LITHOGRAPHIC PRINTING PLATE, MANUFACTURE THEREOF AND LITHOGRAPHIC PRINTING PLATE ORIGINAL PLATE

    公开(公告)号:JPH08282142A

    公开(公告)日:1996-10-29

    申请号:JP2523996

    申请日:1996-02-13

    Abstract: PURPOSE: To obtain a lithographic printing plate in which ink can be efficiently repelled by setting the water absorption amount of a non-printing element part made of a hydrophilic swelled layer to a specific range and setting the amount of the part to less than the amount of the non-printing element part. CONSTITUTION: In a lithographic printing plate which can be formed of a photosensitive lithographic printing plate original plate using pure water as moistening water without necessity of physical development, the water absorption amount of a non-printing element part made of a hydrophilic swelled layer is set to 1 to 50g/m , and the water absorption amount of a printing element part is set to less than the amount of the non-printing element part. In this case, the thickness of the swelled layer is set to 0.2 to 10g/m , and the water absorption rate of the swelled layer is set to 10 to 2000%. An active light ray is emitted to the surface of the original plate having the swelled layer to generate the difference of the amounts between the element part and the non-printing element part, and the lithographic printing plate in which ink can be efficiently repelled is manufactured.

    POLYESTER HOLLOW MOLDED PRODUCT
    32.
    发明专利

    公开(公告)号:JPH07100904A

    公开(公告)日:1995-04-18

    申请号:JP24721193

    申请日:1993-10-01

    Abstract: PURPOSE:To enhance moldability, heat resistance and impact resistance by mixing a reinforcing filler with a cyclohexylenedimethylene terephthalate type polyester resin with specific intrinsic viscosity containing a repeating unit wherein a terephthalic acid residue and a 1,4-cyclohexanedimethanol residue are bonded. CONSTITUTION:1-40wt.% of a reinforcing.filler is compounded with a cyclohexylenedimethylene terephthalate type polyester resin with intrinsic viscosity of 0.5-2.0 containing 80mol% or more of a repeating unit wherein a terephthalic acid residue and 1,4-cyclohexanedimethanol residue are bonded to prepare a resin compsn. which is, in turn, subjected to blow molding. The cis/trans ratio (mol ratio) of the 1,4-cyclohexane ring PCT type polyester is pref. 60/40-10/90. The reinforcing filler is a fibrous, granular or flaky filler and a glass fiber is especially pref.

    RESIN COMPOSITION FOR LAMP REFLECTOR IMPROVED IN VIVIDNESS

    公开(公告)号:JPH0797508A

    公开(公告)日:1995-04-11

    申请号:JP24115593

    申请日:1993-09-28

    Abstract: PURPOSE:To obtain a resin composition useful for lamp reflector for of automobiles, etc., having improved vividness, excellent in heat resistance and mechanical characteristics, having low specific gravity by blending a polyester, etc., with inorganic reinforcing materials having specific shapes. CONSTITUTION:This composition contains (A) 20-50 pts.wt. of a poly(cyclohexylenedimethylene terephthalate)-based polyester, (B) 0-25 pts.wt. of a poly(phenylene sulfide) (e.g. a compound of the formula) (with the proviso that an amount of the component added does not exceed that of the component A), (C) 0-1 pts.wt. of a glass fiber, (D) 10-35 pts.wt. of a fibrous reinforcing material other than the component C and (E) 25-69 pts.wt. of a particulate reinforcing material, based on 100 pts.wt. of total composition. Furthermore, the component D has >=4 aspect ratio and 0.1-10mum diameter and >=50% of particles of the component E has

    PRODUCTION OF COMPOLYMERIZED POLYESTER

    公开(公告)号:JPH05331275A

    公开(公告)日:1993-12-14

    申请号:JP34462292

    申请日:1992-12-24

    Abstract: PURPOSE:To obtain a copolyester having excellent heat-resistance, flowability, surface-smoothness, optical anisotropy and mechanical property and useful for fiber, film, etc., by copolymerizing a polyethylene terephthalate, etc., with specific amounts of p-hydroxybenzoic acid and acetic anhydride, etc. CONSTITUTION:The copolyester composed of the structural units of formula I to formula III (R1 is alkylene; R2 is bivalent aromatic group) at a molar ratio [I/(I+II)] of 0.6-0.9 and a molar ratio (II/III) of essentially 1 is produced by continuously or dividedly adding p-hydroxybenzoic acid and acetic anhydride or p-acetoxybenzoic acid to a polymerization system.

