公开(公告)号：JPS63199365A

公开(公告)日：1988-08-17

申请号：JP3293587

申请日：1987-02-16

Applicant: KAO CORP

Inventor： SATO YUKIYA ,  OTANI SHOJI ,  TAKEMURA KAZUNARI ,  TSUSHIMA RIKIO

IPC: G03G9/097 ,  G03G9/087 ,  G03G9/09

Abstract: PURPOSE:To permit uniform dispersion of an electrostatic charge control agent and to improve image quality by dispersing the charge control agent in the presence of polyethylene imine. CONSTITUTION:This toner contains a binder polymer (e.g.: styrene/n-butyl methacrylate copolymer), the charge control agent (A), coloring agent and the polyethylene imine (B). The control agent A is preferably an azo metallic complex dye (e.g.: the dye expressed by the formula) and the polymer B is a straight chain or branched polymer of 200-20,000 weight average mol.wt. This toner is obtd. by dispersing the control agent A, coloring agent, etc., in the presence of the polymer B into a polymerizable monomer for the binder, then subjecting the dispersion to a suspension polymn. The dispersibility of the control agent A is then improved and, therefore, the toner which decreases fogging and has excellent developability and printing resistance is obtd.

公开(公告)号：JPS63124224A

公开(公告)日：1988-05-27

申请号：JP27054086

申请日：1986-11-13

Applicant: KAO CORP

Inventor： KANNEN NAOKI ,  OKADA TOMOYUKI ,  TSUSHIMA RIKIO

IPC: G11B5/842

Abstract: PURPOSE:To improve output and durability in particular by coating a compd. incorporated with a perfluoroalkyl group and plural pieces of double bonds in one molecule on a magnetic coated film which is preliminarily partially cured and curing said film, thereby bonding the lubricating agent layer onto the magnetic coated film. CONSTITUTION:A magnetic coating compd. consisting of a mixture composed of a resin compsn. having the double bonds of the nature that the compd. is cured by electron rays, solvent and magnetic powder is coated on a base and after the solvent is removed, the coating is subjected to a surface smoothing treatment to form the magnetic coated film. The magnetic coated film is then precured by projecting the electron rays thereon and thereafter, the compd. contg. at least the perfluoroalkyl group and at least two electron rays curing double bonds in one molecule is coated thereon at the time of projecting the electron rays to said film and curing the film. The migration of the lubricating agent in the magnetic layer is thereby prevented and various defects associated with the addition or coating of the lubricating agent are overcome.

公开(公告)号：JPS6311697A

公开(公告)日：1988-01-19

申请号：JP15371286

申请日：1986-06-30

Applicant: KAO CORP

Inventor： YAMAMOTO YUZO ,  NAGAMORI HIROYUKI ,  TSUSHIMA RIKIO

IPC: C25D15/02

Abstract: PURPOSE:To eliminate the need for a surface treatment for painting and to form a plating film having excellent paint adhesiveness and corrosion resistance after painting by using a plating bath prepd. by incorporating a water soluble org. high polymer having the specific chemical structure at an adequate ratio into a Zn plating bath contg. a prescribed quantity of Zn ions. CONSTITUTION:>=1 kinds of the following water soluble org. high polymers are incorporated as the essential component at 0.5-300g per l of the plating bath into the Zn plating bath contg. 1-600g/l Zn ions. the above-mentioned high polymer refers to a sodium lignin sulfonate or the like which has >=1 arom. rings having >=1 hydroxyl groups as a substituent in the repeating unit, has 0.05-4 pieces of sulfonate groups per said unit, and has >=2 n of number of said unit and 1,000-1,000,000 average mol.wt. The co-deposition of metal and the above-mentioned high polymer arises in molecular order on the surface of a metallic material if said material is electroplated in said plating bath. A molecular composite film is thus formed thereon.

公开(公告)号：JPS6267563A

公开(公告)日：1987-03-27

申请号：JP20848185

申请日：1985-09-20

Applicant: KAO CORP

Inventor： TSUSHIMA RIKIO ,  TAKEMURA KAZUNARI ,  FUKUYAMA YUKIHIRO

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097

Abstract: PURPOSE:To obtain the titled toner having an excellent image quality by dispersing a carbon black in a polymerizable monomer in the presence of a specific benzylamine compd. followed by polymerizing it, thereby obtaining a sufficient dispersed state of the carbon black. CONSTITUTION:The titled toner is prepared by dispersing the carbon black in the monomer having a polymerizable unsatd. group in the presence of the benzylamine compd. shown by the formula followed by polymerizing it. In the formula, R and R are each 6-100 C a straight or a branched chain alkyl group or alkenyl group, R and R may be the same or the different each other, (n) is 0-10. Thus, the toner having an excellent dispersibility of a colorant, and having an improved photographic density of the toner and less tendency for generating a fog in copying, and also having excellent properties of developing, transferring, fixing and storing is obtd.

