US2246511A - Textile material - Google Patents

Description

Patented June 24, 1 941 TEXTILE Muslim.

Paul Esselmann, Wolfen, Kreis Bitterfeld, and Karl Kiisslinger and Joseph Diising, Dessau, Germany, assignors, by mesne assignments, to Walther H. Duisberg, New York, N. Y.

No Drawing. Application December 29, 1937, Se-

rial No. 182,250. In Germany January 6, 1937 2 Claims.

The present invention relates to the production of artificial fibers and more particularly to the production of artificial fibers from cellulose having substantially the same affinity for acid dyes as for instance wool.

In our copending application Ser. No. 182,248 filed on the same day as this application we have disclosed a method of producing condensation or polymerization products by reacting alkyleneimines, polymeric alkyleneimines and mixtures thereof with non-metal sulfides, such as for instance carbon disulfide, thiophosgene and sulfur chloride.

The condensation is preferably carried out in an aqueous medium. The reaction generally sets in spontaneously or it may be influenced catalytically by heating or by addition of acid or alkaline catalysts.

It is an object of the present invention to provide artificial fibers from cellulose and cellulose derivatives having afiinity for acid dyes.

A further object is to provide artificial fibers containing both sulfur and nitrogen.

A further object is the provision of a new and improved process for the production of fibers of the kind described.

Further objects will be apparent from the detailed specification following hereinafter.

The invention is based on the observation that improved fibers, films, foils, bristles and like ma- I terials may be obtained if the polymerizates of which a more detailed description is to be found in the aforesaid copending application are introduced into the spinning or casting solutions in finely subdivided state.

A suitably fine state of subdivision may be obtained by powdering the insoluble polymerizates or by preparing an emulsion therefrom. The grain size of the powder may vary according to the kind of fibers to be produced, for instance they may be of the size usual for producing a delustering effect. The powder may be ground until a grain size of 0.5 to 1;; is obtained.

Suitable emulsions may be made, for example, as follows:

1. 1 kilo of ethyleneimine base of 15 per cent strength is mixed with 250 grams of any suitable dispersing agent. To the mixture there are added by drops while stirring strongly and at the same time cooling 270 grams of carbon disulfide.

The yellowish white emulsion which has stood for some time deposits a yellowish mass which is separated from the liquor by siphoning oil the latter. Of this siphoned thinly liquid emulsion one half, about 400 grams, are well stirred with 600 grams of viscose. This emulsified viscose is introduced into a further 9.4 kilos of viscose. The viscose thus obtained filters well and has good spinning properties.

In like manner the concentrated emulsion may be added to a copper oxide ammonia spinning solution.

2. 100 grams of gelatin are dissolved in 2 liters of water at 50 C. and the solution is cooled to 30 C. There are then added to this gelatin solution while stirring 2 liters of a solution of 15 per cent strength of ethyleneimine or N-methylethyleneimine. 600 cc. of carbon disulfide are then added while cooling and stirring. 1 liter of the emulsion thus produced is added to 5 liters of viscose. the cellulose content of which is preferably such that after the addition of the emulsion it corresponds with the usual content of cellulose.

This spinning solution, which can be worked up to artificial fibers in the usual manner, has good spinning properties and yields fibers which in appearance and their physical constants (extensibility, tensile strength etc.) do not differ from the usual cellulose fibers, but distinguish therefrom in that they may be dyed by wool dye stuffs as well and as easily as wool.

In dye baths which may contain, for example, 2 per cent of dyestufi" calculated on the Weight of the fiber the fibers obtained in accordance with this invention may be directly dyed equally as well as wool, for example with the following acid wool dyestuffs: Suprammine Red B or GG (Schultz Farbstofftabellen, 7th ed., vol. II, page 203), Anthralan Red 33 (Schultz Farbstofitabellen, 7th ed., suppl. vol., page 68), Guinea Light Blue (Schultz Farbstofftabellen, 7th ed., suppl. vol., page 98), Palatine Fast Blue (Schultz Farbstofitabellen, 7th ed., vol. II, pag 168), Guinea Bordeaux G (Schultz Farbstofftabellen, 7th ed., vol, 11, page 113), Metachrome Bordeaux (Schultz Farbstofftabellen, 7th ed., vol. 1, page 68).

The fibers are especially suitable as substitutes for W001 and for producing mixed fabrics with wool which are to be dyed in a single bath. The fibers made and dyed in accordance with the invention have good fastness to washing. Also, dyestuffs which must be afterchromed may be used with good result, for example Fast Mordant Blue B (Schultz Farbstoiitabellen, 7th ed., vol. II, page 91), Chrome Fast Blue 613A (Schultz Farbstofitabellen, 7th ed., suppl. vol., page Vegan Black R. (Schultz Farbstofitabellen, 7th ed., suppl. vol., page 143), Chromogen Violet B (Schultz Farbstoiftabellen, 7th ed., suppl. vol.,

page 81), Acid Chrome Green G (Schultz Farbstofitabellen, 7th ed., vol. II, page 188).

What We claim is:

1. Artificial textile materials consisting chiefly of a. compound selected from the group consisting of cellulose hydrate, a cellulose ester, and a cellulose ether, but having substantially the same affinity for acid wool dyestufi as wool, said textile materials containing finely dispersed therein a mixed polymerizate from ethylene imine and carbondisulfide.

2. A method of producing fibers consisting chiefly of cellulose hydrate but having substan tially the same afiinity for acid wool dyestuffs as wool which method comprises adding to the solution from which said cellulose hydrate fibers are to be spun a mixed polymerizate from ethylene imine and carbondisulfide, said mixed polymerizate being in the form of an insoluble pigment of a grain size of about 0.5 to 1;.

PAUL ES SELMANN.

KARL KOSSLINGER.

JOSEPH DiiSING.