Organic expander for lead-acid storage batteries
AssigneeLignoTech USA, Inc.
InventorsTimothy J. McNally, Michael E. Sanford, Bernt O. Myrvold, Detchko Pavlov Detchkov, Temelaki Vasilev Rogachev, Geno Petkov Papazov, Maria Borisova Matrakova
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Abstract
An organic expander composition for improving the cycle life and the cold crank ability properties of lead-acid batteries as compared to standard or oxylignin organic expanders. The organic expander composition is obtained by a blend of oxylignin and kraft lignin.
Claims35
An organic expander composition for use in a negative plate of a lead-acid storage battery, comprising a blend of an oxylignin and a kraft lignin, said blend containing from about 1 part oxylignin and about 2 parts kraft lignin to about 2 parts oxylignin and about 1 part kraft lignin, wherein said blend further includes water, and wherein said blend has a pH of from about 6 to about 11.4.
A paste for use in a negative plate of a lead-acid storage battery, comprising an admixture of:
- water;
- a lead-containing compound;
- and
- an organic expander composed of a blend of an oxylignin and a kraft lignin, said blend containing from about 1 part oxylignin and about 2 parts kraft lignin to about 2 parts oxylignin and about 1 part kraft lignin, and wherein said blend has a pH of from about 6 to about 11.4.
A negative plate for a lead-acid storage battery, comprising:
- a grid;
- and
- a paste covering said grid, said paste comprising an admixture of water, a lead-containing compound, and an organic expander composed of a blend of an oxylignin and kraft lignin, said blend containing from about 1 part oxylignin and about 2 parts kraft lignin to about 2 parts oxylignin and about 1 part kraft lignin, and wherein said blend has a pH of about 6 to about 11.4.
A method of making a negative plate for a lead-acid storage battery, comprising the steps of:
- preparing a paste comprising an admixture of water, a lead-containing compound, and an organic expander composed of a blend of an oxylignin and a kraft lignin, said blend containing from about 1 part oxylignin and about 2 parts kraft lignin to about 2 parts oxylignin and about 1 part kraft lignin, and wherein said blend has a pH of between about 6 to about 11.4;
- covering a grid with said paste;
- and
- curing said paste on said grid.
Dependencies are inferred from the claim text.