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公开(公告)号：KR100743674B1
公开(公告)日：2007-07-30
申请号：KR1020060081600
申请日：2006-08-28
Abstract: Provided are a pearlescent pigment, which has a large aspect ratio and an excellent gloss and is able to express metal colors and interference colors such as silver, gold, red, purple, blue, green, etc, and a preparation method thereof. The pearlescent pigment is prepared by the steps of: mixing a water-soluble flux-containing aqueous aluminum precursor solution with an aqueous precursor solution containing 0.1-5 parts by weight, based on 100 parts by weight of the aluminum precursor, of a zinc precursor to prepare an aqueous solution of metal precursors; titrating the aqueous solution of metal precursors with an aqueous solution of sodium salt to the range of pH 6.0-7.5, and carrying out hydrolysis to prepare a mixed gel; maturing the mixed gel at 60-100°C for 5-30hours; drying the matured gel at 60-200°C for 1-48hours; crystallizing the dried gel at 850-1,300°C for 1-10hours to prepare a crystallized cake; cooling the crystallized cake to ambient temperature, dispersing the cooled cake in water of 20-90°C, filtering the dispersion to remove flux, dispersing the precipitate in 0.1-30% sulfuric acid solution of 20-90°C, filtering, washing, and drying the dispersion to prepare alpha-alumina crystals; and adjusting pH at 1.0-3.0 by adding an acid to an aqueous solution in which the alpha-alumina crystals are suspended, thereto adding 30-60 parts by weight of a metal or a precursor of metal and 30-65 parts by weight of an alkali aqueous solution based on 100 parts by weight of the crystals, and firing the admixture to form a coating layer on a crystal surface.
Abstract translation: 本发明提供一种珠光颜料及其制备方法，所述珠光颜料具有大纵横比和优异的光泽度，并且能够表现金属颜色和干涉颜色，如银，金，红，紫，蓝，绿等。 该珠光颜料通过以下步骤制备：将基于100重量份的铝前体的含有0.1-5重量份的锌前体的水溶性含助熔剂的水性铝前体溶液与含水前体溶液 制备金属前体的水溶液; 用钠盐水溶液滴定金属前体水溶液至pH6.0-7.5范围内，进行水解制备混合凝胶; 在60-100℃下使混合的凝胶成熟5-30小时; 将成熟的凝胶在60-200℃干燥1-48小时; 在850-1,300℃下将干燥的凝胶结晶1-10小时以制备结晶饼; 将结晶的滤饼冷却至环境温度，将冷却的滤饼分散在20-90℃的水中，过滤分散体以除去助熔剂，将沉淀物分散在20-90℃的0.1-30％硫酸溶液中，过滤，洗涤， 并干燥该分散体以制备α-氧化铝晶体; 并通过向其中悬浮有α-氧化铝晶体的水溶液中加入酸将pH调节至1.0-3.0，向其中加入30-60重量份的金属或金属前体和30-65重量份的 基于100重量份晶体的碱性水溶液，并且烧结该混合物以在晶体表面上形成涂层。
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公开(公告)号：KR100481973B1
公开(公告)日：2005-04-13
申请号：KR1020020058493
申请日：2002-09-26
IPC: C12N11/00
Abstract: 본 발명은 미생물 고정화 유·무기 복합담체 및 제조방법에 관한 것으로, 더욱 상세하게는 무기흡착소재 30 ∼ 80 중량%, 융점이 200 ℃ 미만인 열가소성수지 20 ∼ 70 중량%, 점결제 1 ∼ 10 중량% 및 수 용출성 탄산염 1 ∼ 20 중량%가 각각함유되어, 종래의 제조공정에서 일반적으로 수행했던 발포과정 및 소성과정 없이 직접 건조과정을 도입하여 다공성 복합담체가 제작됨으로써, 제조공정의 단순화와 원가의 저렴화 뿐만아니라 흡착력을 현저히 증가시키고 개·폐기공을 연결하여 오염물질의 유입 및 접촉을 원활히 하고 미생물의 서식환경에 적합한 구조를 갖는 성능이 우수한 미생물 고정화 유·무기 복합담체 및 이의 제조방법에 관한 것이다.
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公开(公告)号：KR100475512B1
公开(公告)日：2005-03-10
申请号：KR1020020034595
申请日：2002-06-20
Applicant: 한국화학연구원 , (주)유니온카본 , 코리아에프티 주식회사
IPC: C01B31/08
Abstract: 본 발명은 리그노셀룰로오즈계 성형활성탄 제조방법에 관한 것으로서, 기존 제조공정보다 단순한 공정으로 고밀도, 고성능 성형활성탄을 제조하는데 목적이 있다.
