Surface modified hexagonal boron nitride particles
AssigneeE. I. Du Pont de Nemours and Company
InventorGovindasamy Paramasivam Rajendran
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Abstract
Provided is a composition comprising hexagonal boron nitride particles having a surface and a substituted phenyl radical bonded to the surface, the substituted phenyl radical being represented by the structure: where X is a radical selected from NH2—, HO—, R2OC(O)—, R2C(O)O—, HSO3—, NH2CO—, halogens, alkyl or aryl, including substituted aryl; where R1 is hydrogen, alkyl or alkoxy, and R2 is hydrogen, alkyl or aryl, including substituted aryl. A process for preparing the composition is also provided.
Claims10
A composition comprising hexagonal boron nitride particles having a surface and a substituted phenyl radical bonded to the surface, the substituted phenyl radical being represented by the structure:
- wherein X is a radical selected from NH2—, HO—, R2OC(O)—, R2C(O)O—, HSO3—, NH2CO—, halogens, alkyl and substituted or unsubstituted aryl;
- R1 is hydrogen, alkyl or alkoxy, and R2 is hydrogen, alkyl or substituted or unsubstituted aryl.
A process comprising reacting particles of hexagonal boron nitride (hBN) with a substituted phenyl diazonium chloride in an alcohol/water solution in the presence of metallic iron and HCl to form a reaction product, and recovering the reaction product;
- wherein the alcohol/water solution has a water concentration of at least 50% by volume;
- and wherein the substituted phenyl diazonium chloride is represented by the formula
- wherein X is a radical selected from NH2—, HO—, R2OC(O)—, HSO3—, NH2CO—, halogens, alkyl, and substituted or unsubstituted aryl;
- R1 is alkyl or alkoxy, and R2 is hydrogen, alkyl, or substituted or unsubstituted aryl.
Dependencies are inferred from the claim text.