Abstract:
Compositions, containing the following components a) at least two alkoxylated alcohols, b) at least one hydrophobic component, selected from natural, modified natural and synthetic hydrophobic substances, c) at least 20 % water by weight in relation to the overall weight of the composition, characterized in that the compositions have an average hydrodynamic radius ranging from 1 to 200 nm, determined by dynamic light scattering.
Abstract:
The invention relates to complex mixtures of semi-esters from polybasic organic acids and long-chain alkanols, alkoxyalkanols and diols, especially viscous oils stemming from oxosynthesis. The invention further relates to the production and the use thereof as inexpensive, highly effective emulsifiers, and especially as processing agents in leather manufacture.
Abstract:
Leathers and pelts are water-proofed in an aqueous emulsion in the presence of emulsifiers by comb-like carboxylated polysiloxanes in which the carboxyl groups are linked to the main polymer chain by spacer groups in the form of linear or branched C2- to C40-alkylene groups that may be separated by up to 8 non-adjacent oxygen atoms or groups having the formulas -NR -, CO- or -CO-NR and that may additionally bear up to 5 carboxyl groups or carboxylic acid amide groups having the formula -CO-NR R in which the residues R and R stand for hydrogen or C1- to C4-alkyl. The spacer groups are linked to the main polymer chain by a direct bond, an oxygen atom or a group having the formulas -NR -, -CO-, -CO-NR - or -CO-O-.
Abstract:
Producing aqueous copolymer dispersions with a water content of 30-99.5 wt.% comprises radical copolymerization of an ethylenically unsaturated dicarboxylic acid anhydride having 4-8 carbon atoms, an oligomer of an alkene having 3-10 carbon atoms and optionally an ethylenically unsaturated comonomer, optionally reacting the product with an alkoxylated alcohol (Ia) or alkoxylated amine (Ib), and adding water. Producing aqueous copolymer dispersions with a water content of 30-99.5 wt.% comprises radical copolymerization of an ethylenically unsaturated dicarboxylic acid anhydride having 4-8 carbon atoms, an oligomer of an alkene having 3-10 carbon atoms, where the oligomer has a molecular weight of 300-5000 or is produced by oligomerising at least 3 equivalents of the alkene, and optionally an ethylenically unsaturated comonomer, optionally reacting the product with an alkoxylated alcohol of formula (Ia) or alkoxylated amine of formula (Ib), and adding water. HO(A 1>O) nR 1> (Ia) H 2N(A 1>O) nR 1> (Ib) A 1>2-20C alkylene; R 1>1-30C alkyl, phenyl or H; n : 1-200. Independent claims are also included for: (1) aqueous copolymer dispersions produced as above; (2) treatment of fibrous substrates using the dispersions; (3) fibrous substrates treated as above; (4) copolymers produced by radical copolymerization of an anhydride, oligomer and optional comonomer as above, reaction with (Ia) or (Ib) and optional hydrolysis; (5) impregnating flat substrates with dispersions or copolymers as above.
Abstract:
Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of(a) from 20 to 90% by weight of at least one monoethylenically unsaturated C4-6-dicarboxylic acid or the anhydride thereof, as component A,(b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B,(c) from 5 to 50% by weight of at least one hydrophobic comonomer from the group consisting of long-chain olefins, esters of long-chain alcohols with acrylic acid or methacrylic acid, long-chain amides of acrylic acid or methacrylic acid, and long-chain alkyl vinyl ethers, as component C,(d) from 0 to 40% by weight of further comonomers which can be copolymerized with the above monomers, as component D,where the sum of the amounts of components A, B, C and, if used, D is 100% by weight, followed by at least partial esterification or hydrolysis and neutralization and/or reaction of the carboxyl groups formed during the hydrolysis with bases, for treating leather and/or fur skins.
Abstract:
Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of(a) from 20 to 90% by weight of at least one monoethylenically unsaturated C4-6-dicarboxylic acid or the anhydride thereof, as component A,(b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B,(c) from 5 to 50% by weight of at least one hydrophobic comonomer from the group consisting of long-chain olefins, esters of long-chain alcohols with acrylic acid or methacrylic acid, long-chain amides of acrylic acid or methacrylic acid, and long-chain alkyl vinyl ethers, as component C,(d) from 0 to 40% by weight of further comonomers which can be copolymerized with the above monomers, as component D,where the sum of the amounts of components A, B, C and, if used, D is 100% by weight, followed by at least partial esterification or hydrolysis and neutralization and/or reaction of the carboxyl groups formed during the hydrolysis with bases, for treating leather and/or fur skins.
Abstract:
A process is disclosed for water-proofing leathers and pelts exclusively tanned with tanning polymers and possibly pre-tanned with aldehydes or reactive carbonyl compounds, without vegetable, synthetic and mineral tanning substances. Polysiloxanes are used as water-proofing agents.
Abstract:
Soluciones o dispersiones acuosas de copolimerizados, que se obtienen por copolimerizacion iniciada por radicales libres de A1) 40 hasta 60% en mol de monoolefinas con 6 hasta 40 átomos de carbono o alquil vinil éteres con 6 hasta 40 átomos de carbono o mezclas a partir de alquil vinil éteres con 6 hasta 40átomos de carbono y hasta 50% en mol, con respecto a la cantidad total del componente A1, de monoolefinas con 6 hasta 40 átomos de carbono, con B1) 60 hasta 40% en mol de anhídridos de ácidos dicarboxilicos monoetilénicamente insaturados con 4 hasta 8 átomos de carbono o por copolimerizacion iniciada por radicales libres de A2) 50 hasta 90% en peso de acrilato o metacrilatos de alquilo con 6 hasta 40 átomos de carbono o vinil ésteres de ácidos carboxílicos con 6 hasta 40 átomos de carbono, o mezclas de los mismos, con B2) 10 hasta 50% en peso de ácidos carboxílicos monoetilénicamente insaturados con 3 hasta 12 átomos de carbono, anhídridos de ácidos dicarboxílicos monoetilénicamente insaturados con 4 hasta 12 átomos de carbono, semiésteres o semiamidas de ácidos dicarboxílicos monoetilénicamente insaturados con 4 hasta 12 átomos de carbono, amidas de ácidos carboxílicos monoetilénicamente insaturados con 3 hasta 12 átomos de carbono, o mezclas de los mismos dando copolimerizados con masas molares de 500 hasta 30 000, estando los grupos carboxilo presentes en el medio acuoso al menos parcialmente neutralizados y pudiendo una parte de los grupos carboxilo estar presentes en forma amida, cuyas soluciones o dispersiones acuosas están caracterizadas por contener 0.5 hasta 40% en peso, con respecto a la cantidad de copolimerizado, de emulsionantes. Estas soluciones o dispersiones acuosas son apropiadas para el engrase y relleno de cueros y pieles.