Cross-linked polymeric nanoparticles and metal nanoparticles...

Details Cross-linked polymeric nanoparticles and metal nanoparticles... Cross-linked polymeric nanoparticles and metal nanoparticles...

2007-03-13

2007-03-13

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C075S345000, C075S363000, C075S370000, C525S329100, C525S329400, C525S329900, C525S330900, C977S776000, C977S777000

Reexamination Certificate

active

10275978

ABSTRACT:
There are provided internally cross-linked, stable polymeric materials, in the form of substantially spherical particles, each particle consisting essentially of a single macromolecule. They have the unusual property of being soluble or dispersible in a liquid medium without significantly increasing the viscosity of the medium, rendering them potentially useful in imaging applications such as ink jet printers. They can be prepared by dissolving polymeric material in a solvent system to form a solution of the polymeric material at a concentration therein of less than the critical concentration for the polymer, causing the polymeric material to contract into an approximately spheroidal conformation in solution, cross-linking the polymeric material in solution in said spheroidal conformation so assumed, and recovering stable, cross-linked approximately spheroidal polymeric particles from the solution.

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