Aerosol corrosion inhibitors

• US 4,597,895 A
• Filed: 12/06/1984
• Issued: 07/01/1986
• Est. Priority Date: 12/06/1984
• Status: Expired due to Term

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Bartlett, Philip L.
• Primary Examiner(s): Terapane, John F.
• Assistant Examiner(s): Thexton, Matthew A.
• Application Number:
  US06/678,882
• Time in Patent Office: 572 Days
• Field of Search: 252/305, 252/392, 252/394, 424/45, 424/47, 424/126
• US Class Current: 252/392
• CPC Class Codes: C09K 3/30 for aerosols aerosol containers B65D83/14
• CPC Class Codes: C23F 11/14 Nitrogen-containing compounds
• CPC Class Codes: Y10S 424/01 Aerosol hair preparation
• CPC Class Codes: Y10S 424/02 Resin hair settings

Abstract

Corrosion inhibitor compositions comprising a mixture of a nitroalkane containing 1-3 carbon atoms and a cocoamide of diethanolamine. Such compositions are useful in inhibiting corrosion on the interior surfaces of tin-plated aerosol cans containing water-based aerosol formulations.

Claims

1. In an aerosol composition containing an aqueous aerosol-dispersible media and a propellant, the improvement which comprises the presence of a corrosion inhibiting composition comprising 15 wt. % to 85 wt. % of nitroalkane containing 1-3 carbon atoms and 85 wt. % to 15 wt. % of cocoamide of diethanolamine wherein the mole ratio of the diethanolamine to coconut fatty acid is 1:

1 to 2;

1, said corrosion inhibiting composition being present in an amount sufficient to prevent more than light corrosion of a tin-plated steel aerosol can containing said aerosol composition.

2. The composition of claim 1 in which the nitroalkane is nitromethane and the mole ratio of diethanolamine to coconut fatty acid in the cocoamide is 1:

1.

3. The composition of claim 1 in which the nitroalkane is nitromethane and the mole ratio of diethanolamine to coconut fatty acid in the cocoamide is 2:

1.

4. The composition of claim 1 comprising 40 wt. % to 60 wt. % nitroalkane and 60 wt. % to 40 wt. % cocoamide of diethanolamine.

5. The composition of claim 4 in which the nitroalkane is nitromethane.

6. In an aerosol propellant for use in a water-based aerosol composition, the improvement which comprises the presence of a corrosion inhibitor composition comprising 15 wt. % to 85 wt. % of nitroalkane containing 1-3 carbon atoms and 85 wt. % to 15 wt. % of cocoamide of diethanolamine wherein the mole ratio of the diethanolamine to coconut fatty acid is 1:

1 to 2;

1, said corrosion inhibiting composition being present in an amount sufficient to prevent more than light corrosion of a tin-plated steel aerosol can containing said aerosol composition.