Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2009-07-15
2010-11-16
Pezzuto, Helen L. (Department: 1796)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C427S385500, C427S389900, C427S393000, C428S378000, C428S394000, C428S395000, C428S500000, C428S511000, C428S537100, C428S688000
Reexamination Certificate
active
07833585
ABSTRACT:
A hyperbranched polymer having pendent olefinic groups and comprising polymer units derived from one or more terminally-unsaturated, acyclic aliphatic diene and polymer units derived from maleic anhydride. Optionally, the hyperbranched polymer may further comprise polymer units derived from one or more 1-alkenes and/or a chain transfer agent. A process to prepare the hyperbranched polymer comprises contacting maleic anhydride with at least one terminally unsaturated acyclic aliphatic diene having at least 7 carbon atoms in the presence of an effective amount of a radical initiator in an aprotic solvent under dilute conditions.
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Cotts Patricia Metzger
Jacobson Stephen Ernest
E.I. du Pont de Nemours and Company
Pezzuto Helen L.
Sanchez Kathryn M.
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