Process for tanning of leather
Bisulfit-blockierte Polyether-modifizierte Polyisocyanate eignen sich in Kombination mit mineralischen Gerbstoffen hervorragend für die Ledergerbung. A tanning process comprises (1) treatment with a compound containing carbamoyl sulphonate groups and (2) treatment at a pH greater than 4 with a miner...
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| creator | REIFF, HELMUT NOVOTNY, FRITZ TRAEUBEL, HARRO |
| description | Bisulfit-blockierte Polyether-modifizierte Polyisocyanate eignen sich in Kombination mit mineralischen Gerbstoffen hervorragend für die Ledergerbung.
A tanning process comprises (1) treatment with a compound containing carbamoyl sulphonate groups and (2) treatment at a pH greater than 4 with a mineral tanning agent chosen from chromium (III), iron (II) or (III), aluminium (III), titanium (IV) or zirconium (IV) compounds, without the use of a pickling agent. The compound used in step (1) is a reaction product of the following components : (A) an organic polyisocyanate ; (B) 0.01-0.4 equivalents per isocyanate group in (A) of a polyether alcohol containing polyalkylene oxide groups, of which 40-100 mol.% are polyethylene oxide units with a sequence length of 5-70 (the equivalents are based on the hydroxyl groups in the alcohol) ; (C) optional further components which can react with isocyanate groups ; and (D) ammonium or alkali bi- or di-sulphites. |
| format | Patent |
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A tanning process comprises (1) treatment with a compound containing carbamoyl sulphonate groups and (2) treatment at a pH greater than 4 with a mineral tanning agent chosen from chromium (III), iron (II) or (III), aluminium (III), titanium (IV) or zirconium (IV) compounds, without the use of a pickling agent. The compound used in step (1) is a reaction product of the following components : (A) an organic polyisocyanate ; (B) 0.01-0.4 equivalents per isocyanate group in (A) of a polyether alcohol containing polyalkylene oxide groups, of which 40-100 mol.% are polyethylene oxide units with a sequence length of 5-70 (the equivalents are based on the hydroxyl groups in the alcohol) ; (C) optional further components which can react with isocyanate groups ; and (D) ammonium or alkali bi- or di-sulphites.</description><edition>6</edition><language>eng ; fre ; ger</language><subject>APPARATUS THEREFOR ; CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING ; CHEMISTRY ; COMPOSITIONS FOR TANNING ; HIDES ; LEATHER ; METALLURGY ; PELTS ; SKINS</subject><creationdate>1997</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19971229&DB=EPODOC&CC=EP&NR=0814168A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19971229&DB=EPODOC&CC=EP&NR=0814168A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>REIFF, HELMUT</creatorcontrib><creatorcontrib>NOVOTNY, FRITZ</creatorcontrib><creatorcontrib>TRAEUBEL, HARRO</creatorcontrib><title>Process for tanning of leather</title><description>Bisulfit-blockierte Polyether-modifizierte Polyisocyanate eignen sich in Kombination mit mineralischen Gerbstoffen hervorragend für die Ledergerbung.
A tanning process comprises (1) treatment with a compound containing carbamoyl sulphonate groups and (2) treatment at a pH greater than 4 with a mineral tanning agent chosen from chromium (III), iron (II) or (III), aluminium (III), titanium (IV) or zirconium (IV) compounds, without the use of a pickling agent. The compound used in step (1) is a reaction product of the following components : (A) an organic polyisocyanate ; (B) 0.01-0.4 equivalents per isocyanate group in (A) of a polyether alcohol containing polyalkylene oxide groups, of which 40-100 mol.% are polyethylene oxide units with a sequence length of 5-70 (the equivalents are based on the hydroxyl groups in the alcohol) ; (C) optional further components which can react with isocyanate groups ; and (D) ammonium or alkali bi- or di-sulphites.</description><subject>APPARATUS THEREFOR</subject><subject>CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS FOR TANNING</subject><subject>HIDES</subject><subject>LEATHER</subject><subject>METALLURGY</subject><subject>PELTS</subject><subject>SKINS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJALKMpPTi0uVkjLL1IoSczLy8xLV8hPU8hJTSzJSC3iYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgEGFoYmhmYWjobGRCgBAKOpI_Q</recordid><startdate>19971229</startdate><enddate>19971229</enddate><creator>REIFF, HELMUT</creator><creator>NOVOTNY, FRITZ</creator><creator>TRAEUBEL, HARRO</creator><scope>EVB</scope></search><sort><creationdate>19971229</creationdate><title>Process for tanning of leather</title><author>REIFF, HELMUT ; NOVOTNY, FRITZ ; TRAEUBEL, HARRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0814168A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1997</creationdate><topic>APPARATUS THEREFOR</topic><topic>CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS FOR TANNING</topic><topic>HIDES</topic><topic>LEATHER</topic><topic>METALLURGY</topic><topic>PELTS</topic><topic>SKINS</topic><toplevel>online_resources</toplevel><creatorcontrib>REIFF, HELMUT</creatorcontrib><creatorcontrib>NOVOTNY, FRITZ</creatorcontrib><creatorcontrib>TRAEUBEL, HARRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>REIFF, HELMUT</au><au>NOVOTNY, FRITZ</au><au>TRAEUBEL, HARRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for tanning of leather</title><date>1997-12-29</date><risdate>1997</risdate><abstract>Bisulfit-blockierte Polyether-modifizierte Polyisocyanate eignen sich in Kombination mit mineralischen Gerbstoffen hervorragend für die Ledergerbung.
A tanning process comprises (1) treatment with a compound containing carbamoyl sulphonate groups and (2) treatment at a pH greater than 4 with a mineral tanning agent chosen from chromium (III), iron (II) or (III), aluminium (III), titanium (IV) or zirconium (IV) compounds, without the use of a pickling agent. The compound used in step (1) is a reaction product of the following components : (A) an organic polyisocyanate ; (B) 0.01-0.4 equivalents per isocyanate group in (A) of a polyether alcohol containing polyalkylene oxide groups, of which 40-100 mol.% are polyethylene oxide units with a sequence length of 5-70 (the equivalents are based on the hydroxyl groups in the alcohol) ; (C) optional further components which can react with isocyanate groups ; and (D) ammonium or alkali bi- or di-sulphites.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | APPARATUS THEREFOR CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING CHEMISTRY COMPOSITIONS FOR TANNING HIDES LEATHER METALLURGY PELTS SKINS |
| title | Process for tanning of leather |
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