公开(公告)号：CA1324231C

公开(公告)日：1993-11-09

申请号：CA586800

申请日：1988-12-22

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  GERDAU THOMAS ,  PEUCKERT MARCELLUS ,  BRUECK MARTIN

IPC: C04B35/58 ,  C04B35/589 ,  C08G77/48 ,  C08G77/62 ,  D01F9/10

Abstract: of the disclosure Polymeric hydridosilazanes, processes for the preparation thereof, silicon nitride-containing ceramic materials which can be prepared therefrom, and the preparation thereof The invention relates to novel polymeric hydridosilazanes, their preparation, their conversion into silicon nitridecontaining ceramic material, and this material itself. To prepare the polymeric hydridosilazanes, polymeric hydridothiosilazanes are reacted with NH3. To prepare the silicon nitride-containing ceramic material, the polymeric hydridosilazanes are then pyrolyzed.

公开(公告)号：CA2034954A1

公开(公告)日：1991-07-28

申请号：CA2034954

申请日：1991-01-25

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  KLEINER HANS-JERG ,  BRUCK MARTIN

IPC: C04B35/589 ,  C08G77/22 ,  C08G77/24 ,  C08G77/48 ,  C08G77/60 ,  C08G77/62 ,  C07F7/10 ,  C04B35/58 ,  C04B35/64

Abstract: HOE 90/F 030 Silazane polymers containing SiCl groups, process for their preparation, silicon nitride-containing ceramic materials which can be prepared from them, and their preparation The invention relates to novel silazane polymers containing SiCl groups, to their preparation, to their conversion into silicon nitride-containing ceramic material, and to this material itself. In order to prepare the silazane polymers containing SiCl groups, .alpha.,.omega.-chlorosilazanes of the formula I (I) in which m has a value of from 1 to 12 and -(Si) is a silyl radical of the formula -SiHR1Cl, -SiR2R3Cl, -SiR4Cl2, -SiR5Cl-CH2CH2-SiR5Cl2 or -SiCl2-CH2CH2-SiR6Cl2, and R is C1-C6-alkyl or C2-C6-alkenyl and, independently of one another, R1-R6 are H, C1-C6-alkyl or C2-C6-alkenyl, to a temperature of from 100.degree.C to 400.degree.C. The silazane polymers according to the invention containing in SiCl groups can be reacted with ammonia to give polysilazanes, which can themselves be pyrolyzed to give silicon nitride-containing ceramic materials.

公开(公告)号：CA1326678C

公开(公告)日：1994-02-01

申请号：CA584939

申请日：1988-12-02

Applicant: HOECHST AG

Inventor： VAAHS TILO

IPC: C07F7/12 ,  C07F7/10

Abstract: of the disclosure Si, Si'-Diorganyl-N-alkyl-tetrachloro-disilazanes and a process for their preparation The invention relates to a process for the preparation of Si,Si'-diorganyl-N alkyl-tetrachloro-disilazanes of the formula RSiCl2-NR'-SiCl2R, in which R is C1-C4-alkyl, vinyl or phenyl and R' is C1-C4-alkyl, and to these compounds themselves, with the exception of those where R = R' D CH3. To prepare the compounds mentioned, organyltrichlorosilanes RSiCl3 and monoalkylamines R'NH2 are reacted with one another in an aprotic solvent at -10.degree.C to +70.degree.C, the molar ratio of RSiCl3 : R'NH2 being at least 0.3 : 1.

公开(公告)号：CA2004403A1

公开(公告)日：1990-06-03

申请号：CA2004403

申请日：1989-12-01

Applicant: HOECHST AG

Inventor： PETZOW GUNTER ,  RIEDEL RALF ,  SEHER MARTIN ,  PEUCKERT MARCELLUS ,  BRUCK MARTIN ,  GERDAU THOMAS ,  KLEINER HANS-JERG ,  VAAHS TILO ,  ALDINGER FRITZ

