Patents by Inventor Norbert Weferling
Norbert Weferling has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20140076866Abstract: The invention relates to a method for joining a first component (3) to a second component (5) by means of energy beam welding, wherein at least one of the components (3, 5) has a coating that regionally evaporates during the energy beam welding. In order to allow improved joining of the components (3, 5), the method is carried out by positioning the first component (3) and the second component (5) between a first pressure piece (7) and a second pressure piece (9), moving the pressure pieces (7, 9) towards one another and in the process analysing a profile (31) that characterizes a force (33) that occurs between the pressure pieces (7, 9), setting a relative position of the pressure pieces (7, 9) with respect to one another depending on the analysis, joining the components (3, 5) by means of the energy beam welding with the pressure pieces (7, 9) in the set relative position. The invention also relates to a device (1) according to the method for joining the components (3, 5).Type: ApplicationFiled: May 14, 2012Publication date: March 20, 2014Inventors: Mario Gramsch, Norbert Weferling
-
Patent number: 7635785Abstract: The invention relates to a process for preparation of salts of dialkylphosphinic acids, which comprises a) reacting hypophosphorous acid and/or its salts with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or their alkali metal salts, in a solvent system, and b) reacting the dialkylphosphinic acids and/or alkali metal dialkylphosphinates obtained in a) with compounds of the metals Mg, Ca, Al, Zn, Ti, Sn, Zr, and/or Fe to give the dialkylphosphinic salts of these metals. The invention also relates to the use of the metal dialkylphosphinic salts obtained by the inventive process, in particular for preparation of flame retardants.Type: GrantFiled: December 17, 2004Date of Patent: December 22, 2009Assignee: Clariant Deutschland GmbHInventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Patent number: 7446140Abstract: The invention relates to diorganylphosphinic salts of the formula (I) and/or diorganyldiphosphinic salts of the formula (II) and/or any of their polymers where R1 and R2 are identical or different and are C1-C6-alkyl, linear or branched, and/or aryl; R3 is C1-C10-alkylene, linear or branched, C6-C10-arylene, -alkylarylene, or -arylalkylene; M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, and/or a protonated nitrogen base; m is from 1 to 4; n is from 1 to 4; x is from 1 to 4, wherein the total content of partially water-soluble, ionizable compounds and the water-soluble content of the partially water-soluble, ionizable compounds is from 8200 to 100 ppm, preferably from 7000 to 200 ppm.Type: GrantFiled: May 11, 2005Date of Patent: November 4, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Patent number: 7420007Abstract: The invention relates to dialkylphosphinic salts of the formula (I) where R1, R2 identical or different, are C1-C6-alkyl, linear or branched M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K and/or is a protonated nitrogen base; m is from 1 to 4; wherein the telomer content is from 0.01 to 6% by weight. The invention also relates to glare use in flame retardant compositions, and to flame-retardant polymer molding compositions and flame-retardant polymer moldings which comprise these dialkylphosphinic salts.Type: GrantFiled: December 17, 2004Date of Patent: September 2, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Patent number: 7348396Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) where X is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base, R1 and R2 are identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, R3 and R4 may be identical or different and are an unsubstituted or substituted alkyl group having from 2 to 20 carbon atoms, or are OX, with the above meaning for X, and ? is the average number of monomer units. The invention further relates to a process for preparing the abovementioned compounds, and to their use.Type: GrantFiled: September 29, 2006Date of Patent: March 25, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Martin Sicken, Werner Krause, Norbert Weferling, Hans-Peter Schmitz
-
Publication number: 20070027297Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) where X is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base, R1 and R2 are identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, R3 and R4 may be identical or different and are an unsubstituted or substituted alkyl group having from 2 to 20 carbon atoms, or are OX, with the above meaning for X, and u is the average number of monomer units. The invention further relates to a process for preparing the abovementioned compounds, and to their use.Type: ApplicationFiled: September 29, 2006Publication date: February 1, 2007Inventors: Martin Sicken, Werner Krause, Norbert Weferling, Hans-Peter Schmitz
