Low temperature composition for plating pretreatment of ferrous metals

Claim 1

A formulation for the treatment of the surfaces of ferrous metal parts having the following formulation: ______________________________________ Composition Percent by Weight ______________________________________ (A) An alkaline builder including, in the composite, sodium hydroxide, sodium metasilicate, and sodium carbonate wherein the components are present as follows: Sodium hydroxide 15-30 Sodium metasilicate 10-30 Sodium carbonate 10-30 (B) A water conditioner including, in the composite, sodium tripolyphosphate and tetrasodium ethylenediaminetetraacetate in the concentrations: Sodium tripolyphosphate (determined as anhydrous) 10-15 Tetrasodium ethylene- diaminetetraacetate (determined as the tetrahydrate) 1-5 Alpha-sodium glucoheptonate (determined as the dihydrate) 5-15 (C) A surfactant, including, in the composite, the sodium salt of petroleum sulfonic acid (petroleum sulfonate) 1-10 Linear ethoxylated alcohol organic phosphate ester complex 1-10 ##STR6## Wherein R represents an alkyl group contain- ing from between 8 and 10 carbon atoms and wherein "n" is an integer ranging from 1 to 6. And a modified straight chain aliphatic polyether having the structural formula as follows: 1-10 RO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 R.sup.1 Ralkyl R.sup.1a hydrophobic group (D) Hexylene glycol 1-10 ______________________________________

Claim 4

The method of cleaning ferrous metal parts which includes the step of immersing said parts into an aqueous solution containing from between about 4 and 10 ounces per gallon of a formulation having the following composition: ______________________________________ Composition Percent by Weight ______________________________________ (A) An alkaline builder including, in the composite, sodium hydroxide, sodium metasilicate, and sodium carbonate wherein the components are present as follows: Sodium hydroxide 15-30 Sodium metasilicate 10-30 Sodium carbonate 10-30 (B) A water conditioner including, in the composite, sodium tripolyphosphate and tetrasodium ethylenediaminetetraacetate in the concentrations: Sodium tripolyphosphate (determined as anhydrous) 10-15 Tetrasodium ethylene- diaminetetraacetate (determined as the tetrahydrate) 1-5 Alpha-sodium glucoheptonate (determined as the dihydrate) 5-15 (C) A surfactant, including, in the composite, the sodium salt of petroleum sulfonic acid (petroleum sulfonate) 1-10 Linear ethoxylated alcohol organic phosphate ester complex 1-10 ##STR8## Wherein R represents an alkyl group contain- ing from between 8 and 10 carbon atoms and wherein "n" is an integer ranging from 1 to 6. And a modified straight chain aliphatic polyether having the structural formula as follows: 1-10 RO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 R.sup.1 Ralkyl R.sup.1a hydrophobic group (D) Hexylene glycol 1-10 ______________________________________ wherein said aqueous working solution is maintained at a temperature of between about 130° F. and 200° F.

Claim 5

The method of cleaning ferrous metal parts which includes the step of immersing said parts into an aqueous solution containing from between about 4 and 10 ounces per gallon of a formulation having the following composition: ______________________________________ Composition Percent by Weight ______________________________________ (A) An alkaline builder including, in the composite, sodium hydroxide, sodium metasilicate, and sodium carbonate wherein the components are present as follows: Sodium hydroxide 15-30 Sodium metasilicate 10-30 Sodium carbonate 10-30 (B) A water conditioner including, in the composite, sodium tripolyphosphate and tetrasodium ethylenediaminetetraacetate in the concentrations: Sodium tripolyphosphate (determined as anhydrous) 10-15 Tetrasodium ethylene- diaminetetraacetate (determined as the tetrahydrate) 1-5 Alpha-sodium glucoheptonate (determined as the dihydrate) 5-15 (C) A surfactant, including, in the composite, the sodium salt of petroleum sulfonic acid (petroleum sulfonate) 1-10 Linear ethoxylated alcohol organic phosphate ester complex 1-10 ##STR8## Wherein R represents an alkyl group contain- ing from between 8 and 10 carbon atoms and wherein "n" is an integer ranging from 1 to 6. And a modified straight chain aliphatic polyether having the structural formula as follows: 1-10 RO(CH.sub.2 CH.sub.2 O).sub.n CH.sub.2 CH.sub.2 R.sup.1 Ralkyl R.sup.1a hydrophobic group (D) Hexylene glycol 1-10 ______________________________________ wherein said aqueous working solution is maintained at a temperature of between about 130° F. and 200° F.