METHODS AND COMPOSITIONS FOR CLEANING POLYMERIZED RESIDUE
First Claim
Patent Images
1. A method of cleaning residue from surfaces of paint production equipment, the method comprising:
- diluting a concentrate composition with water to produce a cleaning composition, the concentrate composition comprising;
a) at least 30 wt-% organic solvent selected from the group consisting of aromatic alcohol, glycol ether, and mixtures thereof;
b) at least 8 wt-% alkanolamine;
c) alkalinity source;
d) surfactant;
e) no more than 50 wt-% water, wherein the cleaning composition has a pH of 10 or higher at the time of dilution;
heating the cleaning composition to a temperature of at least 55°
C.; and
applying the cleaning composition to the surfaces of the paint production equipment.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure provides methods and compositions for cleaning soils from surfaces of processing equipment. The soils include aqueous based emulsion polymers that need to be removed from associated polymerization processing equipment. The equipment may be used in the production of paint or coating components. A cleaning composition is heated and applied to the equipment to be cleaned. Cleaning of interior surfaces can be performed using clean-in-place methods. The cleaning composition can include combinations of organic solvent, alkanolamine, water, chelating agent, alkali metal hydroxide, or surfactant.
-
Citations
30 Claims
-
1. A method of cleaning residue from surfaces of paint production equipment, the method comprising:
-
diluting a concentrate composition with water to produce a cleaning composition, the concentrate composition comprising; a) at least 30 wt-% organic solvent selected from the group consisting of aromatic alcohol, glycol ether, and mixtures thereof; b) at least 8 wt-% alkanolamine; c) alkalinity source; d) surfactant; e) no more than 50 wt-% water, wherein the cleaning composition has a pH of 10 or higher at the time of dilution; heating the cleaning composition to a temperature of at least 55°
C.; andapplying the cleaning composition to the surfaces of the paint production equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of cleaning residue from surfaces of paint production equipment, the method comprising:
-
diluting a concentrate composition with water to produce a cleaning composition, the concentrate composition comprising; a) at least 0.1 wt-% chelating agent; b) alkalinity source; c) surfactant; and d) no more than 50 wt-% water, wherein the cleaning composition has a pH of 10 or higher at the time of dilution; heating the cleaning composition to a temperature of at least 55°
C.; andapplying the cleaning composition to the surfaces of the paint production equipment. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
Specification