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"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7300599 | Lubricant for the production and treatment of leather Fatliquoring agents for the production and/or for the treatment of leather comprising (A) at least one natural lipoid; (B) at least one polymer based on the monomers acrylic acid and/or methacrylic acid; (C) an emulsifier compo... | 11/27/2007 |
| 7208016 | Chromium-free, waterproof leather Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338 , of at least 30 min. ... | 04/24/2007 |
| 7066852 | Game ball with improved moisture resistance A game ball having improved resistance to liquid moisture, wherein the game ball includes a water resistant lining and a leather cover with water resistance properties. The water resistance properties of the cover are imparted by the tanning process and the lining i... | 06/27/2006 |
| 7060363 | Chromium-free, waterproof leather Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338, of at least 30 min. ... | 06/13/2006 |
| 6946541 | Composition based on renewable raw materials The present invention relates to a composition based on renewable raw materials which is particularly characterized by containing at least one tin-containing compound, an article made thereof as well as a process for the preparation of such an article. The compositi... | 09/20/2005 |
| 6685746 | Impregnation of leather with micro-encapsulated material A material is impregnated into leather by incorporating the material into micro-capsules and then applying said micro-capsules to said leather material by means of a suitable process. A roller coating process is described in which the material is applied ... | 02/03/2004 |
| 6395040 | Process for producing leather A method for producing leather generally including the steps of: (a) providing wet blue, full grain skins, (b) applying a liquid chrome solution to the skins while at a pH of 3.5 or lower, (c) raising the pH level of the skins to at least approximately 6.... | 05/28/2002 |
| 6133372 | Aqueous polymer dispersion, process for preparing the same and its use in leather production Aqueous polymer dispersions are produced by polymerizing monoethylenically unsaturated monomers bearing acid groups in an acid, partially or totally neutralized form, optionally with other monomers that can be copolymnerized therewith in the presence of h... | 10/17/2000 |
| 6110230 | Use of carboxyamide-polysiloxanes for water proofing leather Specific carboxyamide-polysiloxanes of the formula IV ##STR1## or the formula IVa ##STR2## having a carboxyl content of from 0.02 to 1.0 mmol/g and an average molar mass (number average) [Mn ] in the range from 2×103 to ... | 08/29/2000 |
| 6033590 | Compositions for the preparation of leather Compositions for the simultaneous retanning and fatliquoring of leather are described which may include further leather treatment agents as well.... | 03/07/2000 |
| 5985167 | Wet treatment of leather hides Wet leather treating compositions and methods of wet treating leather hides employing alkylpolyglycosides for enhancing the penetration and absorption of the leather treatment formulations in an environmentally safe manner. The compositions are substantia... | 11/16/1999 |
| 5980578 | Process for waterproofing leather at low pH-values and leathers manufactured thereby The present invention relates to a process for waterproofing leathers, furs and other fibrous materials wherein waterproofing is carried out with conventional water repellents in the presence of dispersing or stabilizing auxiliary agents at pH-values of 3... | 11/09/1999 |
| 5972037 | Leather tanning processes and the products thereof The production of household-machine washable and dryable, waterproof, nonflammable, and extremely colorfast leathers from wet blue hides by a process which has the advantage that significantly reduced volumes of toxic wastes are generated. The wet blue hi... | 10/26/1999 |
| 5914442 | Aqueous solutions or dispersions of copolymers Aqueous solution or aqueous dispersion of copolymers suitable for the fatliquoring and filling of leather and fur skins are obtained by free-radical copolymerization of A1) C6 -C40 -monoolefins or C6 -C40 ... | 06/22/1999 |
| 5853427 | Use of polymerizable oil for leather fatliquor Novel fatliquoring compositions used for treating mineral-tanned leathers are effective substitutes for oils which have conventionally been used to soften leather. The compositions comprise monomers which polymerize in situ and soften the leather by break... | 12/29/1998 |
| 5820633 | Method of treating leather with improved retaining agents The present invention is directed to a method of treating tanned leather to improve its dyeing characteristics while still retaining desired grain break and grain strength. The tanned leather is contacted, preferably by immersion, in a float containing a ... | 10/13/1998 |
| 5807409 | Method of improving pull-up characteristic of leather substrate and modified finishing oil used therein 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 ... | 09/15/1998 |
| 5770264 | Anionically modified polyurethane ureas having reduced tackiness for the coating of leather This invention relates to a method for coating leather with an anionically modified polyurethane urea prepared by (1) reacting (A) an aromatic diisocyanate, (B) a polyether polyol having a number average molecular weight greater than 1500, (C) at least one com... | 06/23/1998 |
| 5741434 | Leather oiling preparations and their use The present invention relates to the use of water-dispersible and/or water-emulsifiable amphiphilic co-oligomer of fatty crotonates and radical-copolymerizable hydrophilic ethylenically unsaturated acids and/or anhydrides thereof which may also contain sm... | 04/21/1998 |
| 5733340 | Aqueous composition for the pretanning of hide pelts or retanning of leather An aqueous composition for the pretanning of hide pelts or for the retanning of leather comprises (A) an aliphatic dialdehyde containing 2 to 8 carbon atoms, (B) an anionic aromatic tanning agent, (C) water and, if desired, (D) an acid. The leather tanned... | 03/31/1998 |
| 5728313 | Leather oiling compositions and their use A method for oiling leather and skins by impregnating the leather and skins with partial esters of cyclic polycarboxylic acids or (partial) anhydrides with monofunctional fatty alcohols and optionally fixing the partial esters in the leather. Aqueous disp... | 03/17/1998 |
