摘要:
The invention relates to a flame-retardant mixture for lignocellulose composites having from 60 to 90% by mass of particulate or fibrous lignocellulose materials and from 40 to 10% by mass of a flame retardant concentrate immobilized on or in the particulate or fibrous lignocellulose materials as carriers. The flame retardants are boric acids or the salts thereof. Also, melamine resins and optionally synergistic agents and further additives may be present. The preparation of the flame-retardant mixture can be effected by a liquid impregnation process, a melt impregnation process and a liquid impregnation/solids mixing process. In the form of flame-retardant semifinished products and molding materials, the lignocellulose composites have high resistance to insect infestation, fungal infestation and mold infestation and high resistance to washing out of the flame-retardant mixture and are preferably suitable for applications in outdoor use in the building and leisure sector.
摘要:
The invention relates to composite materials, comprising plastics and wood, with 55 to 90 mass % of wood in the form of sawdust, wood fibres, and/or wood chippings and 45 to 10 mass % of partly crosslinked melamine resin ethers or mixtures of partly crosslinked thermoplastics and crosslinked melamine resin ethers, whereby the plastics in the composite materials can be in the form of a foam. Said materials can be produced by homogenization of the components in the extruder, pre-impregnation of wood with melamine resins in the screw mixer and subsequent homogenization of the components in the extruder, or by a sinter method, each followed by a subsequent moulding to give the composite material. The composite materials are suitable for application in building and in sport and leisure applications.
摘要:
The invention relates to composite material containing a proportion of wood and a proportion of crosslinked melamine resins, which is characterized in that the crosslinked melamine resins are formed from melamine resins that are, in essence, linearly synthesized and have a shear-dependent viscosity. The invention also relates to a method for producing the composite materials and to the use thereof.
摘要:
The invention relates to plastic products with high strength and flexibility, having 10 to 50 mass % of at least one crosslinked thermoplast and 90 to 50 mass % of at least one crosslinked melamine resin ether. The invention further relates to a method for production of such a plastic product. The aim of the invention is the production of plastic objects in thermoplastics and duroplastics which can be produced by thermoplastic methodology and which have improved material properties.
摘要:
A method for curing aminoplasts, during which layers having layer thicknesses of up to 300 um or filaments and fiber fibrids having a diameter of up to 300 um, which consist of: i) 95 to 99.95% by mass of solvent-free meltable aminoplast polycondensates with molar masses ranging from 1000 to 300000; j) 5 to 0.05% by mass of curing agents, which can be activated by actinic light and which are comprised of acidifiers of the blocked sulfonic acid and/or halogen-substituted triazine derivative and/or onium salt type, and optionally; k) 1 to 20% by mass, with regard to the meltable aminoplast polycondensates, of unmodified and/or modified maleic anhydride copolymers, and/or; i) 0.1 to 5% by mass, with regard to the meltable aminoplast polycondensates, of nanoparticles. The aminoplasts are cured by irradiating them with actinic light at a temperature between the melting point of the aminoplast polycondensate and the thermoinduced decomposition temperature of the light-activatable curing agents. This method enables the production of, preferably, textile fabrics or coatings.
摘要:
The invention relates to a UV-resistant, thermocurable aminoplast composite consisting of lignocellulose and/or cellulose impregnated with a stabiliser and an aminoplast containing stabilisers. The invention also relates to the production and use of said composite.
摘要:
The invention relates to a UV additive for aminoplast resins, to a method for producing a UV additive as well as to uses thereof. Said UV additive contains soluble sterically-hindered nitroxyl compounds in an aqueous aminoplast precondensate. A UV additive for aminoplast resins with several application forms is thus obtained.
摘要:
The invention relates to novel solid body forms of mesoprogestin 11β-[4E-(hydroxyiminomethyl)-phenyl]-17α-methoxymethyl-17β-methoxy-estra-4,9-dien-3-one (oxime J 867), particularly a highly pure and stable amorphous or highly crystalline form (ansolvate/anhydrate) of compound J 867. The invention also relates to methods for producing said novel solid body forms and to the use thereof in pharmaceutical compositions. The novel solid body forms are characterized by exhibiting a high degree of stability. The solid body forms of oxime J 867 can, in particular, be used in the area of fertility control and in hormone replacement therapy.
摘要:
The invention provides methods of detecting one or more specific binding analytes, such as nucleic acids and proteins, in the presence of a neutral or anionic polysaccharide, through light scattering techniques, where a change in light scattering caused by the formation of nanoparticle label complexes within the penetration depth of the evanescent wave of a wave guide signals the presence of the analyte.
摘要:
This invention provides LC compositions useful as birefringent materials in electrooptic devices which exhibit zero or low negatively sloped birefringence dispersion (e.g., exhibiting positive birefringence dispersion significantly lower than that of currently available LC compositions) or more preferably positively sloped birefringence dispersion in which birefringence of the material increases with wavelength. The invention provides compounds useful as components of LC compositions which exhibit negative birefringence where n.sub.o is higher than n.sub.e. The compounds of this invention are dimers of LC-like compounds in which the monomers are linked to each other through a high birefringence moiety (dimerization linker). The LC monomers consist of an LC core and one or two tail groups. Preferred monomers for this invention have low birefringence in comparison to the birefrigence of the monomer linking moiety. The dimers have normal positive birefringence dispersion to have birefringence that is lower in absolute value at longer wavelengths. But since they have negative birefringence, their birefringence actually increases (i.e., goes less negative) as wavelength increases.