Alkyl aryl ketone/formaldehyde resin having high softening point
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United States of America Patent
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-
Mar 15, 1988
Grant Date -
N/A
app pub date -
Jul 6, 1984
filing date -
Jul 6, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Condensation resins obtained by the polycondensation of alkyl aryl ketones and formaldehyde, wherein the polycondensation mixture contains 0.05 to 5% by weight, based on the alkyl aryl ketone, of an activator having the formula (A) ##STR1## wherein X is a nitrogen or phosphorus atom; R.sub.1, R.sub.2 and R.sub.3 are each independently a C.sub.1-3 -alkyl group or a phenyl group; and Y.sup.- is the anion of an inorganic or organic acid, have higher softening points than resins prepared by analogous processes but without the activator.
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