公开(公告)号：FI890981A

公开(公告)日：1989-09-03

申请号：FI890981

申请日：1989-03-01

Applicant: MITSUI TOATSU CHEMICALS ,  OJI PAPER CO

Inventor： KANEDA KATSUMI ,  HYUGAJI TERUO ,  TANAKA AKIO ,  KURODA NOBUO ,  YAMAMOTO ITSURO ,  MATSUDA NORIAKI

IPC: D21H19/58 ,  D21H

Abstract: A coating composition for a cast-coated paper which principally comprises a pigment and an adhesive and in which the adhesive is composed of (A) a rubber latex having an average particle size of 0.1 to 0.3 micron and (B) a rubber latex or an acrylic emulsion having an average particle size of 0.5 to 1.5 micron and the sum of the solid content of the components (A) and (B) is in the range of 9 to 30 parts by weight per 100 parts by weight of the pigment is herein provided. The coating composition may further contain casein as a binder. In addition, inorganic compounds selected from NaCl, Na2SO4, ZnO and MgO and organic acid salts selected form formates or acetates of Ca, Zn, Mg may be added to the coating composition as coagulants. The use of the aforesaid coating composition makes it possible to produce cast-coated paper having excellent permeability, gloss and surface strength at a high speed.

公开(公告)号：DE68911554D1

公开(公告)日：1994-02-03

申请号：DE68911554

申请日：1989-03-01

Applicant: MITSUI TOATSU CHEMICALS ,  OJI PAPER CO

Inventor： KANEDA KATSUMI ,  HYUGAJI TERUO ,  TANAKA AKIO ,  KURODA NOBUO ,  YAMAMOTO ITSURO ,  MATSUDA NORIAKI

IPC: D21H19/58 ,  D21H19/44

Abstract: A coating composition for a cast-coated paper which principally comprises a pigment and an adhesive and in which the adhesive is composed of (A) a rubber latex having an average particle size of 0.1 to 0.3 micron and (B) a rubber latex or an acrylic emulsion having an average particle size of 0.5 to 1.5 micron and the sum of the solid content of the components (A) and (B) is in the range of 9 to 30 parts by weight per 100 parts by weight of the pigment is herein provided. The coating composition may further contain casein as a binder. In addition, inorganic compounds selected from NaCl, Na2SO4, ZnO and MgO and organic acid salts selected form formates or acetates of Ca, Zn, Mg may be added to the coating composition as coagulants. The use of the aforesaid coating composition makes it possible to produce cast-coated paper having excellent permeability, gloss and surface strength at a high speed.

公开(公告)号：FI890981A0

公开(公告)日：1989-03-01

申请号：FI890981

申请日：1989-03-01

Applicant: MITSUI TOATSU CHEMICALS ,  OJI PAPER CO

Inventor： KANEDA KATSUMI ,  HYUGAJI TERUO ,  TANAKA AKIO ,  KURODA NOBUO ,  YAMAMOTO ITSURO ,  MATSUDA NORIAKI

IPC: D21H19/58 ,  D21H

Abstract: A coating composition for a cast-coated paper which principally comprises a pigment and an adhesive and in which the adhesive is composed of (A) a rubber latex having an average particle size of 0.1 to 0.3 micron and (B) a rubber latex or an acrylic emulsion having an average particle size of 0.5 to 1.5 micron and the sum of the solid content of the components (A) and (B) is in the range of 9 to 30 parts by weight per 100 parts by weight of the pigment is herein provided. The coating composition may further contain casein as a binder. In addition, inorganic compounds selected from NaCl, Na2SO4, ZnO and MgO and organic acid salts selected form formates or acetates of Ca, Zn, Mg may be added to the coating composition as coagulants. The use of the aforesaid coating composition makes it possible to produce cast-coated paper having excellent permeability, gloss and surface strength at a high speed.

公开(公告)号：JPH05230795A

公开(公告)日：1993-09-07

申请号：JP3171692

申请日：1992-02-19

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  SHIIYAMA EISUKE ,  TANAKA AKIO ,  HOSHINO FUTOSHI

IPC: D21H19/38

Abstract: PURPOSE:To obtain the subject composition having excellent coating suitability and giving a coated paper having improved printability by including a specific plastic pigment into a pigment. CONSTITUTION:The objective composition is produced by incorporating 100 pts.wt. of pigment with 2-10 pts.wt. (in terms of solid) of a plastic pigment composed mainly of an olefinic aromatic monomer and/or monoolefinic monomer and having an average particle diameter of 30-100nm.

公开(公告)号：JPH04146294A

公开(公告)日：1992-05-20

申请号：JP26837890

申请日：1990-10-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  TANAKA AKIO

IPC: D21H19/36 ,  D21H19/38 ,  D21H19/44 ,  D21H19/56 ,  D21H19/58

Abstract: PURPOSE:To obtain the subject composition producible cast paper having high glass and an uniform cast face by using respectively a specific plastic pigment contained in a pigment and a latex as a binder. CONSTITUTION:The subject composition contains (A) a pigment containing a plastic pigment of a copolymer of an aliphatic conjugated diolefin-based monomer with an olefin-based aromatic monomer or a monoolefin-based monomer as a comonomer and having 70-100 deg.C of the lowest film-forming temperature and 0.3-0.5mum granular diameter in an amount of 3-17wt.% calculated as a solid and (B) a latex binder of a copolymer of an aliphatic conjugated diolefin- based monomer with an olefin-based aromatic monomer or a monoolefin-based monomer as a comonomer. A content of the component B is preferably 10-20 pts.wt. to 100 pts.wt. of the component A.

