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US 2026/0297260 A1Published application
Polyimides: compositions, methods of making, and parts made therefrom
AssigneeDupont Specialty Products USA, LLC
InventorsDarin PETERSON, Christopher Scott STENTA, Vivek KAPUR
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Abstract
A polyimide composition comprising particles of a polyimide polymer derived from (i) ODA, (ii) PMDA, (iii) PPD, and (iv) BPDA monomers, wherein, when the polyimide composition consists of the particles of the polyimide polymer, the polyimide composition has an apparent density of ≤0.25 grams per cubic centimeter.
Claims10
A polyimide composition, comprising:
- particles of a polyimide polymer derived from (i) ODA, (ii) PMDA, (iii) PPD, and (iv) BPDA monomers,
- wherein, when the polyimide composition consists of the particles of the polyimide polymer, the polyimide composition has an apparent density of ≤0.25 grams per cubic centimeter.
A method of making a polyimide composition, comprising:
- combining (i) ODA, (ii) PMDA, (iii) PPD, (iv) BPDA and (v) a solvent for a time and at conditions sufficient to form a reaction product comprising a polyamide and solvent;
- heating the reaction product at a temperature and time sufficient to remove water and to form particles of a polyimide;
- filtering and washing the formed particles of polyimide;
- drying the washed polyimide particles to form the polyimide composition, wherein the polyimide composition comprises the particles of polyimide;
- wherein when the polyimide composition consists of the particles of the polyimide polymer, the polyimide composition has an apparent density of ≤0.25 grams per cubic centimeter.
2 more elements
Dependencies are inferred from the claim text.