Патент USA US2123572код для вставки
Patented July 12, 1938 2,123,572 UNITED STATES PATENT OFFICE areas-1a MO'I‘HPROOFING COMPOSITION Henry Martin and Rudolf Hirt, Basel, Switzer land, assignors to the ilrm I. It. Geigy S. A., Basel, Switzerland No Drawing. Application May 1, 1937, Serial No. 140,265. In Switzerland May 9, 1936 8 Claims. (Cl. 187-37) According to the present invention, textiles and feathers and the like by impregnation from dam rendered moth-proof by treating them with mix age by moths. Even when used in very small concentrations they impart a su?icient protec tion to the treated materials. In practice they 5 tures or solutions ot'thianthrene and its deriva 5 tives and substitution products. These agents are used in the manner customary for insecti will be used principally in the form of solutions cides. in water or cheap organic solvents such as hy - Many compounds of the thianthrene series ' ed, for example, for protecting wool, hair, fur, other materials liable to damage from moths are suitable for use in the’invention are known. The * 10 following are some of them; they are given by way 01' example and the invention is not limited to their use: ‘ , Thianthrene or 2:6-dimethylthianthrene (Be richte, Vol. 29, pages 437-8.); 1:3:527-tetra 15 methylthianthrene (Berichte, Vol. 22, page 910); 2-chlorothianthrene or 2:7-dichlorothianthrene (Annalen der Chemie, Vol. 381, pages 327 and 329) ; 2:7-dichloro-3z6 - dimethyl - thianthrene, 4:5 - dichloro -_ 1 :8 - dimethylthianthrene, thian 2° threnedicarboxylic acid or dimethoxythianthrene drocarbons, chlorinated hydrocarbons. alcohols, ketones or the like, or mixtures thereof. The goods to be protected may be treated by brush- 1o ing or spraying or impregnated by immersion. Furthermore, the thianthrenes may be emulsi fled in oils, fats or creams, or they may be used as additions to powders and, indeed, in all the i'orms usual for insecticides. They may likewise 15 be used in combination with other agents already known for the same purpose. The following example illustrates the inven tion, the parts being by weight: 20 parts of thianthrene or another-of the com- 20 (Chem. Zentralblatt, 1922, Vol. I, page 818): pounds above-named, such as dimethylthian 2 : 3 z 6 : 7-tetramethoxythianthrene (Annalen der threne, dichlorodimethylthianthrene or thian threne-S-oxide, are dissolved in 980 parts of al Chemie, Vol. 468, pages 162-201, Chem. Zentral blatt, 1929, Vol. I, Page 1944) ; dinitrothianthrene cohol. Furs, feathers or wool are immersed in . 25 (Bull. de la Soc. Chimique de Paris, Ser. 3, Vol. , the solution and then centrifuged and dried. The 25 15, page 423); 3-nitro-6-methylthianthrene, 3 goods thus treated are immune from damage by nitro-8-methoxy-5-methylthianthrene, 8-chloro moths. Even more dilute solutions sumce to im 3-nitrothianthrene, part a satisfactory protection. 5:8-dichloro-3 - nitrothian threne or 3-amino-6-methvlthianthrene hydro 30 chloride (Chem. Zentralblatt, 1924, Vol. I, pages 1035-8); thianthrenesulphonic acid (U. S. Speci ?cation No. 1,589,390 and Chem. Zentralblatt, 1927, Vol. 1, page 360) ;. naphthianthrene (Be - What we claim is : ' 1. A moth-proo?ng composition containing as 30 442); 2:6-dimethylthianthrene-S-oxides (Be its essential active ingredient a thianthrene. 2. A moth-proo?ng composition containing as its essential active ingredient a thianthrene-S oxide. 8. A moth-proofing composition containing as 35 its essential active ingredient a thianthrene sub stituted by at least one halogen atom. 4. A moth-proo?ng composition containing as its essential active ingredient thianthrene-S-. , oxide. 40 5. A moth-proo?ng composition containing as richte, Vol. 42, page 1174); 2:3:8z7-tetrameth oxythianthrene-S-oxides (Annalen der Chemie, its essential active ingredient dichloro-thian threne-S-oxide. richte, Vol. 42, page 1175) and so on, also the S 35 oxides of the above compounds, for example: Thianthrene-S-oxide (Annalen der Chemie. Vol. 381, page 321); thianthrene-S-dioxide (Be richte, Vol. 44, page 758); thianthrene-monosui phone (Annalen der Chemie, Vol. 381, page 823) ; 4o thianthrene-di-sulphone (Berichte, Vol. 29, page Vol. 468, pages 162-201, and Chem. Zentralblatt, 6. A moth-proo?ng composition containing as 45 1929, Vol. I, page 1944) and so on, or thianthrene- _ its essential active ingredient dichloro-thian- 45 S-disulphides, . for example 3:7-dimethoxy-2z6 dioxythianthrene disulphide (Chem. Zentralblatt, Vol. II, page 898) and the like. , The aforesaid thianthrenes are excellently suit threne. HENRY MARTIN. RUDOLF H'm'r.