Preparation for shrinkproofing wool

US4283191A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Gotz Koerner · Essen, DE
• Friedhelm Nickel · Essen, DE
• Gunter Schmidt · Houghton, US

Key dates

• Filing date: Mar 19, 1980
• Grant date: Aug 11, 1981
• Expiry date: Mar 19, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M15/647
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A preparation for shrinkproofing wool composed of: PA1 (a) 1 to 50 weight percent of organopolysiloxanes, which are built up from PA2 (a.sub.1) 90 to 99.8 mole percent of units of formula R.sub.2.sup.1 SiO, and PA2 (a.sub.2) 0.2 to 10 mole percent of units of the formula R.sup.2 SiO.sub.1.5 in which PA3 R.sup.1 and R.sup.2 consist of 0.1 to 10 mole percent of polyoxyalkylene residues and, on the other hand, of 0.03 to 3 mole percent of mercaptoalkyl or mercaptoaryl residues, and/or 0.06 to 6 mole percent of aminoalkyl residues and/or 0.1 to 10 mole percent of anionic groups, which are linked to silicon atoms through carbon atoms, PA3 the remaining portion of R.sup.1 and R.sup.2 groups being methyl groups, up to 10 mole percent of which however may be replaced by alkyl residues of longer chain length, by aryl residues or by hydrogen atoms, while at the same time up to 5 mole percent of the oxygen atoms, which are liked to silicon, may in each case be replaced by two lower alkoxy or hydroxy groups, and PA1 (b) 50 to 99 weight percent of water and/or organic solvents. Wool, treated with this preparation, retains its resistance to shrinking even after repeated launderings. The hand of …