Leather treating process
Patent 3934975 Issued on January 27, 1976. Estimated Expiration Date: 
January 27, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 27, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References2454543 InventorsAssigneeApplicationNo. 05/405113 filed on 10/10/1973US Classes:8/94.24, With aldehyde-aromatic condensation product8/94.1P, Phosphorus compounds on leather8/94.1R, TREATMENT OF HIDES, SKINS, FEATHERS AND ANIMAL TISSUES8/94.21Organic materialExaminersPrimary: Levy, DonaldAttorney, Agent or FirmInternational ClassesC14C 3/00 (20060101)C14C 3/18 (20060101) AbstractLeather treating compositions are prepared which comprise condensed or polymaric alkyl phenol phosphates generally and more particularly an alkylphenol-polyphenol condensate subsequently alkoxylated and phosphated. These compositions may be utilized for leather processing, and specifically for: retanning, lubricating, and imparting water resistance to chrome and/or mineral tanned leather. Additionally, these comprositions may be used to effect modifications of base mineral tannages for the purpose of dyeing, bleaching, and fatliquoring leather. | |