-
Publication number: 20060287418Abstract: The invention relates to a nanoparticulate phosphorus-containing flame retardant system, which comprises a phosphinic salt of the formula (I) and/or a diphosphinic salt of the formula (II) and/or their polymers, where R1 and R2 are identical or different and are C1-C6-alkyl, linear or branched, and/or aryl; R3 is C1-C10-alkylene, linear or branched, C6-C10-arylene, -alkylarylene, or -arylalkylene; M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, and/or a protonated nitrogen base; m is from 1 to 4; n is from 1 to 4; x is from 1 to 4; and to a process for the preparation of these flame retardant systems, and to their use.Type: ApplicationFiled: July 15, 2005Publication date: December 21, 2006Inventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Patent number: 7129320Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) where X is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base, R1 and R2 are identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, R3 and R4 may be identical or different and are an unsubstituted or substituted alkyl group having from 2 to 20 carbon atoms, or are OX, with the above meaning for X, and ? is the average number of monomer units. The invention further relates to a process for preparing the above-mentioned compounds, and to their use.Type: GrantFiled: March 4, 2004Date of Patent: October 31, 2006Assignee: Clariant GmbHInventors: Martin Sicken, Werner Krause, Norbert Weferling, Hans-Peter Schmitz
-
Publication number: 20060084734Abstract: The invention relates to diorganylphosphinic salts of the formula (I) and/or diorganyidiphosphinic salts of the formula (II) and/or any of their polymers where R1 and R2 are identical or different and are C1-C6-alkyl, linear or branched, and/or aryl; R3 is C1-C10-alkylene, linear or branched, C6-C10-arylene, -alkylarylene, or -arylalkylene; M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, and/or a protonated nitrogen base; m is from 1 to 4; n is from 1 to 4; x is from 1 to 4, wherein the total content of partially water-soluble, ionizable compounds and the water-soluble content of the partially water-soluble, ionizable compounds is from 8200 to 100 ppm, preferably from 7000 to 200 ppm.Type: ApplicationFiled: May 11, 2005Publication date: April 20, 2006Inventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Publication number: 20060074157Abstract: The invention relates to dialkylphosphinic salts of the formula (I) where R1, R2 identical or different, are C1-C6-alkyl, linear or branched M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K and/or is a protonated nitrogen base; m is from 1 to 4; wherein the telomer content is from 0.01 to 6% by weight. The invention also relates to glare use in flame retardant compositions, and to flame-retardant polymer molding compositions and flame-retardant polymer moldings which comprise these dialkylphosphinic salts.Type: ApplicationFiled: December 17, 2004Publication date: April 6, 2006Inventors: Harald Bauer, Wener Krause, Martin Sicken, Norbert Weferling
-
Publication number: 20050137418Abstract: The invention relates to a process for preparation of salts of dialkylphosphinic acids, which comprises a) reacting hypophosphorous acid and/or its salts with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or their alkali metal salts, in a solvent system, and b) reacting the dialkylphosphinic acids and/or alkali metal dialkylphosphinates obtained in a) with compounds of the metals Mg, Ca, Al, Zn, Ti, Sn, Zr, and/or Fe to give the dialkylphosphinic salts of these metals. The invention also relates to the use of the metal dialkylphosphinic salts obtained by the inventive process, in particular for preparation of flame retardants.Type: ApplicationFiled: December 17, 2004Publication date: June 23, 2005Inventors: Harald Bauer, Werner Krause, Martin Sicken, Norbert Weferling
-
Patent number: 6815558Abstract: The invention relates to a process for the preparation of (metal) salts of alkylphosphonous acids, which comprises reacting elemental yellow phosphorus with alkyl halides in the presence of carbonates, bicarbonates, amides, alkoxides, amine bases and/or solid hydroxides as bases. The invention also relates to the use of the (metal) salts of alkylphosphonous acids prepared by this process.Type: GrantFiled: May 25, 2000Date of Patent: November 9, 2004Assignee: Clariant GmbHInventor: Norbert Weferling
-