公开(公告)号：JPS6233328A

公开(公告)日：1987-02-13

申请号：JP17109685

申请日：1985-08-05

Applicant: KAO CORP

Inventor： KANNEN NAOKI ,  TSUSHIMA RIKIO ,  YAMASHITA KAZUTAKA ,  OKADA TOMOYUKI

IPC: G11B5/702 ,  C09D5/23 ,  C09D175/08

Abstract: PURPOSE:To improve the dispersibility of magnetic powder, surface smoothness and durability by consisting a binder of a polyurethane resin produced by using a specific lactone-modified diol. CONSTITUTION:The binder for magnetic recording consisting of the polyurethane resin produced by using the lactone-modified diol expressed by the formula is used. A magnetic layer constituted by dispersing ferromagnetic powder into such binder is provided on a nonmagnetic base. The lactone-modified diol to be used as the binder has preferably the number average mol.wt. ranging 400-60,000 in terms of the flexibility of the resulted polyurethane resin and the toughness of the resin. The ratio of the binder and the pulverous ferromagnetic powder is preferably in a 10-100pts.wt. binder range with 100pts. pulverous ferromagnetic powder. The pulverous ferromagnetic powder is exemplified by gamma-Fe2O3, mixed crystals or gamma-Fe2O3 and Fe3O4, Co-modified iron oxide, CrO.2, iron, etc. The dispersibility and durability are thereby extremely improved.

公开(公告)号：JPS6160809B2

公开(公告)日：1986-12-23

申请号：JP16002980

申请日：1980-11-13

Applicant: KAO CORP

Inventor： MATSUNAGA KINJIRO ,  OKUMURA TAKEO ,  NAITO YUKIO ,  TSUSHIMA RIKIO

IPC: A61K8/00 ,  A61K8/65 ,  A61Q5/04

公开(公告)号：JPS6160807B2

公开(公告)日：1986-12-23

申请号：JP16159980

申请日：1980-11-17

Applicant: KAO CORP

Inventor： MATSUNAGA KINJIRO ,  OKUMURA TAKEO ,  NAITO YUKIO ,  TSUSHIMA RIKIO

IPC: A61K8/00 ,  A61K8/40 ,  A61K8/41 ,  A61K8/65 ,  A61Q5/02 ,  A61Q5/12

公开(公告)号：JPS6160804B2

公开(公告)日：1986-12-23

申请号：JP1617281

申请日：1981-02-05

Applicant: KAO CORP

Inventor： ABE YOSHIAKI ,  TSUSHIMA RIKIO

IPC: A61K8/00 ,  A61K8/65 ,  A61K8/89 ,  A61K8/891 ,  A61K8/892 ,  A61K8/894 ,  A61K8/897 ,  A61Q5/00 ,  A61Q5/02 ,  A61Q5/06 ,  A61Q5/12 ,  A61Q7/00

公开(公告)号：JPS61255356A

公开(公告)日：1986-11-13

申请号：JP9755485

申请日：1985-05-08

Applicant: KAO CORP

Inventor： TSUSHIMA RIKIO ,  FUKUYAMA YUKIHIRO ,  TAKEMURA KAZUNARI ,  YASUDA YUTAKA

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097

Abstract: PURPOSE:To obtain a toner contg. a colorant with superior dispersibility, having an increased blackening degree and causing hardly fog during copying by dispersing carbon black in a monomer having a polymerizable unsatd. group in the presence of a specified alkyl(or alkenyl)succinic acid imide compound. CONSTITUTION:This toner contains a polymer binder, carbon black and an alkyl(or alkenyl)succinic acid image compound represented by formula I and/or formula II (where each of R and R' is 12-300C straight chain or branched alkyl or alkenyl and each of m and n is an integer of 0-10). The amount of the compound added is

公开(公告)号：JPS61198417A

公开(公告)日：1986-09-02

申请号：JP3850485

申请日：1985-02-27

Applicant: KAO CORP

Inventor： KANNEN NAOKI ,  TSUSHIMA RIKIO ,  YAMASHITA KAZUTAKA ,  OKADA TOMOYUKI

IPC: G11B5/702 ,  C09D5/23 ,  C09D175/04 ,  C09D175/12 ,  G11B5/714

Abstract: PURPOSE:To improve magnetic powder dispersibility, durability and surface smoothness by using a specific polyurethane resin as a binder. CONSTITUTION:The polyurethane resin having at least >=1 respectively among an SO2M (M is H, Li, Na or K) and primary or secondary OH group both in combination in the molecular chain is used. A magnetic recording medium is produced by coating a magnetic paint for which the polyurethane resin is used as the binder and to which pulverous ferromagnetic powder and additive, etc. are added together with an org. solvent, on a non-magnetic substrate and drying the coating. The ratio of the binder and the pulverous ferromagnetic powder is 10-100pts.wt., more preferably 20-50pts.wt. by 100pts.wt. pulverous ferromagnetic powder. The mechanical strength and wear resistance are not enough if the ratio of the binder is below 10pts.wt. The magnetic powder density in the magnetic layer decreases and the satisfactory performance (reproduced output, etc.) as the magnetic recording medium is not obtainable if the ratio of the binder is increased to 100pts.wt. or above.