Derivatives of N-oxiranemethane N,N,N-trialkylammonium, their pr

Details Derivatives of N-oxiranemethane N,N,N-trialkylammonium, their pr Derivatives of N-oxiranemethane N,N,N-trialkylammonium, their pr

1983-04-11

1987-03-24

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

8188, 424 78, 424 80, 424 81, 525426, 525430, 525445, 525455, 525502, D06M 1300, A61K 3174, C08F28304

Patent

active

046522670

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to salts of new derivatives of N-oxiranemethane N,N,N-trialkylammonium, their preparation method, their use in treatment of polyhydroxylated and polyaminated polymers so as impart to the polymers permanent bacteriostatic and/or fungistatic properties, and to the products thus treated.
More precisely, the compounds are used in the finishing of textile articles such as woven and knitted fabrics, nonwovens, cellulose based materials, for example in the form of cotton, viscose, rayon, polynosic, linen, jute or ramie, or synthetic polymer based materials such as polyamides 6, 6/6, 11, aramides or cellulose acetates.


BACKGROUND OF THE INVENTION

For textile articles, such finished products could be obtained hitherto only temporarily by adjunction of cationic products, more or less substantive or direct at the moment of using the last rinsing bath.
Such a technique can lead to three major disadvantages:
It is well known that the textile materials form a favourable medium for the development of microorganisms due to their porous and discontinuous structure. Textile fibres are in a fairly large proportion part of the modern environment: clothing, beddings, bathroom linen, hangings, lining of footwear, etc . . . . It is for this reason that researches have been carried out in order to impart to such articles permanent bacteriostatic and/or fungistatic properties, withstanding successive washing and sterilizing operations.
The method more currently used for avoiding the undesirable development of microorganisms in textile materials consists in carrying out a disinfection by the standard or dry cleaning method. It is known that washing with cold water alone is inefficient for destroying the noxious germs and that disinfecting baths are advocated even after boiling. Moreover, it proves that a frequent washing is not always possible in many cases, notable when it concerns articles used by military services in the field, personnel living in confined spaces such as hospitals, day-nurseries or hotels, or persons travelling extensively and for long periods. On the other hand, some textile articles such as blankets, tapestries, and curtains are irregularly and even never cleaned. Studies have demonstrated that such articles can accumulate a large quantity of germs, which are morbific and generators of unpleasant smells. Other works have demonstrated that noxious bacteria migrate easily from contaminated articles onto others, during washing. The control of the bacterial development is of primary importance, not only with a prophylactic purpose but also for preventing the emergence of unpleasant smells.


SUMMARY OF THE INVENTION

The object of the present invention is to remedy such disadvantages and it relates, to this effect, to new salts derived from N-oxiranemethane N,N,N-trialkylammonium, of the general formula: ##STR1## where R.sub.1 is an alkyl group having 1 or 2 carbon atoms, atoms, different textile materials by using the new compounds in order to impart to them permanent bacteriostatic and/or fungistatic properties, withstanding succesive washing and sterilizing operations.


DETAILED DESCRIPTION OF THE INVENTION

The method for the trement of textile materials by using the compounds hereabove defined is characterized in that the material to be treated is impregnated with a solution of one or several of the compounds, in a base such as soda, potash, sodium carbonate, sodium trichloroacetate; the material treated is spin dried, and then stored protected from air for at least three hours.
According to an alternative embodiment of the method, the storage protected from air is replaced by a drying operation by any appropriate means, followed by a period where the material is kept at a temperature higher than 80.degree. C.
The main interest of the treatment which is described in more detail hereafter resides in the permanency of the treatment by creating a covalent bond between the polymer and the salts of the derivatives of N-oxiranemethane N,N,N,-trialkylammonium

REFERENCES:
patent: 3652201 (1972-03-01), Bindler
patent: 4106903 (1978-08-01), Langheinrich et al.
patent: 4380453 (1983-04-01), Claiborne
patent: 4447243 (1984-05-01), Claiborne
Needles, H. L., Handbook of Textile Fibers, Dyes and Finishes, Garland STPM Press, N.Y., 1981.

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