Patent number: 6806383Abstract: The invention relates to a process for the preparation of (metal) salts of alkylphosphonous acids, which comprises reacting elemental yellow phosphorus with halogen-free alkylating agents in the presence of at least one base. The invention also relates to the use of the (metal) salts of alkylphosphonous acids prepared by this process.Type: GrantFiled: May 25, 2000Date of Patent: October 19, 2004Assignee: Clariant GmbHInventors: Norbert Weferling, Martin Sicken
-
Publication number: 20040176580Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) 1Type: ApplicationFiled: March 4, 2004Publication date: September 9, 2004Applicant: Clariant GmbHInventors: Martin Sicken, Werner Krause, Norbert Weferling, Hans-Peter Schmitz
-
Patent number: 6770779Abstract: The present invention relates to a process for the preparation of alkylphosphonous acid esters which comprises a) reacting elemental yellow phosphorus with alkylating agents in the presence of a base to give a mixture which comprises, as principal constituents, the (metal) salts of alkylphosphonous, phosphorous and hypophosphorous acids, b) esterifying the principal constituents of the mixture from a) to give an ester mixture, c) isolating the ester of the alkylphosphonous acid from the ester mixture. The invention likewise relates to the use of the alkylphosphonous acid esters prepared by this process as precursors for further syntheses, inter alia for the preparation of crop protection agents.Type: GrantFiled: May 24, 2000Date of Patent: August 3, 2004Assignee: Clariant GmbHInventors: Norbert Weferling, Martin Sicken, Hans-Peter Schmitz, Günter Kolbe
-
Patent number: 6727335Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) in which X is hydrogen or a 1/m metal of valency m, R1 and R2 are identical or different and are hydrogen, a carboxyl group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having 1 to 10 carbon atoms, phenyl, benzyl or alkyl-substituted aromatics, R3 and R4 are identical or different and are hydrogen or a vinyl group of the formula (VI) —CR1═CHR2 (VI) in which R1 and R2 have the abovementioned meaning, and {overscore (u)} is the average number of monomer units. The invention also relates to a process for the preparation of the abovementioned compounds and their use.Type: GrantFiled: April 17, 2003Date of Patent: April 27, 2004Assignee: Clariant GmbHInventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz
-
Publication number: 20030216533Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) 1Type: ApplicationFiled: April 17, 2003Publication date: November 20, 2003Applicant: Clariant GmbHInventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz
-
Patent number: 6583315Abstract: The invention relates to a process for preparing ethanebis(alkylphosphinic) acids by a) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or of alkaline earth metal hydroxide to give a mixture whose main constituents are the alkali metal salts and/or alkaline earth metal salts of alkylphosphonous, phosphorous, and hypophosphorous acid, b) liberating alkylphosphonous, phosphorous, and hypophosphorous acid by adding mineral acids, and also at the same time precipitating the alkali metal ions and, respectively, alkaline earth metal ions in the form of their salt of the mineral acids, and then c) esterifying the alkylphosphonous acid from the mixture of the alkylphosphonous, phosphorous, and hypophosphorous acid, d) isolating the ester of alkylphosphonous acid from the mixture and hydrolyzing the same to give alkylphosphonous acid, and e) preparing, from the alkylphosphonous acid, the corresponding ethanebis(alkylphosphinic) acid of the general formula (I) wherType: GrantFiled: December 19, 2001Date of Patent: June 24, 2003Assignee: Clariant GmbHInventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz
-
Patent number: 6569974Abstract: The invention relates to polymeric phosphinic acids and their salts of the formula (I) in which X is hydrogen or a 1/m metal of valency m, R1 and R2 are identical or different and are hydrogen, a carboxyl group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having 1 to 10 carbon atoms, phenyl, benzyl or alkyl-substituted aromatics, R3 and R4 are identical or different and are hydrogen or a vinyl group of the formula (VI) in which R1 and R2 have the abovementioned meaning, and {overscore (u)} is the average number of monomer units. The invention also relates to a process for the preparation of the abovementioned compounds and their use.Type: GrantFiled: March 22, 2000Date of Patent: May 27, 2003Assignee: Clariant GmbHInventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz
-
Publication number: 20030073865Abstract: The invention relates to a process for preparing ethanebis(alkylphosphinic) acids byType: ApplicationFiled: December 19, 2001Publication date: April 17, 2003Applicant: Clariant GmbHInventors: Martin Sicken, Norbert Weferling, Hans-Peter Schmitz