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1. (WO2019048480) A METHOD FOR MANUFACTURING A LIGNIN-MODIFIED POLYPHENOLIC PRODUCT AND ITS USE FOR THE TREATMENT OF LEATHER AND SKIN
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Pub. No.: WO/2019/048480 International Application No.: PCT/EP2018/073873
Publication Date: 14.03.2019 International Filing Date: 05.09.2018
IPC:
C08G 16/02 (2006.01) ,C08G 14/08 (2006.01) ,C14C 3/24 (2006.01) ,C14C 3/20 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
16
Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/-C08G14/143
02
of aldehydes
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
14
Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/-C08G12/168
02
of aldehydes
04
with phenols
06
and monomers containing hydrogen attached to nitrogen
067
Acyclic or carbocyclic monomers
08
Ureas; Thioureas
C CHEMISTRY; METALLURGY
14
SKINS; HIDES; PELTS; LEATHER
C
TREATING SKINS, HIDES OR LEATHER WITH CHEMICALS, ENZYMES OR MICRO-ORGANISMS, e.g. TANNING, IMPREGNATING OR FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
3
Tanning; Compositions for tanning
02
Chemical tanning
08
by organic agents
24
using lignin derivatives, e.g. sulfate liquor
C CHEMISTRY; METALLURGY
14
SKINS; HIDES; PELTS; LEATHER
C
TREATING SKINS, HIDES OR LEATHER WITH CHEMICALS, ENZYMES OR MICRO-ORGANISMS, e.g. TANNING, IMPREGNATING OR FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
3
Tanning; Compositions for tanning
02
Chemical tanning
08
by organic agents
18
using polycondensation products or precursors thereof
20
sulfonated
Applicants:
EXPLOITATIEMAATSCHAPPIJ SMIT-VECHT B.V. [NL/NL]; Nijverheidslaan 48 1382 LK Weesp, NL
Inventors:
MA, Yujie; NL
BERENDS, Petra Conny; NL
Agent:
PLAGGENBORG, Menko Bernard; NL
Priority Data:
17189682.206.09.2017EP
Title (EN) A METHOD FOR MANUFACTURING A LIGNIN-MODIFIED POLYPHENOLIC PRODUCT AND ITS USE FOR THE TREATMENT OF LEATHER AND SKIN
(FR) PROCÉDÉ DE FABRICATION D'UN PRODUIT POLYPHÉNOLIQUE MODIFIÉ PAR DE LA LIGNINE ET SON UTILISATION POUR LE TRAITEMENT DU CUIR ET DE LA PEAU
Abstract:
(EN) The invention relates to a method for manufacturing a lignin- modified polyphenolic product to be used in the treatment of leather or skin, comprising the steps of: [1] reacting a hydroxybenzene compound, optionally in a mixture comprising lignin,with sulphuric acid and [2] diluting the reaction mixture with water; wherein the method further comprises either: [3a] adding urea to the reaction mixture obtained in step [2], [4a] if the mixture of step [1] does not comprise lignin, adding water insoluble lignin to the mixture obtained in step [3a], and [5a] performing a condensation reaction by adding formaldehyde or glyoxylic acid or glyoxal or a combination of different aldehydes as aldehyde to obtain a water soluble hydroxybenzene-lignin-aldehyde polymer-based product, or [4b] if the mixture of step [1] does not comprise lignin, adding water insoluble lignin to the reaction mixture obtained in step [2], and [5b] performing a condensation reaction by adding glyoxylic acid or glyoxal or a combination of glyoxylic acid and glyoxal as aldehyde to obtain a water soluble hydroxybenzene-lignin-aldehyde polymer-based product.
(FR) L'invention concerne un procédé de fabrication d'un produit polyphénolique modifié par de la lignine destiné à être utilisé dans le traitement du cuir ou de la peau, comprenant les étapes consistant à : [1] faire réagir un composé d'hydroxybenzène, en option dans un mélange comprenant de la lignine, avec de l'acide sulfurique et [2] diluer le mélange de la réaction avec de l'eau. Le procédé consiste en outre soit à : [3a] ajouter de l'urée au mélange de la réaction obtenu à l'étape [2], [4a] si le mélange de l'étape [1] ne comprend pas de lignine, ajouter de la lignine non soluble dans l'eau au mélange obtenu à l'étape [3a], et [5a] réaliser une réaction de condensation par addition de formaldéhyde ou d'acide glyoxylique ou de glyoxal ou d'une combinaison de différents aldéhydes en tant qu'aldéhyde pour obtenir un produit à base de polymère hydroxybenzène-lignine-aldéhyde soluble dans l'eau, soit à, [4b] si le mélange de l'étape [1] ne comprend pas de lignine, ajouter de la lignine non soluble dans l'eau au mélange de la réaction obtenu à l'étape [2], et [5b] réaliser une réaction de condensation en ajoutant de l'acide glyoxylique ou du glyoxal ou une combinaison d'acide glyoxylique et de glyoxal en tant qu'aldéhyde pour obtenir un produit à base de polymère hydroxybenzène-lignine-aldéhyde soluble dans l'eau.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)