Patents by Inventor Helmut Lammerting
Helmut Lammerting 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).
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Patent number: 8748514Abstract: The invention relates to aqueous dispersions containing agents having release activity, emulsifiers and customary auxiliaries and additives, wherein a combination of A) at least one agent having a release activity, selected from the group consisting of soaps, oils, waxes and silicones, and B) polyesters is used as agents having release activity.Type: GrantFiled: October 25, 2006Date of Patent: June 10, 2014Assignee: Evonik Degussa GmbHInventors: Ralf Althoff, Torsten Henning, Helmut Lammerting
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Patent number: 8377359Abstract: A process for the production of compact cellulose-containing moldings by reacting optionally modified organic polyisocyanates with cellulose, in particular lignocellulose, in the presence of mold release agents in an open or closed mold, wherein the mold release agents used are siloxane compounds containing aminopropyl groups and of the general formula (I) in which R1 is CH3 and/or R2, R2 is —(CH2)x—NH—R3 and/or —(O)y—(CH2)x—NH—R3?, R3 and R3?, independently of one another, may be H or —(CH2)x—NH2, R4 is —(CH2)x—NH—(CH2—CH2—O)z—R5 where R5 is an aryl or alkyl radical n is from 50 to 1000, m is from 0 to 20, with the ratio m:n=0 to 0.4, k is from 0 to 20, x is from 1 to 20, y is 0 or 1, z is from 1 to 20, with the proviso that at least one amino-functionalized radical is present.Type: GrantFiled: April 25, 2006Date of Patent: February 19, 2013Assignee: Evonik Goldschmidt GmbHInventors: Tammo Boinowitz, Torsten Henning, Helmut Lammerting
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Patent number: 7811502Abstract: The invention relates to aqueous dispersions containing agents having release activity, emulsifiers and customary auxiliaries and additives, wherein a combination of A) at least one agent having a release activity, selected from the group consisting of soaps, oils, waxes and silicones, and B) polyisobutylene is used as agents having release activity.Type: GrantFiled: October 26, 2006Date of Patent: October 12, 2010Assignee: Evonik Goldschmidt GmbHInventors: Ralf Althoff, Torsten Henning, Helmut Lammerting
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Publication number: 20070110840Abstract: The invention relates to aqueous dispersions containing agents having release activity, emulsifiers and customary auxiliaries and additives, wherein a combination of A) at least one agent having a release activity, selected from the group consisting of soaps, oils, waxes and silicones, and B) polyisobutylene is used as agents having release activity.Type: ApplicationFiled: October 26, 2006Publication date: May 17, 2007Applicant: Goldschmidt GmbHInventors: Ralf Althoff, Torsten Henning, Helmut Lammerting
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Publication number: 20070112083Abstract: The invention relates to aqueous dispersions containing agents having release activity, emulsifiers and customary auxiliaries and additives, wherein a combination of A) at least one agent having a release activity, selected from the group consisting of soaps, oils, waxes and silicones, and B) polyesters is used as agents having release activity.Type: ApplicationFiled: October 25, 2006Publication date: May 17, 2007Applicant: Goldschmidt GmbHInventors: Ralf Althoff, Torsten Henning, Helmut Lammerting
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Publication number: 20060249882Abstract: A process for the production of compact cellulose-containing moldings by reacting optionally modified organic polyisocyanates with cellulose, in particular lignocellulose, in the presence of mold release agents in an open or closed mold, wherein the mold release agents used are siloxane compounds containing aminopropyl groups and of the general formula (I) in which R1 is CH3 and/or R2, R2 is —(CH2)x—NH—R3 and/or —(O)y—(CH2)x—NH—R3?, R3 and R3?, independently of one another, may be H or —(CH2)x—NH2, R4 is —(CH2)x—NH—(CH2—CH2—O)z—R5 where R5 is an aryl or alkyl radical n is from 50 to 1000, m is from 0 to 20, with the ratio m:n=0 to 0.4, k is from 0 to 20, x is from 1 to 20, y is 0 or 1, z is from 1 to 20, with the proviso that at least one amino-functionalized radical is present.Type: ApplicationFiled: April 25, 2006Publication date: November 9, 2006Inventors: Tammo Boinowitz, Torsten Henning, Helmut Lammerting
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Patent number: 7125585Abstract: The invention relates to siloxane compounds of the general formula (I) where R is an unbranched or branched hydrocarbon radical having from 16 to 50 carbon atoms; a is a value from 0.8 to 1.5; b is a value from a to 3, and to their use as homogenizer in release agents with matting effect.Type: GrantFiled: September 24, 2003Date of Patent: October 24, 2006Assignee: Goldschmidt GmbHInventors: Horst Dudzik, Wilfried Knott, Helmut Lammerting
