专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US5368640A Transparent iron oxide pigments, processes for their production and their use 失效
标题翻译：透明氧化铁颜料，其制备方法及其用途
公开(公告)号：US5368640A
公开(公告)日：1994-11-29
申请号：US134586
申请日：1993-10-12
申请人： Ulrike Pitzer , Klaus Lerch , Gunter Buxbaum
发明人： Ulrike Pitzer , Klaus Lerch , Gunter Buxbaum
IPC分类号： C01G49/02 , C01G49/06 , C09C1/24 , C09D17/00
CPC分类号： B82Y30/00 , C01G49/06 , C09C1/24 , C01P2004/01 , C01P2004/03 , C01P2004/10 , C01P2004/62 , C01P2004/64 , C01P2006/12 , C01P2006/60
摘要： The invention relates to transparent iron oxide pigments having an average particle size, based on the longest needle axis, of less than 0.1 .mu.m, to processes for their production and to their use for pigmenting lacquers and plastics.
摘要翻译：本发明涉及具有小于0.1μm的基于最长针轴的平均粒径的透明氧化铁颜料与其制备方法及其用于着色漆和塑料的用途。

32. 发明授权

US5202043A Process for the preparation of isometric magnetic iron oxide 失效
标题翻译：等离子体磁性氧化铁的制备方法
公开(公告)号：US5202043A
公开(公告)日：1993-04-13
申请号：US267978
申请日：1988-11-07
申请人： Jurgen Wiese , Gunter Buxbaum , Wilfried Burow
发明人： Jurgen Wiese , Gunter Buxbaum , Wilfried Burow
IPC分类号： C01G49/02 , C09C1/24 , G11B5/706
CPC分类号： B82Y30/00 , C01G49/02 , C09C1/24 , G11B5/70673 , G11B5/70694 , C01P2002/60 , C01P2004/64 , C01P2006/12 , C01P2006/42
摘要： Isometric iron oxide pigments are prepared by an improved process by precipitation of aqueous solutions containing iron (II) salts with alkaline precipitating agents followed by oxidation of the precipitate at temperatures of from 20.degree. C. to 100.degree. C., wherein the improvement comprises adjusting the iron (III) content to 1 to 25 mol %, based on the total iron, before precipitation.
摘要翻译：等离子体氧化铁颜料通过改进的方法制备，通过用碱性沉淀剂沉淀含铁（II）盐的水溶液，然后在20℃至100℃的温度下将沉淀物氧化，其中改进包括调节铁（III）含量在沉淀前为1〜25mol％，以总铁为主。

33. 发明授权

US5164005A Black manganese/iron oxide pigment a process for its production and its use 失效
标题翻译：黑色锰/氧化铁颜料其生产工艺及其使用
公开(公告)号：US5164005A
公开(公告)日：1992-11-17
申请号：US853886
申请日：1992-03-18
申请人： Peter Kuske , Gunter Buxbaum
发明人： Peter Kuske , Gunter Buxbaum
IPC分类号： C01G49/00 , C01G49/08 , C04B14/30 , C04B14/36 , C09C1/22
CPC分类号： C09C1/22 , C01G49/00 , C04B14/30 , C01P2002/32 , C04B2103/54
摘要： A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps:a) oxidizing iron(II) salts or mixtures of iron(II) salts and manganese(II) salts, in solution or after reaction with alkaline precipitants, with manganese dioxide or other compounds containing manganese in high valency,b) additionally oxidizing the salts of (a) to establish an Fe(III) content therein with another oxidizing agent, andc) filtering, washing, drying and grinding the pigment;and the pigment is useful for pigmenting building materials to a black color.

34. 发明授权

US5076848A Process for the preparation of iron yellow pigments 失效
标题翻译：制备黄铜色素的方法
公开(公告)号：US5076848A
公开(公告)日：1991-12-31
申请号：US484528
申请日：1990-02-26
申请人： Bernd Krockert , Helmut Printzen , Gunter Buxbaum
发明人： Bernd Krockert , Helmut Printzen , Gunter Buxbaum
IPC分类号： C01G49/02 , C01G49/06 , C09C1/22 , C09C1/24
CPC分类号： C09C1/24 , C01G49/06 , C01P2006/62 , C01P2006/63 , C01P2006/64 , C01P2006/65
摘要： An improved process is disclosed for preparing iron yellow pigments from iron--(II) salt solutions, in the presence of iron scrap, by injection of air at elevated temperatures. After formation of the pigment, the reaction suspension is stirred without additional gas injection, whereby lighter, purer yellow pigments are obtained.
摘要翻译：公开了一种改进的方法，用于在铁废料存在下，通过在升高的温度下注入空气来制备铁 - （II）盐溶液中的铁黄颜料。在形成颜料之后，将反应悬浮液搅拌而无需另外注入气体，由此获得更浅的纯黄色颜料。

