中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

71 records (took 0.023 seconds)

    RADIATION SENSITIVE COMPOSITION INCLUDING HALOALKYL- S-TRIAZINE, ACID SENSITIVE DYESTUFF AND POSITIVE ACTING DIAZO OXIDE
    14.
    发明专利
    RADIATION SENSITIVE COMPOSITION INCLUDING HALOALKYL- S-TRIAZINE, ACID SENSITIVE DYESTUFF AND POSITIVE ACTING DIAZO OXIDE 未知

    公开(公告)号：CA1183035A

    公开(公告)日：1985-02-26

    申请号：CA405073

    申请日：1982-06-14

    Applicant: POLYCHROME CORP

    Inventor： SHELNUT JAMES ,  GOLDA EUGENE ,  WILKES ALAN ,  SHIMAZU KEN-ICHI

    IPC: G03C1/72 ,  G03F7/00 ,  G03F7/004 ,  G03F7/023 ,  G03F7/105 ,  G03F7/26 ,  G03C1/54

    Abstract: A colored, positive-acting, radiation-sensitive composition whose color is extinguished or greatly decreased in intensity upon irradiation comprising at least one acid-free resin, at least one component which upon irradiation yields acidic and/or free radical products, at least one acid and/or free radical sensitive dyestuff and at least one positive-acting component; positiveacting elements comprising suitable support materials at least one surface of which has been coated with the above composition and lithographic printing plates comprising the above elements, wherein the support materials are lithographically suitable support materials, which have been imagewise exposed to radiation whereby there is a high contrast, before development, between the colored image areas and less intensely colored or colorless nonimage areas, the image areas of said plates being additionally highly stable against aqueous alkaline developers after development to remove the exposed non-image areas of the composition and more highly colored than the non-image areas of the revealed substrate surface.

    15.
    发明专利
    未知

    公开(公告)号：FR2510771A1

    公开(公告)日：1983-02-04

    申请号：FR8210559

    申请日：1982-06-15

    Applicant: POLYCHROME CORP

    Inventor： SHELNUT JAMES ,  GOLDA EUGENE ,  WILKES ALAN ,  SHIMAZU KEN-ICHI

    IPC: G03C1/72 ,  G03F7/00 ,  G03F7/004 ,  G03F7/023 ,  G03F7/105 ,  G03F7/26 ,  G03C1/68

    Abstract: A colored, positive-acting, radiation-sensitive composition whose color is extinguished or greatly decreased in intensity upon irradiation comprising at least one acid-free resin, at least one component which upon irradiation yields acidic and/or free radical products, at least one acid and/or free radical sensitive dyestuff and at least one positive-acting component; positive-acting elements comprising suitable support materials at least one surface of which has been coated with the above composition and lithographic printing plates comprising the above elements, wherein the support materials are lithographically suitable support materials, whch have been imagewise exposed to radiation whereby there is a high contrast, before development, between the colored image areas and less intensely colored or colorless non-image areas, the image areas of said plates being additionally highly stable against aqueous alkaline developers after development to remove the exposed non-image areas of the composition and more highly colored than the non-image areas of the revealed substrate surface.

    Developing and lacquering compsn. for lithographic printing plates - obtd. by mixing organic lithium salt and resin solns.
    17.
    发明专利
    Developing and lacquering compsn. for lithographic printing plates - obtd. by mixing organic lithium salt and resin solns. 未知

    公开(公告)号：FR2489541A1

    公开(公告)日：1982-03-05

    申请号：FR8018820

    申请日：1980-08-29

    Applicant: POLYCHROME CORP

    Inventor： GRUENBERG GREGORY VON ,  GOLDA EUGENE ,  ROWE WILLIAM

    IPC: B41N3/08 ,  G03F7/32 ,  G03C5/34 ,  G03C11/08

    Abstract: A one-step developing and lacquering compsn. is prepd. by mixing (A) an aq. soln. of at least 1wt.% of a Li salt of a 1-36C organic cpd. having at least one acidic H; and (B) a water-miscible organic solvent soln. contg. 5-20wt.% of an ink-receptive, film-forming resin in the ratio 1:3-30:1. The use of Li benzoate as the Li salt; methyl amyl ketone, methyl 'Cellosolve' (RTM) or its acetate, cyclohexanone, DMF, DMSO, isopropanol or dioxane as the solvent of (B); and an epoxy, polyvinyl acetal, phenol-formaldehyde, polyurethane or polyester resin as the resin of (B) is claimed. The compsn. is useful for treating exposed diazo sensitised lithographic printing plates. It provides an extended pressure life (improvement of 200%, compared with the use of (A) alone).

    18.
    发明专利
    未知

    公开(公告)号：DE2903270A1

    公开(公告)日：1979-08-23

    申请号：DE2903270

    申请日：1979-01-29

    Applicant: POLYCHROME CORP

    Inventor： GOLDA EUGENE ,  WILKES ALAN

    IPC: G03F7/038 ,  C08G59/00 ,  G03F7/021 ,  G03F7/02

    Abstract: NEGATIVE WORKING LITHOGRAPHIC PRINTING PLATES WHOSE COATING COMPRISES THE ADMIXTURE OF ACRYLATED ESTERS OF EPOXY RESINS WITH NEGATIVE WORKING LITHOGRAPHIC SENSITIZERS ARE FORMED, WHEREBY THE NON-IMAGE AREAS ARE REMOVABLE BY AQUEOUS ALKALI DEVELOPERS.

    20.
    发明专利
    未知

    公开(公告)号：DE2810308A1

    公开(公告)日：1978-10-26

    申请号：DE2810308

    申请日：1978-03-09

    Applicant: POLYCHROME CORP

    Inventor： GOLDA EUGENE ,  HUANG JEN-CHI ,  SHIMAZU KEN-ICHI ,  CHU SIMON LONG

    IPC: B41N3/00 ,  B41N3/03 ,  B41N3/08 ,  C25F3/04

    Abstract: A method for electrolytically graining the surface of aluminum sheets useful in the production of lithographic printing plates which comprises subjecting said aluminum sheets to the action of alternating electric current in an aqueous electrolytic solution containing, in combination, small but effective amounts of both hydrochloric and nitric acids.

Patent Agency Ranking