Coating for metal containers, metalworking lubricant compositions, compositions for electroplating and electrowinning, latex compositions and processes therefor

Abstract

Coatings for metal containers, metalworking lubricant compositions, compositions for electroplating and electrowinning, and latex compositions comprising a base-catalyzed reaction product of (a) at least one compound of formula IR1(X)3  (I)wherein each X group is a halogen atom or one X group is a halogen atom and two X groups represent an epoxy oxygen atom, which is attached to two adjacent carbon atoms in the R1 group to form an epoxy group, and R1 is an alkanetriyl group containing from 3 to 10 carbon atoms; and (b) at least one compound having the formula IIR2X(AO)nY  (II)wherein R2 is a substituted or unsubstituted, saturated or unsaturated, organic group having from 1 to 36 carbon atoms; X is —O—, —S—, or —NR3— where R3 is hydrogen or a C1-C18 alkyl group; each AO group is independently an ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy group, n is a number from 0 to 200; and Y is hydrogen, or Y can be a mercapto group or an amino group or a C1-C6 alkylamino group in place of a terminal —OH group, provided that when Y is mercapto or an amino group, or a C1-C6 alkylamino group, n is at least 1; wherein the mole ratio of component a) to b) is from 0.1:1 to 5:1; are described.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority, under 35 U.S.C. §119(e), of U.S. Provisional Patent Application Nos. 60 / 423,118, 60 / 424,249, 60 / 430,485, and 60 / 434,477, filed on Nov. 1, 2002, Nov. 6, 2002, Dec. 3, 2002 and Dec. 18, 2002, respectively, the entire contents of each of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]One of the last stages in the manufacture of aluminum cans and other metal containers such as ferrous metal containers is the application of one or more finishing coatings for decorative purposes and / or identification.[0003]Such finishing coatings include acrylic paints, phenolic coatings which are used for baked can coatings, bitumen paints which are used for aluminum paints, coumarone-indene paints which are used to make aluminum paints, lacquers (which is a term also applied to the baking finish applied to the interior of food and beverage cans), and enamels.[0004]Lubricating oils are fluids whose...

AI Technical Summary

Benefits of technology

[0017]The presence of the above reaction product or products in the metal container coatings improves wetting of the substrate to be coated, improves the flow and leveling of the coating, improves the gloss of the dried coating, and enables the manipulation of the shear viscosity of spray applied coatings, i.e. the viscosity can be either increased or decreased by selection of the molecular weight and quantity of the reaction product or products.

[0027]The presence of component B) in the metalworking lubricant compositions of the invention enhances the wettability of the lubricant and helps disperse metal fines. In addition, the lubricating and defoaming properties of the compositions are improved as well as their extreme pressure properties. The composition provides excellent wetting properties under dynamic and high shear applications without creating foam. Also, very consistent performance is obtained under a wide range of metal processing conditions.

[0036]The presence of component B) in the aqueous compositions of the invention acts as an effective brightener in electroplating, electrowinning, and electroforming baths. Component B) is a low foaming surfactant and is quite stable in both aqueous acidic and alkaline solutions. In addition, very consistent performance is achieved over a wide range of processing conditions due to the presence of component B) in the above aqueous compositions.

Problems solved by technology

However, the use of wetting and / or defoaming agents in natural rubber latex compositions has not been uniformly satisfactory, since a number of criteria must be met, e.g. the wetting and / or defoaming agent must not destabilize the latex composition, and the defoaming agent must be highly effective since otherwise small holes may be present in the finished article, which can be a serious problem for dipped articles such as gloves for medical and surgical use.