35. 发明授权

US5028269A Co-containing magnetic pigments, processes for the production thereof and the use thereof 失效
标题翻译：含钴磁性颜料，其制备方法及其用途
公开(公告)号：US5028269A
公开(公告)日：1991-07-02
申请号：US488933
申请日：1990-03-05
申请人： Gunter Buxbaum , Jurgen Wiese , Peter Kiemle , Aloys Eiling
发明人： Gunter Buxbaum , Jurgen Wiese , Peter Kiemle , Aloys Eiling
IPC分类号： C01G49/00 , C08K3/22 , C09D5/23 , C09D7/12 , G11B5/706 , G11B5/842 , H01F1/11
CPC分类号： G11B5/70673 , Y10S428/90
摘要： Acicular magnetic iron oxide pigments are disclosed which have a Co content of 1 to 5% by weight and an FeO content of 5 to 12% by weight. The pigments may optionally contain an additional dopant selected from zinc, phosphate and SiO.sub.2. The pigments are useful in magnetic recording media such as video tapes.
摘要翻译：公开了具有1至5重量％的Co含量和5至12重量％的FeO含量的针状磁性氧化铁颜料。颜料可以任选地含有选自锌，磷酸盐和SiO 2的另外的掺杂剂。颜料可用于录像带等磁记录媒体。

36. 发明授权

US4773938A Finely divided isometric hexaferrite pigments with a W-structure, processes for their preparation and their use 失效
标题翻译：具有W结构的细分等轴六方晶系颜料，其制备方法及其用途
公开(公告)号：US4773938A
公开(公告)日：1988-09-27
申请号：US918574
申请日：1986-10-14
申请人： Gunter Buxbaum , Ulrich Meisen , Florian Haberey
发明人： Gunter Buxbaum , Ulrich Meisen , Florian Haberey
IPC分类号： C01G49/00 , C04B35/26 , C09C1/22 , C09C1/24 , G11B5/706 , H01F1/11 , C04B14/00
CPC分类号： C04B35/2608 , C01G49/009 , C04B35/2633 , C09C1/22 , G11B5/70678 , C01P2002/32 , C01P2004/03 , C01P2004/20 , C01P2004/54 , C01P2006/42
摘要： Finely divided magnetic particles of hexaferrite pigments with a W-structure having the compositionE.sub.x M.sub.m (I) M.sub.n (II) Fe.sub.18 -(m+n)O.sub.27-y D.sub.ywhereinE is at least one element from the group comprising alkaline earth metals, alkali metals, lanthanides or lead,M(I) and M(II) are independently at least element from the group comprising metals or semi-metals andD is at least one element from the group of halogens and chalcogens and0.8.ltoreq.x.ltoreq.1.2,1.0.ltoreq.m.ltoreq.3.0,0.ltoreq.n.ltoreq.8.0,0.ltoreq.y.ltoreq.5.0 andn is the same as y when n>0with the proviso that electroneutrality is preserved,and wherein the hexaferrite pigment particles have substantially the same dimensions in all directions in space are useful in producing magnetic recording media, such as tapes, and are produced by melting a mixture of (=i) metal oxides, hydroxides, hydroxyoxides, carbonates, nitrates or mixtures thereof corresponding to the composition of the W-hexaferrite pigments together with (ii) boron oxide, boric acid, metal borates, SiO.sub.2 or mixtures thereof at temperatures of from 1100.degree. to 1450.degree. C. and then chilling the melt obtained to .ltoreq.600.degree. C. and then tempering the chilled melt at temperatures of from 1000.degree. to 1400.degree. C. for 1 second to 2 hours.
摘要翻译：具有组成为Ex Mm（I）Mn（II）Fe18-（m + n）O27-yDy的W结构的六方晶系颜料的细分磁性颗粒，其中E是至少一种元素，包括碱土金属，碱金属，镧系元素或铅，M（I）和M（II）独立地是至少包含金属或半金属的元素，D是来自卤素和硫属元素的至少一种元素，当n> 0时，n与y相同，条件是电中性是（i = 0）= 1.0，并且其中六方晶系颜料颗粒在空间中在所有方向上具有基本相同的尺寸可用于制造磁记录介质，例如带，并且通过熔融（= i）金属氧化物，氢氧化物，羟基氧化物，碳酸酯的混合物，硝酸盐或其混合物，其与W-六铁素体颜料的组成以及（ii）氧化硼，硼酸，金属硼酸盐，SiO 2或其混合物，然后将所获得的熔体冷却至600℃，然后在1000-1400℃的温度下回火冷却的熔体1秒至 2小时。

