US2128189A - Mothproofing fabrics - Google Patents

Description

Patented Aug. 23, 1938 MOTHPROOFING FABRICS Lindley E. Mills and William W. Allen, Midland,

Mich, assignors to No Drawing. Applicationoctober 16, 1937 Serial N0. 169,471

Claims.

This invention relates to the protection of fur, hair, feathers, wool, etc. against the attack of It more particularly concerns the mothproofing of fabrics.

5 Some agents heretofore employed for mothproofing are capable ofattacking or stainingthe mothproofing agents are highly volatile and impermanent in nature treated material. Other out of woolen material and the like. 25 Among the objects of this invention 'is to prootherwise injuring the material.

We have discovered that the'above advantages can be obtained by employing mono phenyl-di (ortho-xenyD-phospha'te as a mothproofing (c1. z 1 5) an odorless water-white liquid boiling at 2739-275 0. at 0.5millimeter-.pressure and hav ing a specific gravity of 1.198 at 60/4 C. This .In the numerous testsvcarried out to establish 3 phosphate as and other maand to woolen resistant and clothes moth or the tapestry moth, and concen- The following examples are illustrative of cerv tain modes in which our invention may be ap' plied, hut are not to be construed as limiting the same.

' a Example 1 I r t A number. of samples of white wool mohair cloth were saturated with 3 and'5 per cent soluof mono-phenyl-di- (ortho-xenyl) -phosphate in ethyl alcohol, thereafter pressed to reof the black carpet beetlewere placed and the H "1 or other attack directlyattributable'to the beetle v relative cent. Examina- In each instance one of the 5 larvae was dead on the samples impregnated with 5 per cent phosphate solution. In the case over the same period upon mohpirtreated by 'iming, showed no discoloration. The preservative mersion in ethyl alcohol and-petroleum distillate showed no tendency to crystallize out or to volaand heavy feeding at the end of thethree-week Mono-phenyl-di-(ortho-xenyli -phosphate has a p r j b fin f undtojbe substantially non-toxic to hu- Example 2 mans and: animals. For example. 7 m city Samples of the impregnated mohair described gf fzggy ifizz gg'gtg ggagmgg in the foregoing example were thoroughly dried ofwthe m er mm m weight and then immersed and well washed in an excess f the a g g a is o of a 4 petroleum distillate dry-cleaning fluid. o m y m samples were dried. and exposed to cameflammable and has been'found of value for-rebeetle larvae as described in-Example 1. 'or the es g sem w if i Emmy mews-ted soiviiiii fi fifi -tiinyi-n (time 1t Percent P o h s lution, one sampl s 8- "xenyll-phosphate forming solutions which may no feeding at the end of two-weeks, .with very- I a a slight feeding at the endof three weeks m i g g wands b v fbq a cn' w v: 2:33: ii' t fiimp is rigi-naliy irfi piez @nmmm swede mimemwith a 5 per cent Phosphate solution showed no gg gffg ggfig fi a 'mfig: feeding at the end of three weeks. 7 .7 I hols such-as methyl and isopropyl aic oi; etc.

- x mp 3 Perfumes, coloringagents and the I may be Samples of the woolen mohair fabric, followincimmted in f ot n in'g impregnation as describedinllixample 1 with a 3 and 5 per cent solutions of'mono-Pheny1 di- Q gm xg mkg wfi g j '(ortho-xenyD- hosphate, were-dried and therem z after weathered out-of-doors for a number of ,9 9 compo- FTW 'Y' 9, 9'3- days e pos d to sun,.wind, and rain. when care, WQfiWPPbfi i m i'vw 'm' d beetlelarvae wereintroducedinto these' same $3?? 75 x eanins Dies, none of them showed any feeding after: nt r m :3 three weeks'incubation. with; f m 4 n w r by Samples of the im regnated woolen mohair, A Pmcessmr m 9 n c5 afterdrying, were thofioughly washed in a 0.5 per a fi o h ma er a bject to attack by moths cent solution of Ivory soap in water at a tempera-i Ym treating such material h hire of 0. After 20 minutes contact with the 1 aa h ienn o h soap solution, these test samples were m A process for -mothbrooflng woolen fabrics running water and dried. Upon infestation with and materials subject to a by mom 40 the carpet beetle larvae, it was found that after' which 9 3 treating such mater! with two weeks incubation none of the impregnated v flonllwmpmmfl mono? 'Q'Q samples were attacked, while after three weeks Wyn-Phosphate d in an 9 .only one of the samples showed a very slight in- PW:

ury which might have been attributable to at- A process for moihpmflnfl mien i: tack by the larvae. and other materials subject to attack by moth! which "comprises treating such materials with a Example 5 com osition comprising mono-phenyl-dir-(ortho- In a similar mannerwoolen cloth was impreg- 'P p dissolved in a lower fl pb hated with a 5 per cent solution of mono-phenylalcohol. v 5 .di-..(ortho.-xenyl)-phosphatein "carbon tetra 4-. 'A process for mothproofing woolen fabrics weeks, the

impregnated cloth- -was a by the larvae after one week, moderate feeding after two weeks,

chloride. Following infestation with the black larvae carpet beetle and incubation for three cloth was found to be unattacked by thebeetle larvae and to be unaltered as regards hysical characterist cs.

In the foregoing and the fabric itself was notexamples no stainingmt'tne the impregnated fabric, nor was the the tilize from fabric greasy or oily to and other materials subject to attack by moths which comprises trea a composition comprising mono-phenyl-di-(orthoxenyl) -'phosphate,diss0lved in a liquid chlorinated hydrocarbon.

teriall with'a 5. A compositions-consist ng of material liable thereil to attack by moths; havingincorpora mono-phenyl-di-(ortho-xenyn- INDLI B 1011.8.-