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公开(公告)号：JPH07238198A
公开(公告)日：1995-09-12
申请号：JP29760494
申请日：1994-11-30
Applicant: HOECHST AG
Inventor： BLAEDEL HERMANN , FELIX BERND , HINTZER KLAUS , LOEHR GERNOT , MITTERBERGER WOLF DIETER
IPC: C08L27/12 , C03C25/30 , C03C25/305 , C08F2/16 , C08F214/26 , C08J3/00 , C08J3/03 , C08L27/18 , C09D127/12 , C09D127/18 , D06M15/256 , D06N3/04
Abstract: Aqueous dispersions of fluoropolymers which are obtained by emulsion polymerisation, cannot be processed from the melt, and form films on sintering, comprising a fluoropolymer A) having an average particle size (number average) of from 180 to 400 nm and a fluoropolymer B) having an average particle size which is lower by a factor of from about 0.3 to about 0.7, so that the total dispersion has a nonmonomodal numerical distribution of the particle diameter, are suitable for soaking, impregnating or coating surfaces, for example of fibres or planiform articles of fibres or porous materials, in particular for coating fibreglass fabrics, and also for the formulation of metal coating systems.
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公开(公告)号：NL1001483C2
公开(公告)日：1997-03-20
申请号：NL1001483
申请日：1995-10-23
Applicant: HOECHST AG
Inventor： STRASSER HERBERT , FELIX BERND , REIFF ULRICH , RICHTER HANS-BODO , ZIPPLIES TILMAN
Abstract: An apparatus suitable in particular for degassing fluoropolymers which have been subjected to thermal degradation contains-in the direction of flow of the product-a product intake, a coolable conveyor section, a comminution apparatus, a heated conveyor section and a product discharge, the entire apparatus being designed to be gastight and advantageously being designed to be resistant to pressure surges and having a gas outlet in the area of the coolable conveyor section and/or in the area of the comminution apparatuses.
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公开(公告)号：NO843170L
公开(公告)日：1985-02-11
申请号：NO843170
申请日：1984-08-08
Applicant: HOECHST AG
Inventor： FELIX BERND , FROEHLICH WALTER , KATZENBERGER HEINER
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公开(公告)号：NO843170A
公开(公告)日：1985-02-11
申请号：NO843170
申请日：1984-08-08
Applicant: HOECHST AG
Inventor： FELIX BERND , FROEHLICH WALTER , KATZENBERGER HEINER
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公开(公告)号：IT1276985B1
公开(公告)日：1997-11-03
申请号：ITMI952186
申请日：1995-10-23
Applicant: HOECHST AG
Inventor： STRASSER HERBERT , FELIX BERND , REIFF ULRICH , RICTHER HANS-BODO , ZIPPLIES TILMAN
Abstract: An apparatus suitable in particular for degassing fluoropolymers which have been subjected to thermal degradation contains-in the direction of flow of the product-a product intake, a coolable conveyor section, a comminution apparatus, a heated conveyor section and a product discharge, the entire apparatus being designed to be gastight and advantageously being designed to be resistant to pressure surges and having a gas outlet in the area of the coolable conveyor section and/or in the area of the comminution apparatuses.
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Patent Agency Ranking
公开(公告)号：NL1001483A1
公开(公告)日：1996-04-25
申请号：NL1001483
申请日：1995-10-23
Applicant: HOECHST AG
Inventor： STRASSER HERBERT , FELIX BERND , REIFF ULRICH , RICHTER HANS-BODO , ZIPPLIES TILMAN
Abstract: An apparatus suitable in particular for degassing fluoropolymers which have been subjected to thermal degradation contains-in the direction of flow of the product-a product intake, a coolable conveyor section, a comminution apparatus, a heated conveyor section and a product discharge, the entire apparatus being designed to be gastight and advantageously being designed to be resistant to pressure surges and having a gas outlet in the area of the coolable conveyor section and/or in the area of the comminution apparatuses.
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公开(公告)号：PL306051A1
公开(公告)日：1995-06-12
申请号：PL30605194
申请日：1994-11-30
Applicant: HOECHST AG
Inventor： BLAEDEL HERMANN , FELIX BERND , HINTZER KLAUS , LOEHR GERNOT , MITTERBERGER WOLF DIETER
IPC: C08L27/12 , C03C25/30 , C03C25/305 , C08F2/16 , C08F214/26 , C08J3/00 , C08J3/03 , C08L27/18 , C09D127/12 , C09D127/18 , D06M15/256 , D06N3/04 , C08F14/18
Abstract: Aqueous dispersions of fluoropolymers which are obtained by emulsion polymerisation, cannot be processed from the melt, and form films on sintering, comprising a fluoropolymer A) having an average particle size (number average) of from 180 to 400 nm and a fluoropolymer B) having an average particle size which is lower by a factor of from about 0.3 to about 0.7, so that the total dispersion has a nonmonomodal numerical distribution of the particle diameter, are suitable for soaking, impregnating or coating surfaces, for example of fibres or planiform articles of fibres or porous materials, in particular for coating fibreglass fabrics, and also for the formulation of metal coating systems.
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公开(公告)号：HU195632B
公开(公告)日：1988-06-28
申请号：HU295784
申请日：1984-08-03
Applicant: HOECHST AG
Inventor： FELIX BERND , FROEHLICH WALTER , KATZENBERGER HEINER
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公开(公告)号：ITMI952186A1
公开(公告)日：1997-04-23
申请号：ITMI952186
申请日：1995-10-23
Applicant: HOECHST AG
Inventor： STRASSER HERBERT , FELIX BERND , REIFF ULRICH , RICTHER HANS-BODO , ZIPPLIES TILMAN
Abstract: An apparatus suitable in particular for degassing fluoropolymers which have been subjected to thermal degradation contains-in the direction of flow of the product-a product intake, a coolable conveyor section, a comminution apparatus, a heated conveyor section and a product discharge, the entire apparatus being designed to be gastight and advantageously being designed to be resistant to pressure surges and having a gas outlet in the area of the coolable conveyor section and/or in the area of the comminution apparatuses.
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公开(公告)号：PL167081B1
公开(公告)日：1995-07-31
申请号：PL29104191
申请日：1991-07-12
Applicant: HOECHST AG
Inventor： FELIX BERND , LOEHR GERNOT , HOFMEISTER WILLIBALD , HENGEL ROLF
Abstract: In the suspension polymerization of tetrafluoroethylene a mixture of tetrafluoroethylene and an inert gas is charged under pressure before starting the polymerization, the total pressure being 5 to 50 bar and the concentration of tetrafluoroethylene in this mixture being 30 to 70 mol %. Said concentration is kept within this range by an appropriate feed of tetrafluoroethylene during the polymerization. The granular PTFE powder obtained is distinguished by an improved grain structure and grindability.
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