Automotive paint remover composition and method of making

Patent metadata

Field	Value
Publication number	US-12012572-B2
Application number	US-201816154032-A
Country	US
Kind code	B2
Filing date	Oct 8, 2018
Priority date	Oct 9, 2017
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A chemical composition and method of making and using are provided for paint removal and/or for adhesive removal. The chemical composition comprises THF and a solvent selected from the group consisting of methyl acetate, acetone, dimethyl carbonate, propylene carbonate, and 1-chloro-4 (trifluoromethyl) benzene, and a combination thereof.

First claim

What is claimed is:

1. A automotive paint removing composition comprising:
tetrahydrofuran (THF) that ranges from 33 wt % to 50 wt % of the total weight of the automotive paint removing composition,
a solvent that is acetone ranging from 21.75 wt % to 90 wt % the total weight of the automotive paint removing composition, and
an amine.

2. The automotive paint removing composition according to claim 1 , wherein the solvent is acetone and ranges from 36 wt % to 54 wt % the total weight of the automotive paint removing composition.

3. The automotive paint removing composition according to claim 1 , further comprising methyl acetate.

4. The automotive paint removing composition according to claim 1 , further comprising an additive selected from the group consisting of a thickener, a paraffin wax, a surfactant, dye, fumed silica, Butylated hydroxytoluene (BHT), anti-peroxide forming agents, methanol, and a combination thereof.

5. The automotive paint removing composition according to claim 1 , wherein the amine is selected from the group consisting of aqua ammonia, monoethanolamine, diethanolamine, triethanolamine, diglycolamine, and a combination thereof.

6. The automotive paint removing composition according to claim 1 , wherein the composition is in a form of a liquid or an aerosol.

7. A method of removing automotive paint comprising applying the composition of claim 1 to a painted automotive surface for a predetermined time period thereby removing paint from the painted automotive surface.

8. A method of removing an adhesive comprising applying the composition of claim 1 to a surface and removing the adhesive and the composition from the surface.

9. A chemical composition consisting essentially of:
33 weight percent to 50 weight percent of tetrahydrofuran (THF),
a solvent that is acetone ranging from 21.75 wt % to 90 wt % the total weight of the chemical composition,
optionally an ester,
0 weight percent to 2 weight percent of a thickener,
0.25 weight percent to 1 weight percent of a paraffin wax,
0.25 weight percent to 5 weight percent of a surfactant, and
0.01 weight percent to 5 weight percent of an amine,

wherein weight percentages are based on the total weight of the composition.

10. The chemical composition according to claim 9 , wherein the ester is selected from the group consisting of methyl acetate, ethyl acetate, butyl acetate, and a combination thereof.

11. The chemical composition according to claim 9 , wherein the thickener is a cellulose ether thickener.

12. The chemical composition according to claim 9 , wherein the amine is selected from the group consisting of an aqua ammonia, monoethanolamine, diethanolamine, triethanolamine, diglycolamine, and a combination thereof.

13. The chemical composition according to claim 9 , wherein the chemical composition is in a form of a liquid or an aerosol.

14. A method of removing paint comprising applying the composition of claim 9 to a painted surface for a predetermined time period thereby removing paint from the painted surface.

15. A method of removing an adhesive comprising applying the composition of claim 9 to a surface and removing the adhesive and the composition from the surface.

16. The automotive paint removing composition of claim 1 , wherein the amine is aqua ammonia present at up to 5 wt % of the total weight of the automotive paint removing composition.

17. The automotive paint removing composition of claim 2 , wherein the amine is aqua ammonia present at up to 5 wt % of the total weight of the automotive paint removing composition.

18. The chemical composition of claim 9 , wherein the amine is aqua ammonia present at 5 wt % of the total weight of the chemical composition.

19. The chemical composition of claim 9 , wherein the solvent is acetone and ranges from 36 wt % to 54 wt % the total weight of the composition.

Assignees

• Wm Barr & Co Inc

Inventors

• Hawes Charles L
• Teague Tim

Classifications

• C11D1/00

  Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent · CPC title

• C11D3/22

  Carbohydrates or derivatives thereof · CPC title

• C09D9/005

  containing organic solvents · CPC title

• C11D3/2093

  Esters; Carbonates · CPC title

• C11D3/2072

  Aldehydes-ketones · CPC title