Patents by Inventor Lothar Reif
Lothar Reif 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).
-
Patent number: 9475060Abstract: A method and apparatus for disintegrating an elastomer is provided. The elastomer is moved across a base relative to a cutting tool and toward the cutting tool. The cutting tool has a cutting wedge, which has a cutting edge and a rake face adjacent to the cutting edge. After the cutting wedge comes into contact with the elastomer, the elastomer is first at least partially compressed only by the rake face between the rake face and the base before the cutting edge cuts through the elastomer. An elastic evasive movement of the elastomer is avoided because of the initial planar compression of the elastomer by the rake face. Thus, it is possible to cut off significantly thinner pieces from the elastomer.Type: GrantFiled: May 29, 2012Date of Patent: October 25, 2016Assignee: LANXESS DEUTSCHLAND GMBHInventors: Lothar Reif, Thomas Neuner, Christian Mähner-Wolfarth, Werner Obrecht
-
Publication number: 20140197255Abstract: The invention relates to a method for disintegrating an elastomer (20), wherein the elastomer (20) is moved across a floor (22) relative to a cutting tool (12) and toward the cutting tool (12), wherein the cutting tool (12) has a cutting wedge (14), which has a cutting edge (30) and a rake face (32) adjacent to the cutting edge (30). After the cutting wedge (14) comes in contact with the elastomer (20), the elastomer (20) is first at least partially compressed only by the rake face (32) between the rake face (32) and the floor (22) before the cutting edge (30) cuts through the elastomer (20). Because of the initially planar compression of the elastomer (20) by means of the rake face (32), an elastic evasive movement of the elastomer (20) is avoided, such that it is possible to cut off significantly thinner pieces from the elastomer (20), and thus the specific surface area of the pieces severed from the elastomer (20) can be increased.Type: ApplicationFiled: May 29, 2012Publication date: July 17, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Lothar Reif, Thomas Neuner, Christian Mähner-Wolfarth, Werner Obrecht
-
Patent number: 8304491Abstract: The novel process provides latices of homo- and copolymers of chloroprene and of one or more further copolymerizable monomers at a higher reaction rate and hence in an improved space-time yield. The latices obtained have a high gel content, distinctly lower levels of by-products, in particular of chloroprene dimer, than prior art products, and are useful, if appropriate in concentrated form, for a wide variety of applications.Type: GrantFiled: September 28, 2011Date of Patent: November 6, 2012Inventors: Lothar Reif, Christian Lente
-
Publication number: 20120022213Abstract: The novel process provides latices of homo- and copolymers of chloroprene and of one or more further copolymerizable monomers at a higher reaction rate and hence in an improved space-time yield. The latices obtained have a high gel content, distinctly lower levels of by-products, in particular of chloroprene dimer, than prior art products, and are useful, if appropriate in concentrated form, for a wide variety of applications.Type: ApplicationFiled: September 28, 2011Publication date: January 26, 2012Applicant: LANXESS DEUTSCHLAND GMBHInventors: Lothar Reif, Christian Lente
-
Patent number: 8063136Abstract: The novel process provides latices of homo- and copolymers of chloroprene and of one or more further copolymerizable monomers at a higher reaction rate and hence in an improved space-time yield. The latices obtained have a high gel content, distinctly lower levels of by-products, in particular of chloroprene dimer, than prior art products, and are useful, if appropriate in concentrated form, for a wide variety of applications.Type: GrantFiled: August 29, 2007Date of Patent: November 22, 2011Assignee: LANXESS Deutschland GmbHInventors: Lothar Reif, Christian Lente
-
Patent number: 7977431Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: GrantFiled: September 23, 2010Date of Patent: July 12, 2011Assignee: LANXESS Deutschland GmbHInventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
-
Patent number: 7932346Abstract: A novel process is used to prepare synthetic rubbers (B) which feature very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a synthetic rubber with ultrasound, where the resultant synthetic rubber (B) has a lower weight-average molecular weight (Mw) than the synthetic rubber (A) used. The resultant synthetic rubbers (B) have excellent suitability for processing via extruder processes or injection-molding processes.Type: GrantFiled: June 7, 2010Date of Patent: April 26, 2011Assignee: LANXESS Deutschland GmbHInventors: Lothar Reif, Stephen Pask
-
Publication number: 20110015360Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: ApplicationFiled: September 23, 2010Publication date: January 20, 2011Applicant: LANXESS DEUTSCHLAND GMBHInventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
-
Patent number: 7825193Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: GrantFiled: December 1, 2006Date of Patent: November 2, 2010Assignee: LANXESS Deutschland GmbHInventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Ste{acute over (f)}an Glander
-
Publication number: 20100249351Abstract: A novel process is used to prepare synthetic rubbers (B) which feature very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a synthetic rubber with ultrasound, where the resultant synthetic rubber (B) has a lower weight-average molecular weight (Mw) than the synthetic rubber (A) used. The resultant synthetic rubbers (B) have excellent suitability for processing via extruder processes or injection-moulding processes.Type: ApplicationFiled: June 7, 2010Publication date: September 30, 2010Applicant: LANXESS DEUTSCHLAND GMBHInventors: Lothar Reif, Stephen Pask
