C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 33/02 (2006.01) C08K 5/17 (2006.01) C08L 35/00 (2006.01) D06M 15/263 (2006.01) D06P 1/52 (2006.01) D06P 1/647 (2006.01) D06P 5/04 (2006.01) D06P 5/08 (2006.01) D06P 3/60 (2006.01) D06P 3/66 (2006.01)
Patent
CA 2213172
Aqueous, homogeneous 20 to 60 % solutions (L) of mixtures of (A) copolymers of (x) (meth)acrylic acid with (y) maleic acid or maleic acid anhydride in the molar ratio (x)/(y) = 0.7/1 to 7/1, with an average molecular weight Mw in the range of from 500 to 500'000, as free acids and/or sodium salts and (B) Nitrilotriacetic acid as free acid and/or sodium salt, in which the weight ratio (A)/(B) is in the range of from 1/1 to 1/10 at least 25 % of the total carboxy groups are present as sodium salt and the pH of (L) is in the range of from 5 to 11, are suitable as adjuvants for the treatment of fibrous material, in particular as scouring agents for dyeings of hydrophilic fibrous material.
Des solutions (L) aqueuses homogènes à 20-60 % de mélanges de copolymères (A) d'acide (méth)acrylique (x) et d'acide maléique (y) ou d'anhydride maléique dans le rapport molaire (x)/(y) = 0,7/1 à 7/1, avec un poids moléculaire moyen MW de 500 à 500 000, sous la forme d'acides libres et/ou de sels de sodium, et d'acide nitrilotriacétique (B) sous forme d'acide libre et/ou de sel de sodium, le ratio des poids (A)/(B) se situant entre 1/1 et 1/10, avec au moins 25 % des groupements carboxy totaux présents sous la forme de sel de sodium et le pH de (L) entre 5 et 11, conviennent comme adjuvants pour le traitement des matières fibreuses, en particulier comme agents de lavage pour la teinture des matières fibreuses hydrophiles.
Danner Bernard
Palacin Francis
Clariant Finance (bvi) Limited
Kirby Eades Gale Baker
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