Temporary coating system

• US 5,453,459 A
• Filed: 07/05/1994
• Issued: 09/26/1995
• Est. Priority Date: 08/10/1992
• Status: Expired due to Fees

• Current Assignee: Henkel Corporation (Henkel AG & Co KGaA)
• Original Assignee: Henkel Corporation (Henkel AG & Co KGaA)
• Inventors: Roberts, Wilbert J.
• Primary Examiner(s): SMITH, JEFFREY
• Application Number:
  US08/270,863
• Time in Patent Office: 448 Days
• Field of Search: 134/38, 252/544, 252/546, 427/154, 524/556, 524/456, 524/458, 524/460, 524/558, 524/528, 524/123, 524/130, 524/145
• US Class Current: 524/123
• CPC Class Codes: C09D 5/008 Temporary coatings C09D5/20 takes precedence
• CPC Class Codes: C09D 9/04 with surface-active agents

Abstract

The invention is a composition for providing a temporary coating to protect the surface of an article and a solvent free composition for rapidly removing the coating from the article. The invention also includes a method for protecting a surface of an article and a system for carrying out the process.

Claims

1. A coating remover composition which comprises:

water and from about 5 to about 20 v/v % of a concentrate composition comprising;

(a) 5% to 40% by weight of dialkylalkanolamine;

(b) 2 to 25% by weight monoalkanolamine;

(c) 0.5 to 15% by weight nonionic surfactant;

(d) 0.1 to 10% by weight chelating agent;

(e) 0.5 to 20% by weight polyethylene glycol having a mole weight of 200-4000;

(f) 0.1 to 10% by weight anionic surfactant; and

(g) water.

2. A coating remover composition of claim 1 wherein the chelating agent is selected from the group consisting of an alkali metal citrate, ammonium citrate, ethylenediaminetetraacetic acid and its acid salts, nitrilotriacetic acid salts, gluconic acid salt, heptogluconate salt, 1-hydroxyethylidene-1,1-diphosphonic acid and amino tri(methylene phosphonic acid).

3. A coating remover composition of claim 1 wherein the anionic surfactant comprises a phosphate ester surfactant.

4. A coating remover composition of claim 1 wherein the dialkyl alkanolamine is selected from the group consisting of diethyl ethanolamine and dimethyl ethanolamine.

5. A coating remover of claim 1 comprising water and from about 8 to about 15 v/v % of the concentrate.

6. A system for temporarily coating a surface of an article and rapidly removing the coating which comprises:

a coating remover composition of claim 1 and a weather resistant, rapidly removable, temporary coating composition which comprises;

(a) from about 3 to about 25% by weight of a film forming acrylic polymer, an acrylic copolymer or a mixture thereof;

(b) from about 0.1 to about 5% by weight of a nonionic surfactant comprising a hydroxylated or ethoxylated acetylenically unsaturated hydrophobic moiety;

(c) from 0 to about 10% by weight of an anionic phosphate ester surfactant;

(d) from about 0.5 to about 10% by weight of a neutralizing agent, above the amount associated with the polymer and anionic surfactant; and

(e) water.

7. The system of claim 6 wherein the coating composition comprises from about 0.1 to about 10% by weight of a phosphate ester anionic surfactant.

8. A system of claim 7 wherein the coating composition comprises:

(a) 7 to 20% by weight of the film forming acrylic polymer or copolymer;

(b) 0.2 to 3% by weight of the acetylenically unsaturated nonionic surfactant;

(c) 0.5 to 5% by weight of the phosphate ester anionic surfactant;

(d) 2 to 5% by weight dialkylalkanol amine; and

(e) water.

9. A system of claim 6 wherein the acrylic polymer or copolymer, in the coating composition, comprises a copolymer comprising ethylene and acrylic acid which is partially reacted with a metal cation.

10. A system of claim 6 wherein the nonionic surfactant, in the coating composition, comprises two alkyl moieties having from 4 to about 10 carbon atoms connected through an acetylenic linkage having at least one hydroxyl group or at least one ethoxy group appended to the carbon atom in each moiety adjacent the acetylenic linkage.

11. A system of claim 7 wherein the nonionic surfactant, in the coating composition, comprises two alkyl moieties having from 4 to about 10 carbon atoms connected through an acetylenic linkage having at least one hydroxyl group or at least one ethoxy group appended to the carbon atom in each moiety adjacent the acetylenic linkage.

12. A system of claim 6 wherein the pH of the coating composition is from about 7 to about 10.5.

13. A system of claim 7 wherein the pH of the coating composition is from about 7 to about 10.5.

14. A system of claim 7 wherein the ester groups of the ionic phosphate ester surfactant, in the coating composition, are independently selected from the group consisting of the of a fatty alcohol having from 7 to about 18 carbon atoms and the of an ethoxylated fatty alcohol having from 7 to about 18 carbon atoms and from about 1 to about 20 ethoxy groups.

15. A system of claim 6 wherein the neutralizing agent, in the coating composition, comprises a dialkyl alkanolamine.

16. A composition of claim 15 wherein the neutralizing agent comprises diethyl ethanolamine.

17. A coating remover composition of claim 1 which comprises water and from 5 to about 20 v/v % of a concentrate composition comprising:

(a) from about 5 to about 35% by weight of a dialkyl alkanolamine;

(b) from about 2.5 to about 15% by weight of a primary monoalkanolamine;

(c) from about 0.5 to about 10% by weight of a nonionic surfactant;

(d) from about 0.5 to about 10% by weight of a chelating agent;

(e) from about 0.5 to about 10% by weight of a polyethylene glycol with a mole weight of from about 200 to about 4,000;

(f) from about 0.1 to about 5% by weight of an anionic surfactant; and

(g) water.

18. A composition of claim 17 wherein the chelating agent is selected from the group consisting of an alkali metal citrate, ammonium citrate, ethylenediaminetetraacetic and its acid salts, nitrilotriacetic acid salts, gluconic acid salt, heptogluconate salt, 1-hydroxyethylidene-1,1-diphosphonic acid and amino tri(methylene phosphonic acid).

19. A composition of claim 17 where in the anionic surfactant is a phosphate ester surfactant.

20. A composition of claim 17 wherein the dialkyl alkanolamine is selected from the group consisting of diethyl ethanolamine and dimethyl ethanolamine.

21. A system of claim 6 wherein the coating composition further comprises a rheology modifier.

22. A system of claim 21 wherein the rheology modifier comprises an alkali soluble acrylic polymer.

23. A system of claim 7 wherein the coating composition further comprises a rheology modifier.

24. A system of claim 23 wherein the rheology modifier comprises an alkali soluble acrylic polymer.

25. A system of claim 8 wherein the coating composition further comprises a rheology modifier.

26. A system of claim 25 wherein the rheology modifier comprises an alkali soluble acrylic polymer.

27. A system for temporarily coating a surface of an article and rapidly removing the coating which comprises:

(1) the coating remover composition of claim 17 and a weather resistant, rapidly removable, temporary coating composition which comprises;

(a) from about 3 to about 25% by weight of a film forming acrylic polymer, an acrylic copolymer or a mixture thereof;

(b) from about 0.1 to about 5% by weight of a nonionic surfactant comprising a hydroxylated or ethoxylated acetylenically unsaturated hydrophobic moiety;

(c) from 0 to about 10% by weight of an anionic phosphate ester surfactant;

(d) from about 0.5 to about 10% by weight of a neutralizing agent, above the amount associated with the polymer and anionic surfactant; and

(e) water.

28. A coating remover composition of claim 17 comprising water and from about 8 to about 15 v/v % of the concentrate.