公开(公告)号：JPS6316515B2

公开(公告)日：1988-04-08

申请号：JP16238481

申请日：1981-10-12

Applicant: KAO CORP

Inventor： TSUNODA JUZO ,  MINEGISHI YUTAKA ,  YAMASHITA KAZUTAKA

IPC: D06M15/00 ,  D06M15/263

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：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.

公开(公告)号：JPS5921780A

公开(公告)日：1984-02-03

申请号：JP12841582

申请日：1982-07-23

Applicant: Kao Corp

Inventor： NAKASONE YUMIO ,  TANAKA YOSHIAKI ,  TAKEMOTO HIROTAKA ,  YAMASHITA KAZUTAKA

IPC: D06M15/00 ,  D06M15/327 ,  D06M15/333

公开(公告)号：JPS52126426A

公开(公告)日：1977-10-24

申请号：JP4318476

申请日：1976-04-16

Applicant: KAO CORP

Inventor： TAKAMORI SHIGERU ,  YAMASHITA KAZUTAKA ,  KOUNO YOSHINAO

IPC: C09D5/03 ,  C08G59/00 ,  C08G65/332 ,  C08L63/00 ,  C08L67/00 ,  C09D163/00

Abstract: PURPOSE:A resinous composition for powder coating characterized by the excellent properties of surface evenness, adhesion, impact resistance, hardness, etc. comprises the specific polycarboxylic acid formulated with the epoxy compound.

公开(公告)号：JP2003277235A

公开(公告)日：2003-10-02

申请号：JP2002075448

申请日：2002-03-19

Applicant: Kao Corp ,  花王株式会社

Inventor： ATSUGI TAKESHI ,  KASHIMOTO AKIO ,  NAKAYAMA HIDEHIKO ,  NONOMURA YOSHIMUNE ,  YAMASHITA KAZUTAKA ,  TSUGO KAZUICHI

IPC: A61K8/00 ,  A61K8/02 ,  A61K8/88 ,  A61K8/92 ,  A61Q1/00 ,  A61Q1/12 ,  A61K7/035 ,  A61K7/00

Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a solid powder cosmetic which can easily yield a solid powder cosmetic showing an excellent impact resistance and sensory evaluation.
SOLUTION: In the process for producing the solid powder cosmetic, a granulated substance made from a mixture containing a powder and an oil is pressure molded to obtain the solid powdery cosmetic. Upon pressure molding, the granulated substance has a particle size distribution wherein a particle size D50 corresponding to a cumulative frequency in the particle size distribution of 50% is 5-30 μm and a value (D90-D10)/D50 is ≤3. The mixture further contains a polymer dispersion. The powder is preferably hydrophobic or hydrophobed, and a polymer composing the polymer dispersion is preferably a coating film- forming polymer having an elastic modulus of 0.3-200 kg/cm
2 .
COPYRIGHT: (C)2004,JPO

Abstract translation: 待解决的问题：提供一种固体粉末化妆品的制造方法，其可以容易地得到显示出优异的耐冲击性和感官评价的固体粉末化妆品。 解决方案：在固体粉末化妆品的制造方法中，将由含有粉末和油的混合物制成的粒状物质进行加压成型，得到固体粉状化妆品。 在压制成型时，粒状物质的粒径分布为粒径分布为50％的累积频率的粒径D50为5-30μm，（D90-D10）/ D50的值为3。 混合物还含有聚合物分散体。 该粉末优选是疏水性或疏水性的，构成聚合物分散体的聚合物优选为具有0.3-200kg / cm 2弹性模量的涂膜形成聚合物。 版权所有（C）2004，JPO

