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US 5,705,573 AGranted
Process for preparation of water borne curing agents
AssigneeMichigan Molecular Institute
InventorsDouglas R. Swanson, Donald A. Tomalia
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AssigneeMichigan Molecular Institute
InventorsDouglas R. Swanson, Donald A. Tomalia
Estimating the term…
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.
A method of forming an oxazoline-containing polymer or copolymer by converting a poly(methacrylic ester) at least in part to a first polymer or copolymer comprising the corresponding poly(.beta.--Y--N--(CH.sub.2).sub.x methacrylamide), and activating the .beta.--Y--(CH.sub.2).sub.x amide group to form an oxazoline or oxazine ring, where Y is a leaving group and x=2 or 3.
Dependencies are inferred from the claim text.