The invention relates to synthetic material dispersions consisting of (a) an aqueous phase of solutions of hydrophilic melamine resin precondensates and a latent hardening catalyst in water or in mixtures of water and alcohols C
1
-C
6
, (b) an organic nanophase in the form of nanometric droplets and/or nanoparticles derived from 70-99% of the melamine resin precondensates which are insoluble in water and etherifieds and contain hardening acid catalysts and acid impermeability agents, (c) dispersion agents at a concentration of 1-10 mass % in relation to the total mass of the melamine resin precondensates. The synthetic material dispersions are used for producing flat coated products which are externally used in the form of laminates, of coated flat carrying materials or moulded coated bodies for construction or for sports and recreation.
Lignocelluosic Material Which is Low in Formaldehyde and Method for the Production Thereof
申请人:Kingma Arend Jouke
公开号:US20080220277A1
公开(公告)日:2008-09-11
The invention relates to a lignocellulose material comprising a crosslinkable nitrogen compound, technically a formaldehyde condensate, in crosslinked form in a constituent amount (N) of at least 1% by weight, calculated as nitrogen and based on the total weight of the lignocellulose material, in which the ratio (FA/N) of formaldehyde emission (FA), determined by means of the bottle method according to EN 717, part 3, to constituent amount of the nitrogen compound (N) exhibits a value of at most 5.0×10
−3
, and to a process for the preparation thereof.
[DE] KUNSTSTOFFDISPERSIONEN<br/>[EN] SYNTHETIC MATERIAL DISPERSIONS<br/>[FR] DISPERSIONS DE MATIERE SYNTHETIQUE
申请人:AMI AGROLINZ MELAMINE INT GMBH
公开号:WO2004056899A1
公开(公告)日:2004-07-08
Kunststoffdispersionen aus (a): einer wässrigen Phase aus Lösungen von hydrophilen Melaminharzvorkondensaten und latenten Härtungskatalysatoren in Wasser oder in Mischungen aus Wasser und C1-C6-Alkoholen und (b): einer organischen Nanophase in Form von Nanotröpfchen und/oder Nanopartikeln aus 70 bis 99 Masse % wasserunlöslichen veretherten Melaminharzvorkondensaten, die saure Härtungskatalysatoren und Hydrophobierungsmittel enthalten und (c): Dispergatoren in einer Konzentration von 1 bis 10 Masse %, bezogen auf die Gesamtmasse der Melaminharzvorkondensate,wobei in den Kunststoffdispersionen das Verhältnis hydrophile Melaminharzvorkondensate zu wasserunlösliche veretherte Melaminharz-vorkondensate 10 : 1 bis 1 : 10 und der Wassergehalt der Kunststoff-dispersionen 8 bis 50 Masse % ist.Die Kunststoffdispersionen sind zur Herstellung beschichteter Flächengebilde für den Außeneinsatz in Form von Laminaten, Schichtpressstoffen, beschichteten flächigen Trägermaterialien oder beschichteten Formkörpern bei Anwendungen im Bauwesen sowie im Sport- und Freizeitsektor geeignet.
Tris-(hydroxyamino)triazines: high-affinity chelating tridentate O,N,O-hydroxylamine ligand for the cis-VVO2+ cation
作者:Vladimiros A. Nikolakis、Vassiliki Exarchou、Tamás Jakusch、J. Derek Woolins、Alexandra M. Z. Slawin、Tamás Kiss、Themistoklis A. Kabanos
DOI:10.1039/c0dt00574f
日期:——
The treatment of the trichloro-1,3,5-triazine with N-methylhydroxylamine hydrochloride results in the replacement of the three chlorine atoms of the triazine ring with the function –N(OH)CH3 yielding the symmetrical tris-(hydroxyamino)triazine ligand H3trihyat. Reaction of the ligand H3trihyat with NaVVO3 in aqueous solution followed by addition of Ph4PCl gave the mononuclear vanadium(V) compound Ph4P[VVO2(Htrihyat)] (1). The structure of compound 1 was determined by X-ray crystallography and indicates that this compound has a distorted square-pyramidal arrangement around vanadium. The ligand Htrihyat2− is bonded to vanadium atom in a tridentate fashion at the triazine ring nitrogen atom and the two deprotonated hydroxylamido oxygen atoms. The high electron density of the triazine ring nitrogen atoms, which results from the resonative contribution of electrons of exocyclic nitrogen atoms, leads to a very strong V–N bond. The cis-[VVO2(Htrihyat)]− species exhibits high hydrolytic stability in aqueous solution over a wide pH range, 2.5–11.5, as was evidenced by potentiometry.