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1. 发明授权

US5205950A Process for preparing iron carbide fine particles 失效
标题翻译：制备碳化硅微粒的方法
公开(公告)号：US5205950A
公开(公告)日：1993-04-27
申请号：US723887
申请日：1991-07-01
申请人： Yoshiyuki Shibuya , Naoki Miyamoto , Shigeo Daimon
发明人： Yoshiyuki Shibuya , Naoki Miyamoto , Shigeo Daimon
IPC分类号： C01B31/30 , G11B5/706 , H01F1/11
CPC分类号： G11B5/70615 , C01B31/303 , C01P2002/72 , C01P2004/54 , C01P2004/61 , C01P2004/62
摘要： The present invention provides a process for preparing iron carbide fine particles having an average particle size (long axis) of 0.1 to 2 .mu.m and an average axial ratio of 3 to 20, which comprises,(a) optionally contacting an iron compound selected from the group consisting of iron oxyhydroxide fine particles and iron oxide fine particles with a reducing agent which does not contain carbon atom, the iron compound being, prior to the above contact, coated with iron compound or iron compound and cobalt compound, and with aluminum compound or silicon compound, and(b) contacting the iron compound of the above (a) with a reducing-and-carburizing agent containing carbon atom or a mixture thereof with a reducing agent which does not contain carbon atom.

2. 发明授权

US5104561A Process for preparing carbide fine particles 失效
标题翻译：制备碳化硅颗粒的方法
公开(公告)号：US5104561A
公开(公告)日：1992-04-14
申请号：US617294
申请日：1990-11-19
申请人： Ikuo Kitamura , Yoshiyuki Shibuya , Takashi Shibanuma , Shigeo Daimon
发明人： Ikuo Kitamura , Yoshiyuki Shibuya , Takashi Shibanuma , Shigeo Daimon
IPC分类号： C01B31/30 , H01F1/11
CPC分类号： H01F1/11 , C01B31/301 , C01P2002/72 , C01P2002/88 , C01P2006/42 , C01P2006/80
摘要： Fine iron carbide particles consisting essentially of iron carbide, which are characterized in that, in the step of the variation of the weight under the condition of combustion, the increase of the weight in the equilibrium after arrival at the maximum weight is 22% or less, on the basis of the weight before combustion.

3. 发明授权

US5552072A Coated acicular fine particulate materials, processes for preparing same and use thereof 失效
标题翻译：涂覆的针状细颗粒材料，其制备方法及其用途
公开(公告)号：US5552072A
公开(公告)日：1996-09-03
申请号：US318877
申请日：1994-10-18
申请人： Takuya Arase , Fumihiro Kamiya , Masayuki Tsuji , Tadashi Ino , Ikuo Kitamura , Yoshiyuki Shibuya , Shigeo Daimon
发明人： Takuya Arase , Fumihiro Kamiya , Masayuki Tsuji , Tadashi Ino , Ikuo Kitamura , Yoshiyuki Shibuya , Shigeo Daimon
IPC分类号： B22F1/00 , C01B31/30 , G11B5/706 , C04B35/00
CPC分类号： B22F1/004 , C01B31/301 , G11B5/706 , G11B5/70605 , G11B5/70615 , C01P2004/10 , C01P2004/54 , C01P2004/62 , C01P2004/80 , C01P2006/42 , C01P2006/80 , Y10T428/2991
摘要： An acicular fine particulate material which is coated with a compound containing at least one element selected from among elements of Groups III and IV of the Periodic Table in Periods 5 and 6, the acicular fine particulate material being one of (i) an acicular fine particulate material containing iron carbide, (ii) an acicular fine particulate material containing iron carbide, metallic iron and carbon, and (iii) an acicular fine particulate metallic iron containing carbon, is prepared by a promoted reduction reaction while being effectively prevented from sintering and consequently affords magnetic recording media having a high recording density.
摘要翻译： PCT No.PCT / JP94 / 00242 Sec。 371日期：1994年10月18日 102（e）日期1994年10月18日PCT 1994年2月17日PCT PCT。公开号WO94 / 19276 日期1994年9月1日针对在第5和6周期中涂覆有选自元素周期表第III和IV族元素中的至少一种元素的化合物的针状细颗粒材料，针状细颗粒材料是（i ）含有碳化铁的针状细颗粒材料，（ii）含有碳化铁，金属铁和碳的针状细颗粒材料和（iii）通过促进还原反应而有效地制备含有碳的针状细颗粒金属铁防止烧结，从而提供具有高记录密度的磁记录介质。