IPC: C01B21/068 ,  C04B35/58 ,  C04B35/589 ,  C04B35/593 ,  C08G77/48 ,  C08G77/62 ,  C04B35/14 ,  C04B35/56

Abstract: HOE 88/F 349 Sinterable ceramic powder, process for its preparation, silicon nitride ceramic manufactured thereform, process for its manufacture and its use The invention relates to a novel sinterable ceramic powder, to its preparation, to its processing to form silicon nitride ceramic and to said material itself and its use. The sinterable ceramic powder is prepared by dissolving the polysilazane of formula (I) ¢CH3SiHNH!n¢CH3SiN!n where n is about 10 to 12, in an organic solvent, suspending a pulverulent sinter aid in this solution and then evaporating the solvent and pyrolyzing the residue in an inert gas atmosphere at 500 to 1600.degree.C. The resulting ceramic powder can be used to form a shaped article and then to manufacture silicon nitride ceramic by sintering. It is also possible, however, to form a shaped article from the as yet unpyrolyzed residue obtained after evaporation of the solvent, and then to pyrolyze and sinter said article. The ceramic obtained can be used to manufacture components subject to high mechanical, thermal and corrosive stress.

公开(公告)号：CA2004400A1

公开(公告)日：1990-06-03

申请号：CA2004400

申请日：1989-12-01

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  PEUCKERT MARCELLUS ,  BRUCK MARTIN

IPC: C04B35/58 ,  C04B35/589 ,  C08G77/48 ,  C08G77/60 ,  C08G77/62 ,  D01F9/10 ,  C01B33/00 ,  C04B35/14

Abstract: HOE 88/F 339 Polymeric ethylene-bridged chlorosilazanes, process for their preparation, ceramic materials which can be prepared from them containing silicon nitride, and their preparation The invention relates to novel polymeric ethylene-bridged chlorosilazanes, their preparation, their further processing to a ceramic material containing silicon nitride, and this material itself. In order to prepare the polymeric chlorosilazanes, oligosilazanes of the formula (I) (I) are reacted with at least one of the chlorosilanes , , R4SiCl3, R5SiHCl2, in which R1 to R5 are C1-C6-alkyl or C2-C6-alkenyl groups, which may be identical or different. The polymeric chlorosilazanes according to the invention can be converted by reaction with ammonia into polysilazanes, which in their turn can be pyrolysed to ceramic materials containing silicon nitride.

公开(公告)号：CA1311872C

公开(公告)日：1992-12-22

申请号：CA586792

申请日：1988-12-22

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  KLEINER HANS-JERG ,  PEUCKERT MARCELLUS ,  BRUECK MARTIN

IPC: C04B35/58 ,  C04B35/589 ,  C08G77/48 ,  C08G77/60 ,  C08G77/62 ,  D01F9/10

Abstract: of the disclosure Polymeric hydridothiosilazanes, processes for the preparation thereof, silicon nitride-containing ceramic materials which can be prepared therefrom, and the preparation thereof. The invention relates to novel polymeric hydridothiosilazanes, the preparation thereof, the conversion thereof into silicon nitride-containing ceramic material, and this material itself. To prepare the polymeric hydridothiosilazanes, oligohydridoalkylsilazanes (RSiHNH)n are reacted with elemental sulfur and ether as solvents. The polymeric hydridothiosilazanes can then be pyrolyzed to form silicon nitride-containing ceramic material.

公开(公告)号：MX9202174A

公开(公告)日：1992-11-01

申请号：MX9202174

申请日：1992-05-11

Applicant: HOECHST AG

Inventor： SCHRELL ANDREAS ,  RUSS WERNER HUBERT ,  RIEHM THOMAS ,  VAAHS TILO

IPC: C07F7/04 ,  D06M13/507 ,  D06M13/513 ,  D06P1/38 ,  D06P1/52 ,  D06P3/14 ,  D06P3/24 ,  D06P3/52 ,  D06P3/60 ,  D06P3/70 ,  D06P3/854 ,  D06P5/22 ,  D06P1/642

Abstract: A process for dyeing textile fibre materials with water-soluble dyes, in particular anionic dyes, and of these in particular those having a fibre-reactive group, in which the dyeing is carried out using low-electrolyte or completely electrolyte-free and/or low-alkali or completely alkali-free dyeing liquors or printing pastes and, as the textile material, a fibre material is used which has been modified with a silane compound containing amino groups. The modification of the fibre material is effected by applying the silane compound containing amino groups to the material in aqueous solution and subjecting the impregnated material to heat treatment. In addition, novel silane compounds are described which contain a secondary amino group and can likewise be employed for the purpose mentioned.

