Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With nitrogen – oxygen – or sulfur containing optical...
Reexamination Certificate
2001-02-26
2004-08-24
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With nitrogen, oxygen, or sulfur containing optical...
C510S276000, C510S287000, C510S398000, C510S434000, C008S115510, C008S115530
Reexamination Certificate
active
06780827
ABSTRACT:
Textile material which is used in an environment in which ultraviolet (UV) light acts on the textile material, especially UV light filtering through glass, as for the interior fittings in automobiles (carpets, belts, trim and seat covers), shop windows or glass-enclosed verandas (wall-to-wall carpets), are advantageously finished with a UV absorber in order that the fibres, especially synthetic and cellulosic fibres, and the dyeings too to some extent, may be protected against the damaging action of the UV rays. A preferred procedure for textile material used in an environment of filtered UV light involves applying the UV absorbers to the substrate, in particular to the yarns, together with the respective dyes. Since the yarns, according to a technically preferred procedure, are dyed on packages, in particular cheeses, in doing so it is also desirable to apply the UV absorbers at the same time. However, when dyeing the packages with disperse dyes, a problem is that, in the presence of UV absorbers which have been formulated with surfactants, the liquors may, under the action of the high shearing forces which occur in the cheese, alter to such an extent that the dyeings of the cheeses become unlevel, in particular due to the dye being filtered off, so that the yarn when further processed, for example into knits or wovens, provides an unlevel appearance, or/and, if the dispersions change in their flow behaviour under the action of the high shearing forces, the liquor flow through the cheeses may gradually lead to a troublesome build-up of pressure, which—especially depending on yarn quality and type of wind—leads to correspondingly more pronounced changes in the shearing forces in the package and may even lead to a complete standstill of the flow of liquor through the package. The situation can be analogous with the use of dispersed optical brighteners.
EP-A-468921, 474595 and 490819 describe certain aqueous UV-absorber dispersions containing UV-absorbers and anionic surface active compounds or non-ionogenic and anionic surface active compounds and also such dispersions additionally containing polysaccharides or further linear polymeric compounds as stabilisers and/or thickening agents. EP-A-328485 describes aqueous dispersions of certain dyes, optical brighteners or UV-absorbers containing, besides dispersant, an alkylene-bisamide defoamer and in some examples also certain linear polymers (polyvinyl alcohol or a propyleneoxide/ethyleneoxide 3000 blockpolymer) or a polysaccharide.
It has now been found, surprisingly, that by employing the hereinbelow-defined (C)-containing formulations the above-described problems may be solved or avoided, so that it becomes possible as a result also to treat cheeses with disperse dyes and UV absorber liquors or with disperse brightener liquors without fear of a troublesome pressure build-up or dye or brightener filtration deposits.
The invention relates to the defined compositions, their production and their use.
The invention thus firstly provides aqueous dispersions (U) containing:
(A) a UV-light-absorbing textile treatment agent,
(B) a dispersant system and
(C) a carboxyl-containing crosslinked copolymer.
The UV-light-absorbing textile treatment agents (A) are UV-active agents, i.e. their fundamental property is the absorbing of UV light, whether to convert it into visible wavelengths, as in the case of optical brighteners, or to convert it into other energy forms or other wavelengths, as is the case with typical UV absorbers. Thus, the UV-active agents (A) are in particular
(A
1
) UV absorbers or
(A
2
) optical brighteners.
Suitable UV absorbers (A
1
) include generally known substances as are usually employed for the UV-light-absorbing finishing of synthetic and semisynthetic textile fibres from an aqueous dispersion, chiefly those of the benzophenone, triazine or benzotriazole series, in particular phenols which bear a substituent of the triazine, benzoyl or benzotriazole series in ortho-position relative to the hydroxyl group and which may bear further substituents, in particular non-chromophoric and non-water-solublilizing substituents.
