US1634792A - Mothproofing composition - Google Patents

Description

Patented July 5, 1927.

. UNITED, S A ES) PATENT F E- 1 manna. o. manrr, or NEW YORK,N. y assrsuoa, BY m assrenmmrs mo THE Lanvnx Yonx.

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This invention relates to the'moth'proofing of woolens,,more especially after they leave the mill and either before or, after they are made into clothing or other articles. In the moth proofing'of woolens, it is the aim to impregnate the wool fibers with solutions which will render them immune to the attack ofthe mothlarvae. These solutions generally contain a toxic substance of suitable character, anyone of several of which mav be employed. t

Ca reful study and research have convinced me, however, that although the solution to be usedmay contain a thoroughly satisfactory toxic substanc'e,fit may nevertheless be wholly impracticalorjineflicient because ofthe fact that frequently woolens are encountered which repel the moth proofing solution to such extent that proper imp'regnation of the woolens by such solution does not take'place. f Qj My observations have convinced me that one of the most important considerations in the moth proofing of woolens is toinsure thorough distribution of the solution throughout the goods under treatment in order that thorough impregnation of such woolens by the moth'proofing solution will result.

I have experimented with many moth proofing solutions containing compositions which would thoroughly. protect woolens against the attack of moth larvw, if it were possible to properly impregnate such woolens with these solutions, but, 1n many instances, such solutions would not wet the fibers nor impregnate them to the extent necessary to a ermanent moth proofing.

t is not uncommon to find fibers of woolens covered or coated with different materials such as grease or wax, etc. which interfere with the interaction of the moth CORPORATION, or BROOKLYN, NEW YORK, a oonrona'rrou or-maw I w 7 no'rnrnoormo ooMros'IrIoN. 7

Application filed June '24, 1924. Serial x 722,064; R

the moth proofing solution should have some aflinity toward the materials to be streated so that it can attack them, even though slightly, by chemical and physical interaction wlththe fibers, the coating, or both combined Aside from these considerations, it should be borne in-mind that when treating finished woolens, the moth proofing operation must be carried on in an expeditious manner. -In other words, it; is important thatthemoth proofing solution can be applied quickly, as by spraying or spongin and'the goods permitted to immediately ry, in contradistinction toa prolonged treatment such, as might be obtained by prolonged immersion. It therefore becomes 'imperativeithat-the solution be so constituted as to impregnate the fabric immediately upon being deposited thereon, in order to efficiently fulfill; commercial requirements. I

' With'these considerations in mind, I have concluded that in the compounding of a moth proofing solution, it is of primary importance to insure proper impregnation of the woolens, since unless thorough impregnation is possible proper moth proofing connot be obtained irrespective as to what toxic substance is used.

The object of the present 'invention'there fore is primarily to providea moth proofing solution which will embody a carrier or vehicle constituted to rapidly impregnate woolens and serving the purpose of conveying or carrying the toxic into intimate physical and chemical cooperation with the woolen fibers in order that efi'ective and durable moth proofing may result.

I have found that a very satisfactory carrier or vehicle, well adapted for the wetting of woolens, ma be obtained, through em ployment, as a ase, of a solution of an oranic colloid or combination of colloids uch a solution wilk rapidly im regnate woolens and will carry a moth proo ng toxic compounded therewith into intimate physical. and chemical interaction with the woolen fibers.

In carrying out the invention inpractice, it is desirable that the organic colloid solution be stable and any suitable colloid may be employed together with any suitable toxic substance. I have found that organic acids of the fatty acid series and their salts besuch acids, but, for t duce. )etter carryingellects, but it the concentration is too high the appearance of: the treated woolens W11 be impaired.

I have found it advantageous to use a small percentage of gelatine in admixture with the oleate, in order toimpart advantageous stability to the solution, and, in practice, approximately .OUi'if/n of gelatinc will give satisfactory results.

One formula which may he employed, although obviously not the exclusive one embodies: .1% sodium oleate, .0059}; gelatine; and, 1% sodium fluoride.

I have further found that by adding to this solution a small and definitely determined amount of free organic acid the composition will be improved both from the standpoint of good wetting and also for in creasing thepermancncy oi the treatment. For example, the preferred com 'aisirion, though not the exclusive one, may he as follows: )1 sodium oloate, loii'ur gclatine, 1% sodium fluoride; and, .OOtfik citric acid.

The strengths or concentration of the above constituents may var y without departing from the invention.

1 wish to emphasize that the formulae which have been specifically cnumcraimi. are only illustrative and do. not dclinc the limits of this invention, which, broadly stated, consists in the employment in a moth proofing composition of an organic colloid solution which serves as a carrier or vehicle to carry a solution of 1% function properly in the protection of the fabric against the ravages of the moth larvae. For these reasons, it is to be understood that the invention is not restricted to the specific illustrative examples given but that it is as broadly novel as is commensurate with the appended claims.

Having thus fully described the invention, What I claim as new and desire to so cure by Letters Patent is: y

1. A moth proofing composition containing sodium oleate, gelatine, and a soluble fluoride.

2. A moth proofing composition containing sodium oleate approximately 1%, elatine approximately .0057), and sodium uoride approximately 1%.

3. A moth proofing composition containing a soluble organic colloid, a toxic substance, and an organic acid.

t. A moth proofing composition containing a soluble organic colloid, a. toxic substance, and an organic acid in a quantity not exceeding .0170.

5. A moth proofing composition containing sodium oleate approximately .1 tine approximately ,UUiiHp, a soluble fluoride approximately mately .0O4%.

(5. A moth proofing composition containing sodium oleate approximately 1%, gelatine approximately 005%, sodium fluoride approximately 1%, and citric acid approximately .004;%.

in testimony whereof I have signed the foregoing specification.

MICHAEL G. MINAEFF.

1%, and citric acid approxi-'