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公开(公告)号：KR1020000073209A
公开(公告)日：2000-12-05
申请号：KR1019990016360
申请日：1999-05-07
Applicant: 한국과학기술연구원
CPC classification number: C05G3/0082 , C05G3/0029
Abstract: PURPOSE: A manufacturing method of prolonged action granular fertilizer is provided to improve heat resistance and durability by using a coating material mainly composed of rosin derivatives containing zinc with having an initial melting point of 75°C or higher. CONSTITUTION: An initial coating material is mixed 70-98 wt.% of rosin derivatives containing zinc with having an initial melting point of 75°C or higher, and 2-30 wt.% of propenic acid polymer, and then is dissolved in an organic solvent to be the concentration of 1-50 wt.%. The initial coating material is basically coated to be 2-30 wt.% compared to granular fertilizer. A mixture contains 30-85 wt.% of rosin derivatives and 15-70 wt.% of thermoplastic resin having the hardening temperature of 90°C or higher. A protective film is manufactured by dissolving in the organic solvent to be 1-50 wt.% concentration. The mixture is protectively coated to be 2-10 wt.% compared to basically coated granular fertilizer and is heat-treated until the hardening of the thermoplastic resin is completed.
Abstract translation: 目的：提供延长作用颗粒肥料的制造方法，通过使用主要由含锌的松香衍生物形成的初始熔点为75℃以上的涂料，提高耐热性和耐久性。 构成：将初始涂料混合70-98重量％的含锌初始熔点为75℃以上的松香衍生物和2-30重量％的丙烯酸聚合物，然后溶于 有机溶剂的浓度为1-50重量％。 与颗粒肥料相比，初始涂料基本上涂覆至2-30重量％。 混合物含有30-85重量％的松香衍生物和15-70重量％的硬化温度为90℃或更高的热塑性树脂。 通过将有机溶剂溶解在1-50重量％的浓度来制造保护膜。 与基本涂覆的颗粒肥料相比，该保护涂层被保护涂层为2-10重量％，并进行热处理，直到热塑性树脂硬化完成。
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公开(公告)号：KR1020000051068A
公开(公告)日：2000-08-16
申请号：KR1019990001306
申请日：1999-01-18
Applicant: 한국과학기술연구원
IPC: C01G23/00
CPC classification number: C01G23/006 , C01P2004/64
Abstract: PURPOSE: A process for producing barium titanate powder by the hydrothermal reaction of a titanium organic metal compound with a barium salt is provided which gives the superfine powder having a mean particle size of 20 to 30 nm and being excellent in crystallinity. CONSTITUTION: A process comprises preparing a sol precursor using titanium acylate and a barium compound, co-precipitating by injecting the sol precursor to a concentrated alkali solution at a pH higher than 13, crystallizing barium titanate powder from the precipitating solution and purifying through washing processes to obtain superfine particles of crystalline barium titanate useful in the field of electronics. In future, by applying the superfine barium titanate powder to the field of electronic, information and communication, in particular a laminated capacitor, a barium titanate layer it will improve product quality and reduce the production cost.
Abstract translation: 目的：提供通过钛有机金属化合物与钡盐的水热反应制备钛酸钡粉末的方法，其得到平均粒度为20〜30nm的超细粉末，结晶性优异。 方法：一种方法包括使用钛酸酯和钡化合物制备溶胶前体，通过将溶胶前体注入到高于13的pH的浓碱溶液中共沉淀，从沉淀溶液中结晶钛酸钡粉末并通过洗涤方法纯化 以获得可用于电子领域的结晶钛酸钡的超微粒子。 将来，通过将超细钛酸钡粉末应用于电子，信息通信领域，特别是叠层电容器，钛酸钡层将提高产品质量并降低生产成本。
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公开(公告)号：KR1020000013452A
公开(公告)日：2000-03-06
申请号：KR1019980032319
申请日：1998-08-08
Applicant: 한국과학기술연구원 , 에스케이케미칼 주식회사
IPC: C07C15/24
Abstract: PURPOSE: A dimethylnaphthalene, especially 2,6-dimethylnaphthalene is prepared by transmethylating a mixture of naphthalene and 2-methylnaphthalene in the presence of a lewis acid catalyst. CONSTITUTION: A method for preparing 2,6-dimethylnaphthalene comprises reacting a mixture of naphthalene and 2-methylnaphthalene at the mixing ratio of 0.03 to 20 with tetramethylbenzene in the presence of aluminum chloride as a catalyst in a halogenated hydrocarbon solvent at the room temperature, the halogenated hydrocarbon solvent being selected from the group consisting of dichloromethane, benzyl chloride, and mixtures thereof.
