Hoechst Aktiengesellschaft

Ticona Gmbh

Hoechst Research & Technology Deutschland Gmbh & Co. Kg

Hoechst Research Technology Deutchland Gmbh & Co. Kg

Deutschland Gmbh & Co. Kg

Hoechst Research & Technology

Horst-Tore Land

Toru Nakamura

Takuya Hoga

Toshimi Nishioka

Junichi Fukuzawa

Fredy Helmer-Metzmann

Frank Osan

Nobuyuki Kurokawa

Satoshi Arai

Walter Schubert

Michael-Joachim Brekner

Thomas Wehrmeister

Masayuki Arai

Frank Bohme

Reinhardt Kalus

Manfred Ratzsch

Michaela Gedan

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&#xb0; 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. The toner for developing an electrostatically charged image according to the invention is excellent in fixability, light transmission, and anti-toner spent properties, giving a sharp, high quality image, can be applied to any of a dry one-component magnetic toner, a dry one-component nonmagnetic toner, a dry two-component toner and a liquid toner, and exhibits marked effects particularly when used in a color toner.

Hot-roller fixing toner for developing electrostatically charged images

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.

Electrostatically charged image developing toner containing a polyolefin resin having a cyclic structure

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.

Toner for electrophotography

Coated carrier for developing electrostatically charged images

Electrophotographic toner

Polymers based on polyarylene siloxanes and freeradical-polymerizable

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 from

Fiber-reinforced cycloolefin copolymer material, process for its

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.

Amorphous polyesterimides which can be processed as thermoplastics

Growing community of inventors

Hofheim, Germany

Horst-Tore Land