High solids HBN slurry, HBN paste, spherical HBN powder, and methods of making and using them
USRE45803E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Aug 17, 2029 |
Classification
- Technology area (CPC —)General
Abstract
The present invention relates to a method for making a hexagonal boron nitride slurry and the resulting slurry. The method involves mixing from about 0.5 wt. % to about 5 wt. % surfactant with about 30 wt. % to about 50 wt. % hexagonal boron nitride powder in a medium under conditions effective to produce a hexagonal boron nitride slurry. The present invention also relates to a method for making a spherical boron nitride powder and a method for making a hexagonal boron nitride paste using a hexagonal boron nitride slurry. Another aspect of the present invention relates to a hexagonal boron nitride paste including from about 60 wt. % to about 80 wt. % solid hexagonal boron nitride. Yet another aspect of the present invention relates to a spherical boron nitride powder, a polymer blend including a polymer and the spherical hexagonal boron nitride powder, and a system including such a polymer blend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.