Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An anti-clouding agent composition comprising (a) at least one kind of multivalent alcohol esters of higher fatty acid having 10 to 20 carbons, and (b) at least one kind of derivatives of montanic acid wax selected from the group of montanic acid wax-alkylene oxide adduct, multivalent alcohol ester of montanic acid wax-alkylene oxide adduct represented by sorbitan ester of montanic acid wax-ethylene oxide adduct, and multivalent alcohol ester of montanic acid wax is kneaded and incorporated into a synthetic resin film to form a film. Thereby a synthetic resin film for agriculture which is excellent in an anti-clouding property at lower temperature, an initial anti-clouding property and an anti-clouding lasting property, besides excellent in transparency can be obtained.

Abstract: A synthetic resin film for agriculture suited as a covering material for greenhouses or the like, which shows good anti-clouding and anti-fogging properties immediately after being spread and for longer period than 2 years. The synthetic resin film for agriculture is obtained by using (a) an ester of sorbitan with a higher fatty acid mainly containing 24 to 34 carbon atoms (montanic acid wax), an ester of glycerin with montanic acid wax and/or alkylene oxide adducts thereto and/or an ester of polyoxyalkylene with montanic acid wax as an anti-clouding agent, and (b) a fluorine-containing surfactant as an anti-fogging agent, kneading them with a film-forming resin such as vinyl chloride resin, polyethylene, ethylene/vinyl acetate copolymer, and forming it into a film.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.