Cleaner for lithographic printing plates free of aromatic hydroc

Details Cleaner for lithographic printing plates free of aromatic hydroc Cleaner for lithographic printing plates free of aromatic hydroc

1989-10-06

1991-03-05

Lieberman, Paul

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252162, 25217421, 25217425, 134 40, 134 42, C09D 904, C11D 750

Patent

active

049975889

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 the 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 et al.
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 et al.
patent: 4576743 (1986-03-01), Kita et al.

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