Process for the protection of elastane fibres

Details Process for the protection of elastane fibres Process for the protection of elastane fibres

D - Textiles, Paper

01

F

D01F 1/10 (2006.01) C08K 3/22 (2006.01) C08L 75/04 (2006.01) D01F 6/70 (2006.01)

Patent

CA 2221065

This invention relates to the protection of polyurethane compositions and especially of elastic polyurethane fibres produced therefrom against destruction or degradation by dry cleaning agents based on halogenated or non-halogenated hydrocarbons, in particular on tetrachloroethylene (perchlor), as are used for dry cleaning textiles. This invention in particular relates to the use of hydrotalcites and/or other metal aluminium hydroxy compounds which are coated with anionic surfactants, fatty acids, silanes, polyorganosiloxanes, polyorganohydrogensiloxanes or higher fattyacid esters or are uncoated as additives to polyurethane compositions and especially polyurethane fibres produced therefrom to provide protection against degradation or destruction by the hydrocarbons.

La présente invention concerne la protection des compositions de polyuréthane et particulièrement des fibres de polyuréthane élastiques ainsi produites contre la destruction ou la dégradation par les agents de nettoyage à sec à base d'hydrocarbures halogénés ou non halogénés, en particulier le tétrachloroéthylène (perchlor), utilisés pour le nettoyage à sec des textiles. La présente invention concerne en particulier l'utilisation d'hydrotalcites et/ou d'autres composés d'hydroxydes mixtes d'un métal et d'aluminium qui sont revêtus de surfactants anioniques, d'acides gras, de silanes, de polyorganosiloxanes, de polyorganohydrosiloxanes ou esters d'acide gras supérieurs ou qui sont non revêtus comme additifs dans les compositions de polyuréthane, et particulièrement dans les fibres de polyuréthane ainsi produites, pour assurer une protection contre la dégradation ou la destruction par les hydrocarbures.

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