Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1990-10-23
1992-01-14
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
540471, 540479, 544 71, 544 96, 544 72, 548216, 548225, C08F12606
Patent
active
050811975
ABSTRACT:
This invention provides novel azlactone-functional oligomers of 2-alkenyl azlactones in which oligomerization has occurred predominantly via the 2-alkenyl group. Oligomerization of the 2-alkenyl group provides oligomers having 2 to 15 mer units with predominantly carbon-carbon backbone segments. Oligomerized in this fashion, the novel compositions possess azlactone groups which can be reacted with nucleophiles in the normal ring-opening sense. The oligomers are prepared by a novel process in which both Lewis and Bronsted acidic catalysts are effective. The reactive oligomers find utility as crosslinking agents for polymers containing azlactone-reactable nucleophilic groups.
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Heilmann Steven M.
Krepski Larry R.
Moren Dean M.
Pathre Sadanand V.
Rasmussen Jerald K.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Nagumo M.
Schofer Joseph L.
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