Multi-component particles comprising inorganic nanoparticles distributed in an organic matrix and processes for making and using same

Patent metadata

Field	Value
Publication number	US-10428186-B2
Application number	US-201414285804-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	Aug 7, 2004
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

Multi-component particles comprising inorganic nanoparticles distributed in an organic matrix and processes for making and using same. A flowing aerosol is generated that includes droplets of a precursor medium dispersed in a gas phase. The precursor medium contains a liquid vehicle and at least one precursor. At least a portion of the liquid vehicle is removed from the droplets of precursor medium under conditions effective to convert the precursor to the nanoparticles or the matrix and form the multi-component particles.

First claim

What is claimed is:

1. A process for making multi-component particles comprising inorganic nanoparticles distributed in an organic matrix, the process comprising the steps of:
(a) generating an aerosol comprising droplets, wherein the droplets comprise a liquid vehicle, an inorganic nanoparticle precursor and an organic matrix precursor; and
(b) removing at least a portion of the liquid vehicle from the droplets under conditions effective to convert at least a portion of the organic matrix precursor to the organic matrix and to convert at least a portion of the inorganic nanoparticle precursor to the inorganic nanoparticles distributed in the organic matrix.

2. The process of claim 1 , wherein step (b) comprises heating the droplets to a maximum temperature of from about 50° C. to about 800° C. for a period of time of at least 1 second.

3. The process of claim 1 , wherein the droplets further comprise a reducing agent and wherein step (b) comprises reacting the reducing agent with the inorganic nanoparticle precursor to form the inorganic nanoparticles.

4. The process of claim 1 , wherein the liquid vehicle is a reducing agent and wherein step (b) comprises reacting the liquid vehicle with the inorganic nanoparticle precursor to form the inorganic nanoparticles.

5. The process of claim 1 , wherein the aerosol comprises the droplets distributed in a gas phase, the gas phase comprising a reducing agent, and wherein step (b) comprises reacting the reducing agent with the inorganic nanoparticle precursor to form the inorganic nanoparticles.

6. The process of claim 1 , wherein the aerosol comprises droplets, the droplets comprising the inorganic nanoparticle precursor and/ or a reducing agent.

7. The process of claim 1 , wherein the process further comprises the step of:
(c) collecting the multi-component particles in a liquid medium.

8. A process for making multi-component particles comprising inorganic nanoparticles dispersed in an organic matrix, the process comprising the steps of:
(a) generating an aerosol comprising droplets dispersed in a gas phase, wherein the droplets comprise a liquid vehicle, the inorganic nanoparticles and an organic matrix precursor; and
(b) removing at least a portion of the liquid vehicle from the droplets under conditions effective to convert at least a portion of the organic matrix precursor to the organic matrix and to disperse the inorganic nanoparticles within the matrix.

9. The process of claim 8 , wherein step (b) comprises heating the droplets to a maximum temperature of from about 50° C. to about 800° C. for a period of time of at least 1 second.

10. The process of claim 8 , wherein the droplets further comprise a reducing agent and wherein step (b) comprises reacting the reducing agent with the organic matrix precursor to form the matrix.

11. The process of claim 8 , wherein the liquid vehicle is a reducing agent and wherein step (b) comprises reacting the liquid vehicle with the organic matrix precursor to form the matrix.

12. The process of claim 8 , wherein the aerosol comprises the droplets distributed in a gas phase, the gas phase comprising a reducing agent, and wherein step (b) comprises reacting the reducing agent with the organic matrix precursor to form the matrix.

13. The process of claim 8 , wherein the process further comprises the step of:
(c) collecting the multi-component particles in a liquid medium.

14. The process of claim 13 , wherein the process further comprises the step of:
(d) quenching the multi-component particles within about 0.001 seconds of step (c).

15. A process for making multi-component particles comprising inorganic nanoparticles dispersed in an organic matrix, the process comprising the steps of:
(a) generating an aerosol comprising droplets dispersed in a gas phase, wherein the droplets comprise a liquid vehicle, an inorganic nanoparticle precursor and an organic matrix precursor;
(b) removing at least a portion of the liquid vehicle from the droplets;
(c) converting the organic matrix precursor to the organic matrix; and
(d) converting the inorganic nanoparticle precursor to the inorganic nanoparticles distributed within the organic matrix.

16. The process of claim 15 , wherein steps (b), (c) and (d) occur simultaneously.

17. The process of claim 15 , wherein step (b) occurs, at least in part, before steps (c) and (d).

18. The process of claim 15 , wherein step (c) occurs, at least in part, before step (d).

19. The process of claim 15 , wherein step (d) occurs, at least in part, before step (c).

Assignees

• Sicpa Holding Sa

Inventors

• Kodas Toivo T
• Hampden-Smith Mark J
• Haubrich Scott T
• Yu Heng
• Hardman Ned J
• Kornbrekke Ralph E
• Stump Aaron
• Kunze Klaus
• Dericotte David
• Vanheusden Karel

Classifications

• C08J2339/06

  Homopolymers or copolymers of N-vinyl-pyrrolidones · CPC title

• B01J13/0095

  Preparation of aerosols · CPC title

• B01J13/0043 Primary

  containing elemental metal (for medical or diagnostical purposes A61K, G01N) · CPC title

• C08J3/203 Primary

  Solid polymers with solid and/or liquid additives · CPC title