이를 위하여, 공정의 단순화 및 설비의 간소화를 도모할 수 있고, 특히 활성탄의 기계적 강도 및 흡착능을 향상시킬 수 있으며, 에너지절약 및 환경오염감소에 적극적으로 대처할 수 있도록 한 혼합, 열경화, 분쇄, 성형조제첨가, 응집 공정을 일괄적으로 수행할 수 있는 고전단력믹서를 포함하는 리그노셀룰로오즈계 성형활성탄 제조방법을 제공한다.-
公开(公告)号：KR100441407B1
公开(公告)日：2004-07-23
申请号：KR1020020013210
申请日：2002-03-12
Applicant: 한국화학연구원
IPC: C08F6/16
Abstract: PURPOSE: Provided is a method for producing a globular powder of polymethylmethacrylate with high efficiency and high productivity, in which crystal is formed in solution by simple production equipment and process without polymerization additives such as emulsifier and dispersant. CONSTITUTION: The method comprises the steps of (i) stirring a mass polymethylmethacrylate resin at temperature of its boiling point or 20deg.C lower than the boiling point, in phase-separation solvent, so as to form transparent homogeneous solution; (ii) cooling the heated homogeneous solution to 0-30 deg.C in a rate of 0.001-200 deg.C/min., to perform a phase-separation of solvent and polymethylmethacrylate, thereby forming a nucleus of polymer crystal, and adjusting a growth velocity of the formed nucleus to form an inhomogeneous solution(from which polymethylmethacrylate is removed as a separate globular particle); and (iii) dissolving, washing and removing only the phase-separation solvent by using washing solvent, and isolating and filtrating the phase-separated polymethylmethacrylate, so as to globular polymethylmethacrylate powder having uniform size distribution.
Abstract translation: 目的：提供一种高效且高生产率的聚甲基丙烯酸甲酯球状粉末的制造方法，其中通过简单的生产设备和工艺在没有聚合添加剂如乳化剂和分散剂的情况下在溶液中形成结晶。 构成：该方法包括以下步骤：（i）在相分离溶剂中，在沸点或低于沸点20℃的温度下搅拌聚甲基丙烯酸甲酯树脂，以形成透明均匀溶液; （ii）以0.001〜200℃/ min的速度将加热后的均匀溶液冷却至0〜30℃，进行溶剂与聚甲基丙烯酸甲酯的相分离，形成聚合物晶体的核， 形成的核的生长速度以形成不均匀的溶液（聚甲基丙烯酸甲酯作为单独的球形颗粒从中移除）; （iii）通过使用洗涤溶剂仅溶解，洗涤和除去相分离溶剂，并分离和过滤相分离的聚甲基丙烯酸甲酯，从而得到具有均匀尺寸分布的球状聚甲基丙烯酸甲酯粉末。
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Patent Agency Ranking
公开(公告)号：KR100434941B1
公开(公告)日：2004-06-10
申请号：KR1020010024502
申请日：2001-05-07
Applicant: 한국화학연구원
Abstract: PURPOSE: A polytetrafluoroethylene water-dispersive substance and its preparation method are provided, which has a high concentration of 60-70% and a nano-size of 100-200 nm. CONSTITUTION: The method comprises the steps of emulsion polymerizing gaseous polytetrafluoroethylene monomer in the presence of purified water, a fluorine-based surfactant, an emulsion stabilizer and an initiator; mixing the obtained one with a mixture of a nonionic surfactant and an anionic surfactant by stirring at the same temperature with the emulsion polymerization; stopping the stirring and concentrating the mixture; separating polytetrafluoroethylene water-dispersive substance from the upper mixture layer of the purified water and the emulsion stabilizer; and drying the polytetrafluoroethylene water-dispersive substance.
