Skip to main content

Full text of "USPTO Patents Application 09868995"

See other formats


REMARKS 



Entry of this Preliminary Amendment is requested. The above-made 
amendments have been made to place the application in conformance with U.S. 
standards. No new matter has been added. 



Bayer Corporation 
100 Bayer Road 

Pittsburgh, Pennsylvania 15205-9741 
(412) 777-8355 

FACSIMILE PHONE NUMBER: 

(412)777-8363 
s:\kgb\dve276pa 




bmitted 



Diderico van 6yl/ 
Attorney for Arpyiicants 
Reg. No. 38jB41 



Mo-6398 



-7- 



Mo-6398 
STA-154 

Mark d-Up Version to R fl ct Changes in th Sp cificati n 

IN THE SPECIFICATION 

In page 1 , the Title was replaced with the following Title: 
--NICKEL MIXED HYDROXIDE, METHOD FOR PRODUCING THE SAME, AND 
THE USE THEREOF AS A CATHODE MATERIAL IN ALKALINE BATTERIES— 

In page 1 , below the Title, the following was added: 

-This application is the National Stage Application of PCT/EP99/09912, 
which claims a priority from German Applications 198 60 143.3 filed December 24, 
1998, and 199 39 025.8, filed August 18, 1999.- 

On page 1 , above line 5, the following heading was added: 

- BACKGROUND - 
On page 3, line 1, above the line beginning with "The invention...," the 
following heading was added: 

- DESCRIPTION - 
On page 9, below line 10, the following was added: 
—The examples below are illustrative examples in which all parts and 
percentages are by weight unless otherwise indicated.- 
On page 20, line 13, the following was added: 

-Although the present invention has been described in detail with reference 
to certain preferred versions thereof, other variations are possible. Therefore, the 
spirit and scope of the appended claims should not be limited to the description of 
the versions contained therein. -- 
IN THE CLAIMS 

Claims 1-1 1 were cancelled and new Claims 12-24 were added: 

— 12. Nickel mixed hydroxide with Ni as the main element and with a 
layer structure, comprising 

a) at least one element M a from the group comprising Fe, Cr, Co, Ti, Zr 

and Cu which is present in two different oxidation states which differ by 
one electron in terms of the number of outer electrons; 



Mo-6398 



-8- 



b) at least one element M b from the group comprising B, Al, Ga, In and 
rare earth metals present in the trivalent oxidation state; 

c) optionally at least one element M c from the group comprising Mg, Ca, 
Sr, Ba and Zn present in the divalent oxidation state; 

d) apart from the hydroxide, at least one additional anion selected from 
the group consisting of halides, carbonate, sulfate, acetate, oxalate, 
borate and phosphate in a quantity sufficient to preserve the 
electroneutrality of the mixed hydroxide; and 

e) water of hydration in a quantity which stabilizes the relevant structure 
of the mixed hydroxide. 

13. The nickel mixed hydroxide according to Claim 12, wherein the 
proportion of Ni is from 60 to 92 mol % and the total proportion of the elements M a , 
M b and M c is from 40 to 8 mol %, in each case based on the total amount of Ni, M a , 
M b and M c . 

14. The nickel mixed hydroxide according to Claim 12, wherein the 
proportion of the element M a is from 10 to 40 mol %, based on the total amount of 
the elements M a , M b and M c . 

15. The nickel mixed hydroxide according to Claim 12, wherein the 
proportion of the element M c is from 1 to 30 mol %, based on the total amount of 
elements M a , M b and M c . 

16. The nickel mixed hydroxide according to Claim 12, wherein the degree 
of oxidation a of the element M a , defined according to the following formula (I), is 
from 0.01 to 0.99 

M a +(x+1) 

a= (I), 

M a +(x+1) + M a +X 

wherein M a +(x+1) means the molar quantity of the element M a in the higher oxidation 
state, and M a +(x) the molar quantity of the element M a in the lower oxidation state, 
and x is a number between 1 and 3. 



Mo-6398 



-9- 



17. The nickel mixed hydroxide according to Claim 12, wherein the nickel 
mixed hydroxide is in the form of a powder with an average particle size from 1 to 
100 ^m. 

18. The nickel mixed hydroxide according to Claim 12, wherein the rare 
earth metals of the element M b are selected from the group consisting of SC, Y and 
La. 

19. The nickel mixed hydroxide according to Claim 12, wherein the halides 
are selected from the group consisting of fluoride and chloride. 

20. The nickel mixed hydroxide according to Claim 12, wherein the nickel 
mixed hydroxide is a cathode material in an alkaline battery. 

21 . A process for preparing a nickel mixed hydroxide with Ni as the 
main element and with a layer structure, comprising: 

a) at least one element M a selected from the group consisting of Fe, Cr, 
Co, Ti, Zr and Cu which is present in two different oxidation states 
which differ by one electron in terms of the number of outer electrons; 

b) at least one element M b from selected from the group consisting of B, 
Al, Ga, In and rare earth metals present in the trivalent oxidation state; 

c) optionally at least one element M c selected from the group consisting 
of Mg, Ca, Sr, Ba and Zn present in the divalent oxidation state; 

d) apart from the hydroxide, at least one additional anion selected from 
the group consisting of halides, carbonate, sulfate, acetate, oxalate, 
borate and phosphate in a quantity sufficient to preserve the 
electroneutrality of the mixed hydroxide; and 

e) water of hydration in a quantity which stabilizes the relevant structure 
of the mixed hydroxide, 

the process comprising reacting components required to obtain the 
relevant mixed hydroxides in the form of water-soluble salts of Ni and of the 
elements M a , M b and optionally M c in a basic, aqueous medium for the co-precipita- 
tion of hydroxide reaction products with the formation of a homogeneous suspension 
of said reaction products, 



Mo-6398 



-10- 



wherein either water-soluble salts of the element M a are used in different 
oxidation states or a water-soluble salt of the element M a is used in the lower 
oxidation state and a partial oxidation is carried out until the desired ratio is obtained 
between the different oxidation states of the element M a , or a water-soluble salt of 
the element M a is used in the higher oxidation state and a partial reduction is carried 
out until the desired ratio is obtained between the different oxidation states of the 
element M a , separation of the water from the suspension, and drying of the reaction 
products. 

22. The process according to Claim 21 , wherein at least one of the 
reaction components is introduced into the aqueous medium by anodic oxidation of 
the corresponding metal. 

23. The process according to Claim 21 , wherein the reaction is carried out 
at a pH from 8 to 13. 

24. The process according to Claim 21 , wherein partial oxidation is carried 
out by using oxygen, H 2 0 2 , hypochlorite, peroxodi sulfates or percarbonates as 
oxidizing agent. 



Mo-6398 



-11-