Process for preparation of water borne curing agents
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United States of America Patent
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Jan 6, 1998
Grant Date -
N/A
app pub date -
Sep 5, 1996
filing date -
Sep 5, 1996
priority date (Note) -
Expired
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Abstract
A novel process for preparing poly(2-isopropenyl-2-oxazoline or oxazine) and its methyl methacrylate copolymer, which are useful as water borne curing agents, particularly in the non-stick coating industry. The process converts commercially available poly(methyl methacrylate) into poly(2-isopropenyl-2-oxazoline or oxazine) polymers or copolymers with methyl methacrylate, while circumventing the use of the highly toxic monomer, 2-isopropenyl-2-oxazoline or oxazine. The process involves converting a poly(methacrylic ester) to the corresponding poly(.beta.-hydroxy-N-ethyl or propyl methacrylamide) and activating the ring-forming .beta.-hydroxy-N-ethyl or propyl methacrylamide moiety to form an oxazoline or oxazine ring.
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