-
Publication number: 20100216961Abstract: A novel process produces a novel hydrogenated nitrile rubber (B) which features a very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a hydrogenated nitrile rubber (A) with ultrasound, whereupon the resultant hydrogenated nitrile rubber (B) has a lower weight-average molecular weight (Mw) than the hydrogenated nitrile rubber (A). The resultant hydrogenated nitrile rubber (B) has excellent suitability for the production of moldings via processing by extrusion processes or by injection-moulding processes.Type: ApplicationFiled: May 4, 2010Publication date: August 26, 2010Applicant: LANXESS DEUTSCHLAND GMBHInventors: Lothar Reif, Stephen Pask
-
Patent number: 7763703Abstract: A novel process is used to prepare synthetic rubbers (B) which feature very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a synthetic rubber with ultrasound, where the resultant synthetic rubber (B) has a lower weight-average molecular weight (Mw) than the synthetic rubber (A) used. The resultant synthetic rubbers (B) have excellent suitability for processing via extruder processes or injection-moulding processes.Type: GrantFiled: December 11, 2006Date of Patent: July 27, 2010Assignee: LANXESS Deutschland GmbHInventors: Lothar Reif, Stephen Pask
-
Patent number: 7737193Abstract: A novel process produces a novel hydrogenated nitrile rubber (B) which features a very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a hydrogenated nitrile rubber (A) with ultrasound, whereupon the resultant hydrogenated nitrile rubber (B) has a lower weight-average molecular weight (Mw) than the hydrogenated nitrile rubber (A). The resultant hydrogenated nitrile rubber (B) has excellent suitability for the production of mouldings via processing by extrusion processes or by injection-moulding processes.Type: GrantFiled: December 11, 2006Date of Patent: June 15, 2010Assignee: LANXESS Deutschland GmbHInventors: Lothar Reif, Stephen Pask
-
Publication number: 20080076855Abstract: The novel process provides latices of homo- and copolymers of chloroprene and of one or more further copolymerizable monomers at a higher reaction rate and hence in an improved space-time yield. The latices obtained have a high gel content, distinctly lower levels of by-products, in particular of chloroprene dimer, than prior art products, and are useful, if appropriate in concentrated form, for a wide variety of applications.Type: ApplicationFiled: August 29, 2007Publication date: March 27, 2008Inventors: Lothar Reif, Christian Lente
-
Publication number: 20070142564Abstract: A novel process produces a novel hydrogenated nitrile rubber (B) which features a very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a hydrogenated nitrile rubber (A) with ultrasound, whereupon the resultant hydrogenated nitrile rubber (B) has a lower weight-average molecular weight (Mw) than the hydrogenated nitrile rubber (A). The resultant hydrogenated nitrile rubber (B) has excellent suitability for the production of mouldings via processing by extrusion processes or by injection-moulding processes.Type: ApplicationFiled: December 11, 2006Publication date: June 21, 2007Inventors: Lothar Reif, Stephen Pask
-
Publication number: 20070142621Abstract: A novel process is used to prepare synthetic rubbers (B) which feature very narrow molecular weight distribution and a correspondingly low value for the polydispersity index. The preparation process encompasses the treatment of a synthetic rubber with ultrasound, where the resultant synthetic rubber (B) has a lower weight-average molecular weight (Mw) than the synthetic rubber (A) used. The resultant synthetic rubbers (B) have excellent suitability for processing via extruder processes or injection-moulding processes.Type: ApplicationFiled: December 11, 2006Publication date: June 21, 2007Inventors: Lothar Reif, Stephen Pask
-
Publication number: 20070078229Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: ApplicationFiled: December 1, 2006Publication date: April 5, 2007Inventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
-
Patent number: 7169937Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: GrantFiled: September 15, 2003Date of Patent: January 30, 2007Assignee: Bayer AktiengesellschaftInventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
-
Publication number: 20040110964Abstract: The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.Type: ApplicationFiled: September 15, 2003Publication date: June 10, 2004Inventors: Dirk Achten, Michael Klimpel, Emilie Barriau, Lothar Reif, Renke Mottweiler, Heinrich Berg, Zsolt Szentivanyi, Stefan Glander
-
Publication number: 20020149002Abstract: The invention relates to anionically stabilized aqueous dispersions of nanoparticle zinc oxide having a mean primary particle diameter of ≦30 nm and a mean agglomerate size of ≦100 nm, wherein the surface of the zinc oxide particles at pH values of ≧7 has a negative charge and the content of nanoparticle zinc oxide in the dispersion is 0.01 to 30 wt. %, a process for their production, as well as their use as vulcanization activators for the vulcanization of latex molded articles.Type: ApplicationFiled: April 4, 2002Publication date: October 17, 2002Inventors: Hermann Jens Womelsdorf, Gerd Passing, Volker Wege, Joachim Wagner, Bernd Hynek, Lothar Reif