US499690A

US499690A - Zinc res ist-mordant

Info

Publication number: US499690A
Authority: US
Publication date: 1893-06-13
Anticipated expiration: 1910-06-13

Description

NliED I States I I XE... Parent WILLIAM T. \VHITEHEAD, OF MAGOG, CANADA, ASSIGNOR OF ONE-HALF TO HENRY D. DUPEE, OF BOSTON, MASSACHUSETTS.

ZINC RESlST MORDANT.

SPECIFICATION forming part of Letters Patent No.499,696,{dated June 13, 1893.

Application filed February 21, 1893. Serial No. 463,249. (ltlo specimens.)

To aZZ whom; it may concern:

Be it known that LWiLLIAM T. WHITEHEAD, a subject of the Queen of Great Britain, residing at Magog, in the Province of Quebec, Dominion of Canada, have invented an linprovement in Resist-Mordants for Plain-Dyed Fabrics, of which the following is a specificadifferent color, and in accordance therewith i 5 my invention consists in printing a pattern or figure on the cloth in a resist-niorciant containing zinc as the essential or active element and thereafter dyeing the cloth a plain color, substantially as will be described.

In the practice of my invention, i take cotton, wool or silk fabric prepared for printing in any usual or Well known Way, and print thereon the desired pattern or figure in a resist-mordant to be hereinafter particularly described, dry the usual way-and steam as required. I then dye the cloth a plain color in a jig, dye-beck, padding machine, or in any of the Well known ways,and then develop and finish in the usual manner. The cloth so 0 treated will then present a plain colored ground with the pattern or figure displayed thereon in the same color,but of a shade contrasting with the ground.

In the course of my experiments I have 5 discovered that by using a rcsist-inordant containing zinc as the essential or active element thereof and printing the pattern or figure in such a resistniordant mixed with a proper thickener and thereafter dyeing the fabric a 40 plain color and finishing, the zinc in theorize ture will act to inordanta portion of the plain coloron the parts of the fabric covered by the resist-mordant, at the same time resisting some of the color on such portions, and the .5 result is the figured effect in two. different shades of the same color. The pattern or fig ure in this instance will be lighter than the ground Work. If a deep, dark shade of color is desired in the pattcrn,then that particular 50.00101 will be mixed with a resist-inordant proparatory to printing therewith, and when the cloth has been plain dyed the same color and finished, the pattern. or figure appears in a shade darker than the ground. In this i. stance the zinc appears to act as a niordant for the color carried by the mixture fixing it in the cloth in the desired pattern, While it also acts to resist a portionof the plain color in the subsequent dyein i I prepare the 1x sist-mordant mixture by taking about six pounds more or less of metallic zinc'in a finely divided state, or a zinc compound, such as zinc oxide, hydrate, or carbonate, to supply the zinc, which is the essential or active element, and it with one-half a gallon of water to which I one gallon of starch paste (one and one halt pounds per gallon) and one-half gallon of albuinen solution (six pounds per gallon) or any other usual. thickening preparation such as gum tragacantll or guin arahic. These ingredients are thoroughly mixed and the cloth is printed therewith. For the best results when metallic zinc is used it should be ground. to an irnpalpable powder and mixed with the y Water.

t the pattern orfigure is to he or" a darker shade than the ground I mix coal-tar tract or pigment color with tl'leforcgoinginirture in the proper proportion and quantity, So the same Varying according to the depth olf shade desired, the character of the pattern, particnlarnature of the color itself, etc. can also produce veryhcautiful effects loyrny process by making the color in the resist- 8 mordant and the color of the "round different, in which case the finished oth will have the pattern or ligure in one color and. the ground in another, and pattern and ground may or may not contrast in shade'as desired. c

in another concurrently pending application (Serial No. 458,530, tiled January 16, 1893), the use of zinc compounds to supplythe essential or active element, is described and specifically claimed. 1

i do not wish to restrict niyselt' to the exact proportion of the various ingredients com posing the mixture described, as the same can be varied without departing from the scope of my invention, the gist of which consists in producing a pattern or figure by the employment of a resist-mordant containing zinc as its essential or active element.

I claim-- 1 The process of producing cloth havinga pattern or figure thereon of a shade con trasting with the ground, which consists in printing the pattern or figure on the cloth in a resist-mordant containing zinc as the essential or active element, and thereafter-dyeing the cloth a plain color, substantially as de-- scribed. W

2. The proccssof producing cloth having a pattern or figure thereon of a shade darker than the ground color, which consists in printing the pattern or figure on the cloth in a re sist-1nordant containing zinc as the essential or active element, and a color, and thereafter plain dyeing the cloth in the same color, suhstantially as described.

3. The process of producing clothhavinga pattern or figure thereon of a color contrasting with the ground, which consists in printing the pattern or figure on the cloth in a resist-mordant containing zinc as the essential or active element,and a color, and thereafter dyeing the cloth in a plain contrasting color, suhstantiallyas described.

In testimony whereof I have signed my name to this specification in the presence 0t 30 .two subscribing witnesses.

WILLIAM 'I. \VIIITEHEAD.

W itnesses:

J AS. DOLPHIN, IIUGH JAMIESON: