US2008283152A1PendingUtilityA1

Rinse conditioner bath for treating a substrate and associated method

47
Assignee: GREENE JEFFREY ALLENPriority: May 17, 2007Filed: May 17, 2007Published: Nov 20, 2008
Est. expiryMay 17, 2027(~0.8 yrs left)· nominal 20-yr term from priority
Inventors:Jeffrey Allen GreeneDonald Robb VonkMichel SudourMark W. Simpson
C23C 22/80
47
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Claims

Abstract

A rinse conditioner bath that comprises a Jernstedt salt and a soluble iron is disclosed. A method for treating a substrate with the disclosed rinse conditioner bath as well as a zinc phosphate solution is also disclosed.

Claims

exact text as granted — not AI-modified
1 . A rinse conditioner bath comprising a Jernstedt salt and a soluble iron. 
   
   
       2 . The rinse conditioner bath according to  claim 1 , wherein said soluble iron is iron (II). 
   
   
       3 . The rinse conditioner bath according to  claim 1 , wherein said iron comprises 5-1000 ppm of the total weight of said rinse conditioner bath. 
   
   
       4 . The rinse conditioner bath according to  claim 3 , wherein said iron comprises 20-30 ppm of the total weight of said rinse conditioner bath. 
   
   
       5 . The rinse conditioner bath according to  claim 1 , wherein said soluble iron is introduced into said rinse conditioner bath via a salt. 
   
   
       6 . The rinse conditioner bath according to  claim 1 , wherein said salt is in solid or aqueous form. 
   
   
       7 . The rinse conditioner bath according to  claim 5 , wherein said salt comprises ferrous nitrate, ferrous sulfate, ferrous chloride, ferrous gluconate, or combinations thereof. 
   
   
       8 . The rinse conditioner bath according to  claim 1 , wherein said rinse conditioner bath is prepared from a mixture of a rinse conditioner concentrate and an aqueous medium. 
   
   
       9 . The rinse conditioner bath according to  claim 8 , wherein said rinse conditioner concentrate is an aqueous rinse conditioner concentrate containing said soluble iron. 
   
   
       10 . The rinse conditioner bath according to  claim 8 , wherein said rinse conditioner concentrate is a powder concentrate and wherein said powder concentrate contains said soluble iron. 
   
   
       11 . The rinse conditioner bath according to  claim 1 , wherein said rinse conditioner bath further comprises chelating compounds. 
   
   
       12 . The rinse conditioner bath according to  claim 1 , wherein said soluble iron is a reaction product of iron (III) and a reducing agent. 
   
   
       13 . A method for treating a substrate comprising (a) applying a rinse conditioner bath comprising a Jernstedt salt and a soluble iron to at least a portion of said substrate, and (b) phosphatizing at least a portion of said portion of said substrate with a zinc phosphate solution. 
   
   
       14 . The method according to  claim 13 , wherein said soluble iron is iron (II). 
   
   
       15 . The method according to  claim 13 , wherein said iron comprises 5-1000 ppm of the total weight of said rinse conditioner bath. 
   
   
       16 . The method according to  claim 15 , wherein said iron comprises 20-30 ppm of the total weight of said rinse conditioner bath. 
   
   
       17 . The method according to  claim 13 , further comprising introducing said soluble iron into said rinse conditioner bath via a salt. 
   
   
       18 . The method according to  claim 17 , wherein said salt comprises ferrous nitrate, ferrous sulfate, ferrous chloride, ferrous gluconate, or combinations thereof. 
   
   
       19 . The method according to  claim 17 , wherein said salt is in solid form. 
   
   
       20 . The method according to  claim 17 , wherein said salt is in an aqueous medium. 
   
   
       21 . The method according to  claim 13 , wherein said rinse conditioner bath is prepared by (i) providing an aqueous solution and (ii) introducing an aqueous rinse conditioner concentrate comprising said Jernstedt salt and said soluble iron into said aqueous solution. 
   
   
       22 . The method according to  claim 21 , wherein said aqueous rinse conditioner concentrate comprises a liquid thickener, a chelating compound, and said Jernstedt salt. 
   
   
       23 . The method according to  claim 13 , wherein said rinse conditioner bath is prepared by (i) providing an aqueous solution, (ii) introducing a powder concentrate comprising said Jernstedt salt into said aqueous solution, and (iii) introducing said soluble iron into said aqueous solution. 
   
   
       24 . The method according to  claim 13 , wherein said rinse conditioner bath is prepared by (i) providing an aqueous solution, (ii) forming a powdered mixture comprising said soluble iron and said Jernstedt salt, and (iii) introducing said powdered mixture into said aqueous solution. 
   
   
       25 . The method according to  claim 13 , wherein said rinse conditioner bath further comprises chelating compounds. 
   
   
       26 . The method according to  claim 13 , wherein said soluble iron is a reaction product of iron (III) and a reducing agent. 
   
   
       27 . A rinse conditioner concentrate comprising a Jernstedt salt and another salt, wherein said another salt comprises a soluble iron. 
   
   
       28 . The rinse conditioner concentrate according to  claim 28 , wherein said another salt is in aqueous or solid form.

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