Finishing process
AssigneeSandoz Ltd.
InventorGordon H. Lister
Life of this patent
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Abstract
A finishing process for porous fibrous materials, especially for textiles, especially a dyeing process, in the presence of relatively small amounts of water and a foaming agent, is carried out at a liquor to material ratio of about 0.25:1 to 5:1. This water-saving finishing process leads to equal and level finishings especially important in the dyeing area.
Claims22
A process for finishing a porous material which comprises the steps of (1) contacting the material with a liquor comprising a finishing agent, water and a foaming agent compatible with said finishing agent, at a liquor to material ratio of from 0.25:1 to 5:1, in a manner such that the liquor is not evenly distributed through the material, (2) subjecting the thus treated material to repeated mechanical action under conditions at which the finishing agent is substantially non-substantive to the material, whereby the liquor applied in step (1) becomes substantially uniformly distributed throughout the material, and (3) submitting said material to conditions to effect finishing thereof by said finishing agent.
Dependencies are inferred from the claim text.