    AROMATIC POLYESTER HAVING IMPROVED FLUIDITY

    公开(公告)号:JPH01115926A

    公开(公告)日:1989-05-09

    申请号:JP27233787

    申请日:1987-10-28

    Abstract: PURPOSE:To obtain the subject polyester having excellent fluidity, heat-resistance and mechanical properties and suitable for formed film article, etc., by copolymerizing hydroxybenzoic acid, an aromatic dihydroxyl compound, diphenyl ether dicarboxylic acid, etc., at specific ratios. CONSTITUTION:The objective polyester having a logarithmic viscosity of 1.0-20.0dl/g is produced by the polycondensation of (A) 40-90mol.% of p- hydroxybenzoic acid, (B)

    EASILY-SLIDABLE MEDICAL TOOL
    36.
    发明专利

    公开(公告)号:JP2003144541A

    公开(公告)日:2003-05-20

    申请号:JP2001347759

    申请日:2001-11-13

    Inventor: TABATA KENICHI

    Abstract: PROBLEM TO BE SOLVED: To obtain a medical tool that becomes highly slidable when the tool is wet, can be bonded well to its underlying layer, and is hardly damaged while it is maneuvered. SOLUTION: This medical tool is constituted by providing a coating layer containing a (meth)acrylate unit and a copolymer containing a vinyl alcohol unit on a substrate. The coating layer has a swelling degree of 50-700% to pure water.

    DIRECT LITHOGRAPHY TYPE LITHOGRAPHIC PRINTING PLATE ORIGINAL PLATE AND MANUFACTURE OF LITHOGRAPHIC PRINTING PLATE

    公开(公告)号:JP2000043437A

    公开(公告)日:2000-02-15

    申请号:JP14144899

    申请日:1999-05-21

    Abstract: PROBLEM TO BE SOLVED: To stably manufacture a press plate by sequentially providing a thermosensitive curable ink coating layer having a specific thickness and containing photothermal conversion substance and a polymer layer having an oxygen permeability of a specific thickness on a hydrophilic base thereby simplifying as compared with a conventional direct lithography type lithographic printing plate. SOLUTION: A hydrophilic swelling layer having properties of a dry film thickness of 5 μm or less, a water absorption amount of 1 to 50 g/m2 and a water swelling rate of 10 to 2,000%, a thermosensitive layer containing a compound group curable by photothermal conversion substance and a heat and a dry film thickness of 5 μm or less, and a polymer layer for forming a film of 1 μm or more are sequentially provided on a base. Oxygen permeability of the polymer layer is set to 30 cm3.cm-2.24 hr-1.atm-1 or less. A laser beam is illuminated to this master to cure the thermosensitive layer of an exposure part, and then the polymer layer is released. Thus, the thermosensitive layer of an unexposure part is released together with the polymer layer, the hydrophilic swelling layer of a non-image part is exposed, thereby forming an ink repellent non-image part.

    LASER SENSITIVE LITHOGRAPHIC PRINTING PLATE ORIGINAL PLATE AND ITS MANUFACTURE

    公开(公告)号:JPH11291654A

    公开(公告)日:1999-10-26

    申请号:JP9440598

    申请日:1998-04-07

    Abstract: PROBLEM TO BE SOLVED: To obtain a high ink repellency and excellent printing durability by sequentially providing an ink receiving layer, a heat sensitive layer and a hydrophilic swelling layer in this order on a base plate, forming the heat sensitive layer of a thin film of a carbon and/or metal of a specific film thickness, and forming the ink receiving layer of a specific compound. SOLUTION: To efficiently absorb a laser beam, a heat sensitive layer is formed of a thin film having a film thickness of 1,000 Angstrom or less made of a carbon and/or a metal. An ink receiving layer has rigid adhesive properties of the plate to the sensitive layer and carries a role of a thermal insulating layer. The receiving layer is made of a polymer compound obtained from a monomer having a hydroxyl group, carbonyl group, carboxyl group, isocyanate group, or epoxy group or a compound having a hydroxyl group, carbonyl group, carboxyl group, or epoxy group. Since the receiving layer contains a chemical bond having such an oxygen or a functional group having an oxygen, adhesive properties of the receiving layer to a hydrophilic swelling layer become rigid, and an ink repellency and printing durability are improved.

    LITHOGRAPHIC PRINTING PLATE
    40.
    发明专利

    公开(公告)号:JPH11291653A

    公开(公告)日:1999-10-26

    申请号:JP9440498

    申请日:1998-04-07

    Abstract: PROBLEM TO BE SOLVED: To obtain a lithographic printing plate having an excellent ink repellency and high printing durability without desensitizing by sequentially providing a primer layer and a hydrophilic swelling layer on a base plate, incorporating a gelatin, casein or the like in the primer layer and incorporating a crosslinking structure therein. SOLUTION: A primer layer necessarily contains a protein and/or a synthetic resin and has a crosslinking structure. As the protein used for the primer layer, one or more protein selected from a gelatin, casein, albumin, or soybean protein. As the resin, a polyvinylether, polyvinyl pyrrolidone or the like is used. The structure may be crosslinked by modifying part of the protein and/or the resin by heating or the like or by using a crosslinker for forming the structure. The lithographic printing plate having a hydrophilic swelling layer using such a primer layer has excellent printing durability and good ink repellency even after printing many sheets.

Patent Agency Ranking