Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1996-10-30
1998-09-15
Diamond, Alan
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 9222, 8 9423, 252 857, 427389, 428473, C14C 1100
Patent
active
058074090
ABSTRACT:
The present invention provides for a method of improving the pull-up characteristic of a leather substrate darkened with a finishing oil modified by dissolving a modifier in a conventional finishing oil. The modifier may be polymerized from a monomer mix of alkyl acrylates and alkyl methacrylates. Improved pull-up characteristic of a leather substrate is esthetically very appealing and is highly desired by a consumer. The modifier of the present invention increases the viscosity of the finishing oil, thereby extending the open time, which is a time duration during which the oil applied over the leather substrate surface stays on the surface. Increased open time permits a manufacturer to spread the oil over more area of the leather substrate than conventional unmodified finishing oils, without substantially affecting the pull-up characteristic of a leather substrate darkened with the finishing oil.
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"The Characterization of Polymers", Rohm and Haas Co., Phila., PA., CM-106 Sep. 1976, pp. 4,6,7.
"Fatliquors and Fatliquoring of Leather", Samir Das Gupta, Atlas Refinery, Inc., Newark, NJ, pp. 1-23. (Date Unknown).
"Pocket Book for the Leather Technologist", BASF Aktiengesellschaft, D-6700, Ludwigshafen, Germany, pp. 139-151. (Date Unknown).
Gore Robert Howard
Hawthorn John
Moore John Shaftoe
Deshmukh Sudhir G.
Diamond Alan
Rohm and Haas Company
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