Composition for pretreating fiber materials
Compositions that include a mixture of three different ethoxylated alcohols with or without further products are useful for pretreating textile materials, especially cotton fabrics. The compositions have acceptable viscosities and are preferably used in the form of aqueous solutions or dispersions. These have little if any tendency to form foam, are highly compatible with enzymes and impart very good rewettability to textiles treated therewith.
1 . A method of pretreating fiber materials in the form of textile wovens or knits, said pretreating method being performed prior to manufacture of enduse articles from said materials, which comprises applying a composition that includes the following components A), B) and C) thereto:
A) an ethoxylated alcohol of the general formula (I)
B) an ethoxylated alcohol of the general formula (II)
C) an ethoxylated alcohol of the general formula (III)
where R 1 is a linear or branched alkyl radical of 6 to 14 carbon atoms, R 2 and R 3 are each a linear or branched alkyl radical of 10 to 18 carbon atoms,
m is from 3 to 12,
n is from 3 to 18,
x is from 5to20,
R 2 and R 3 each contain at least 2 carbon atoms more than R 1 and x−n is not less than 2.
2 . The method according to claim 1 , wherein R 1 is a branched alkyl radical of 8 to 12 carbon atoms.
3 . The method according to claim 1 , wherein R 2 and R 3 are each independently a branched alkyl radical of 10 to 16 carbon atoms.
4 . The method according to claim 1 , wherein n is from 4 to 10 and x is from 6 to 16.
5 . The method according to claim 1 , wherein the composition includes the components A), B) and C) in the following relative amounts:
10 to 40 parts by weight of A)
3 to 30 parts by weight of B)
0.1 to 10 parts by weight of C).
6 . The method according to claim 1 , wherein the composition further includes one or more of the components D), E), F), G) and H):
D) water,
E) an aliphatic diol of 2 to 10 carbon atoms,
F) one or more aliphatic mono- or polybasic carboxylic acids of 3 to 8 carbon atoms or alkali metal salts thereof,
G) hydrolyzed poly(maleic anhydride) and
H) an alkylpolyglycoside.
7 . The method according to claim 6 , wherein component E) is a diol having a branched saturated alkyl radical in which the two OH groups are not attached to adjacent carbon atoms.
8 . The method according to claim 6 , wherein component F) is present and is citric acid or an alkali metal salt thereof.
9 . The method according to claim 6 , wherein component F) is present and is gluconic acid or an alkali metal salt thereof.
10 . The method according to claim 6 , wherein the composition includes the components A) to H) in the following relative amounts:
10 to 40 parts by weight of A)
3 to 30 parts by weight of B)
0.1 to 10 parts by weight of C)
0 to 100 parts by weight of D)
0 to 20 parts by weight of E)
0 to 20 parts by weight of F)
0 to 10 parts by weight of G)
0 to 15 parts by weight of H).
11 . The method according to claim 1 wherein the fiber materials are textile fabrics.
12 . The method according to claim 11 , wherein the fabrics are wovens or knits.
13 . The method according to claim 11 , wherein the fiber materials are 50 to 100% by weight cellulose.
14 . The method according to claim 13 , wherein the fiber materials are 50 to 100% by weight cotton.