Abstract translation: 目的：提供一种聚四氟乙烯水分散物质及其制备方法，其具有60-70％的高浓度和100-200纳米的纳米尺寸。 构成：该方法包括在净化水，氟基表面活性剂，乳液稳定剂和引发剂的存在下乳液聚合气态聚四氟乙烯单体的步骤; 通过在与乳液聚合相同的温度下搅拌将所得产物与非离子表面活性剂和阴离子表面活性剂的混合物混合; 停止搅拌并浓缩混合物; 从纯化水的上层混合物层和乳化稳定剂中分离出聚四氟乙烯水分散物质; 并干燥聚四氟乙烯水分散物质。
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公开(公告)号：KR1020040026871A
公开(公告)日：2004-04-01
申请号：KR1020020058493
申请日：2002-09-26
IPC: C12N11/00
CPC classification number: C12N11/00
Abstract: PURPOSE: Organic and inorganic hybrid media for microorganism immobilization and a producing method thereof are provided to simply and cheaply produce the organic and inorganic hybrid media by deleting foaming and calcination processes, and significantly increase the adsorption of media. CONSTITUTION: Organic and inorganic hybrid media for microorganism immobilization comprise 30 to 80 wt.% of inorganic adsorption materials having an average diameter of 1 to 10 micrometers such as silica gel powder, A type zeolite powder, amorphous alumina powder and coal or coconut based powdery active carbon; 20 to 70 wt.% of thermoplastic resin having a melting point of 200 deg. C such as polyethylene wax powder; 1 to 10 wt.% of caking agent such as sodium bentonite; and 1 to 20 wt.% of water-soluble carbonate such alkali metal and alkali earth metal. A method for producing the organic and inorganic hybrid media for microorganism immobilization comprises the steps of: mixing inorganic adsorption materials, thermoplastic resin, caking agent and water-soluble carbonate with water and pressure-shaping the mixture to form a first cylindrical, spherical or tube type product; mixing the first product with thermoplastic resin powder to form a second product; drying the second product at 100 to 150 deg. C for 5 to 10 hours and at 150 to 200 deg. C for 1 to 7 hours; and cooling the product, dipping it in water of 60 to 100 deg. C for 1 to 10 hours, and washing and drying it at 100 to 120 deg. C for 5 to 20 hours.
Abstract translation: 目的：提供用于微生物固定的有机和无机杂交介质及其制备方法，通过缺少发泡和煅烧过程简单且便宜地生产有机和无机杂化介质，并显着增加介质的吸附。 构成：用于微生物固定化的有机和无机杂化介质包含平均直径为1至10微米的无机吸附材料的30至80重量％，例如硅胶粉末，A型沸石粉末，无定形氧化铝粉末和煤或椰子粉末 活性炭; 20〜70重量％的熔点为200度的热塑性树脂。 C如聚乙烯蜡粉; 1〜10重量％的结块剂如钠膨润土; 和1〜20重量％的水溶性碳酸盐如碱金属和碱土金属。 制备用于微生物固定的有机和无机杂化介质的方法包括以下步骤：将无机吸附材料，热塑性树脂，结块剂和水溶性碳酸盐与水混合并将混合物加压成型以形成第一圆柱形，球形或管 型产品; 将第一产品与热塑性树脂粉末混合以形成第二产品; 在100至150度干燥第二产品。 5至10小时和150至200度。 C 1〜7小时; 并冷却产品，将其浸入60至100度的水中。 C进行1〜10小时，并在100〜120℃下洗涤干燥。 C 5〜20小时。
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公开(公告)号：KR1020030075072A
公开(公告)日：2003-09-22
申请号：KR1020020014175
申请日：2002-03-15
Applicant: 한국화학연구원
IPC: C08F2/28
Abstract: PURPOSE: Provided is a method for producing spherical polyethylene powder which excludes the need for production of a polymerization catalyst, and simplifies the processing steps to save the costs and to improve the productivity. CONSTITUTION: The method for producing spherical polyethylene powder comprises the steps of: (a) dissolving a polyethylene into a good solvent to form a transparent and homogeneous solution; (b) heating a non-solvent which cannot dissolve polyethylene in a separate container at a temperature higher than the melting temperature of polyethylene; (c) mixing the homogeneous solution of the step (a) with the heated non-solvent of the step (b); (d) cooling the mixture to a temperature lower than the crystallization temperature of polyethylene to form an emulsion; and (e) separating and filtering the emulsion, removing the remaining good solvent and non-solvent with a washing solvent and then drying. The apparatus for producing spherical polyethylene powder comprises the means(1) for dissolving the polyethylene into the good solvent; a means(2) for heating the non-solvent; an agitated crystallizing device(3) for mixing the good solvent with the non-solvent; a filter(4) for recovering spherical polyethylene particles; and a separator(5) for recycling the remaining polyethylene.