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Publication number: 20040062734Abstract: The invention relates to siloxane compounds of the general formula (I) 1Type: ApplicationFiled: September 24, 2003Publication date: April 1, 2004Inventors: Horst Dudzik, Wilfried Knott, Helmut Lammerting
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Publication number: 20030199398Abstract: The invention provides for, inter alia, the use of solvent-, water- and emulsifier-free preparations for the friction-reducing coating of rubber profiles, comprisingType: ApplicationFiled: April 15, 2003Publication date: October 23, 2003Inventors: Fred Dorrbecker, Helmut Lammerting, Jurgen Schommer
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Patent number: 5993529Abstract: The invention relates to a release agent and lubricant for rubber moldings, especially radiator hoses, which comprises a polyether which is liquid at room temperature, has a viscosity from 400 to 2000 mPas and is obtained by addition reaction of ethylene oxide with oligo- and polyglycerols, individually or in a mixture as initial alcohols, in which reaction from 3 to 15 mol of ethylene oxide are added on per hydroxyl group.Type: GrantFiled: August 18, 1998Date of Patent: November 30, 1999Assignee: Th. Goldschmidt AGInventors: Tammo Boinowitz, Helmut Lammerting
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Patent number: 5145914Abstract: Polyacrylate esters with ammonium salt groups obtained by the transesterification of alkyl polyacrylates produced by free radical polymerization are disclosed, wherein the alkyl groups of the acrylate esters have 1 to 8 carbon atoms, up to 50% of the acrylate esters can be replaced by the corresponding methacrylate esters and the transesterification is carried out witha) compounds of the formula ##STR1## b) saturated or unsaturated aliphatic alcohols having 8 to 22 carbon atoms or alkoxylated alkylphenols having 9 to 27 carbon atoms in the alkylphenol group,wherein the molar ratio of component a) to component b) is 1:9 to 9:1, in such amount that 5 to 70% of the ester groups are transesterified and subsequently, the transesterification product is transformed into a salt.Type: GrantFiled: March 7, 1991Date of Patent: September 8, 1992Assignee: TH. Goldschmidt AGInventors: Eberhard Esselborn, Jurgen Fock, Helmut Lammerting
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Patent number: 5079270Abstract: A method and composition are disclosed for the preparation of polyurethane and polyurea molded articles, particularly according to the RIM method, in which liquid polybutadiene with an average molecular weight of 1,500 to 6,000 is used as an internal release agent in an amount of 0.5 to 5% by weight, based on the reaction formulation. The release agent is highly effective and demolded products which contain this release agent can be painted over without formation of surface defects.Type: GrantFiled: October 23, 1989Date of Patent: January 7, 1992Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Hans-Joachim Kollmeier, Helmut Lammerting
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Patent number: 5064870Abstract: In a method for the preparation of highly elastic, cold curing polyurethane foams, equilibrated organofunctional polysiloxanes of the average general formula ##STR1## wherein R.sup.1 is methyl or R.sup.2,R.sup.2 is chloropropyl,n has a value of 0 to 12,m has a value of 1 to 8 when R.sup.1 is methyl and a value of 0 to 6 when R.sup.1 is chloropropyl,are added in amounts of 0.01 to 2.0% by weight, based on the polyols, to the reaction batch.The stabilizing properties of the organofunctional polysiloxanes are superior to those of the known products. The foams, produced pursuant to the invention, have a coarser cell structure and a higher elasticity. The foams are more open-celled as measured by the impression force.Type: GrantFiled: October 10, 1990Date of Patent: November 12, 1991Assignee: Th. Goldschmidt AGInventors: Hans-Joachim Kollmeier, Georg Burkhart, Rolf-Dieter Langenhagen, Helmut Lammerting, Bernd-Jurgen Klietsch
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Patent number: 5043409Abstract: In a process for the preparation of molded polyurethane or polyurea articles, especially by the RIM process, internal release agents of the general formula ##STR1## are used. In this formula R.sup.1 =is alkyl with 20 to 40 carbon atoms,R.sup.2 =is R.sup.1 or methyl,R.sup.3 =is --(CH.sub.2).sub.s -- or --[(CH.sub.2).sub.t --].sub.r (OC.sub.2 H.sub.4).sub.x --(OC.sub.3 H.sub.6).sub.y --whereins=3 to 12,t=3 to 12,r=0 or 1,x=0 to 10,y=0 to 10,and the sum of x+y is not less than 1,n=0 to 50,m=2 to 100, m being greater than n,p=0 to 5,with the proviso that the siloxane has a melting point of not less than 38.degree. C.The compounds are finely dispersed with an average particle size of not less than 5 to 100.mu. in amounts of 0.5 to 5 weight percent, based on the reaction formulation. The release agents are preferably suspended in a portion of the polyol or polyolamine that is to be foamed.Type: GrantFiled: November 20, 1989Date of Patent: August 27, 1991Assignee: Th. Goldschmidt AGInventors: Helmut Lammerting, Hans-Joachim Kollmeier, Rolf-Dieter Langenhagen
