摘要:
Agents for the fatliquoring of, in particular, leathers and hides tanned in the absence of chromium comprise A) at least one modified natural oil and B) at least one stabilizer LnR where Ra is H or methyl, Rb is methyl, ethyl or tert-butyl, Rc is methyl, tert-butyl, cyclohexyl or methylcyclohexyl, R is an n-valent C3- to C30-hydrocarbon radical which is unsubstituted or substituted and/or contains hetero atoms and n is an integer from 1 to 10, the stabilizer LnR having altogether at least 20, in particular altogether at least 28, carbon atoms, and, where n is 2, —R— also being —S—, —O—, —N(H)—, —CH2—, —(CH2)2—, —CH(CH3)—, —CH2)3—, —CH(C2H5)— or —C(CH3)2—. The novel fatliquoring agents are used in leather production and/or leather treatment, and leather is produced and/or treated using aqueous dispersions of these fatliquoring agents.
摘要:
The present invention provides a process for preparing a terpyridine compound of the formula I by obtaining a C1-C4-alkyl pyridine-2-carboxylate derivative by acid hydrolysis of a 2-cyanopyridine derivative by means of an anhydrous inorganic acid or its anhydride in the presence of water and a C1-C4-alkanol, with an equimolar amount of water being added to the 2-cyanopyridine derivative prior to addition of the anhydrous inorganic acid or its anhydride, subsequently condensing the resultant C1-C4-alkyl pyridine-2-carboxylate derivative with acetone in an aprotic solvent in the presence of a base, then reacting the obtained 1,5-bis(2-pyridyl)pentane-1,3,5-trione derivative with ammonia or ammonium salts (NH4)qY with removal of the water of reaction formed by employing a C1-C4-alkanol as an entrainer, and finally chlorinating the resultant 2,6-bis(2-pyridyl)-4(1H)pyridinone derivative in the presence of phosphorus oxide chloride.
摘要:
Compositions comprising the following components: (A) at least one carboxyl-containing polysiloxane which has at least one structural element of the formula Ia, Ib or Ic per molecule, (B1) at least one aprotic substance which is liquid at room temperature or (B2) at least one organic solvent, (C) up to 2% by weight, based on the weight of the composition, of water, the variables being defined as follows: R1 is hydrogen, hydroxyl, C1-C6-alkyl, C6-C14-aryl or C1-C4-alkoxy, R2 is hydrogen or C1-C6-alkyl, Z1 is C2-C25-alkylene, C3-C10-cycloalkylene, C6-C14-arylene, —[(CH2)n—NR2—(CH2)m]p, n and m are integers which are identical or different and are from 1 to 10, p is an integer from 1 to 5, A1 is C2-C20-alkylene, unsubstituted or substituted by R3 and/or R4, —CH═CR3—, R3 and R4 are identical or different and are selected from hydrogen, C1-C20-alkyl, C2-C20-alkenyl, C6-C14-aryl and C1-C4-alkoxy; it being possible for R3 and R4 to be linked to one another with formation of a mono- or bicyclic system, M are identical or different and are selected from hydrogen, alkali metal and ammonium, which may be substituted or cyclic, are prepared by a process wherein at least one amino-containing polysiloxane which has at least one structural element of the formula IIa, IIb or IIc per molecule is reacted, in the presence or absence of component (B1), with at least one dicarboxylic anhydride of the formula IIIa or at least one dicarboxylic acid derivative of the formula IIIb X being a leaving group and Z2 being C2-C25-alkylene, C3-C10-cycloalkylene, C6-C14-arylene or —[(CH2)n—NR2—(CH2)m]p, and then, if required, component (B1) or (B2) is added.