Abstract translation: 目的：提供一种不需要生产聚合催化剂的球形聚乙烯粉末的制造方法，并且简化了节省成本并提高生产率的加工步骤。 构成：球形聚乙烯粉末的制造方法包括以下步骤：（a）将聚乙烯溶解在良溶剂中以形成透明且均匀的溶液; （b）在高于聚乙烯的熔融温度的温度下加热不溶于聚乙烯的非溶剂; （c）将步骤（a）的均匀溶液与步骤（b）的加热非溶剂混合; （d）将混合物冷却到低于聚乙烯的结晶温度的温度以形成乳液; 和（e）分离和过滤乳液，用洗涤溶剂除去剩余的良溶剂和非溶剂，然后干燥。 用于制备球形聚乙烯粉末的装置包括用于将聚乙烯溶解到良溶剂中的装置（1） 用于加热非溶剂的装置（2）; 用于将良溶剂与非溶剂混合的搅拌结晶装置（3）; 用于回收球形聚乙烯颗粒的过滤器（4） 和用于再循环剩余聚乙烯的分离器（5）。
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公开(公告)号：KR1020030073576A
公开(公告)日：2003-09-19
申请号：KR1020020013210
申请日：2002-03-12
Applicant: 한국화학연구원
IPC: C08F6/16
CPC classification number: C08F120/14 , C08F2/02 , C08J3/12
Abstract: PURPOSE: Provided is a method for producing a globular powder of polymethylmethacrylate with high efficiency and high productivity, in which crystal is formed in solution by simple production equipment and process without polymerization additives such as emulsifier and dispersant. CONSTITUTION: The method comprises the steps of (i) stirring a mass polymethylmethacrylate resin at temperature of its boiling point or 20deg.C lower than the boiling point, in phase-separation solvent, so as to form transparent homogeneous solution; (ii) cooling the heated homogeneous solution to 0-30 deg.C in a rate of 0.001-200 deg.C/min., to perform a phase-separation of solvent and polymethylmethacrylate, thereby forming a nucleus of polymer crystal, and adjusting a growth velocity of the formed nucleus to form an inhomogeneous solution(from which polymethylmethacrylate is removed as a separate globular particle); and (iii) dissolving, washing and removing only the phase-separation solvent by using washing solvent, and isolating and filtrating the phase-separated polymethylmethacrylate, so as to globular polymethylmethacrylate powder having uniform size distribution.
Abstract translation: 目的：提供一种以高效率，高生产率生产聚甲基丙烯酸甲酯的球状粉末的方法，其中通过简单的生产设备和不含聚合添加剂如乳化剂和分散剂的方法在溶液中形成晶体。 方案：该方法包括以下步骤：（i）在相分离溶剂中，在沸点或低于沸点的温度下搅拌聚甲基丙烯酸甲酯树脂，形成透明的均匀溶液; （ii）将加热的均匀溶液以0.001-200℃/分钟的速率冷却至0-30℃，进行溶剂和聚甲基丙烯酸甲酯的相分离，从而形成聚合物晶体的核，并调节 所形成的核的生长速度形成不均匀的溶液（聚甲基丙烯酸甲酯作为单独的球状颗粒除去）; 和（iii）通过使用洗涤溶剂仅溶解，洗涤和除去相分离溶剂，并分离并过滤相分离的聚甲基丙烯酸甲酯，从而具有均匀尺寸分布的球形聚甲基丙烯酸甲酯粉末。
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公开(公告)号：KR1020030000069A
公开(公告)日：2003-01-06
申请号：KR1020010035694
申请日：2001-06-22
Applicant: 에스케이 인천정유 주식회사 , 한국화학연구원
IPC: B01J29/068 , B01J37/08 , B01J37/02
CPC classification number: B01J37/0009 , B01J29/068 , B01J37/08
Abstract: PURPOSE: A preparation method of dearomatization catalysts for diesel oil is provided, which can keep high dearomatization activity by using platinum, palladium or their mixtures, mesoporous molecular sieve, pseudo-boehmite and acid solutions. The catalyst also enhances yield of liquid hydrocarbon by inhibiting cracking reaction by using mesoporous molecular sieve, enhances activity by well distributing activating component by utilizing merits of large pore size and pore volume of specific surface of mesoporous molecule sieve, and can prevent inactivation caused by coke deposition. CONSTITUTION: The preparation method of dearomatization catalysts for diesel oil comprises the steps of supporting 100 parts by weight of mesoporous molecular sieve with a SiO2/Al2O3 molecular ratio of 30 to 300 and a pore size of 20 to 50 Å with 0.1 to 2.0 parts by weight of platinum, palladium or their mixtures; adding 5 to 50 parts by weight of pseudo boehmite and 0.2 to 3.0 parts by weight of acid solutions, followed by molding; and calcining the molded matter at 300 to 600 deg.C for 4 to 6 hours.
Abstract translation: 目的：提供柴油脱芳构化催化剂的制备方法，通过使用铂，钯或其混合物，介孔分子筛，假勃姆石和酸溶液，可以保持高脱醛活性。 催化剂还通过使用介孔分子筛抑制裂化反应，提高液态烃的产率，通过利用孔隙分子筛比表面积孔径大孔孔体积优良的活性成分，提高活性，可以防止焦炭引起的失活 沉积。 构成：用于柴油的脱芳构化催化剂的制备方法包括以下步骤：将100重量份SiO 2 / Al 2 O 3分子比为30〜300，孔径为20〜50的中孔分子筛与0.1〜2.0份 铂，钯或其混合物的重量; 加入5〜50重量份的假勃姆石和0.2〜3.0重量份的酸溶液，然后成型; 并在300〜600℃下烧成4〜6小时。
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