公开(公告)号：JPH0488072A

公开(公告)日：1992-03-19

申请号：JP20117290

申请日：1990-07-31

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  TANAKA AKIO

IPC: C09D109/06 ,  C09D109/10 ,  C09D121/00 ,  C09D151/00 ,  C09D151/08 ,  D21H19/36 ,  D21H19/58 ,  D21H19/62 ,  D21H25/00

Abstract: PURPOSE:To provide the subject composition containing a specific aqueous urethane resin copolymerized with an acrylic monomer, an adhesive composed of a synthetic rubber latex and a pigment as main components and giving a cast-coated paper having excellent glossy surface and printability. CONSTITUTION:The objective composition is composed of (A) 100 pts.wt. of a pigment such as calcium carbonate, (B) 2-6 pts.wt. of an aqueous urethane resin copolymerized with an acrylic monomer and produced by the copolymerization of (i) a monoolefinic monomer and/or an olefinic aromatic monomer and (ii) an aqueous urethane resin and (C) 10-15 pts.wt. of a synthetic rubber latex composed mainly of an aliphatic conjugated diolefin monomer, an olefinic aromatic monomer and/or a monoolefinic monomer. The weight ratio of the monomer (i) to the monomer (ii) of the component B (i:ii) is 30:70 to 70:30.

公开(公告)号：JPH03199493A

公开(公告)日：1991-08-30

申请号：JP33829389

申请日：1989-12-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  TANAKA AKIO ,  YAMAZAKI MASAFUMI

IPC: C09D151/04 ,  C09D151/00 ,  D21H19/00 ,  D21H19/56 ,  D21H19/58

Abstract: PURPOSE:To obtain the subject composition capable of providing excellent glossiness, surface strength and ink setting properties by using a pigment and an adhesive of a synthetic rubber-based binder pigment having a core-shell structure as chief components. CONSTITUTION:(A) A pigment such as titanium oxide in an amount of 100 pts.wt. is blended with (B) 5-15 pts.wt. synthetic rubber-based binder pigment, obtained by polymerizing a latex, such as SBR containing an aliphatic conjugated diolefinic monomer in an amount of 30-40wt.% in the constituent components to provide a latex of SBR, etc., at >=80% polymerization rate, then adding a high Tg composition olefinic monomer containing the aforementioned diolefinic monomer in an amount of 6-16wt.% in the constituent components and carrying out emulsion polymerization and having 60-95wt.% gel content, as necessary, further a defoaming agent, dispersing agent, etc., to afford the objective composition.

公开(公告)号：JPH03199484A

公开(公告)日：1991-08-30

申请号：JP33829289

申请日：1989-12-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  TANAKA AKIO ,  TOMITA MASAO

IPC: D21H19/36

Abstract: PURPOSE:To obtain a coating composition consisting of adhesives consisting of specific two kind of aliphatic conjugated diolefin based monomer-containing polymers and pigment and capable of efficiently producing cast coat paper having excellent gloss face and printability by applying the composition to raw paper, pressing the coated paper to mirror drum and drying the coated paper. CONSTITUTION:A coating composition consisting of adhesive composed of 50-70% latex obtained by polymerizing an aliphatic conjugated diolefin monomer (preferably having -57--29 deg.C glass transition point) with a monomer such as butadiene, styrene or methyl methacrylate at a ratio of 45-60wt.% and 50-30% latex obtained by polymerizing an aliphatic conjugated diolefin monomer (preferably having +12-+42 deg.C glass transition point) with the above-mentioned monomer at a ratio of 15-25% and pigment (e.g. clay) is applied to a raw paper and pressed to mirror drum and dried to provide the cast coat paper without causing pinhole, blister, drum picking, etc.

公开(公告)号：JPH03199483A

公开(公告)日：1991-08-30

申请号：JP33829189

申请日：1989-12-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KANEDA KATSUMI ,  TANAKA AKIO ,  TOMITA MASAO

IPC: D21H19/36

Abstract: PURPOSE:To obtain the title composition having excellent gloss, printability and uniformity of surface and suitable in efficient production of cast coat paper by adding a pigment to a specific latex obtained by copolymerizing plural olefin based monomers. CONSTITUTION:(A) An undissociable functional group-modified latex obtained by subjecting (i) 1-7wt.% undissociable olefin-based unsaturated monomer such as hydroxyethyl acrylate to emulsion polymerization with (ii) 99-93wt.% aliphatic monoolefin-based monomer is blended with (B) a pigment such as clay or titanium oxide, preferably at an amount of the component A of 5-20 pts.wt. based on 100 pts. wt. component B to provide the aimed composition.

公开(公告)号：JPH01223172A

公开(公告)日：1989-09-06

申请号：JP4750088

申请日：1988-03-02

Applicant: MITSUI TOATSU CHEMICALS ,  OJI PAPER CO

Inventor： KURODA NOBUO ,  YAMAMOTO ITSURO ,  MATSUDA NORIAKI ,  KANEDA KATSUMI ,  HIUGAJI AKIO ,  TANAKA AKIO

IPC: B32B29/06 ,  C09D5/00 ,  C09D109/00 ,  C09D121/00 ,  C09D133/04 ,  C09D133/06 ,  D21H19/00 ,  D21H19/44 ,  D21H19/58

Abstract: PURPOSE:To obtain the subject composition imparting a cast coated paper with excellent quality having balanced gloss, surface strength and gas permeability in spite of production at a high speed, by compounding specific amounts of a latex and an acrylic emulsion as an adhesive. CONSTITUTION:The objective composition is produced by compounding (A) 100pts.wt. of a pigment with (B) 5-19pts.wt. of a latex having a gel content of >=50% and (C) 3-13pts.wt. of an acrylic emulsion having a gel content of >=50%. A cast coated paper can be produced by coating said composition. It has excellent releasability in spite of high-speed production and gives a cast coated paper having high gloss and good surface strength without causing the generation of pit.