Phenolic functionalized polyimides and compositions thereof
AssigneeDesigner Molecules, Inc.
InventorsFarhad G Mizori, Eunsook Chae Barber
Life of this patent
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Abstract
Phenolic-terminated and phenolic pendent curable polyimides with very good dielectric properties have been prepared. These materials in combination with epoxy resins and other co-curable resins are ideal for being transformed into flexible films that are ready to be laminated for example between copper foils for applications such as copper-clad laminates for a variety of electronics applications.
Claims21
1-69. (canceled)
A composition comprising a the phenolic-functionalized polyimide having a structure according to Formula I, II or III:
- wherein:
- R is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- Q is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- A is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- and
- n and m are each independently 0 or an integer having the value from 1-100 or an integer having the value 20-100;
- with the proviso that the average molecular weight of the polyimide is greater than 20,000 Daltons or is 25,000 to 50,000 Daltons;
- and
- optionally comprising anisole.
A method for synthesizing a phenolic-functionalized compound having a structure according to Formula I, II or III:
- wherein:
- R is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- Q is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- A is a moiety independently selected from the group consisting of:
- substituted or unsubstituted aromatic, heteroaromatic aliphatic, cycloaliphatic, alkenyl, polyether, polyester, polyamide, and siloxane;
- and n and m are each independently 0 or an integer having the value from 1-100;
- with the proviso that the average molecular weight of the polyimide is greater than 20,000 Daltons;
- comprising the steps of
- a. providing at least one diamine and at least one dianhydride;
- b. combining the at least one diamine with the at least one dianhydride in a solvent to form a mixture, wherein the solvent is optionally anisole;
- c. refluxing the mixture, thereby forming a polyamic acid in the solution;
- and
- d. azeotropically distilling the polyamic acid in the solution;
- thereby forming an amine-terminated polyimide in the solution;
- wherein either:
- i. the at least one diamine comprises a phenol functionality;
- ii. the at least one dianhydride comprises a phenol functionality;
- or
- iii. further comprising the step of functionalizing the amine-terminated polyimide by reacting the terminal amine groups to form a phenol functional terminal moiety.
- thereby synthesizing the phenol-functionalized compound.
Dependencies are inferred from the claim text.