公开(公告)号：JPH11195217A

公开(公告)日：1999-07-21

申请号：JP36140597

申请日：1997-12-26

Applicant: KAO CORP

Inventor： SATO MAKOTO ,  KOBAYASHI HIDEYUKI ,  YAMASHITA KAZUTAKA

IPC: C09D175/06 ,  G01Q60/00 ,  G11B5/70 ,  G11B5/702 ,  G11B5/706 ,  G11B5/71 ,  G11B5/714 ,  G11B5/738 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To provide the magnetic recording medium in which the running performance and the durability are improved without deteriorating the electromagnetic conversion characteristics. SOLUTION: Bearing ratio Tp is set into 3 to 60% measured at the slice level of a depth 45 nm from a maximum height Rp in the surface recessed and projected shape measured by the observation of the surface of a magnetic layer by means of an atomic force microscope. Moreover, a difference Δμ between maximum and minimum values of a friction coefficient μ of the magnetic layer is set to 0.1 to 0.0001 under the measuring conductions of a contact area of 5 mm , a mass of 2 g, a load of 0.04 to 0.2N, a speed of 3 mm/s and a measuring distance of 140 mm.

公开(公告)号：JPH11144234A

公开(公告)日：1999-05-28

申请号：JP30442897

申请日：1997-11-06

Applicant: KAO CORP

Inventor： HOSOYA MANABU ,  YAMASHITA KAZUTAKA

IPC: G11B5/716 ,  G11B5/73 ,  G11B5/738 ,  G11B5/78 ,  G11B5/704

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic tape excellent in the high density recording by suppressing the decrease of output or the increase of error in the manner of improving the dimensional stability under the environment preserving the high humidity. SOLUTION: This magnetic tape is constituted in such a manner that at least an intermediate layer and an upper magnetic layer are provided in this order on one surface of nonmangnetic supporters and a back coat layer is provided on the opposite surface. In this case, the drying thickness of the upper magnetic layer is

公开(公告)号：JPH10105958A

公开(公告)日：1998-04-24

申请号：JP25886696

申请日：1996-09-30

Applicant: KAO CORP

Inventor： NAKAYAMA HIDEHIKO ,  YAMASHITA KAZUTAKA ,  ISHIKAWA AKIRA

IPC: B05D5/12 ,  C08G59/50 ,  C09D5/23 ,  C09D163/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/842

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording medium which is capable of attaining high density recording and is excellent in application characteristics of magnetic coating materials and in durability. SOLUTION: In the magnetic recording medium provided with a supporting body and a magnetic layer as an uppermost layer, the magnetic layer is formed by applying the magnetic coating material containing ferromagnetic powders and binder components on the supporting body. The binder components contain an epoxy group containing resin, an amino group containing compound which has >=2 pieces of primary or secondary amino groups in a molecule and a polyisocyanate. After the amino group containing compound is blended with epoxy group containing resin, the polyisocyanate is blended therewith.

公开(公告)号：JPH1055531A

公开(公告)日：1998-02-24

申请号：JP20972596

申请日：1996-08-08

Applicant: KAO CORP

Inventor： YAMASHITA KAZUTAKA ,  NAKAYAMA HIDEHIKO ,  ISHIKAWA AKIRA

IPC: C09D5/23 ,  C09D163/00 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/735

Abstract: PROBLEM TO BE SOLVED: To improve the characteristics of a magnetic coating material as a coating material, to reduce error fate and to improve durability by using specified compds. as a binder and a curing agent in a magnetic layer. SOLUTION: A magnetic layer 4 is formed on a middle layer 3 by coating it with a magnetic coating material contg. a binder and a curing agent as well as magnetic powder, carbon powder, inorg. particles having a Mohs hardness of >=8, fatty acid and fatty acid ester. The binder has 3-10 epoxy groups in one molecule and a number average mol.wt. of 10,000-25,000. Since the binder and the curing agent soluble in the solvent for the magnetic coating material are used, the degree of crosslinking of a coating film after coating and drying is increased and the durability is improved. The curing agent has two prim. or sec. amino groups in one molecule and a number average mol.wt. of 500-25,000. In the case of 50,000, the resultant coating film is soft and is not durable.