Water developable screen printing composition
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United States of America Patent
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Apr 18, 1989
Issued Date -
N/A
app pub date -
Jun 16, 1987
filing date -
Aug 2, 1985
priority date (Note) -
Expired
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Abstract
This invention relates to a composition for use in a screen printing screen. More particularly, this invention relates to a screen printing composition comprising (a) a binder resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## wherein said group I is present in component C from about 75% to about 85%; group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%; and wherein R is hydrogen or lower alkyl; and (b) a mixture of (1) a polyethoxylate diacrylated monomer; and (2) an oligomeric amine diacrylate; and (c) a photoinitiator.
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