公开(公告)号：US5145812A

公开(公告)日：1992-09-08

申请号：US747488

申请日：1991-08-19

Applicant: Mikiro Arai ,  Osamu Funayama ,  Hayato Nishii ,  Tamio Ishiyama ,  Hiroshi Kaya ,  Takeshi Isoda ,  Kouichi Yasuda ,  Atsuro Takazawa ,  Tadashi Suzuki ,  Ichiro Kohshi ,  Masaaki Ichiyama ,  Tomohiro Kato

Inventor： Mikiro Arai ,  Osamu Funayama ,  Hayato Nishii ,  Tamio Ishiyama ,  Hiroshi Kaya ,  Takeshi Isoda ,  Kouichi Yasuda ,  Atsuro Takazawa ,  Tadashi Suzuki ,  Ichiro Kohshi ,  Masaaki Ichiyama ,  Tomohiro Kato

IPC: C04B35/589 ,  C04B35/593 ,  C08G79/00

CPC classification number: C04B35/589 ,  C04B35/593 ,  C08G79/00

Abstract: A molded body formed of a silicon nitride-based ceramic containing Si and N and optionally O, C and/or a metal. The ceramic is formed from a polysilazane. A molded body may be a composite body which is composed of a matrix of the ceramic and a reinforcing material such as powder or fiber embedded within the matrix or which is composed of ceramic powder bound with a binder formed of the silicon nitride-based ceramic.

Abstract translation: 由含有Si和N以及任选的O，C和/或金属的氮化硅基陶瓷形成的成型体。 陶瓷由聚硅氮烷形成。 成型体可以是由陶瓷基体和嵌入基体内的粉末或纤维等增强材料构成的复合体，或由与氮化硅系陶瓷形成的粘合剂结合的陶瓷粉末构成的复合体。

公开(公告)号：US4833107A

公开(公告)日：1989-05-23

申请号：US253916

申请日：1988-10-04

Applicant: Hiroshi Kaya ,  Kozaburo Tamura ,  Takeshi Isoda

Inventor： Hiroshi Kaya ,  Kozaburo Tamura ,  Takeshi Isoda

IPC: C04B35/58 ,  C01B21/068 ,  C01B21/082 ,  C04B35/589 ,  D01F9/10

CPC classification number: C04B35/589

Abstract: Fired nitride-base ceramics, i.e., silicon nitride or oxynitride, having a low carbon content and, therefore, low electrical and thermal conductivities, can be produced by heat treating a ceramic precursor comprising polysilazane, polysiloxazane or polycarbosilazane or a mixture thereof as the main ingredient in a reducing atmosphere such as hydrogen, ammonia or a gas containing these components, followed by firing.

Abstract translation: 可以通过热处理包含聚硅氮烷，聚硅氧烷或聚碳硅氮烷或其混合物作为主要的陶瓷前体来生产具有低碳含量，因此具有低电导率和热导率的氮化硅基陶瓷，即氮化硅或氮氧化物 还原气氛如氢气，氨水或含有这些组分的气体，随后进行烧制。

公开(公告)号：US5459114A

公开(公告)日：1995-10-17

申请号：US256807

申请日：1994-07-25

Applicant: Hiroshi Kaya ,  Kiyoshi Sato ,  Hiroki Morozumi ,  Atushi Tezuka ,  Tomoko Aoki ,  Hirohiko Nakahara ,  Tadashi Suzuki ,  Takeshi Isoda

Inventor： Hiroshi Kaya ,  Kiyoshi Sato ,  Hiroki Morozumi ,  Atushi Tezuka ,  Tomoko Aoki ,  Hirohiko Nakahara ,  Tadashi Suzuki ,  Takeshi Isoda

IPC: C04B35/589 ,  C04B35/80 ,  C04B41/45 ,  C04B41/50 ,  C04B41/52 ,  C04B41/81 ,  C04B41/87 ,  C04B41/89 ,  C04B35/58

CPC classification number: C04B41/009 ,  C04B35/589 ,  C04B35/80 ,  C04B35/806 ,  C04B41/4554 ,  C04B41/5053 ,  C04B41/52 ,  C04B41/81 ,  C04B41/87 ,  C04B41/89

