Anhydride-functional polymers comprising ene reaction products of unsaturated anhydrides and polyolefins
AssigneeThe Sherwin-Williams Company
InventorsMohamad D. Shalati, Rodney M. Harris, Joyce A. Bibeau, Richard S. Valpey, III
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Abstract
An anhydride-functional polymer is obtained by reacting under ene reaction conditions: (i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and (ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
Claims12
An anhydride-functional polymer obtained by reacting under ene reaction conditions a mixture of reactants comprising:
- (i) 20 to 70 percent by weight of an unsaturated anhydride having the structure:
- ##STR7## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen;
- and
- (ii) 30 to 80 percent by weight of at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
A process for preparing an anhydride-functional polymer which process comprises admixing under ene reaction conditions:
- (i) 20 to 70 percent by weight of an unsaturated anhydride having the structure:
- ##STR8## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen;
- and
- (ii) 30 to 80 percent by weight of at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
Dependencies are inferred from the claim text.