4. 发明授权

US5346758A Magnetic coating composition and magnetic recording medium 失效
标题翻译：磁性涂料组合物和磁记录介质
公开(公告)号：US5346758A
公开(公告)日：1994-09-13
申请号：US935083
申请日：1986-11-24
申请人： Yoshiyuki Shibuya , Shigeo Daimon , Kazuo Okamura
发明人： Yoshiyuki Shibuya , Shigeo Daimon , Kazuo Okamura
IPC分类号： C09D5/23 , C08K3/10 , G11B5/706 , G11B5/00
CPC分类号： G11B5/70668 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/2991 , Y10T428/30
摘要： A magnetic coating composition comprising acicular particles containing iron carbide and a main magnetic material.
摘要翻译：一种磁性涂料组合物，其包含含有碳化铁的针状颗粒和主要磁性材料。

5. 发明授权

US5660927A Acicular metal iron fine particles, process for preparing same, magnetic coating composition and magnetic recording medium containing same 失效
标题翻译：针状金属铁微粒，其制备方法，磁性涂料组合物和含有其的磁记录介质
公开(公告)号：US5660927A
公开(公告)日：1997-08-26
申请号：US281657
申请日：1994-07-28
申请人： Takuya Arase , Yoshiyuki Shibuya , Ikuo Kitamura , Shigeo Daimon
发明人： Takuya Arase , Yoshiyuki Shibuya , Ikuo Kitamura , Shigeo Daimon
IPC分类号： G11B5/706 , G11B5/714 , G11B5/66
CPC分类号： G11B5/70626 , G11B5/70615 , G11B5/714 , Y10S428/90 , Y10T428/256 , Y10T428/257
摘要： The present invention provides acicular fine particles made up of iron and carbon, and these acicular metal iron fine particles can be prepared by contacting acicular iron carbide fine particles with a reducing agent containing no carbon atom. Further, the present invention provides a magnetic coating composition and magnetic recording medium containing the above acicular metal iron fine particles.
摘要翻译：本发明提供由铁和碳构成的针状细颗粒，并且可以通过使针状碳化铁微粒与不含碳原子的还原剂接触来制备这些针状金属铁微粒。此外，本发明提供一种磁性涂料组合物和含有上述针状金属铁微粒的磁记录介质。

6. 发明授权

US4900464A Particles containing iron carbide 失效
标题翻译：含有碳化铁的颗粒
公开(公告)号：US4900464A
公开(公告)日：1990-02-13
申请号：US944163
申请日：1986-12-22
申请人： Takuya Arase , Yoshiyuki Shibuya , Shigeo Daimon
发明人： Takuya Arase , Yoshiyuki Shibuya , Shigeo Daimon
IPC分类号： B01J27/22 , C01B31/30 , G11B5/706
CPC分类号： B01J27/22 , C01B31/301 , G11B5/70615 , G11B5/70626 , G11B5/70642 , C01P2002/72 , C01P2002/77 , C01P2004/10 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2006/42 , C01P2006/80
摘要： The present invention provides acicular particles (A) containing an iron carbide, which have (a) a free carbon content of at most 20 wt. %, and (b) an Fe.sub.5 C.sub.2 ratio(x) of at least 70% and a coercive force of 3x+300 to 7x+270 Oe, the ratio(x) being expressed by ##EQU1## wherein S1 is the X-ray diffraction strength of Fe.sub.5 C.sub.2, and S2 is the X-ray diffraction strength of Fe.sub.3 O.sub.4. The invention further provides particles (B) containing nickel and an iron carbide. The invention further provides acicular particles containing an iron carbide which are obtained by heating an aqueous dispersion of ferric hydroxide in an alkaline system in the presence of a water-soluble compound capable of coordinating to iron to obtain acicular .alpha.-ferric oxide and contacting the product with a carbon-containing reducing-and-carburizing agent or with a mixture of the agent and a carbon-free reducing agent, with or without contacting the product with the carbon-free reducing agent. These particles (A) to (C) are controllable in coercive force and usable for magnetic record media of various standards.