Suitable UV absorbers of the benzophenone series include generally 2-hydroxybenzophenones in which the two benzene rings may optionally be substituted with substituents customary in UV absorbers, in particular non-chromophoric and non-water-solubilizing substituents, for example with hydroxyl, alkyl, alkoxy, aryl, aryloxy, aralkoxy or halogen, aryl (in aryl, aryloxy and aralkoxy) being naphthyl or preferably phenyl, the alkyl and alkoxy radicals containing for example 1 to 4 carbon atoms, phenyl as aryl optionally being further substituted with alkyl, halogen and/or alkoxy, and halogen signifying preferably chlorine, and the alkoxy bridge in aralkoxy containing e.g. 1 or 2 carbon atoms. There may be mentioned as examples 2-hydroxybenzophenones of the following formulae
wherein
R
1
signifies hydrogen, hydroxyl, phenoxy, aralkoxy or C
1-14
-alkoxy,
R
2
signifies hydrogen, halogen or C
1-4
-alkyl,
R
3
signifies hydrogen or hydroxyl,
R
4
signifies hydrogen, hydroxyl, phenoxy, aralkoxy or C
1-4
-alkoxy,
R
5
signifies hydrogen or C
1-4
-alkyl,
R
6
signifies hydrogen or C
1-4
-alkyl and
X signifies a hydrocarbon bridge member having 2 to 12 carbon atoms or hydroxyalkylene.
In the compounds of the formula (I), R
2
, R
3
and R
4
stand each preferably for hydrogen. R
1
stands preferably for hydrogen, hydroxyl, phenoxy or C
1-14
-alkoxy.
In the formula (II), the two substituents R
5
and R
6
are advantageously in the positions ortho and para to the carbonyl group. Preferably, R
5
and also R
6
signify hydrogen. When X stands for hydroxyalkylene, it advantageously contains at least 3 carbon atoms and the hydroxyl group is advantageously not attached to the first or last carbon atom of the bridge. X may e.g. stand for 1,4-phenylene, 1,4-naphthylene or C
2-4
-alkylene or also for 2-hydroxy-1,3-propylene.
The following may be mentioned in particular:
2-hydroxy-4-methoxybenzophenone,
2,4-dihydroxybenzophenone,
2-hydroxy-5-chlorobenzophenone,
1,3-bis-(3′-hydroxy-4′-benzoylphenyl)-2-hydroxypropane.
Suitable UV absorbers of the triazinc series include in general 2-(2′-hydroxyphenyl)-s-triazines in which the positions 4 and 6 are substituted by hydrocarbon radicals which in turn may be further substituted, in which case the substituents are neither chromophoric nor water-solubilizing. The hydrocarbon radicals in 4-position and in 6-position arm for example aryl, alkyl or aralkyl, aryl standing e.g. for naphthyl or preferably phenyl, aralkyl preferably standing for benzyl and alkyl containing e.g. 1 to 18 carbon atoms. The substituents occurring on phenyl rings are for example hydroxyl, halogen, low molecular weight alkyl, alkoxy or alkylthio, and the substituents occurring on the alkyl radicals are e.g. hydroxyl, low molecular weight alkoxy, alkylthio or dialkylamino. There may be mentioned for example the 2-(2′-hydroxyphenyl)-s-triazines of the following formula
wherein
R
7
signifies hydroxyl, halogen, C
1-4
-alkyl or C
1-4
-alkoxy,
R
8
signifies C
1-18
-alkyl, which is optionally substituted with hydroxyl, halogen, C
1-4
-alkoxy, C
1-4
-alkylthio or di-(C
1-4
-alkyl)-amino, or phenyl, which is optionally substituted with hydroxyl, halogen, C
1-4
-alkyl or C
1-4
-alkoxy,
R
9
signifies C
1-18
-alkyl, which is optionally substituted with hydroxyl, halogen, C
1-4
-alkoxy, C
1-4
-alkylthio or di-(C
1-4
-alkyl)-amino, or phenyl, which is optionally substituted with hydroxyl, halogen, C
1-4
-alkyl or C
1-4
-alkoxy, and
m signifies 0, 1 or 2.
The alkyl radicals which occur may be linear or, if they contain three or more carbon atoms, may also be branched or, if they contain six or more carbon atoms, may also be cyclic.
R
7
stands preferably for chlorine or C
1-4
-alkyl. When m signifies 2, the two R
7
substituents may have equal or different significances, in which latter case it is preferable for the second R
7
to signify methyl.
When m signifies 1 or 2, one R
7
is preferably in para-
Daus Rainer
Grimm Roland
Heller Jörg
Mura Jean-Luc
Bisulca Anthony A.
Boyer Charles
Clariant Finance (BVI) Limited
Hanf Scott E.
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