Abstract: Repetition of a process of impregnating a metal fiber or ceramic fiber preform or porous ceramic with (3) a mixture of polysilazane-type polymers with a number average molecular weight of 200-3000 and a viscosity adjusted to 100 Pa.s or lower at the impregnation temperature, prepared by mixing (1) one or more types of polysilazane-type polymers with a number average molecular weight of 200-3000 and a viscosity of less than 1 Pa.s at the impregnation temperature with (2) one or more types of polysilazane-type polymers with a number average molecular weight of 200-100,000 and having a viscosity of 1 Pa.s or higher or solid at the impregnation temperature, which are selected from polysilazanes whose main repeating unit is --[(SiH.sub.2).sub.n (NH).sub.r ]-- (where n and r are 1, 2 or 3), and copolymers, modified polymers and crosslinked polymers based thereon, and performing crosslinking curing and then firing, is performed for its conversion into a ceramic. The above polysilazane may be, for example, an inorganic polysilazane, an inorganic polysiloxazane, a polyorgano(hydro)silazane, a modified polysilazane or a polymetallosilazane. By performing the CVD coating before or after said process of impregnation, curing and firing, delamination of the fibers may be minimized.

Abstract translation: PCT No.PCT / JP93 / 01730 Sec。 371日期：1994年7月25日 102（e）日期1994年7月25日PCT提交1993年11月26日PCT公布。 公开号WO94 / 12448 日期：1994年6月9日。重复使用（3）数均分子量为200-3000的聚硅氮烷型聚合物和粘度调节至100的混合物浸渍金属纤维或陶瓷纤维预制体或多孔陶瓷的方法 通过在浸渍温度下混合（1）数均分子量为200-3000和粘度小于1Pa.s的一种或多种聚硅氮烷型聚合物制备的浸渍温度下的Pa.s或更低， （2）一种或多种数均分子量为200-100,000，粘度为1Pa·s或更高的聚硅氮烷型聚合物或浸渍温度下的固体，其选自聚硅氮烷，其主要重复单元为 - [（SiH2）n（NH）r] - （其中n和r为1,2或3），并且基于其进行交联固化，然后进行烧结的共聚物，改性聚合物和交联聚合物进行转化为 陶瓷。 上述聚硅氮烷可以是例如无机聚硅氮烷，无机聚硅氮烷，聚有机（氢）硅氮烷，改性聚硅氮烷或聚金属硅氮烷。 通过在所述浸渍，固化和焙烧过程之前或之后进行CVD涂层，可以使纤维的分层最小化。

公开(公告)号：US5151390A

公开(公告)日：1992-09-29

申请号：US732997

申请日：1991-07-18

Applicant: Hiroyuki Aoki ,  Tadashi Suzuki ,  Toshio Katahata ,  Mutsuo Haino ,  Genshiro Nishimura ,  Hiroshi Kaya ,  Kozaburo Tamura ,  Takeshi Isoda

Inventor： Hiroyuki Aoki ,  Tadashi Suzuki ,  Toshio Katahata ,  Mutsuo Haino ,  Genshiro Nishimura ,  Hiroshi Kaya ,  Kozaburo Tamura ,  Takeshi Isoda

IPC: C04B35/589 ,  C04B35/622 ,  C04B35/80 ,  C08G77/62 ,  C08G79/00 ,  D01F9/10

CPC classification number: D01F9/10 ,  C04B35/589 ,  C04B35/62227 ,  C04B35/80 ,  C08G77/62 ,  C08G79/00 ,  Y10S264/19

Abstract: Inorganic fibers having a high strength and a high modulus of elasticity at a high temperature are provided. The inorganic fibers are amorphous inorganic silicon nitirde-based fibers composed of silicon and nitrogen, optionally with oxygen, carbon and hydrogen, and having atomic ratio between above respective elements of N/Si=0.3 to 3, O/Si=up to 15, C/Si=up to 7 and H/Si=up to 15, wherein ratios of X-ray scattering intensity thereof to that of air at 1.degree. and 0.5.degree. are from 1 to 20 respectively and the silicon nitride-based fiber is still amorphous after heating in an inactive atmosphere at 1200.degree. C. for 1 hour. Composites of a metal, a ceramics, and a high molecular weight organic compound reinforced with the above fibers are also provided.

