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GB1013945A - Aqueous etch composition - Google Patents

Aqueous etch composition

Info

Publication number
GB1013945A
GB1013945A GB30858/65A GB3085865A GB1013945A GB 1013945 A GB1013945 A GB 1013945A GB 30858/65 A GB30858/65 A GB 30858/65A GB 3085865 A GB3085865 A GB 3085865A GB 1013945 A GB1013945 A GB 1013945A
Authority
GB
United Kingdom
Prior art keywords
gum
acid
anionic
colloidal
polyelectrolyte
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
Application number
GB30858/65A
Inventor
Kenneth Bricknell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AB Dick Co
Original Assignee
AB Dick Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AB Dick Co filed Critical AB Dick Co
Publication of GB1013945A publication Critical patent/GB1013945A/en
Expired legal-status Critical Current

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)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

An aqueous etch composition for paper base planographic printing masters comprises an anionic macromolecular colloidal polyelectrolyte containing a high proportion of dissociable anionic groupgs having a pH of at least 5 but less than 7, containing a humectant and an inert inorganic colloid. The humectant may be glycerol, diethylene or triethylene glycol, sorbitol or mannitol and the inert inorganic colloidal material may be colloidal silica, stannic acid, metasilicic acid on fluorosilicic acid which may be in the form of an alkali metal or ammonium salt. The polyelectrolyte may be a naturally occurring gum or polysaccharide or a carboxymethyl derivative thereof, e.g. gum arabic, gum tragacanth, gum karaya, pectin, guar gum and alginic acid and its salts may be used. In addition polymers of acrylic acid of the general formula CH2=CR.COOH, where R is a hydrogen or halogen atom or an alkyl group having 1 to 4 carbon atoms, or a salt of said polymer, may also be present. In the examples sodium alginate powder, gum tragacanth and gum guar are the polyelectrolytes used when the acrylic polymers are not employed.ALSO:An aqueous etch composition for paper base planographic printing masters comprises an anionic macromolecular colloidal polyelectrolyte containing a high proportion of dissociable anionic groups having a pH of at least 5 but less than 7, containing a humectant and an inert organic colloid. Suitable humectants and inert inorganic colloids are as listed in Specification 1,013,944. The anionic colloidal polyelectrolyte may be a polymer of acrylic acid of the general formula CH2=CR.COOH where R is a hydrogen or a halogen atom or an alkyl group having 1 to 4 carbon atoms, or a salt of said polymer as in Specification 1,013,944. In place of or in addition to said acrylic polymers a naturally occurring gum or polysaccharide or a carboxymethyl derivative thereof may be used, e.g. gum arabic, gum tragacanth, gum karaya, pectin, guar gum and alginic acid and its salts may be used.
GB30858/65A 1961-11-06 1961-11-06 Aqueous etch composition Expired GB1013945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39646/61A GB1013944A (en) 1961-11-06 1961-11-06 Improvements in or relating to planographic printing

Publications (1)

Publication Number Publication Date
GB1013945A true GB1013945A (en) 1965-12-22

Family

ID=10410687

Family Applications (2)

Application Number Title Priority Date Filing Date
GB39646/61A Expired GB1013944A (en) 1961-11-06 1961-11-06 Improvements in or relating to planographic printing
GB30858/65A Expired GB1013945A (en) 1961-11-06 1961-11-06 Aqueous etch composition

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB39646/61A Expired GB1013944A (en) 1961-11-06 1961-11-06 Improvements in or relating to planographic printing

Country Status (6)

Country Link
US (1) US3250214A (en)
BE (1) BE624440A (en)
CH (1) CH439350A (en)
DE (1) DE1421452A1 (en)
GB (2) GB1013944A (en)
NL (1) NL285136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828891A1 (en) * 1977-06-30 1979-01-18 Fuji Photo Film Co Ltd DESENSITIZER FOR LITHOGRAPHIC PRINTING PLATES AND PROCESS FOR MANUFACTURING LITHOGRAPHIC PRINTING PLATES

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527741A (en) * 1983-06-13 1985-07-09 The Afa Corporation Trigger pump sprayer
JP5553421B2 (en) * 2011-08-01 2014-07-16 株式会社ルネッサンス・エナジー・リサーチ CO2-facilitated transport membrane and method for producing the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534650A (en) * 1947-05-09 1950-12-19 Warren S D Co Planographic printing plate and method of making same
US2589313A (en) * 1944-06-21 1952-03-18 Harris Seybold Potter Co Treating lithographic plates
BE529582A (en) * 1945-03-08
NL120975C (en) * 1958-07-25
NL279066A (en) * 1958-12-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828891A1 (en) * 1977-06-30 1979-01-18 Fuji Photo Film Co Ltd DESENSITIZER FOR LITHOGRAPHIC PRINTING PLATES AND PROCESS FOR MANUFACTURING LITHOGRAPHIC PRINTING PLATES

Also Published As

Publication number Publication date
CH439350A (en) 1967-07-15
NL285136A (en)
DE1421452A1 (en) 1968-10-10
US3250214A (en) 1966-05-10
BE624440A (en)
GB1013944A (en) 1965-12-22

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