Viscous liquid suitable for producing gel threads or fibres, process for the production thereof and its use for producing oxidic, inorganic fibres

US5777057A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Walther Glaubitt · Würzburg, DE
• Rainer Jahn · Veitshöchheim, DE

Key dates

• Filing date: Oct 18, 1995
• Grant date: Jul 7, 1998
• Expiry date: Oct 18, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/624
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to viscous, aluminium-containing liquids suitable for roducing gel threads, filaments or fibres, a process for the production thereof and the use thereof for the production of alumina-containing, inorganic fibres. The liquids according to the invention comprise one or more partly or completely hydrolytically condensable compounds of aluminium and optionally further elements and/or precondensates derived from said compounds. The hydrolytically condensed Al-compounds are derived from compounds of formula (I) EQU Al(OR*).sub.3 (I) in which the radicals R* stand for propyl or butyl in that the Al(OR*).sub.3 is reacted with an alcohol of formulas (II) or (III): ##STR1## in which R.sup.1 stands for an alkyl radical, R.sup.2 for an alkylene radical and X is O, S or NR.sup.3, with R.sup.3 being hydrogen or alkyl. The resulting Al-compounds are complexed with a low molecular weight carboxylic acid and hydrolytically condensed.