Abstract translation: 提供了在高温下具有高强度和高弹性模量的无机纤维。 无机纤维是由硅和氮组成的无定形无机硅氮化纤维，任选具有氧，碳和氢，并且上述各个元素之间的原子比为N / Si = 0.3〜3，O / Si = 15， C / Si = 7以下，H / Si = 15以下，其中，1度，0.5度的空气的X射线散射强度比分别为1〜20，氮化硅系纤维仍为 在无活性气氛中在1200℃下加热1小时后无定形。 还提供了用上述纤维增强的金属，陶瓷和高分子量有机化合物的复合材料。

公开(公告)号：US5094993A

公开(公告)日：1992-03-10

申请号：US591357

申请日：1990-10-01

Applicant: Tadashi Miura ,  Ikuo Akizuki ,  Hiroshi Kaya ,  Shohei Okano ,  Takuji Itoh

Inventor： Tadashi Miura ,  Ikuo Akizuki ,  Hiroshi Kaya ,  Shohei Okano ,  Takuji Itoh

IPC: B01J21/04 ,  B01J21/12 ,  B01J35/02 ,  C10G45/12

CPC classification number: B01J35/023 ,  B01J21/04 ,  B01J21/12 ,  C10G45/12

Abstract: Disclosed is a catalyst suitable for hydrotreating hydrocarbonaceous oils which catalyst is comprised of at least one hydrogenative-active metal component supported on a carrier material comprised of about 20 to 60 weight percent of amorphous silica-alumina and about 80 to 40 weight percent of crystalline alumina having an average crystallite size of 35 .ANG., or less.

Abstract translation: 公开了一种适用于加氢处理含烃油的催化剂，该催化剂由至少一种负载在载体材料上的氢化 - 活性金属组分组成，载体材料由约20至60重量％的无定形二氧化硅 - 氧化铝和约80至40重量％的结晶氧化铝 平均微晶尺寸为35，或更小。

公开(公告)号：US4837193A

公开(公告)日：1989-06-06

申请号：US84467

申请日：1987-08-10

Applicant: Ikuo Akizuki ,  Hiroshi Kaya ,  Shohei Okano ,  Nobuo Otake ,  Keiji Kumagai ,  Yoshihito Kaneko

Inventor： Ikuo Akizuki ,  Hiroshi Kaya ,  Shohei Okano ,  Nobuo Otake ,  Keiji Kumagai ,  Yoshihito Kaneko

IPC: C01G45/04 ,  B01J21/12 ,  B01J23/02 ,  B01J23/85 ,  B01J35/10 ,  B01J37/02 ,  C10G45/04 ,  C10G45/06 ,  C10G45/08 ,  C10G45/12

CPC classification number: B01J37/0205 ,  B01J23/85 ,  B01J35/0026 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/108 ,  C10G45/06 ,  C10G45/08 ,  B01J21/12

Abstract: Hydrotreating catalyst comprising silica/alumina or silica/alumina-containing carrier comprising 2 to 35 wt. % silica and Group VIII and/or Group VIB metals as hydrogenation active components is prepared by first step impregnation with at least one Group VIII metal and a second step impregnation with at least one Group VIB metal. Preferably the impregnation is via ion exchange using a complex salt, preferably an ammine or amine salt, of the metal. The carrier is characterized by a maximum of pores in 30 to 100 .ANG. range and a minimum of pores in 0 to 30 .ANG. and in 300 .ANG.+.

Abstract translation: 包含二氧化硅/氧化铝或二氧化硅/氧化铝的载体的加氢处理催化剂包含2-35重量％ 通过用至少一种第Ⅷ族金属的第一步浸渍和用至少一种第ⅥB族金属的第二步浸渍来制备作为氢化活性组分的％二氧化硅和VIII族和/或第ⅥB族金属。 优选地，浸渍通过使用金属的络合盐，优选胺或胺盐进行离子交换。 载体的特征在于在30至100安格姆范围内具有最大的孔隙，并且在0至30安格姆和300安格姆+中具有最小孔隙。