Zeolite particles
AssigneesPQ Silicas UK Limited, Pq Silicas BV
InventorsSimon Stebbing, Roger Janssen, Moses Rathbun
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Abstract
Described is a method of manufacturing zeolite particles comprising a C1-C4 carboxylate suitable for use in leather tanning, the method comprising the steps of (i) contacting a zeolite particle slurry with a C1-C4 carboxylic acid to increase the acidity of the zeolite particles; and (ii) removing liquid from the slurry to obtain the zeolite particles comprising the C1-C4 carboxylate. Zeolite particles suitable for use in leather tanning, and methods of manufacturing a tanning composition using zeolite particles comprising a C1-C4 carboxylate, are also described.
Claims27
A method of manufacturing zeolite particles comprising a C1-C4 carboxylate suitable for use in leather tanning, the method comprising the steps of:
- (i) contacting a zeolite particle slurry with a C1-C4 carboxylic acid to increase the acidity of the zeolite particles;
- and
- (ii) removing liquid from the slurry to obtain the zeolite particles comprising the C1-C4 carboxylate.
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Zeolite particles suitable for use in leather tanning, wherein the zeolite particles have an acidity such that 1 g of the zeolite particles on a dry mass basis dispersed in 99 g of deionised water at 20° C. and atmospheric pressure exhibits a pH of from 5 to 8, wherein the zeolite particles comprise a C1-C4 carboxylate, and wherein at least 90% by weight of the zeolite particles have a particle diameter of 50 μm or less.
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Dependencies are inferred from the claim text.