Solvent application in bottle wash using amidine based formulas

Patent metadata

Field	Value
Publication number	US-10266794-B2
Application number	US-201715434356-A
Country	US
Kind code	B2
Filing date	Feb 16, 2017
Priority date	Feb 18, 2016
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

According to the invention, the compositions and methods provide for the complete removal of labels, synthetic glues and/or adhesives from a plurality of surfaces through the use of an aqueous or non-aqueous basic organic solvent and/or an amidine, optionally in combination with surfactants, chelants, acidulants and/or additional bottle wash additives. Beneficially, the compositions and methods are suitable for use at lower temperatures and pH conditions, along with under caustic-free and/or reduced caustic conditions to effectively remove such labels, synthetic glues and/or adhesives from a surface within less than about 30 minutes.

First claim

What is claimed is:

1. A method for removing soils, labels and other adhesive material from a surface comprising:
applying a label removing composition to a surface in need of removal of an adhesive material, wherein the label removing composition comprises an aqueous or non-aqueous basic organic solvent; and an amidine solvent in the amount from about 5 wt-% to about 20 wt-% when the solvent is an aqueous basic organic solvent, or in the amount from about 40 wt-% to about 70 wt-% when the solvent is a non-aqueous basic organic solvent and at least one surfactant in the amount from about 5 wt-% to about 40 wt-%, wherein the composition contains caustic in an amount from about 0 wt-% (caustic free) to about 2 wt-%; and
removing said soils, labels and other adhesive material from the surface within a period of time less than about 60 minutes;
wherein the temperature of the label removing composition is below about 80° C., and
wherein the pH of the label removing composition is between about 10 and about 14.

2. The method of claim 1 , wherein the label removing composition has a pH between about 12 and about 14, and wherein the label removing composition is at a temperature from about 50° C. to about 60° C. and removes said soils, labels and other adhesive material within a period of time less than about 30 minutes.

3. The method of claim 1 , wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent, and further comprises water in an amount less than about 70 wt-% of the label removing composition.

4. The method of claim 3 , wherein the amidine solvent comprises 1,8-Diazabicyclo[5.4.0]undec-7-ene having the following structure:

5. The method of claim 3 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

6. The method of claim 5 , wherein said solvent has the general structure:
R 1 —CO-Xm-An-NR 2 R 3

where R 1 is a C 9 -C 16 chain that is linear or branched, saturated or unsaturated; X is O or NH; A is C 2 -C 8 alkylene; m is 0 or 1; n is 0 or 1; and R 2 and R 3 are the same or different C 1 -C 6 alkyl.

7. The method of claim 1 , wherein the surfactant is an anionic surfactant and/or nonionic surfactant and optionally includes any one or more of the additional functional ingredients, and wherein the label removing composition substantially or completely removes said adhesive materials comprising natural and/or synthetic adhesives and said labels comprising metallic labels without compromising any cleaning performance on the surface and/or creating any pulping or other residue within a cleaning system, and wherein the composition has a pH between about 12 and about 14 and comprises an aqueous basic organic solvent in the amount from about 0.1 wt-% to about 15 wt-%, and water in an amount from about 10 wt-% to about 70 wt %.

8. The method of claim 1 , wherein the surfactant is an anionic surfactant and/or nonionic surfactant and optionally includes any one or more of the additional functional ingredients, and wherein the label removing composition substantially or completely removes said adhesive materials comprising natural and/or synthetic adhesives and said labels comprising metallic labels without compromising any cleaning performance on the surface and/or creating any pulping or other residue within a cleaning system, and wherein the composition has a pH between about 12 and about 14 and comprises a non-aqueous basic organic solvent in the amount from about 10 wt-% to about 50 wt-%.

9. A composition for removing soils, labels and other adhesive material from a hard surface comprising:
an aqueous or non-aqueous basic organic solvent; and
an amidine solvent in the amount from about 5 wt-% to about 20 wt-% when the solvent is an aqueous basic organic solvent, or in the amount from about 40 wt-% to about 70 wt-% when the solvent is a non-aqueous basic organic solvent; and
at least one surfactant in the amount from about 5 wt-% to about 40 wt-%; and
wherein the composition is sodium hydroxide free, and
wherein the composition has a pH between about 10 and about 14.

10. The composition of claim 9 , wherein the composition has a pH between about 12 and about 14, wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent, and wherein the surfactant is an anionic surfactant and/or nonionic surfactant.

11. The composition of claim 9 , wherein the amidine solvent comprises 1,8-Diazabicycloundec-7-ene having the following structure:

12. The composition of claim 9 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

13. The composition of claim 9 , wherein said solvent has the general structure:
R 1 —CO-Xm-An-NR 2 R 3

where R 1 is a C 9 -C 16 chain that is linear or branched, saturated or unsaturated; X is O or NH; A is C 2 -C 8 alkylene; m is 0 or 1; n is 0 or 1; and R 2 and R 3 are the same or different C 1 -C 6 alkyl.

14. The composition of claim 10 , wherein the surfactant comprises an alkyl sulfonate and/or alkoxylated surfactant, and further comprising at least one bottle washing additive selected from the group consisting of a defoaming agent, wetting agent, rinse aid, catalyst, corrosion inhibitor, and combinations thereof, and wherein the composition comprises an aqueous basic organic solvent in the amount from about 0.1 wt-% to about 15 wt-%, and water in an amount from about 10 wt-% to about 70 wt %.

15. The composition of claim 14 , further comprising an aromatic sulfonate material.

16. A composition for removing soils, labels and other adhesive material from a hard surface comprising:
an aqueous or non-aqueous basic organic solvent; and
an amidine solvent in the amount from about 5 wt-% to about 20 wt-% when the solvent is an aqueous basic organic solvent, or in the amount from about 40 wt-% to about 70 wt-% when the solvent is a non-aqueous basic organic solvent; and
at least one surfactant, wherein the surfactant is an anionic surfactant and/or nonionic surfactant in the amount from about 5 wt-% to about 40 wt-%; and
wherein the composition contains caustic in the amount from about 0 wt-% to about 2 wt-%, and
wherein the composition has a pH between about 10 and about 14.

17. The composition of claim 16 , wherein the composition has a pH between about 12 and about 14, and wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent.

18. The composition of claim 16 , wherein the amidine solvent comprises 1,8-Diazabicycloundec-7-ene having the following structure:

19. The composition of claim 16 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

20. The composition of claim 19 , wherein said solvent has the general structure:
R 1 —CO-Xm-An-NR 2 R 3

where R 1 is a C 9 -C 16 chain that is linear or branched, saturated or unsaturated; X is O or NH; A is C 2 -C 8 alkylene; m is 0 or 1; n is 0 or 1; and R 2 and R 3 are the same or different C 1 -C 6 alkyl.

21. The composition of claim 16 , wherein the surfactant comprises an alkyl sulfonate and/or alkoxylated surfactant, and further comprising at least o

Assignees

• Ecolab Usa Inc

Inventors

• Hunt Jr Clinton
• Chen Michael

Classifications

• C11D1/46

  Esters of carboxylic acids with amino alcohols; Esters of amino carboxylic acids with alcohols · CPC title

• C11D1/528

  Carboxylic amides (R1-CO-NR2R3), where at least one of the chains R1, R2 or R3 is interrupted by a functional group, e.g. a -NH-, -NR-, -CO-, or -CON- group (ethers C11D1/526) · CPC title

• B08B9/083

  Removing scrap from containers, e.g. removing labels · CPC title

• C11D3/43

  Solvents · CPC title

• B29C63/0013

  Removing old coatings · CPC title