# US 5,348,731 A · Aerosol spray steel can dispensers with corrosion inhibitors

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- Number: US 5,348,731 A
- Document ID: US5348731A
- Status: Granted
- Kind: A
- Application number: 08/064,612
- Filed: 1993-05-19
- Granted: 1994-09-20
- Earliest claimed: 1993-05-19
- Assignees: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
- Inventors: Anthony L. Patti; Susan K. Hentrich; Joseph R. Faryniarz
- Web page: https://patentgrep.com/patent/US5348731A

## CPC

- A61K 8/368: with carboxyl groups directly bound to carbon atoms of aromatic rings
- A61K 9/12: Aerosols; Foams {(A61K9/0043, A61K9/0056, A61K9/006, A61K9/0073 take precedence; spray-films A61K9/7015)}
- A61Q 5/06: Preparations for styling the hair, e.g. by temporary shaping or colouring
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- C23F 11/124: {Carboxylic acids}
- A61K 2800/526: Corrosion inhibitors
- Y10S 424/01: Aerosol hair preparation
- Y10S 424/02: Resin hair settings
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- C23F: NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE (working metal by laser beams B23K26/00; desurfacing by applying flames B23K7/00; working of metal by electro-erosion B23H; producing decorative effects by removing surface material, e.g. by engraving, by etching, B44C1/22; electrolytic etching or polishing C25F); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An aerosol composition packaged in a steel can is described. The composition includes water, a propellant and as a corrosion inhibitor, a small amount of ammonium benzoate. The corrosion inhibitor can further be supplemented with ammonium hydroxide.

## Claims

### Claim 1

An aerosol composition packaged in a steel can comprising:
(i) from about 0.01 to about 99% water;
(ii) from about 1 to about 60% propellant; and
(iii) from about 0.1 to about 5% of a corrosion inhibitor which is a combination of ammonium benzoate and ammonium hydroxide in molar ratio from about 10:1 to about 1:10.

### Claim 2 (depends on 1)

A composition according to claim 1 which is a hairspray and further includes from about 0.1 to about 20% by weight of a film-forming polymeric resin.

### Claim 3 (depends on 2)

A composition according to claim 2 wherein the film-forming polymeric resin is constituted from a monomer selected from the group consisting of vinylacetate, crotonic acid, vinyl neodecanoate, methyl vinyl ether, acrylic acid and C.sub.1 -C.sub.20 esters thereof, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-butyl acrylate, t-butyl acrylate, acrylamide, methacrylamide, t-butyl amino ethyl methacrylate, N-vinyl pyrrolidone and combinations thereof.

### Claim 4 (depends on 2)

A composition according to claim 2 wherein the film-forming polymeric resin is a polyester or polyesteramide.

### Claim 5 (depends on 2)

A composition according to claim 2 wherein the film-forming polymeric resin is selected from the group consisting of polyvinylpyrrolidone, polyvinylacetate, octylacrylamide/acrylates/butyl amino ethyl methacrylate copolymer, vinyl acetate/crotonic acid/vinyl neodecanoate, acrylate/acrylamide copolymer, isophthalic acid/sulfoisophthalic acid/diethylene glycol polyester and combinations thereof.

### Claim 6 (depends on 1)

A composition according to claim 1 wherein the molar ratio ranges from about 2:1 to about 1:2.

### Claim 7 (depends on 1)

A composition according to claim 1 further comprising a C.sub.1 -C.sub.4 alcohol present in an amount from about 1 to about 80% by weight.

### Claim 8 (depends on 1)

A composition according to claim 1 further comprising from about 0.001 to about 10% by weight of a neutralizing agent which is an amino alcohol.

### Claim 9 (depends on 1)

A composition according to claim 1 wherein the molar ratio is about 1:1.

### Claim 10

A method for inhibiting corrosion of steel cans that store aerosol compositions comprising from about 0.01 to about 99% water and from about 1 to about 60% propellant, said method comprising adding from about 0.1 to about 5% of a corrosion inhibitor combination of ammonium benzoate and ammonium hydroxide in a molar ratio from about 10:1 to about 1:10.

### Claim 11 (depends on 10)

A method according to claim 10 wherein the molar ratio ranges from about 2:1 to about 1:2.

### Claim 12 (depends on 11)

A method according to claim 11 wherein the molar ratio is about 1:1.