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Patent number: 4772698Abstract: Process for producing molded polyurethane parts using as internal release agents, compounds of the general formula ##STR1## in amounts of 0.5 to 10 weight percent, based on the reaction formulation, in which at least one R.sup.2 radical in the average molecule represents ##STR2## R.sup.3 is a divalent hydrocarbon radical with 2 to 4 carbon atoms and R.sup.4, R.sup.5 are univalent hydrocarbon radicals or together are part of a morpholine or a piperazine ring. The molded polyurethane parts can be removed from the mold using significantly lower tensional forces without residues being built up on the mold.Type: GrantFiled: June 24, 1987Date of Patent: September 20, 1988Assignee: Th. Goldschmidt AGInventors: Helmut Lammerting, Hans-Joachim Kollmeier
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Patent number: 4728690Abstract: Process for producing molded polyurethane parts using as internal release agents, compounds of the general formula ##STR1## in amounts of 0.5 to 10 weight percent, based on the reaction formulation, in which at least one R.sup.2 radical in the average molecule represents ##STR2## R.sup.3 is a divalent hydrocarbon radical with 2 to 4 carbon atoms and R.sup.4, R.sup.5 are univalent hydrocarbon radicals or together are part of a morpholine or a piperazine ring. The molded polyurethane parts can be removed from the mold using significantly lower tensional forces without residues being built up on the mold.Type: GrantFiled: March 18, 1986Date of Patent: March 1, 1988Assignee: Th. Goldschmidt AGInventors: Helmut Lammerting, Hans-Joachim Kollmeier
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Patent number: 4692292Abstract: Process for manufacturing of molded objects by hot-pressing lignocellulose-containing materials with polyisocyanates as binders while using an agent to release the molded article from the surface of the metal press used. A mixture of the organosilicon compounds is applied onto the surface of the cauls or molds which faces the material to be pressed, and cured at a temperature from 100.degree. to 200.degree. C., preferably in the presence of known curing catalysts. The mixture of organosilicon compounds comprising(a) 20 to 65 weight percent of a silicone resin of the general formula ##EQU1## in which R.sup.1 is a low molecular weight alkyl radical with 1 to 4 carbon atoms,a has a value of 1 to 1.7,b has a value of 0.3 to 1.0;(b) 30 to 65 weight percent of an .alpha.,.omega.-methylsiloxanediol with an average molecular weight of 1,000 to 20,000;(c) 5 to 15 weight percent of a silicate ester of the general formula ##EQU2## in which R.sup.Type: GrantFiled: December 26, 1985Date of Patent: September 8, 1987Assignee: Th. Goldschmidt AGInventors: Hans-Joachim Kollmeier, Helmut Lammerting
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Patent number: 4478957Abstract: The invention relates to a process for the manufacture of highly resilient, cold-curing polyurethane foams with the distinctive feature that polysiloxane-polyoxyalkylene block copolymers with the following characteristics are used as foam stabilizers:(a) the polysiloxane block is linear or branched and contains an average of 4 to 25 silicon atoms, wherein the organic radicals linked to the silicon atoms are polyoxyalkylene or methyl radicals and up to 30% of the methyl radicals can be replaced by substituted alkyl radicals with 1 to 4 carbon atoms, and/or phenyl radicals, and mixtures thereof;(b) the polyoxyalkylene portion consists of at least two polyoxyalkylene blocks, A.sub.1 and A.sub.2, which are formed from oxyethylene and oxypropylene units, wherein block A.sub.1 is formed from 45 to 100 mole percent of oxyethylene units and 55 to 0 mole percent of oxypropylene units and block A.sub.Type: GrantFiled: September 15, 1983Date of Patent: October 23, 1984Assignee: Th. Goldschmidt AGInventors: Bernd-Juergen Klietsch, Hans-Joachim Kollmeier, Helmut Lammerting, Rolf-Dieter Langenhagen
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Patent number: 4042540Abstract: In the disclosed foaming process for manufacturing soft polyurethane foams on the basis of polyethers containing at least two hydroxy groups, the foaming is carried out in the presence of selected low-molecular weight, low-viscosity methylpolysiloxanes which do not cause disorders in the boundary regions of the foam or shrinkage.Type: GrantFiled: August 26, 1975Date of Patent: August 16, 1977Assignee: Th. Goldschmidt AGInventors: Helmut Lammerting, Rolf-Dieter Langenhagen, Gerd Rossmy, Peter Zaske