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| Number | Title | Issue Date |
| 5873908 | Alkoxy group containing copolymers and their use in retanning leather The present invention relates to alkoxy-groups-containing copolymers of a) 1 to 99%-wt. water soluble ethylenically unsaturated, acid-groups-containing monomers, b) 1 to 50%-wt. monomers having a polyalkoxy sequence and c) 0 to 60%-wt. water soluble monom... | 02/23/1999 |
| 5817428 | Process for formation of epoxy resin/hide composite materials and materials obtained A process for the formation of epoxy resin/hide composite materials is provided in which the components of epoxy resin systems (epoxy resin and hardener) are mixed at a temperature lower than that at which significant reaction between these reagents occur... | 10/06/1998 |
| 5725599 | Process for mineral tanning, re-tanning or leather after-treatment A process for the production of mineral tanned or/and re-tanned or/and after-treated leather or pelt, wherein before the mineral tanning, directly after the mineral tanning, directly before the mineral re-tanning, after the mineral re-tanning or/and with ... | 03/10/1998 |
| 5714560 | Water-soluble or water-dispersible graft polymers of proteins as leather tanning agents Water-soluble or water-dispersible graft polymers which are obtainable by free-radical-initiated polymerization of (A) a monomer or monomer mixture comprising (a) from 20 to 100% by weight of acrylic acid or methacrylic acid or a mixture thereof or alkali meta... | 02/03/1998 |
| 5618317 | Bisulfite-blocked polyisocyanates as tanning agents The present invention relates to tanning agents containing carbamoyl sulfonate groups that are prepared by the reaction of (A) organic polyisocyanates, (B) 0.01 to 0.4 equivalents, relative to the isocyanate groups of polyisocyanate (A), of polyether alcohols ... | 04/08/1997 |
| 4334876 | Process for producing leather This invention relates to an improved process for producing a tanned heavy leather, sometimes called full thickness leather, suitable for use for shoe soles, belts and straps, bags and cases, and saddles, bridles, and harness, wherein, under carefully con... | 06/15/1982 |
| 4314802 | Process for producing leather This invention relates to an improved process for producing a tanned heavy leather, sometimes called full thickness leather, suitable for use for shoe soles, belts and straps, bags and cases, and saddles, bridles, and harness, wherein, under carefully con... | 02/09/1982 |
| 4314800 | Method for treating pelts and leather What is disclosed are a method for treating pelts or leather in the beamhouse, for tanning, or as an aftertreatment, which method comprises contacting said pelts or leather with an aqueous solution or dispersion of a copolymer comprising monomers of a nit... | 02/09/1982 |
| 4239492 | Method of preparing vascular grafts of human and other umbilical cord origins for tissue ingrowth A method for preparing human and other animal umbilical cords for use as a vascular replacement and/or arterial venous fistula which permits the umbilical cord which is to be grafted to be preformed into a desired predetermined configuration. The method i... | 12/16/1980 |
| 4106898 | Leather tanning with oligourethanes This invention is concerned with a method of tanning or retanning leather or pelts by treating them with an aqueous liquor containing hydrophilic oligourethanes. The oligourethanes have a molecular weight of from 300 to 20,000 and they may be methylolated... | 08/15/1978 |
