Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Martin Kuhn

Philippe Ouziel

Hans-Ulrich Berendt

Albert Stehlin

Thomas Maier

Melvin Harris

Hans-Ulrich Berendt, Deceased

Phosophonomethylated chitosans containing repeating units of formula ##STR1## wherein R.sub.1 is hydrogen or a radical of formula ##STR2## R.sub.2 is a radical of formula (1a), X.sub.1 and X.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.5 alkyl or an alkali metal ion or ammonium ion and n is 50 to 4000, have versatile utilities as sequestrants, stabilizers for bleaching agents as well as humectants in cosmetic compositions.

Methods of chelating or bleaching using phosphonomethylated chitosans

Phosphonomethylated chitosans

The invention relates to N-cyanomethylated chitosans of formula (1) and to the hydrolysates thereof of formula (2), as well as to processes for the preparation of these compounds. The cyanomethylated chitosans, in particular the hydrolysates corresponding to formula (2), find versatile utility as separating membranes, complexing agents, encrustation inhibitors, stabilisers for bleaching liquors, moisture retainers in cosmetic compositions, thickeners and repellents.

N-cyanomethylated chitosans and hydrolysates thereof

Described is a process for dyeing fibrous materials made of or containing wool with anionic dyes, which comprises dyeing these materials in the presence of a wool preservative comprising at least one compound of the formula

Process for dyeing fibrous materials made of or containing wool

The present invention relates to the use of an acrylamide homopolymer or copolymer in an amount of &lt;0.04 g per liter of dye liquor as anticrease agent in exhaust dyeing processes.

Auxiliary for textile wet finishing processes

A process for dyeing wool-containing fibre materials with anionic dyes, which comprises dyeing said materials in the presence of a wool protective agent which is a reaction product of an epihalohydrin and an amine of formula

Process for dyeing wool-containing fibre materials with anionic dyes in

Lubricant-containing aqueous preparations of copolymers are obtainable by polymerisation of

Lubricant-containing aqueous preparations of copolymers

A method is described for dyeing fibrous materials made of or containing wool with anionic dyes, which comprises dyeing these materials in the presence of a wool preservative comprising at least one compound of the formula

Method for dyeing fibrous materials made of or containing wool

Novel N-alkenoyl enamide of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl,

N-alkenoyl enamides, their preparation and the use thereof

Textile cellulose material is printed or dyed with reactive dyes with the aid of foam. The foam is applied by applying to the cellulose material a foamed, aqueous preparation which contains in addition to dyes and fixing alkalis

Process for printing or dyeing cellulose-containing textile material:

Process for printing or dyeing cellulose-containing textile material

Textile cellulose material is printed or dyed with reactive dyes with the aid of foam. The foam is applied by applying to the cellulose material a foamed, aqueous prepartion which contains in addition to dye and fixing alkalis

A process for the encapsulating of substances immiscible with water by dispersing the substance to be encapsulated in a distribution medium in the presence of a hydrate or bisulphite adduct of a polyacrolein or acrolein copolymer and reacting said hydrate or bisulphite adduct with a water-soluble, polyfunctional, monomeric or polymeric hydrophilic compound and, optionally, additionally with a curing agent or an aminoplast precondensate to form an insoluble capsule.

Growing community of inventors

Dornach, Switzerland

Martin Kuhn