing and better viscosity are needed. The preferred kneading function means a ratio of energy fluctuations of a kneader (such as a Buss Κο-kneader or a twin-screw extruder) for mixing a synthetic resin containing the magnesium hydroxide product particles produced by the present invention. The energy variation range of the kneader in which the synthetic resin containing the conventional-16-200812910 magnesium hydroxide particles is mixed is small. The smaller the energy variation, the higher the amount of material being mixed or extruded, and/or the more uniform (homogeneous) material. The preferred viscosity property means that the viscosity of the synthetic resin containing the magnesium hydroxide product particles produced by the present invention is lower than that of the synthetic resin containing the conventional magnesium hydroxide particles. Such a low viscosity allows for faster extrusion and/or filling of the mold, less pressure required to eject or fill the mold, and thus an increase in the extrusion speed and/or a reduction in the time required to fill the mold, thereby high production. Accordingly, in one embodiment, the present invention is directed to a flame retardant polymer formulation comprising at least one synthetic resin (as previously described, in some embodiments only one synthetic resin), and a sufficient amount of hydrogen to be flame retarded Magnesium oxide product particles; and molded and/or extruded articles made from flame retardant polymer formulations. The content of the magnesium hydroxide product particles which are sufficiently flame retardant generally means a range of from about 5% by weight to about 90% by weight, based on the weight of the flame retardant polymer® formulation, more preferably It is in the range of about 20% by weight to about 70% by weight, which is also based on the same benchmark. In a preferred embodiment, the flame retardant content is from 30% to 65% by weight of the magnesium hydroxide product particles, which are also based on the same basis. This flame retardant polymer formulation may also contain other additives commonly used in the art. Non-limiting examples of other additives/agents suitable for use in the flame retardant polymer formulations of the present invention include extrusion aids such as polyethylene waxes, Si-based extrusion aids, fatty acids; coupling agents such as amine groups. -, vinyl- or alkyl decane-17- 200812910 or maleic acid graft polymer; barium stearate or calcium stearate; organic peroxide; dye; pigment; Deodorant; heat stabilizer: antioxidant; antistatic agent; strengthening agent; metal scavenger or deactivating agent; smashing modifier; processing aid; mold release aid; lubricant; anti-caking agent; Burning agent; UV stabilizer; plasticizer; glidant. Nucleating agents such as calcium citrate or indigo may also be included in the flame retardant polymer formulation, if desired. The ratio of other selected additives can be compared to conventional dosages and can be adjusted to suit any particular situation. For the purposes of the present invention, methods of incorporation and addition of various components of the flame retardant polymer formulation, as well as methods of performing the molding thereof, are not critical and can be carried out by any of the methods known in the art, as long as the method of choice is Evenly mix and mold. For example, each of the above ingredients and optional additives (if used) can be stirred using a Buss Ko-kneader, a closed mixer, a Farrel continuous mixer or a twin-screw extruder' or some In this case, it is also possible to use a single-screw extruder or a two-roll honing machine, after which the flame-retardant polymer formulation is molded in successive processing steps. In addition, molded articles of the flame retardant polymer formulation can be used after application preparation (e.g., drawing, embossing, coating, printing, plating, punching or cutting). This kneaded mixture can also be subjected to inflation molding, injection molding, extrusion molding, blow molding, press molding, rotary molding or calender molding. If the molded article is extruded, any extrusion molding technique known to be effective for the above synthetic resin mixture can be used. In an exemplary embodiment, the synthetic resin, magnesium hydroxide product particles, and optional -18-200812910 ingredients, if selected, are mixed in a mixer to form a flame retardant resin as described above. formula. The flame retardant resin formulation* is then heated to a molten state in an extruder, and the molten flame retardant resin formulation is then extruded through a selected die to form an extruded article, or to be coated (for example) metal wire or fiberglass used to transfer data. The above description is directed to several embodiments of the invention. Those skilled in the art will recognize that other planning approaches can be made to achieve the spirit of the present invention and are equally effective. It should also be noted that all ranges discussed herein in the context of the present invention include any range between the lower number and any higher number. For example, when the oil absorbing ability of the magnesium hydroxide product particles is discussed, it is considered to be within the scope of the present invention in the range between about 15% to about 27%, about 15% to about 27%, and the like. [Simple illustration of the diagram] Figure 1 shows the relationship between the pore volume V and the applied pressure of the magnesium hydroxide obtained by intrusive testing of commercial grade magnesium hydroxide. Figure 2 shows the Magnesium hydroxide is subjected to an intrusion test as a function of pore volume V and pore radius r. Figure 3 shows the normalized specific pore volume of the magnesium hydroxide intrusion test, which is set to a maximum specific pore volume of 100%, and the other specific volumes are divided by the maximum enthalpy. [Component Symbol Description] • 19-