Compositions – Textile processing aid compositions – or processes of preparing – For textile materials consisting wholly or in part of silk...
Patent
1989-01-19
1990-10-30
Clingman, A. Lionel
Compositions
Textile processing aid compositions, or processes of preparing
For textile materials consisting wholly or in part of silk...
811565, 811566, 252 89, D06M 1346, D06M 1526, C08F 218, C08L 3308
Patent
active
049667254
DESCRIPTION:
BRIEF SUMMARY
The present invention describes aqueous dispersions for simultaneously providing fibrous materials with a softening and hydrophilic finish which contain at least one quaternary compound with at least one long-chain alkyl residue and a polymer or copolymer on the basis of alkylacrylates with alkyl residues having at least 4 C atoms, a process for their production and their use.
The use of copolymers on the basis of alkylacrylates for finishing textiles is long known (DE-AS No. 1 119 609 and DE-PS No. 1 209 989). The feel of the fibrous materials treated therewith is favourably affected. It is also possible to obtain other effects, such as reduced wet soiling, by varying the monomers and the ratios of the quantities thereof in the copolymer.
However, the prior art has hitherto not disclosed a method of simultaneously obtaining a pleasant, soft, velvety feel and improved hydrophily of the coated fibrous materials, particularly of cotton towelling fabrics, on this basis.
The object of this invention was therefore to discover means to remedy this shortcoming in the prior art.
According to the invention it is now possible to prepare aqueous dispersions which simultaneously produce a softening and hydrophilic finish for fibrous materials if the conditions which are described in greater detail in patent claim 1 are observed. Details of the aqueous suspensions are placed under protection in the subclaims 2 to 10.
Patent claims 11 to 17 describe processes for producing the dispersions according to the invention. The use of the aqueous dispersions is claimed in patent claim 18.
At least one quaternary compound with at least one long-chain alkyl residue is used as compounds (1). These compounds are generally known and have at least one saturated and/or unsaturated alkyl residue with at least 12, particularly 16 to 22, C atoms as the long-chain alkyl residue.
Octadecyloxymethyl-pyridinium chloride and stearylamidomethyl-pyridinium chloride are cited as examples. However, quaternary imidazolinium derivatives and quaternary ammonium derivatives are particularly suitable as compounds (1). The following are given as examples of the particularly suitable compounds: 1a); 1b),
The quantities of compounds (1) used range from 20 to 70 g, particularly 30 to 60 g to 1000 g aqueous dispersion.
The known polymers or copolymers on the basis of alkylacrylates with alkyl residues having at least 4 C atoms are used as compounds (2). The alkyl residues in said compounds (2) preferably have 4 to 10, particularly 4 to 8 C atoms. The following are given as examples of such base monomers, which are contained in the whole polymer in quantities of 60 to 100% weight, relative to the whole polymer:
Butylacrylate homopolymers are particularly well suited as compounds (2), whereas ethyl acrylate cannot be used as a base monomer. As well as the alkylacrylate homopolymers, copolymers based on the corresponding monomers can also be used as compounds (2).
The following are given as co-monomers without claim to completeness (relating in each case to the total of the monomers):
2-hydroxyethyl- or 3-hydroxypropyl-(meth)acrylate (2 to 10% weight), alkyl methacrylates with at least 4 C atoms in the alkyl residue (2 to 20% weight), ethyl acrylate (1 to 40% weight), (meth)acrylic acid (1 to 5 % weight), amides or N-methylolamides or methylolamides etherified with alcohols having 1 to 4 C atoms of .alpha., .beta.-unsaturated carboxylic acids or mixtures of such monomers (0.5 to 5% weight), vinyl acetate (2 to 40% weight) and acrylonitrile (1 to 10% weight).
Said compounds (2) are available commercially in the form of 30 to 70% aqueous dispersions, whereby 20 to 80 g, particularly 20 to 60 g of compounds (2), calculated as 100% polymer, are used to produce the aqueous dispersions according to the invention.
From one case to the next, particularly if relatively small quantities of compounds (1) are used or if higher requirements are set for compatibility with optical whiteners, it is necessary to use an additional emulsifier as well as the compounds (1) when p
REFERENCES:
patent: 4155855 (1979-05-01), Goffinet et al.
patent: 4179382 (1979-12-01), Rudkin et al.
patent: 4239671 (1980-12-01), Fink et al.
patent: 4293600 (1981-10-01), Fink et al.
patent: 4326965 (1982-04-01), Lips et al.
patent: 4631208 (1986-12-01), Westall
Chem. Abstr., 88(2): 8447p. (Jan. 9, 1989).
Bernhein Michael
Singer Heinrich
Stechele Werner
Ciba-Geigy Corporation
Clingman A. Lionel
Mansfield Kevin T.
McC. Roberts Edward
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