Abstract translation: 目的：在路易斯酸催化剂存在下，通过萘甲酸和2-甲基萘的混合物的甲基化来制备二甲基萘，特别是2,6-二甲基萘。 构成：制备2,6-二甲基萘的方法包括在室温下在氯化铝作为催化剂的存在下，在0.03〜20的混合比例下与四甲基苯反应，在卤代烃溶剂中， 所述卤代烃溶剂选自二氯甲烷，苄基氯及其混合物。
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公开(公告)号：KR100219840B1
公开(公告)日：1999-09-01
申请号：KR1019970019525
申请日：1997-05-20
Applicant: 한국과학기술연구원
IPC: B01D71/00
Abstract: 본 발명은 유기 알루미늄 화합물 전구체 및 액상으로 존재하여 다루기 쉽고도 증착 과정중에 리간드의 열분해로 인한 탄소오염이 없는, 알루미나 증착을 위한 유기 알루미늄 화합물 전구체로서 (베타-케토에스테르)-(알콕사이드)-알루미늄 화합물을 화학기상증착법을 사용하여 미세 기공구조를 갖는 고순도 알루미나 분리막을 제조하는 방법을 제공한다.
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公开(公告)号：KR1019980083979A
公开(公告)日：1998-12-05
申请号：KR1019970019525
申请日：1997-05-20
Applicant: 한국과학기술연구원
IPC: B01D71/00
Abstract: 본 발명은 유기 알루미늄 화합물 전구체 및 액상으로 존재하여 다루기 쉽고도 증착 과정중에 리간드의 열분해로 인한 탄소오염이 없는, 알루미나 증착을 위한 유기 알루미늄 화합물 전구체로서 (베타-케토에스테르)-(알콕사이드)-알루미늄 화합물을 화학기상증착법을 사용하여 미세 기공구조를 갖는 고순도 알루미나 분리막을 제조하는 방법을 제공한다.
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Patent Agency Ranking
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公开(公告)号：KR1019960004392B1
公开(公告)日：1996-04-02
申请号：KR1019930007625
申请日：1993-05-04
Applicant: 한국과학기술연구원
IPC: C04B35/44
Abstract: The microporous ceramic film is manufactured by (a) preparing a precursor by substituting beta diketone for alkoxide ligand of metallic alkoxide such as aluminum family alkoxide and transition metallic alkoxide, (b) hydrolysing the precursor with isopropanol, n-propanol or n-butanol as a solvent and nitric acid solution, (c) polymerizing it to obtain sol with below 3mm small particle size, (d) gelating this sol and sintering it at 150-600 deg.C. Beta diketone comprises one of alkyl acetoacetate having alkyl of C1-C6, 2,4-alkanediol and 3,5-alkanediol having alkyl of C1-C6, respectively.
Abstract translation: 微孔陶瓷膜是通过（a）通过用β二酮代替金属醇盐的醇盐配体如铝族醇盐和过渡金属醇盐来制备前体，（b）用异丙醇，正丙醇或正丁醇水解前体， 溶剂和硝酸溶液，（c）使其聚合以获得具有3mm以下小粒径的溶胶，（d）将该溶胶凝胶化并在150-600℃下烧结。 β-二酮包括具有分别具有C1-C6烷基的C1-C6,2,4-链烷二醇和3,5-链烷二醇的烷基乙酰乙酸酯之一。
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公开(公告)号：KR1019950009445B1
公开(公告)日：1995-08-22
申请号：KR1019930005061
申请日：1993-03-30
Applicant: 한국과학기술연구원
IPC: C23C16/00
Abstract: The method comprises depositing the vapor of copper on a substrate, using a copper beta-keto ester compound as a precursor. A thin film of copper is obtained without heat cracking during vapor deposition.
Abstract translation: 该方法包括使用铜β-酮酯化合物作为前体将铜的蒸气沉积在基底上。 在蒸镀时不产生热裂解的铜薄膜。
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