12 research outputs found

    Hot-melt adhesive composition and process for the preparation of a textile product

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    De uitvinding heeft betrekking op een smeltlijmsamenstelling voor toepassing in een textiel voortbrengsel, met name een getuft tapijt, welke een polymeer gekozen uit de groep van polyamiden en polyesters, met een aantal gemiddelde molecuulmassa van 500-5000 g/mol en funct ionele eindgroepen bevat. Deze smeltlijm­ samenstelling kan in verschillende vormen worden aangebracht en resulteert in een goede hechting van pool­ materiaal aan dragermateriaal. De uitvinding heeft tevens betrekking op een werkwijze voor het vervaardigen van een textiel voortbrengsel, waarbij de smeltlijmsamenstelling wordt gebruikt, en tevens op het aldus ver­ kregen textiel voortbrengsel en het gebruik daarvan als vloer- of wandbekleding

    Hydrogen-bonded assemblies of calixarenes

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    Functionalization and application of calixarenes

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    Selectively functionalized calix[4]arenes are used to build effective receptors for cations, anions and neutral molecules or for a combination of a cation and an anion. This was done by combination with a terphenyl unit (cation receptor), a uranyl-containing salen moiety (for anionic and neutral guests) or by introduction of sulfonamide groups (anion receptor). Conformational control is effected using the appropriate conditions for the lower rim alkylation, but the conformation can also be influenced by hydrogen bonding. New routes for the synthesis of selectively functionalized calix[4]arenes bearing a combination of functional groups at the upper rim were developed together with a simple method for the direct introduction of meta substituents. Nitrated calix[4]arenes have very good non-linear optical characteristics. Selective methylation and phosphorylation of p-tert-butylcalix[6]arene is shown to be possible when specific conditions are used. The conformational properties of selectively functionalized calix[6]arenes were studied by 1H NMR spectroscopy. The controlled conformation of 1,3,5-trimethoxy-p-tert-butylcalix[6]arene was used to synthesize a cryptocalix[6]arene

    Hot/melt adhesive composition and process for the preparation of a textile product

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    The invention relates to a hot-melt adhesive composition for use in a textile product, in particular a tufted carpet,containing a polymer chosen from the group of polyamides, with a number-average molecular mass of 500-5000 g/mol and functional end groups. This hot-melt adhesive composition can be applied in various forms and results in a good bond of pile material to support material. The invention also relates to a process for the preparation of a textile product, in which the hot-melt adhesive compositionis used, and also to the textile product thus obtained and the use thereof as floor or wall covering.<br/
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