Micron-size polymer particles comprising polyamide compound, production and uses thereof
US7393585B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2003 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Oct 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31732
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter in the range of about 1 micron to about 1000 microns, and wherein at least some of the plurality of particles are substantially transparent. In addition, a plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter of less than about 4 microns. Methods of forming a plurality of micron-size solid particles are also described that include a) introducing at least one amide-based compound having a melting point, at least one suspending agent and at least one surfactant into a reaction vessel to form a reaction mixture; b) applying a thermal energy to the reaction mixture, wherein the thermal energy comprises a temperature that is at or above the melting point of the at least one amide-based compound; c) polymerizing the at least one amide-based compound in the reaction mixture; d) cooling the reaction mixture; and e) rinsing the reaction mixture to retrieve the polymer particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.