Compositions – Leather or fur treating
Patent
1983-12-21
1986-04-22
Willis, Prince E.
Compositions
Leather or fur treating
252 85A, 2523157, 423625, 423626, 423629, C09K 704, C01F 702
Patent
active
045841080
ABSTRACT:
An alpha alumina monohydrate, AlO(OH), gel is produced which is capable of readily dispersing in aqueous solutions to yield a shear-rate thinning mixture. The alpha alumina monohydrate is made by reacting an acid reactant and a base reactant, wherein at least one contains aluminum, in an aqueous medium in proportions to yield a mixture having a pH of from about 7.5 to 10. The gel is treated to remove much of the by-product salts. One preferred method involves filtering the reaction product to remove the by-product salts and then further washing the filter cake with water. Upon dispersing the filter cake in water it yields a shear-rate thinning liquid having increased viscosifying power per unit weight of the AlO(OH) and this is measured as a higher K value in the rheological power model.
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Cabic Edward J.
W. R. Grace & Co.
Willis Prince E.
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