7. 发明授权

US4457955A Process for producing magnetizable particles 失效
标题翻译：生产可磁化颗粒的方法
公开(公告)号：US4457955A
公开(公告)日：1984-07-03
申请号：US454325
申请日：1982-12-29
申请人： Kazuo Okamura , Kohji Tamura , Shigeo Daimon , Yoshiyuki Shibuya
发明人： Kazuo Okamura , Kohji Tamura , Shigeo Daimon , Yoshiyuki Shibuya
IPC分类号： C01G51/00 , G11B5/706 , C01G49/06 , C01G49/08
CPC分类号： C01G51/00 , C01G49/00 , C01G49/06 , G11B5/70673 , C01P2002/54 , C01P2006/42
摘要： A process for producing cobalt-modified iron oxide particles, which comprises the steps of:(1) adding to magnetic iron oxide particles(a) a cobalt compound,(b) an iron component which is either (b.sub.1) a ferric compound at an atomic ratio to the cobalt compound in the range of 0.68 to 2 or (b.sub.2) a combination of a ferrous compound and a ferric compound, and(c) an alkali at a concentration enough to cause the cobalt and iron to precipitate as hydroxides; and(2) heating the mixture at a temperature of at least 50.degree. C. and not higher than the reflux temperature thereof in a non-oxidizing atmosphere.
摘要翻译：一种生产钴改性氧化铁颗粒的方法，包括以下步骤：（1）向磁性氧化铁颗粒（a）中加入钴化合物，（b）铁组分，其中（b1）与钴化合物的原子比在0.68〜2的范围内，或（b2）亚铁化合物与三价铁化合物的组合，（c）以足以引起钴和铁作为氢氧化物析出的浓度的碱; 和（2）在非氧化性气氛中，在至少50℃，不高于其回流温度的温度下加热混合物。

8. 发明授权

US5437805A Particles containing iron carbide 失效
标题翻译：含有碳化铁的颗粒
公开(公告)号：US5437805A
公开(公告)日：1995-08-01
申请号：US134873
申请日：1993-10-12
申请人： Takuya Arase , Yoshiyuki Shibuya , Shigeo Daimon
发明人： Takuya Arase , Yoshiyuki Shibuya , Shigeo Daimon
IPC分类号： B01J27/22 , C01B31/30 , G11B5/706
CPC分类号： B01J27/22 , C01B31/301 , G11B5/70615 , G11B5/70626 , G11B5/70642 , C01P2002/72 , C01P2002/77 , C01P2004/10 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2006/42 , C01P2006/80
摘要： The present invention provides acicular particles (A) containing an iron carbide, which have (a) a free carbon content of at most 20 wt. %, and (b) and Fe.sub.5 C.sub.2 ratio(x) of at least 70% and a coercive force of 3.times.+300 to 7.times.+270 Oe, the ratio(x) being expressed by ##EQU1## where S1 is the X-ray diffraction strength of Fe.sub.5 C.sub.2, and S2 is the X-ray diffraction strength of Fe.sub.3 O.sub.4.The invention further provides particles (B) containing nickel and an iron carbide.The invention further provides acicular particles containing an iron carbide which are obtained by heating an aqueous dispersion of ferric hydroxide in an alkaline system in the presence of a water-soluble compound capable of coordinating to iron to obtain acicular .alpha.-ferric oxide and contacting the product with a carbon-containing reducing-and-carburizing agent or with a mixture of the agent and a carbon-free reducing agent, with or without contacting the product with the carbon-free reducing agent.These particles (A) and (C) are controllable in coercive force and usable for magnetic record media of various standards.
摘要翻译：本发明提供了含有碳化铁的针状粒子（A），其具有（a）游离碳含量至多为20重量％％，（b）和Fe5C2比（x）至少为70％，矫顽力为3x + 300〜7×270ee，比例（x）由表示，其中S1为X射线衍射 Fe5C2的强度，S2是Fe3O4的X射线衍射强度。本发明还提供含有镍和碳化铁的颗粒（B）。本发明还提供了含有碳化铁的针状颗粒，其通过在碱性体系中在能够与铁配位的水溶性化合物的存在下加热氢氧化铁的水分散体而获得，得到针状的α-氧化铁并与产物接触与含碳还原和渗碳剂或与该试剂和不含碳的还原剂的混合物，与或不使该产物与无碳还原剂接触。这些颗粒（A）和（C）在矫顽力方面是可控的，可用于各种标准的磁记录介质。

