Patents by Inventor Horst-Tore Land
Horst-Tore Land 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: 7252918Abstract: This invention relates to a toner for developing an electrostatically charged image of a heat roller type copier or printer, the toner consisting essentially of a binder resin, a colorant and a charge control agent, in which the binder resin at least includes a polyolefin resin having a cyclic structure, and a polyolefin resin of a cyclic structure having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, a heat distortion temperature (HDT) by DIN53461-B of 70° C. or higher, and a number average molecular weight of 7,500 or more and a weight average molecular weight of 15,000 or more, as measured by GPC, is contained in a proportion of less than 50% by weight based on the entire binder resin.Type: GrantFiled: July 29, 1996Date of Patent: August 7, 2007Assignee: Ticona GmbHInventors: Toru Nakamura, Toshimi Nishioka, Takuya Hoga, Nobuyuki Kurokawa, Junichi Fukuzawa, Horst-Tore Land, Fredy Helmer-Metzmann
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Patent number: 7049040Abstract: A toner for development of an electrostatically charged image, said toner comprising a binder resin, a colorant, a function imparting agent, and a charge control agent, wherein said binder resin at least contains a polyolefin resin having a cyclic structure, said polyolefin resin is composed of a resin or resin fraction having a number average molecular weight (Mn), as measured by GPC, of less than 7,500 and a resin or resin fraction having said number average molecular weight of 7,500 or more, and in said polyolefin resin having a cyclic structure, a resin or resin fraction having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, and a number average molecular weight (Mn) of 7,500 or more and a weight average molecular weight (Mw) of 15,000 or more, as measured by the GPC method, is contained in a proportion of less than 50% by weight based on the entire binder resin.Type: GrantFiled: December 25, 1997Date of Patent: May 23, 2006Assignee: Ticona GmbHInventors: Frank Osan, Thomas Wehrmeister, Horst-Tore Land, Toshimi Nishioka, Junichi Fukuzawa, Toru Nakamura, Takuya Hoga, Masayuki Arai, Satoshi Arai
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Publication number: 20030152858Abstract: A toner for development of an electrostatically charged image, said toner comprising a binder resin, a colorant, a function imparting agent, and a charge control agent, wherein said binder resin at least contains a polyolefin resin having a cyclic structure, said polyolefin resin is composed of a resin or resin fraction having a number average molecular weight (Mn), as measured by GPC, of less than 7,500 and a resin or resin fraction having said number average molecular weight of 7,500 or more, and in said polyolefin resin having a cyclic structure, a resin or resin fraction having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, and a number average molecular weight (Mn) of 7,500 or more and a weight average molecular weight (Mw) of 15,000 or more, as measured by the GPC method, is contained in a proportion of less than 50% by weight based on the entire binder resin.Type: ApplicationFiled: August 26, 1999Publication date: August 14, 2003Inventors: FRANK OSAN, THOMAS WEHRMEISTER, HORST-TORE LAND, TOSHIMI NISHIOKA, JUNICHI FUKUZAWA, TORU NAKAMURA, TAKUYA HOGA, MASAYUKI ARAI, SATOSHI ARAI
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Publication number: 20020025485Abstract: This invention relates to a toner for developing an electrostatically charged image of a heat roller type copier or printer, the toner consisting essentially of a binder resin, a colorant and a charge control agent, in which the binder resin at least includes a polyolefin resin having a cyclic structure, and a polyolefin resin of a cyclic structure having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, a heat distortion temperature (HDT) by DIN53461-B of 70° C. or higher, and a number average molecular weight of 7,500 or more and a weight average molecular weight of 15,000 or more, as measured by GPC, is contained in a proportion of less than 50% by weight based on the entire binder resin.Type: ApplicationFiled: May 20, 1998Publication date: February 28, 2002Inventors: TORU NAKAMURA, TOSHIMI NISHIOKA, TAKUYA HOGA, NOBUYUKI KUROKAWA, JUNICHI FUKUZAWA, HORST-TORE LAND, FREDY HELMER-METZMANN
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Patent number: 6162572Abstract: This invention relates to a toner for electrophotography which develops an electrostatically charged image, the toner at least containing a coloring agent, a binder resin, a charge control agent, and a functioning agent, wherein low molecular weight polyolefin wax obtained by a metallocene type polymerization catalyst is contained as the function imparting agent. The toner of the invention is excellent in fixability, and has offset preventing properties, heat response characteristic, anti-spent toner properties, and storage stability, which can thus obtain a sharp, high quality image.Type: GrantFiled: March 21, 2000Date of Patent: December 19, 2000Assignee: Hoechst Research & Technology Deutchland GmbH & Co. KGInventors: Junichi Fukuzawa, Takuya Hoga, Toru Nakamura, Toshimi Nishioka, Horst-Tore Land, Fredy Helmer-Metzmann
