Thermally Reversible Crosslinked Polyurethane
OwnerUmit G. Makal, Roger W. Day +2inventors
InventorsUmit G. Makal, Roger W. Day, David M. Haddleton, Christopher J. Summers
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OwnerUmit G. Makal, Roger W. Day +2inventors
InventorsUmit G. Makal, Roger W. Day, David M. Haddleton, Christopher J. Summers
Estimating the term…
The polymer compositions described herein include the reaction product obtained from a mixture that includes: (i) a hydroxyl terminated intermediate containing at least one furan functional group; and (ii) a polyisocyanate component. The polymer compositions may further include a polymaleimide compound which may be (a) added as a component of the polymer composition, (b) incorporated into the structure of the hydroxyl terminated intermediate containing at least one furan functional group, or (c) both. The resulting polymer composition is capable of thermally reversible crosslinking. Also described are processes for making such polymer compositions, methods of reversibly increasing and/or decreasing the amount of crosslinking in a polymer composition thermally, through utilization of the Diels-Alder cycloaddition mechanism between furan functional groups and the polymaleimide compound, and methods of using the described furan functional group containing materials to prepare polymer compositions capable of thermally reversible crosslinking.
A polymer composition comprising the reaction product obtained from a reaction mixture comprising:
A process of making a polymer composition capable of thermally reversible crosslinking, said process comprising the steps of:
A method of using a hydroxyl terminated intermediate containing at least one furan functional group to prepare a polymer composition capable of thermally reversible crosslinking, said method of use comprising the steps of:
Dependencies are inferred from the claim text.