Adsorbent matrix as propellant in aerosol package

Patent metadata

Field	Value
Publication number	US-11377293-B2
Application number	US-201916601616-A
Country	US
Kind code	B2
Filing date	Oct 15, 2019
Priority date	Nov 12, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

Adsorbent materials adsorb large quantities of inert permanent gases and maintain the initial pressure inside aerosol packages throughout the useful life of the packages, thus acting as propellants.

First claim

What is claimed is:

1. A method for generating constant pressure inside an aerosol package comprising the use of an adsorbent material and an inert permanent gas; wherein said inert permanent gas is adsorbed into said adsorbent material to form an adsorbent matrix; wherein said adsorbent matrix has an uptake constant K greater than about 0.015 g/g·psig at about 100 psig; wherein said adsorbent matrix generates a pressure inside said aerosol package; and wherein said pressure remains constant throughout the useful life of said aerosol package.

2. The method of claim 1 , wherein said uptake constant K is greater than about 0.02 g/g·psig at about 100 psig.

3. The method of claim 1 , wherein said uptake constant K is greater than about 0.04 g/g·psig at about 100 psig.

4. The method of claim 1 , wherein said uptake constant K is greater than about 0.08 g/g·psig at about 100 psig.

5. The method of claim 1 , wherein said adsorbent material is selected from the group comprising metal organic framework (MOF), covalent organic framework (COF), zeolitic imidazolate framework (ZIF), or mixtures thereof.

6. The method of claim 1 , wherein said adsorbent material comprises an MOF.

Assignees

• Procter & Gamble

Inventors

• Collias Dimitris Ioannis

Classifications

• B65D83/141

  specially adapted for specific contents or propellants · CPC title

• B65D83/673 Primary

  at least a portion of the propellant being separated from the product and incrementally released by means of a pressure regulator · CPC title

• B01J20/226

  Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF] (preparation of metal complexes containing carboxylic acid moieties C07C51/418; MOF's per se C07F) · CPC title

• C09K3/30

  for aerosols (aerosol containers B65D83/14) · CPC title

• B65D83/62

  by membranes, bags or the like · CPC title