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Patent number: 6068959Abstract: This invention relates to a coated carrier for development of an electrostatically charged image, comprising carrier core particles coated with a coating resin; wherein the coating resin at least includes a polyolefin resin having a cyclic structure; a polyolefin resin of a cyclic structure having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, a heat distortion temperature (HDT) by DIN53461-B of 70 .degree. C. or higher, and a number average molecular weight of 7,500 or more and a weight average molecular weight of 15,000 or more, as measured by GPC, is contained in an amount of less than 50% by weight based on the entire coating resin; and the coating resin is used for coating in an amount of 1 to 30% by weight based on the carrier core particles. The present invention can obtain a coated carrier which exhibits high anti-spent toner effect and excellent charge control properties during development with a dry toner.Type: GrantFiled: May 20, 1998Date of Patent: May 30, 2000Assignees: Hoechst Research & Technology, Deutschland GmbH & Co. KGInventors: Toru Nakamura, Toshimi Nishioka, Takuya Hoga, Nobuyuki Kurokawa, Junichi Fukuzawa, Horst-Tore Land, Fredy Helmer-Metzmann
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Patent number: 6052940Abstract: This invention relates to a toner for electrophotography which develops an electrostatically charged image, the toner at least containing a coloring agent, a binder resin, a charge control agent, and a functioning agent, wherein low molecular weight polyolefin wax obtained by a metallocene type polymerization catalyst is contained as the function imparting agent. The toner of the invention is excellent in fixability, and has offset preventing properties, heat response characteristic, anti-spent toner properties, and storage stability, which can thus obtain a sharp, high quality image.Type: GrantFiled: May 20, 1998Date of Patent: April 25, 2000Assignee: Hoechst Research & Technology Deutschland GmbH & Co. KGInventors: Junichi Fukuzawa, Takuya Hoga, Toru Nakamura, Toshimi Nishioka, Horst-Tore Land, Fredy Helmer-Metzmann
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Patent number: 5633332Abstract: Polymers can be obtained by free-radical polymerization of monomers in the presence of a dissolved polysiloxane. The free-radical-polymerizable monomers used are at least one compound of the formula I ##STR1## where R.sup.1 and R.sup.2 are, independently of one another, hydrogen, COOH, C.sub.1 -C.sub.18 -alkyl, cyclohexyl, C.sub.1 -C.sub.4 -alkyl-cyclohexyl, C.sub.6 -C.sub.10 -bicycloalkyl, C.sub.6 -C.sub.18 -tricycloalkyl,R.sup.3 is hydrogen or methyl,R.sup.4 is hydrogen, (C.sub.1 -C.sub.20)-alkyl, 2-hydroxypropyl, glycidyl,--[CH.sub.2 CH.sub.2 --O].sub.n H, having n=1 to 5,--[CH.sub.2 ].sub.m --OH, having m=3 to 18, in particular m=3 to 8,--[CH.sub.2 ].sub.2 O--[CO--(CH.sub.2).sub.5 ].sub.x OH, where x=a number from 1 to 3, or--[CH.sub.2 CHOHCH.sub.2 ]--O--(CO)R,where R is a C.sub.1 to C.sub.18 -alkyl radical.The polysiloxane used is at least one aromatic polyarylene siloxane of the formula III ##STR2## where R.sup.9 and R.sup.10 are, independently of one another, a C.sub.1 -C.sub.12 -alkyl radical, a C.Type: GrantFiled: April 26, 1995Date of Patent: May 27, 1997Assignee: Hoechst AktiengesellschaftInventors: Horst-Tore Land, Walter Schubert, Reinhardt Kalus
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Patent number: 5428098Abstract: A fiber-reinforced cycloolefin polymer material comprises 1 to 99% by weight of reinforcing fibers, in particular glass fibers, and 99 to 1% by weight of a cycloolefin copolymer which is built up froma) at least one (polycyclo)olefin which is derived from norbornene, for example tetracyclododecene, and b) at least one olefin which is chosen from monocycloolefins having 4 to 12 C atoms (VII) and/or the group of acyclic olefins VIII ##STR1## in which R.sup.9, R.sup.10, R.sup.11 and R.sup.12 are identical or different and are a hydrogen atom or a C.sub.1 -C.sub.8 -alkyl radical. VII is preferably ethylene. The monomer units of the (polycyclo)olefin in the cycloolefin copolymer molecule are in each case separated by monomer units of the cyclic olefins VII and/or of the acyclic olefins of the formula VIII.Type: GrantFiled: January 27, 1994Date of Patent: June 27, 1995Assignee: Hoechst AktiengesellschaftInventors: Michael-Joachim Brekner, Horst-Tore Land, Frank Osan
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Patent number: 5369209Abstract: The invention relates to amorphous polyesterimides which comprises 50 to 100 mole-% of units of formula II ##STR1## and from 0 to 50 mole-% of units of formula ##STR2## in which units R.sub.1 and R.sub.2, independentlyof one another, are H, branched or unbranched alkyl radicals having 1 to 6 carbon atoms, branched or unbranched alkoxy radicals having 1 to 6 carbon atoms, or F, Cl or Br.The polyesterimides according to the invention are suitable for the production of molding compositions, moldings, fibers and films.Type: GrantFiled: August 3, 1993Date of Patent: November 29, 1994Assignee: Hoechst AktiengesellschaftInventors: Horst-Tore Land, Michaela Gedan, Manfred Ratzsch, Frank Bohme