9. 发明授权

US4339518A Process of electrostatic printing with fluorinated polymer toner additive 失效
标题翻译：含氟聚合物调色剂添加剂的静电印刷工艺
公开(公告)号：US4339518A
公开(公告)日：1982-07-13
申请号：US195076
申请日：1980-10-08
申请人： Kazuo Okamura , Shigeo Daimon , Nobuyuki Tomihashi
发明人： Kazuo Okamura , Shigeo Daimon , Nobuyuki Tomihashi
IPC分类号： G03G9/087 , G03G13/22 , G03G13/26 , G03G13/16
CPC分类号： G03G9/08791 , G03G13/22 , G03G13/26 , G03G9/0872 , G03G9/08728
摘要： A process of electrostatic printing which comprises the steps of forming a reverse image of a dielectric toner on an electroconductive support or a photoconductive support, fixing the reverse image to give an electrostatic printing master sheet, and conducting electrostatic printing in which electrification of the dielectric toner image on the master sheet, development with a toner, transfer of the resulting toner image to a material to be printed and fixing are repeatedly carried out to give numerous sheets of duplicates.
摘要翻译：一种静电印刷方法，其包括以下步骤：在导电载体或光电导载体上形成电介质调色剂的反向图像，固定反转图像以产生静电印刷母版，并进行静电印刷，其中介电调色剂在母版上的图像，用调色剂显影，将所得到的调色剂图像转印到待印刷和定影的材料上，重复进行以产生多张复制品。

10. 发明授权

US4255299A Polymer containing perfluoroalkyl group, process for preparing the same and coating composition 失效
标题翻译：含全氟烷基的聚合物，其制备方法和涂料组合物
公开(公告)号：US4255299A
公开(公告)日：1981-03-10
申请号：US105259
申请日：1979-12-19
申请人： Shigeo Daimon , Kazuo Okamura
发明人： Shigeo Daimon , Kazuo Okamura
IPC分类号： B08B3/08 , B01D12/00 , C08F8/18 , C08F8/30 , C08F8/34 , C08F8/24 , C08F222/06
CPC分类号： C08F8/34 , C08F8/18 , C08F8/30
摘要： A polymer containing perfluoroalkyl group in its side chain which is an addition reaction product of a polymer having the following general formula: ##STR1## wherein R is phenyl group or alkoxyl group having 1 to 12 carbon atoms, R.sup.1 is alkyl group having 1 to 12 carbon atoms, and n is an integer of 10 to 2,000, with an epoxy compound selected from the group consisting of ##STR2## wherein R.sub.f is perfluoroalkyl group having 3 to 20 carbon atoms and R.sup.2 is alkyl group having 1 to 12 carbon atoms, the addition reaction product containing 0.1 to 50% by mole of the group derived from the epoxy compound having the formulae (IIa) to (IIc) per 1 mole of the recurring unit of the polymer having the formula (I). The polymer is good in compatibility with film-forming resins and solvents and improves the leveling property of a coating composition when incorporated thereinto and the surface smoothness of the film obtained from the composition.
摘要翻译：在其侧链中含有全氟烷基的聚合物，其是具有以下通式的聚合物的加成反应产物：其中R是苯基或具有1至12个碳原子的烷氧基，其中R1是具有 1〜12个碳原子，n为10〜2,000的整数，选自由下列组成的组的环氧化合物：（IIa）（IIb）和（IIc）其中Rf是全氟烷基碳原子数为3〜20，R 2为碳原子数1〜12的烷基，加成反应产物相对于每1摩尔含有式（IIa）〜（IIc）的环氧化合物的基团为0.1〜50摩尔％的具有式（I）的聚合物的重复单元。该聚合物与成膜树脂和溶剂的相容性良好，并且当结合到涂料组合物中时改善涂料组合物的流平性和由组合物获得的膜的表面平滑度。

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