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US 11,225,553 B1Granted
Amine-substituted pyrrolidine-2,5-dionyl copolymers, polyimides, articles, and methods
AssigneeEssex Furukawa Magnet Wire USA LLC
InventorScott Jolley
Life of this patent
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Abstract
Amine-substituted copolymers that may include an amine-substituted pyrrolidine-2,5-dione moiety. Polyamic acids and polyimides, which may be formed by contacting an amine substituted copolymer with a dianhydride, or a dianhydride and a diamine. Articles, such as wires, having a surface on which a polyimide is disposed. Methods for forming polymers.
Claims20
A copolymer comprising monomers according to formula (I), formula (II), formula (III), or formula (IV):
- wherein—
- R1 and R6, independently, are a C1-C30 hydrocarbyl;
- Ra, Rb, Rc, R2, R3, R4, and R5, independently, are selected from the group consisting of hydrogen and a C1-C30 hydrocarbyl;
- m and n, independently, are integers from 1 to 10,000;
- and
- p is 0 or 1.
3 more elements
A polyimide of formula (V), formula (VI), formula (VII), or formula (VIII):
- wherein—
- R1, R6, and R8, independently, are a C1-C30 hydrocarbyl;
- Ra, Rb, Rc, R2, R3, R4, and R5, independently, are selected from the group consisting of hydrogen and a C1-C30 hydrocarbyl;
- R7 is a monocyclic or polycyclic C1-C30 hydrocarbyl;
- m and n, independently, are integers from 1 to 10,000;
- p is 0 or 1;
- and
- q is selected from the group consisting of 0 and an integer from 1 to 10,000.
5 more elements
A method of forming a polyimide, the method comprising:
- providing a polymer comprising a first monomer, the first monomer comprising a 1-(amino-C1-C30 hydrocarbyl)pyrrolidinyl-2,5-dione moiety;
- contacting the polymer and (i) a dianhydride, or (ii) a dianhydride and a diamine to form a polyamic acid;
- and
- heating the polyamic acid at a temperature effective to form the polyimide.
1 more element
Dependencies are inferred from the claim text.