Abstract:
The invention relates to an aqueous impregnating resin solution containing (A) between 77.5 and 99.8 wt. %, in relation to the impregnating resin solution, of aqueous condensates based on melamine and formaldehyde; (B) between 0.1 and 20 wt. %, in relation to the impregnating resin solution, of at least one specific quaternary ammonium compound; and (C) between 0.1 and 2.5 wt. %, in relation to the impregnating resin solution, of an aqueous hardener solution. The invention also relates to an aqueous impregnating resin solution consisting of constituents (A) and (B), and to an aqueous hardener mixture consisting of constituents (B) and (C). The invention further relates to an impregnating resin film containing fibrous substances containing cellulose and impregnated with the aqueous impregnating resin solution, and to the use of the aqueous impregnating resin solution, or impregnating resin film, for the antistatic finishing of coated materials.
Abstract:
The invention relates to an aminoplast resin nonwoven film containing a nonwoven that is impregnated with a cross-linkable aminoplastic resin, the nonwoven containing 1 to 100 % by weight of melamine fibers with regard to the total fiber content. The invention also relates to the use of aminoplast resin nonwoven films for 3D coating substrates with a three-dimensionally structured surface. The invention further relates to laminates containing a substrate, optionally a woven or decorative paper and to the aminoplast resin nonwoven film according to the invention.
Abstract:
Disclosed is a method for producing alkoxycarbonylamino triazines of formula (I) by reacting diaminotriazines or triaminotriazines with cyclic carbonic acid esters and optional subordinate quantities of acyclic carbonic acid esters in the presence of an alcohol and an alkaline alkanol or alkaline-earth alkanol as a base. In said formula, Y represents hydrogen, C1-C4 alkyl, phenyl that is optionally substituted by C1-C4 alkyl, C1-C4 alkoxy, or halogen, or a radical of formula NR R while R , R , R , R , R , and R independently represent hydrogen or a radical of formula COOX or X, wherein X represents C1-C13 alkyl, the carbon skeleton of which can be interrupted by 1 or 2 oxygen atoms having the function of ether and/or substituted by hydroxy, or C3-C6 alkenyl provided that at least one of the radicals R to R in formula (I) represents COOX, or at least one of the radicals R to R in said formula represents COOX if Y represents NR R .
Abstract:
The invention relates to aminoplastic resin films containing decorative paper impregnated with a homogeneous, single-phase aminoplastic resin mixture containing (A) between 50 and 99.9 wt. %, in relation to the aminoplastic resin mixture, of aqueous condensation products containing 1 mol melamine and between 1.3 and 2.5 mol formaldehyde, (B) between 0.1 and 30 wt. %, in relation to the aminoplastic resin mixture, of specific polyalkylene glycols and/or polyalkylene glycol derivatives, and (C) between 0 and 20 wt. %, in relation to the aminoplastic resin mixture, of additives, auxiliary agents and/or additives. The invention also relates to the use of said films for coating derived timber products or plastics, especially for coating three-dimensionally structured surfaces. The invention further relates to the use of specific polyalkylene glycols, polyalkylene glycol derivatives and/or alkoxylated polyamides as bonding agents for plastic surfaces in aminoplastic resins, and also to specific aminoplastic resin mixtures.
Abstract:
The invention relates to an aqueous melamine resin mixture with a resin content in the range of 50 to 70 wt. %, based on the aqueous melamine resin mixture, with melamine and formaldehyde present in the resin in a molar ratio of 1:3 to 1:1 and the resin contains 1 to 10 wt. % polyvalent alcohols, 0 to 8 wt. % caprolactam and 0.5 to 10 wt. % 2-(2-phenoxyethoxy)-ethanol and/or polyethylene glycol with an average molecular mass of 200 to 1500 each based on the aqueous melamine resin mixture. The invention further relates to a method for production of said melamine resin mixtures and use thereof for the impregnation of absorbent support materials and a composite material made from the melamine resin mixture and the support material.
Abstract:
processo para a elaboração de uma mistura de reação alcanólica. a invenção refere-se a um processo para o tratamento de uma istura de reação alcoólica produzida durante a preparação de lcoxicarbonilaminotriazinas e compreendendo pelo menos uma alcoxicarbonilaminotriazina, pelo menos um éster carbônico cíclico e/ou acíclico, pelo menos um c~1~-c~13~ alcanol, que opcionalmente compreende um ou dois átomos de oxigénio na forma de ligações de éter, e é opcionalmente substituído por c~1~-c~4~ alquil e/ou hidroxila, e pelo menos um alcóxido de metal alcalino ou alcóxido de metal alcalino terroso, com ou sem melamina e com ou sem catalisador, no qual os componentes polares e/ou iônicos são removidos por extração com um extrator polar que não é completamente miscível com a fase orgânica presente na mistura de reação, dando uma fase alcoólica compreendendo pelo menos uma alcoxicarbonilaminotriazina, e uma fase polar compreendendo um extrator com componentes polares e/ou iônicos dissolvidos nele.
Abstract:
processo para a preparação de alcoxicarbonilaminotriazina pulverulenta de fluxo livre. a invenção refere-se a um processo para a preparação de alcoxicarbonilaminotriazina pulverulenta, de fluxo livre, a partir de uma mistura de reação alcoólica, produzida durante a preparação de alcoxicarbonilaminotriazinas e compreendendo pelo menos uma alcoxicarbonilaminotriazina, pelo menos um éster de ácido carbônico cíclico e/ou acíclico, e pelo menos um alcanol c~1~-~13~, opcionalmente contendo um ou dois átomos de oxigênio como uma ligação éter e opcionalmente substituído por alquila c~1~-c~4~ e/ou hidróxi e pelo menos um alcóxido de metal alcalino ou alcalino terroso, de modo opcional melamina e opcionalmente um catalisador, caracterizado pelo fato de que a mistura da reação é atomizada e secada em um secador por pulverização.
Abstract:
The invention relates to a process for removing salts from an alkanolic reaction mixture which is obtained in the preparation of alkoxycarbonylaminotriazines and comprises at least one alkoxycarbonylaminotriazine, at least one cyclic and/or acyclic carbonic ester, at least one C 1 -C 13 -alkanol which optionally comprises one or two oxygen atoms as ether bonds and is optionally substituted by C 1 -C 4 -alkyl and/or hydroxyl, and also at least one alkali metal alkoxide or alkaline earth metal alkoxide, with or without melamine and with or without catalyst, in which salts are removed from the reaction mixture by ion exchange over a cation exchanger and/or anion exchanger.
Abstract:
Process for the preparation of etherified melamine/formaldehyde condensates, in which first a methylolation of melamine with a formaldehyde component in the molar ratio of from 1:6 to 1:15, preferably at a pH of >7, is carried out. This is followed by an etherification of the resulting hydroxymethylation intermediate in the presence of a C1-C20-alkyl, preferably of a C1-C6-alcohol, particularly preferably of a C1-C4-alcohol, at a pH of 9.5 being established before, during and/or after the distillation. According to the invention, a plurality of hydroxymethylation, etherification and distillation steps follow in order to achieve an etherified melamine/formaldehyde condensate which is distinguished by a high degree of hydroxymethylation, a high solids content and a low viscosity.