Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
70 words
A PROCESS FOR RECOVERING TIN SALTS FROM THE WASTE RINSE WATER OF A HALOGEN TIN PLATING PROCESS COMPRISING, INTRODUCING THE RINSE WATER INTO A DEPLETION COMPARTMENT OF AN ELECTRODIALYTIC CELL, INTRODUCING AN ELECTROLYTE SOLUTION INTO AND ANODE COMPARTMENT AND A CATHODE COMPARTMENT OF SAID ELECTRODIALYTIC CELL, SAID CATHODE COMPARTMENT SEPARATED FROM SAID DEPLETION COMPARTMENT BY A CATIONIC MEMBRANE, SAID DEPLETION COMPARTMENT SEPARATED FROM THE ANODE COMPARTMENT BY AN ANIONIC MEMBRANE,
Claim 2
Dependent Claim
70 words
A PROCESS FOR RECOVERING TIN SALTS FROM THE WASTE RINSE WATER OF A HALOGEN TIN PLATING PROCESS COMPRISING, INTRODUCING THE RINSE WATER INTO A DEPLETION COMPARTMENT OF AN ELECTRODIALYTIC CELL, INTRODUCING AN ELECTROLYTE SOLUTION INTO AND ANODE COMPARTMENT AND A CATHODE COMPARTMENT OF SAID ELECTRODIALYTIC CELL, SAID CATHODE COMPARTMENT SEPARATED FROM SAID DEPLETION COMPARTMENT BY A CATIONIC MEMBRANE, SAID DEPLETION COMPARTMENT SEPARATED FROM THE ANODE COMPARTMENT BY AN ANIONIC MEMBRANE,
Claim 3
Dependent Claim
49 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 1 which includes, introducing an electrolyte solution into an intermediate compartment of said electrodialytic cell, said intermediate compartment separated from said depletion compartment by an anionic membrane.
Claim 4
Dependent Claim
37 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 1 in which, said electrolyte solution in said anode compartment contains a sulphuric acid solution.
Claim 5
Dependent Claim
37 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 1 in which, said electrolyte solution in said anode compartment contains a hydrofluoric acid solution.
Claim 6
Dependent Claim
36 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 1 in which, said electrolyte solution in said cathode compartment contains a caustic solution.
Claim 7
Dependent Claim
33 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 5 in which, said caustic solution is a sodium hydroxide solution.
Claim 8
Dependent Claim
35 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 2 in which, said electrolyte solution in said intermediate compartment contains hydrofluoric acid.
Claim 9
Dependent Claim
60 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 2 in which, said electrolyte solution in said intermediate compartment contains hydrofluoric acid and said electrolyte solution in said anode compartment contains a sulphuric acid solution, said intermediate compartment separated from said anode compartment by a cationic membrane.
Claim 10
Dependent Claim
37 words
A process for recovering tin salts from the waste rinse water of a halogen tin plating process as set forth in claim 2 in which, said electrolyte solution in said intermediate compartment contains a hydrofluoric acid solution.
Claim 11
Dependent Claim
27 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 which includes, filtering the rinse wateR and removing insoluble materials therefrom.
Claim 12
Dependent Claim
27 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 which includes, treating the rinse water and removing organic materials therefrom.
Claim 13
Dependent Claim
58 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 which includes, subjecting the rinse water solution with a reduced mole ratio of fluoride to tin to reverse osmosis and removing a substantial portion of the water therefrom to form a concentrated solution having the reduced mole ratio of fluoride to tin.
Claim 14
Dependent Claim
32 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 which includes, introducing the concentrated solution into the plating bath of a halogen tin plating process.
Claim 15
Dependent Claim
37 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 which includes, recycling the water removed from the rinse water solution to the recovery section of a halogen tin plating process.
Claim 16
Dependent Claim
55 words
A process for recovering tin salts from waste rinse water as set forth in claim 1 in which, said waste rinse water contains fluoride and tin in a mole ratio of between 25 and 21:1 and said rinse water withdrawn from said electrodialytic cell contains fluoride and tin in a mole ratio below about 8:1.
Claim 17
Dependent Claim
57 words
A process for recovering tin salts from waste rinse water as set forth in claim 9 which includes, withdrawing a portion of the hydrofluoric acid solution from said intermediate compartment, withdrawing a portion of the sodium hydroxide solution from the cathode compartment, reacting said withdrawn sodium hydroxide solution and hydrofluoric acid solutions to form a sodium bifluoride.
Claim 18
Dependent Claim
47 words
A process for reducing the mole ratio of a halogen to tin in a solution containing a halogen and tin comprising, introducing the solution into an electrodialytic cell, passing a current through the electrodialytic cell and reducing the mole ratio of halogen to tin in the solution.
Claim 19
Dependent Claim
47 words
A process for reducing the mole ratio of a halogen to tin in a solution containing a halogen and tin comprising, introducing the solution into an electrodialytic cell, passing a current through the electrodialytic cell and reducing the mole ratio of halogen to tin in the solution.