Formulation and process for making formulation for...

Details Formulation and process for making formulation for... Formulation and process for making formulation for...

2007-06-05

2007-06-05

Richter, Johann (Department: 1616)

Drug, bio-affecting and body treating compositions

Inorganic active ingredient containing

Heavy metal or compound thereof

C008S09419C, C008S094270, C424S656000, C514S505000

Reexamination Certificate

active

11031193

ABSTRACT:
A formulation and process for making a formulation for leather tanning using highly complexed Chrome III salts coupled with polymer complexing agents of medium and low molecular weight in the range of 500 to 10,000. Complexing polymers can contain vinylic acid/ester co-polymers, polyamine/polyamide co-polymers and polymers condensed from saturated carbon linked aromatic groups based on phenol and naphthalene sulfonates or other aromatic rings.

REFERENCES:
patent: 4750906 (1988-06-01), Schmidt
patent: 4875900 (1989-10-01), Singh et al.
patent: 5725599 (1998-03-01), Danner et al.
patent: 6663676 (2003-12-01), El A'mma et al.
patent: 1598709 (1981-09-01), None

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