Solvent application in bottle wash using amidine based formulas

Patent metadata

Field	Value
Publication number	US-11629312-B2
Application number	US-202017247604-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	Feb 18, 2016
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

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 bottle washing comprising:
applying a label removing composition to a bottle in need of washing,
wherein the label removing composition comprises water in an amount less than about 70 wt-% of the composition, an aqueous or non-aqueous basic organic solvent and/or an amidine solvent, a surfactant, wherein the composition contains caustic in an amount from about 0 wt-% (caustic free) to about 2 wt-%, wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent; and

washing the bottle 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 washes the bottle within a period of time less than about 30 minutes.

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

4. The method of claim 1 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

5. The method of claim 4 , wherein said solvent is 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.

6. 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 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-%, water in an amount from about 10 wt-% to about 70 wt-%, an amidine solvent in the amount from about 5 wt-% to about 20 wt-%, and at least one surfactant in the amount from about 5 wt-% to about 40 wt-%.

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 composition has a pH between about 12 and about 14 and comprises an non-aqueous basic organic solvent in the amount from about 10 wt-% to about 50 wt-%, an amidine solvent in the amount from about 40 wt-% to about 70 wt-%, and at least one surfactant in the amount from about 5 wt-% to about 25 wt-%.

8. A composition for bottle washing comprising:
an aqueous or non-aqueous basic organic solvent and/or an amidine solvent;
at least one surfactant; and
water in an amount less than about 70 wt-% of the composition; and
wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent,
wherein the composition is sodium hydroxide free, and
wherein the composition has a pH between about 10 and about 14.

9. The composition of claim 8 , wherein the composition has a pH between about 12 and about 14, and wherein the surfactant is an anionic surfactant and/or nonionic surfactant.

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

11. The composition of claim 8 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

12. The composition of claim 8 , wherein said solvent is 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.

13. The composition of claim 9 , 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-%, water in an amount from about 10 wt-% to about 70 wt-%, an amidine solvent in the amount from about 5 wt-% to about 20 wt-%, and at least one surfactant in the amount from about 5 wt-% to about 40 wt-%.

14. The composition of claim 13 , further comprising an aromatic sulfonate material.

15. A composition for bottle washing comprising:
an aqueous or non-aqueous basic organic solvent and/or an amidine solvent, wherein the aqueous or non-aqueous basic organic solvent comprises an amine and/or amide solvent;
at least one surfactant, wherein the surfactant is an anionic surfactant and/or nonionic surfactant; and
water in an amount less than about 70 wt-% of the composition;
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.

16. The composition of claim 15 , wherein the composition has a pH between about 12 and about 14.

17. The composition of claim 15 , wherein the amidine solvent comprises 1,8-Diazabicyclo[5.4.0]undec-7-ene having the following structure:

18. The composition of claim 15 , wherein said solvent is a fatty dialkyl amide, fatty amidoamine and/or fatty esteramine.

19. The composition of claim 18 , wherein said solvent is 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.

Assignees

• Ecolab Usa Inc

Inventors

• Hunt Jr Clinton
• Chen Michael

Classifications

• Y02W30/62

  Plastics recycling; Rubber recycling · CPC title

• C11D1/521

  Carboxylic amides (R1-CO-NR2R3), where R1, R2 and R3 are alkyl or alkenyl groups · CPC title

• C11D3/32

  Amides; Substituted amides · CPC title

• B32B43/006

  Delaminating · CPC title

• C11D3/28 Primary

  Heterocyclic compounds containing nitrogen in the ring · CPC title