摘要:
The invention relates to a mixture comprising i) at least one condensation product (A) obtainable by reaction of a1) at least one aromatic system or heteroaromatic system, a2) at least one carbonyl compound, a3) if appropriate at least one sulfonating agent and a4) if appropriate at least one urea derivative, where the condensation product (A) has an Mw value ≧9000 g/mol, and ii) at least one tanning agent having an Mw value ≦3000 g/mol.
摘要:
A process for the production of leather using one or more reaction products of(a) triamines or higher amines with (b) at least one compound of the general formula I A1-R1 I where R1 is selected from hydrocarbon radicals having 10 to 5000 carbon atoms, straight-chain or branched, saturated or having from one to three C—C double bonds, and A1 from groups capable of reacting with amines.
摘要:
A process for the production of leather using one or more reaction products of (a) triamines or higher amines with (b) at least one compound of the general formula I A1-R1 I where R1 is selected from hydrocarbon radicals having 10 to 5000 carbon atoms, straight-chain or branched, saturated or having from one to three C—C double bonds, and A1 from groups capable of reacting with amines.
摘要:
The invention relates to a condensation product obtainable by reaction of a1) at least one aromatic or heteroaromatic, where the aromatic or heteroaromatic is substituted by at least one hydroxyl group (—OH) and at least one carboxyl group (—COOH), and where the hydroxyl and/or carboxyl group can be present in salt form, a2) at least one carbonyl compound, a3) optionally at least one sulfonating agent a4) optionally at least one urea derivative, and a5) optionally at least one further aromatic or heteroaromatic, or a physiologically tolerable salt thereof, with the precondition that the component a1) is not salicylic acid or sulfosalicylic acid if the component a4) is melamine.
摘要:
The present invention relates to the use of a tanning agent in or on filters, in particular natural or synthetic fibrous fabric or foams, for the avoidance of infections, these filters in particular being part of respiratory protection masks or respiratory protection apparatuses.
摘要:
An epichlorohydrinamine polymer has a ratio of amine units to epichlorohydrin units of from 0.8:1.2 to 1.0:1.0, dimethylaminopropylamine and benzylamine preferably being used as amine and/or ammonium units. The novel epichlorohydrinamine polymer is used, for example, for the surface treatment of semifinished leather products and textile materials.
摘要:
A process for the treatment of leather comprises the following process steps: (a) Application of at least one cationic or amphoteric aqueous treatment composition to leather by roll coating and/or roll application and/or spray application, and subsequently (b) treatment of the leather with an anionic leather treatment composition in a drum.
摘要:
The invention relates to stable silicon dioxide dispersions and also their use for producing polyurethanes. The silicon dioxide dispersions are largely or preferably completely free of water and comprise silicon dioxide particles having an average diameter of 1-150 nm and at least one chain extender. The silicon dioxide particles can be modified by means of a silane (S) which comprises groups which are reactive toward isocyanates. Furthermore, a polyol, in particular a polyesterol and/or an isocyanate-comprising compound can be comprised in the silicon dioxide dispersions.
摘要:
A process for the preparation of a readily water-redispersible polymer powder by spray drying of an aqueous polymer dispersion in the presence of a novel spray drying assistant.
摘要:
The invention relates to adducts that can be obtained by reacting carbonyl compounds of general formula (I) in which the variables are defined as follows: R1 and R2 are selected among hydrogen, C1-C12 alkyl, C3-C12 cycloalkyl, substituted or unsubstituted, C7-C13 aralkyl, C6-C14 aryl, substituted or unsubstituted, whereby R1 and R2 can be bounds to one another while forming a ring. These carbonyl compounds are reacted with cyclic compounds of general formula (II) in which the variables are defined as follows: X is selected among oxygen, sulfur and N—R8; R3 and R8 are the same or different and are selected among hydrogen, C1-C12 alkyl, C3-C12 cycloalkyl, substituted or unsubstituted, C7-C13 aralkyl, C6-C14 aryl, substituted or unsubstituted, formyl, CO—C1-C12 alkyl, CO—C3-C12 cycloalkyl, substituted or unsubstituted, CO—C7-C13 aralkyl, CO—C6-C14 aryl, whereby in the event X═N—R8, R3 and R8 can be bound to one another while forming a ring; R4, R5 and R6 are the same or different and are selected among hydrogen, C1-C12 alkyl, C3-C12 cycloalkyl, substituted or unsubstituted, C7-C13 aralkyl, C6-C14 aryl, substituted or unsubstituted, whereby two adjacent radicals at time can be bound to one another while forming a ring; n represents a integer ranging from 1 to 4, and; R7 is the same or different and is selected among hydrogen, C1-C12 alkyl, C3-C12 cycloalkyl, substituted or unsubstituted, C7-C13 aralkyl, C6-C14 aryl, substituted or unsubstituted, whereby two adjacent radicals R7 at time can be bound to one another or R6 or R4 can be bound to adjacent R7 while forming a ring.