摘要:
A fatliquoring agent comprises A) a mixture of modified natural oils containing a1) at least one oxidized sulfited natural oil and a2) at least one oxidized sulfated natural oil, B) an emulsifier mixture containing b1) at least one C6- to C14-alkanol alkoxylated with from 4 to 12 alkylene oxide units, b2) at least one C12- to C24-alkanol alkoxylated with from 15 to 40 alkylene oxide units and b3) at least one C12- to C24-alkanol alkoxylated with from 50 to 100 alkylene oxide units, and C) if required, a linear, cyclic or branched polymer of a dialkylsilanediol, SiR2(OH)2, where R is methyl, ethyl, n-propyl or phenyl, and/or D) if required, a compound of the formula (II) where R1 and R2 are identical or different and, independently of one another, are selected from the group consisting of H, M, saturated linear aliphatic C1- to C18-alkyl and saturated branched aliphatic C3- to C18-alkyl, where at least one of the two radicals R1 and R2≠H, M with M=alkali metal or 0.5 alkaline earth metal, and M+ is selected from the group consisting of H+, NH4+, alkali metal+ and 0.5 alkaline earth metal+. The use of the novel fatliquoring agents in leather production and/or leather treatment and processes for the production and/or treatment of leather with aqueous dispersions of these fatliquoring agents are also described.
摘要:
Fatliquoring agents for the production and/or for the treatment of leather comprising (A) at least one natural lipoid; (B) at least one polymer based on the monomers acrylic acid and/or methacrylic acid; (C) an emulsifier composition containing a C6- to C17-alkanol alkoxylated with up to 12 alkylene oxide units or a mixture of two or more such alkanols and a C12- to C24-fatty alcohol mixture alkoxylated with at least 15 alkylene oxide units.
摘要:
The present invention relates to the use of MDF or HDF for the production of a floor panel which comprises a core of MDF or HDF, a backing and, if appropriate, a protective layer, the decorative layer otherwise usual in the case of laminate floor coverings preferably being dispensed with. Furthermore, the present invention relates to floor panels which are produced with the use according to the invention of MDF or HDF, and floor coverings which comprise the floor panels according to the invention.
摘要:
The present invention relates to a method for the reduction of the formaldehyde emission of wood-base materials by application of nitrogen-containing compounds, wherein (i) a mixture which comprises at least one polyamine and, if appropriate, up to 20% by weight, based on the mixture, of urea is applied to the wood-base material; (ii) polyamine is applied on or in the particle or fiber cake; (iii) polyamine is applied to the coating substrate used for surface finishing and/or (iv) polyamine is applied to the exposed areas; the polyamines having a molecular weight of at least 500 g/mol and at least 6 primary or secondary amino groups.
摘要:
The present invention relates to a method for the reduction of the formaldehyde emission of wood-base materials by application of nitrogen-containing compounds, wherein (i) a mixture which comprises at least one polyamine and, if appropriate, up to 20% by weight, based on the mixture, of urea is applied to the wood-base material; (ii) polyamine is applied on or in the particle or fiber cake; (iii) polyamine is applied to the coating substrate used for surface finishing and/or (iv) polyamine is applied to the exposed areas; the polyamines having a molecular weight of at least 500 g/mol and at least 6 primary or secondary amino groups.
摘要:
Multilayered articles comprise (E) optionally at least one decor layer, (F) at least one substrate comprising cellulose fibers, (G) at least one metal-containing layer prepared by a process comprising the steps of (c) printing covering layer (D) with a printing formulation comprising at least one metal powder, (d) providing with at least one item generating or consuming electric current, (e) depositing at least one further metal, (H) optionally at least one covering layer.
摘要:
Water repellency is imparted to leather and fur skins by a process in which leather or fur skin is treated, before, during or after the retanning, with one or more formulations comprising from 1 to 30% by weight, based on the formulation, of a mixture of polysiloxanes comprising from 10 to 90% by weight, based on the mixture, of one or more carboxyl-containing polysiloxanes, from 90 to 10% by weight, based on the mixture, of one or more carboxyl-free polysiloxanes and from 3 to 25% by weight, based on the formulation, of at least one emulsifier.