| 5716676 | Aqueous coating compositions and their use for the preparation of coatings that are permeable to water vapor The invention relates to the use of coating compositions to prepare coatings having water vapor permeabilities of at least 2500 g/m2 per day (DS 2109 TM1 method) containing (A) a polyurethane containing (1) 0.1 to 75 meq/100 g of ionic groups and ... | 02/10/1998 |
| 5709714 | Method of treating leather with amphoteric polymers The present invention is directed to a method of treating tanned leather stock to improve its color expression characteristics. The method provides for utilizing a two-stage amphoteric polymers, which improve the color expression characteristic of the tan... | 01/20/1998 |
| 5702490 | Water repellent treatment of leather and skins with polysiloxanes functionalized with carboxyl groups in a comb-like manner Leather and skins are water repellent in aqueous emulsion in the presence of emulsifiers with polysiloxanes which are functionalized with carboxyl groups in a comb-like manner and in which the carboxyl groups are bonded to the polymer main chain via space... | 12/30/1997 |
| 5685880 | Leather modifier, process for modifying leather and modified tanned leather A leather modifier containing a compound which is obtainable through a reaction of an ethylene oxide derivative having a fluorine-containing group with a phosphorus compound is disclosed. A leather treated with the modifier has much improved properties.... | 11/11/1997 |
| 5683611 | Preparations for the oiling of leather Aqueous dispersions containing special aminopropionic acid derivatives and co-oligomers based on fatty crotonates are suitable for the oiling of leather. The leathers thus treated are distinguished by high resistance to washing and cleaning and by imperme... | 11/04/1997 |
| 5660759 | Cationic formulations for oiling leathers and skins The process of oiling leathers and furs by contacting the leathers and furs with an oiling composition containing esterquats corresponding to formula (I): ##STR1## in which R1 CO is an acyl radical containing 6 to 22 carbon atoms, R | 08/26/1997 |
| 5634948 | Low-fogging finish treatment for upholstery leather, and method A method of imparting low fogging characteristics to tanned leather, which includes the step of treating the leather in an aqueous emulsion including an effective quantity of an oil having less than 3 percent of fatty acid components of less than C-16, th... | 06/03/1997 |
| 5620748 | Use of graft polymers for fatliquoring and filling leather and fur skins Soft leathers with a pleasant hand are obtained on fatliquoring and filling leather and fur skins with water-soluble or water-dispersible graft polymers of vegetable and animal oils, obtainable by radically initiated polymerization A) of a monomer or mono... | 04/15/1997 |
| 5567343 | New leather oiling preparations and their use An aqueous dispersion of amphiphilic co-oligomers for oiling leather or skins wherein the dispersion contains co-oligomers of (a) fatty crotonates, (b) radical-copolymerizable, hydrophilic, ethylenically unsaturated acids, anhydrides and mixtures thereof, wher... | 10/22/1996 |
| 5567205 | Wet treatment of leather hides Wet leather treating compositions and methods of wet treating leather hides employing alkylpolyglycosides for enhancing the penetration and absorption of the leather treatment formulations in an environmentally safe manner. The compositions are substantia... | 10/22/1996 |
| 5558675 | Process for aftertreating tanned leather and pelts A process for aftertreating tanned leather and pelts to impart a very soft and supple handle and good fullness to them, which comprises subjecting the leather or pelts to an aftertreatment with a polymer which is obtainable by (a) polymerising a monoethyl... | 09/24/1996 |
| 5554306 | Sulfited fatty compounds with a reduced content of free hydrogen sulfite Sulfited fatty compounds having a reduced content of free hydrogen sulfite are prepared by blowing unsaturated fatty compounds in an oxygen atmosphere at 100° C. to 150° C., sulfiting the blown fatty compounds with sodium metabisulfite, and subsequently... | 09/10/1996 |
| 5529704 | Leather fat-liquoring agents The present invention relates to a process for the preparation of a fat-liquoring compositions based on oxysulfited oils of animal and/or vegetable origin, the fatty substances employed containing a) 70-99% by weight of fatty substances of animal and/or vegeta... | 06/25/1996 |
| 5527360 | Fatliquoring, filling and hydrophobicizing leathers and furs A process for fatliquoring, filling and hydrophobicizing leathers and furs, comprises using ene adducts of maleic anhydride with unsaturated fatty acids of from 12 to 24 carbon atoms or their C1 - to C20 -alkyl or C2 - to ... | 06/18/1996 |
| 5525120 | Degreasing process The invention is a process for degreasing animal skins in which the animal skin to be degreased is contacted with a mixture of a predominantly saturated C12 -C18 fatty alcohol ethoxylate having an average of not more than 15 EO group... | 06/11/1996 |
| 5503754 | Wet treatment of leather hides Wet leather treating compositions and methods of wet treating leather hides employing alkylpolyglycosides for enhancing the penetration and absorption of the leather treatment formulations in an environmentally safe manner. The compositions are substantia... | 04/02/1996 |
| 5501707 | Aqueous dispersions of new amphiphilic co-oligomers for the washing- and cleaning-resistant oiling of leather and skins and their use The invention is a process for oiling of leather and skins which imparts washing and dry-cleaning resistance to the treated leather and skins and a composition useful in the process. The washing and dry-cleaning resistance of leather is improved by impreg... | 03/26/1996 |
| 5489389 | New leather oiling preparations and their use An aqueous dispersion of amphiphilic oligomers for oiling leather or skins wherein the dispersion contains anionically modified urethane fatty oligomers containing long-chain hydrocarbon fatty groups containing from 8 to 40 carbon atoms, together with sal... | 02/06/1996 |
| 5476517 | Use of guerbet alcohols for preventing fatty spew on leather The present invention relates to a composition and process for inhibiting fatty spew on leather comprising an oiling component in combination with a Guerbet alcohol having the general formula I: R1 --CH(CH2 OH)--R2 ... | 12/19/1995 |