37. 发明授权

US4470844A Agglomerated ferromagnetic iron particles 失效
标题翻译：聚集铁磁铁颗粒
公开(公告)号：US4470844A
公开(公告)日：1984-09-11
申请号：US324915
申请日：1981-11-25
申请人： Jakob Rademachers , Rolf Naumann , Hans-Peter Biermann , Gunter Buxbaum , Wolfgang Rambold
发明人： Jakob Rademachers , Rolf Naumann , Hans-Peter Biermann , Gunter Buxbaum , Wolfgang Rambold
IPC分类号： B22F1/00 , B22F9/04 , C09D5/23 , C09D7/12 , G11B5/62 , G11B5/706 , H01F1/06 , C22C1/04
CPC分类号： B22F1/0096 , G11B5/70621 , H01F1/061
摘要： Spherical agglomerates of surface-stabilized primary particles substantially consisting of iron, having a BET surface of about 5 to 50 m.sup.2 /g, measured on the agglomerate, in non-pyrophoric form and having a bulk density of about 0.5 to 2.0 kg/l and an agglomerate diameter of about 0.5 to 10 mm are produced by(a) reducing in dry phase particles consisting essentially of iron oxide,(b) intensively dispersing the particles in liquid phase,(c) coating the particles with an inorganic and/or organic coating optionally containing corrosion inhibitors,(d) separating the particles from the liquid phase by evaporating the volatile components with a continuously rotating and simultaneously tumbling movement, and(e) subjecting the resulting granulates to a thermal treatment. The particles are especially useful for the production of magnetic recording media.
摘要翻译：基本上由铁组成的表面稳定的一次粒子的球形附聚物，具有约5至50m 2 / g的BET表面积，在附聚物上以非自燃形式测量，堆积密度为约0.5至2.0kg / l，通过（a）在干相中还原基本上由氧化铁组成的颗粒，（b）将颗粒集中分散在液相中，（c）用无机和/或有机物涂覆颗粒，产生约0.5至10mm的团块直径任选地含有腐蚀抑制剂的涂层，（d）通过以连续旋转和同时翻转的运动蒸发挥发性组分，和（e）使所得颗粒经受热处理，从而将颗粒与液相分离。颗粒对于制造磁记录介质特别有用。

38. 发明授权

US4297395A Production of cobalt-doped ferrimagnetic iron oxides 失效
标题翻译：钴掺杂铁磁性氧化铁的生产
公开(公告)号：US4297395A
公开(公告)日：1981-10-27
申请号：US110876
申请日：1980-01-10
申请人： Gunter Buxbaum , Heinrich-Christian Schopper , Lutz Leitner , Volker Hahnkamm
发明人： Gunter Buxbaum , Heinrich-Christian Schopper , Lutz Leitner , Volker Hahnkamm
IPC分类号： C01G49/02 , C01G49/00 , C09D5/23 , C09D7/12 , G11B5/70 , G11B5/706 , H01F1/10 , H01F1/11
CPC分类号： G11B5/70694
摘要： A cobalt-doped, acicular ferrimagnetic iron oxide having an FeO content of about 16 to 24%, by weight, and a cobalt content of about 0.7 to 2.4%, by weight, the coercive force amounting to at least about 425 Oe+175 Oe/%, by weight, of Co is produced by precipitating and oxidizing a cobalt-containing aqueous iron (ii) salt solution, reducing the precipitate to Fe.sub.3 O.sub.4, partially reoxidizing to adjust the FeO content and heat treating under inert conditions at a temperature from about 600.degree. to 800.degree. C.
摘要翻译：钴掺杂的针状亚铁磁性氧化铁，其FeO含量为约16至24重量％，钴含量为约0.7至2.4重量％，矫顽力为至少约425Oe + 175Oe /重量％的Co通过沉淀和氧化含钴的铁水（ii）盐溶液而产生，将沉淀物还原成Fe 3 O 4，部分再氧化以调节FeO含量并在惰性条件下在约 600〜800℃

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式