Abrégé

This aqueous polyurethane resin composition comprises an aqueous polyurethane resin obtained by extending, with (D) a polyamine having two or more amino groups and/or imino groups in one molecule, a chain of a neutralized product of an isocyanate group-terminated prepolymer that is a reaction product of (A) a polyisocyanate, (B) a polyol, and (C) a diol having a carboxy group and/or a carboxylate group, wherein the polyisocyanate (A) includes (a-1) isophorone diisocyanate and (a-2) hexamethylene diisocyanate; and the polyamine (D) includes at least one selected from the group consisting of (d-1) piperazine and (d-2) dibasic acid dihydrazides.

Classes IPC  ?

• C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
• C08G 18/00 - Polymérisats d'isocyanates ou d'isothiocyanates
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08G 18/66 - Composés des groupes , ou
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates

Abrégé

An aqueous polyurethane resin composition including: an aqueous polyurethane resin which is a chain-extended product obtained from a neutralized product of an isocyanate-terminated prepolymer which is a reaction product of (A) a polyisocyanate, (B) polyols, and (C) a diol having a carboxy group and/or a carboxylate group, by using (D) a polyamine having two or more amino groups and/or imino groups in one molecule, wherein (B) the polyols contain (b-1) a polypropylene glycol having a number average molecular weight of 600 to 10,000 and (b-2) a polytetramethylene glycol having a number average molecular weight of 1,000 to 4,000, a total amount of (b-1) the polypropylene glycol and (b-2) the polytetramethylene glycol accounts for 50% by mass or more of an entire amount of (B) the polyols, and a mass ratio between (b-1) the polypropylene glycol and (b-2) the polytetramethylene glycol is (b-1):(b-2)=0.5:99.5 to 60:40.

Classes IPC  ?

• C08L 75/12 - Polyuréthanes à partir de composés contenant de l'azote et un hydrogène actif, l'atome d'azote ne faisant pas partie du groupe isocyanate
• C08K 5/29 - Composés contenant des liaisons doubles carbone-azote
• C08G 18/08 - Procédés de préparation
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08G 18/48 - Polyéthers
• C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle

Abrégé

An aqueous polyurethane resin composition contains an aqueous polyurethane resin that is a chain elongation product, elongated by (D) a polyamine having two or more amino groups and/or imino groups in a molecule, of a neutralized product of an isocyanate group-terminated prepolymer that is a reaction product of (A) a polyisocyanate, (B) a polyol, and (C) a diol having a carboxy group and/or a carboxylate group. The (B) polyol includes (b-1) a polypropylene glycol having a number average molecular weight of 600-10,000 and (b-2) a polytetramethylene glycol having a number average molecular weight of 1000-4000. The total amount of the (b-1) polypropylene glycol and the (b-2) polytetramethylene glycol relative to the total amount of the (B) polyol is 50 mass% or above. The mass ratio between the (b-1) polypropylene glycol and the (b-2) polytetramethylene glycol is (b-1):(b-2) = 0.5:99.5 to 60:40.

Classes IPC  ?

• C08G 18/08 - Procédés de préparation
• C08G 18/00 - Polymérisats d'isocyanates ou d'isothiocyanates
• C08G 18/12 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle utilisant plusieurs composés contenant un hydrogène actif dans le premier stade de la polymérisation
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08G 18/48 - Polyéthers
• C08G 18/66 - Composés des groupes , ou
• C08J 5/18 - Fabrication de bandes ou de feuilles
• C08L 75/12 - Polyuréthanes à partir de composés contenant de l'azote et un hydrogène actif, l'atome d'azote ne faisant pas partie du groupe isocyanate

Abrégé

Provided are: a liquid reducing agent composition that has advantages of reducing sugars such as less decrease of reducing power over time, less odor, and minor impact on the human body and the environment, and can further have good robustness; and a method for reducing and washing a substrate. In one embodiment, provided is a liquid reducing agent composition containing: (A) a reducing sugar; (B) an amphiphilic component that is at least one compound selected from the group consisting of (B1) polyester resins having an aromatic carbon ring, and (B2) compounds represented by general formula (1); and water. In one embodiment, provided is a method for reducing and washing a substrate, the method comprising washing a substrate in the presence of (A) a reducing sugar, and (B) an amphiphilic component that is at least one compound selected from the group consisting of (B1) polyester resins having an aromatic carbon ring, and (B2) compounds represented by general formula (1).

Classes IPC  ?

• D06P 3/54 - Polyesters utilisant des colorants en dispersion
• D06L 4/30 - Blanchiment des fibres, filaments, fils, filés, tissus, plumes ou articles fibreuxBlanchiment du cuir ou des fourrures utilisant des agents réducteurs
• D06P 5/04 - Post-traitement avec des composés organiques
• D06P 5/08 - Post-traitement avec des composés organiques macromoléculaires