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:
The invention relates to a spray condensation method for producing dried resins in the form of a powder. According to the inventive method, at least one crosslinkable initial material that is liquid or dissolved in a liquid phase is condensed with at least one aldehyde in a spray reactor.
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:
The invention relates to a spray condensation method for producing dried resins in the form of a powder. According to the inventive method, at least one crosslinkable initial material that is liquid or dissolved in a liquid phase is condensed with at least one aldehyde in a spray reactor.
Abstract:
In a spray condensation process for the preparation of dried resins in powder form, the condensation of at least one crosslinkable starting material which is liquid or dissolved in a liquid phase with at least one aldehyde is carried out in a spray reactor.
Abstract:
A method for the production of polyether-alcohols from diamino- or triamino-1,3,5-triazine derivatives, e.g. melamine, and cyclic carbonates involves reaction in the absence of catalyst. A method for the production of polyether-alcohols by reacting compounds of formula (I) with cyclic carbonates of formula (II) at 110-250[deg]C in a mol ratio of (I):(II)= (1:1)-(1:100), involves carrying out the reaction in the absence of a catalyst. R 6>-R 9>H, 1-15C alkyl or alkoxycarbonyl; R 5>H, 1-15C alkyl, or aryl or amino; R 1>-R 4>H or 1-10C alkyl . Independent claims are included for (1) polyether-alcohols obtained by this method (2) a method for the production of polyurethanes by reacting polyisocyanates with these polyether-alcohols . [Image] [Image].