Process for fleshing skins

• US 5,215,542 A
• Filed: 07/30/1991
• Issued: 06/01/1993
• Est. Priority Date: 08/21/1990
• Status: Expired due to Fees

• Current Assignee: Société Française Hoechst (Sanofi )
• Original Assignee: Société Française Hoechst (Sanofi )
• Inventors: Pore, Jean
• Primary Examiner(s): Willis, Jr., Prince
• Assistant Examiner(s): Diamond, Alan D.
• Application Number:
  US07/737,693
• Time in Patent Office: 672 Days
• Field of Search: 8/94.15
• US Class Current: 8/94.15
• CPC Class Codes: C14B 1/02 Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
• CPC Class Codes: C14C 1/00 Chemical treatment prior to tanning

Abstract

Process for fleshing skin in which skins which are to be fleshed are treated using a silica sol containing preferably from 30 to 50% by weight of silica in a non-agglomerated particle state with an average diameter of 9 to 100 nm then they are subjected to standard fleshing.

Claims

1. Process for fleshing skins comprising the steps of treating said skins with a silica sol and then fleshing said skins.

2. Process for fleshing skins according to claim 1, wherein said silica sol is dispersed in an aqueous solution.

3. Process for fleshing skins according to claim 1, wherein said silica sol comprises 30 to 50% by weight of non-agglomerated particles of silica having an average diameter of from 9 to 100 nanometers, said non-agglomerated particles of silica being suspended within an aqueous solvent.

4. Process for fleshing skins according to claim 1, wherein 0.2 to 3% by weight of said silica sol is used relative to the weight of said skins.

5. Process for fleshing skins according to claim 1, wherein said silica sol comprises non-agglomerated particles of silica having an average diameter of from 9 to 50 nanometers.