GB1215437A - Lacquer emulsion for lithographic plates and method for their manufacture - Google Patents
Lacquer emulsion for lithographic plates and method for their manufactureInfo
- Publication number
- GB1215437A GB1215437A GB1318869A GB1318869A GB1215437A GB 1215437 A GB1215437 A GB 1215437A GB 1318869 A GB1318869 A GB 1318869A GB 1318869 A GB1318869 A GB 1318869A GB 1215437 A GB1215437 A GB 1215437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aqueous phase
- water
- resin
- solvent
- lithographic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
1,215,437. Preparing lithographic plates. LITHOPLATE, Inc. March 13, 1969, No.13188/69. Heading G2M. [Also in Division C3] A lacquer emulsion for treating exposed lithographic plates, comprising a two-phase liquid emulsion including in combination (1) an aqueous phase containing a densensitizer for removing unexposed areas from said plate, and (2) a non-aqueous phase comprising as the major ingredients (a) an essentially water-insoluble solvent having a solubility of no more than 2À4 grams per 100 ml of water at room temperature and (b) a water-insoluble oleophilic resin dissolved in said solvent, said resin being of the type resistant to lithographic fountain solutions. lithographic inks, weak acids, alcohols, aliphatic hydrocarbons, and drying oils and having water absorption less than 5%, said resin having when dry, a Rockwell hardness of M-50 to M-100, an impact strength of one to twenty foot pounds per inch of notch, flexural strength between 1000 and 23,000 p.s.i., and tensile strength of 1000 to 13,000 p.s.i., Said non-aqueous phase being dispersed in said aqueous phase with the particle size of the resin particles being between one and five hundred microns. The densensitizer is a hydrophilic colloid e.g. gum arabic and/or carboxymethyl cellulose and an acid desensitizing agent. The aqueous phase preferably contains a solid thickener, e.g. silica. Specified resins are acrylic ester copolymers, polyvinyl formal, vinyl chlorideacetate, vinylidene chloride-acylonitrile, polycarbonates, polystyrene, polyester, polyurethane, silicones, cellulose acetate and bisphenol A- epichlorhydrin condensates, commercial products being employed in the Examples. There are dissolved preferably in cyclohexanone. Optional additives are colourants, non-ionic surfactant and a water-miseible solvent which slows down evaporation of the organic resin solvent, particularly carbitol acetate and isophorone. The lacquers can be used on plates using diazo or cinnamate light-sensitive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1318869A GB1215437A (en) | 1969-03-13 | 1969-03-13 | Lacquer emulsion for lithographic plates and method for their manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1318869A GB1215437A (en) | 1969-03-13 | 1969-03-13 | Lacquer emulsion for lithographic plates and method for their manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1215437A true GB1215437A (en) | 1970-12-09 |
Family
ID=10018455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1318869A Expired GB1215437A (en) | 1969-03-13 | 1969-03-13 | Lacquer emulsion for lithographic plates and method for their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1215437A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0434594A2 (en) * | 1989-11-21 | 1991-06-26 | Plazer Ltd. | Method and materials for producing a printing master |
| US8247163B2 (en) | 2009-06-12 | 2012-08-21 | Eastman Kodak Company | Preparing lithographic printing plates with enhanced contrast |
| WO2013119561A1 (en) * | 2012-02-08 | 2013-08-15 | Dow Corning Corporation | Silicone resin emulsions |
| US8637223B2 (en) | 2011-02-28 | 2014-01-28 | Eastman Kodak Company | Preparation of lithographic printing plates |
-
1969
- 1969-03-13 GB GB1318869A patent/GB1215437A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0434594A2 (en) * | 1989-11-21 | 1991-06-26 | Plazer Ltd. | Method and materials for producing a printing master |
| EP0434594A3 (en) * | 1989-11-21 | 1991-08-28 | Bir Shel Ltd. | Method and materials for producing a printing master |
| US5212030A (en) * | 1989-11-21 | 1993-05-18 | Plazer Ltd. | Method and materials for producing a printing master |
| US8247163B2 (en) | 2009-06-12 | 2012-08-21 | Eastman Kodak Company | Preparing lithographic printing plates with enhanced contrast |
| US8637223B2 (en) | 2011-02-28 | 2014-01-28 | Eastman Kodak Company | Preparation of lithographic printing plates |
| WO2013119561A1 (en) * | 2012-02-08 | 2013-08-15 | Dow Corning Corporation | Silicone resin emulsions |
| CN104136547A (en) * | 2012-02-08 | 2014-11-05 | 道康宁公司 | Silicone resin emulsions |
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