公开(公告)号：CA2034953A1

公开(公告)日：1991-07-28

申请号：CA2034953

申请日：1991-01-25

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  KLEINER HANS-JERG

IPC: C01B21/068 ,  C04B35/589 ,  C07F7/10 ,  C08G77/48 ,  C08G77/62

Abstract: HOE 90/F 031 of the disclosure .alpha.,.omega.-Chlorosilazanes, and a process for their preparation The invention relates to a process for the preparation of .alpha.,.omega.-chlorosilazanes which comprises reacting an oligohydridoorganylsilazane of the formula ¢-RSiH-NH-!n in which n is from about 3 to about 12 with at least one of the chlorosilanes R1HSiCl2, R2R3SiCl2, R4SiCl3, Cl2R5SiCH2CH2SiR5Cl2 and Cl3SiCH2CH2SiR6Cl2 where R is C1-C6-alkyl or C2-C6-alkenyl and, independently of one another, R1-R5 are H, C1-C6-alkyl or C2-C6-alkenyl, at from -20.degree.C to +50.degree.C. In addition, the invention relates to the novel .alpha.,.omega.-chlorosilazanes obtainable by this process.

公开(公告)号：CA2004405A1

公开(公告)日：1990-06-03

申请号：CA2004405

申请日：1989-12-01

Applicant: HOECHST AG

Inventor： VAAHS TILO ,  PEUCKERT MARCELLUS ,  BRUCK MARTIN

IPC: C04B35/58 ,  C04B35/589 ,  C08G77/48 ,  C08G77/62 ,  D01F9/10 ,  C01B33/00 ,  C04B35/14

Abstract: HOE 88/F 341 Polymeric chlorosilazanes, process for their preparation, ceramic materials containing silicon nitride which can be manufactured therefrom, and their manufacture The invention relates to novel polymeric chlorosilazanes, to their preparation, to their processing to form ceramic material containing silicon nitride, and to said material itself. The polymeric chlorosilazanes are prepared by reacting a mixture of oligosilazanes of formula (I) (I) in which n is about 2 to about 12, and oligosilazanes of formula (II), (RSiHNH)m, in which m is about 3 to about 12, with at least one of the chlorosilanes Cl2R2Si-CH2-CH2-SiR2Cl2, Cl3Si-CH2-CH2-SiR3Cl2, R4SiCl3 or R5SiHCl2 at 30.degree.C to 300.degree.C, where R and R1 to R5 are C1-C6 alkyl or C2-C6 alkenyl groups which can be identical or different. The polymeric chlorosilazanes according to the invention can be converted into polysilazanes by reaction with ammonia, and these in turn can be pyrolyzed to form ceramic materials containing silicon nitride.

公开(公告)号：CA2004395A1

公开(公告)日：1990-06-03

申请号：CA2004395

申请日：1989-12-01

Applicant: HOECHST AG

Inventor： VAAHS TILO

IPC: C04B35/589 ,  C07F7/10 ,  C07F9/70 ,  C08G77/62 ,  D01F9/10

Abstract: Oligomeric silazanes and process for their preparation The invention relates to novel oligomeric silazanes and to a process for their preparation. The process comprises reacting excess ammonia with a mixture of R1R2SiCl2 and Cl2R3Si-CH2CH2-SiR3Cl2 at -70 to +100.degree.C, where the radicals independently of one another have the following meanings: R1, R2 = H, C1-C5 alkyl or C2-C6 alkenyl and R3 = C1-C6 alkyl or C2-C6 alkenyl. The oligomeric silazanes can easily be converted into polymeric chlorosilazanes, which in turn can be converted with high yield into ceramic materials containing silicon nitride.