IP Library Granted Patent US 12,012,572
Granted Patent B2
US 12,012,572 · App. 16/154,032 · Granted Jun 18, 2024

Automotive paint remover composition and method of making

Inventors: Charles L. Hawes (Cordova, TN); Tim Teague (Nesbit, MS)
Assignee: W.M. Barr & Company, Inc.
C11D3/2096C09D9/005C11D1/00C11D3/124C11D3/18C11D3/22C11D3/225C11D3/30C11D3/40C11D3/43C11D1/66C11D3/2072C11D3/2093C11D3/24
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,012,572
App. No.
16/154,032
Granted
Jun 18, 2024
Kind
B2
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.

Claims (30)

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.

Assignments (3)
SECURITY INTEREST Recorded Dec 10, 2025
From: W.M. BARR & COMPANY, INC.
To: FIFTH THIRD BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 073906/0028 →
SECURITY AGREEMENT Recorded Feb 5, 2020
From: W.M. BARR & COMPANY, INC.
To: FIFTH THIRD BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 051834/0168 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2019
From: HAWES, CHARLES L.; TEAGUE, TIM
To: W.M. BARR & COMPANY, INC.
Reel/Frame 051009/0523 →
Cited By (1)
US 12,466,966