Cleaner for lithographic printing plates

Details Cleaner for lithographic printing plates Cleaner for lithographic printing plates

1989-02-14

1989-12-12

Pal, Asok

Cleaning and liquid contact with solids

Processes

Miscellaneous

101451, 101465, 101424, 134 40, 25217422, B08B 308

Patent

active

048865532

ABSTRACT:
The invention provides a cleaner for lithographic printing plates free of aromatic hydrocarbons consisting essentially of from about 3.0% to about 35.0% of a solvent component which is selected from the group consisting of ethoxylates and propoxylates of C.sub.1 to C.sub.4 alcohols; and from about 0.5% to about 7.0% sodium metasilicate; and from about 0.25% to about 6.0% of a non-ionic surfactant selected from the group consisting of polyoxy aryl ethers having a hydrophile-lipophile balance in the range of from about 10.5 to about 11.5; and from about 52.0% to about 96.25% water, wherein said percentages are by weight of the cleaner.

REFERENCES:
patent: 3394653 (1968-07-01), Riesberg
patent: 3877372 (1975-04-01), Leeds
patent: 3882038 (1975-05-01), Clayton
patent: 3887497 (1975-06-01), Ulvild
patent: 4028281 (1977-06-01), Millard et al.
patent: 4504406 (1985-03-01), Dhillon
patent: 4560410 (1985-12-01), Burns
patent: 4576743 (1986-03-01), Kita

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