Patent GB-635846-A (GB)
Title: Insecticidal compositions
IPC: A01N65/00
Filed: 1947-07-30
Abstract: An insecticidal composition comprises a pyrethrin-bearing material, a petroleum oil and a phenol-aldehyde resin which is soluble in the petroleum oil and dissolves the said pyrethrinbearing material, the phenol having a long hydrocarbon chain of 4 to 26 carbon atoms on its nucleus.  Such phenols are: (a) naturally occurring in the juice of plants of the Anacardiacial family, e.g. cashew nut shell liquid, marking nut shell liquid and juice of Japanese lac plant, which may be used as p  such or in the form of the phenols separated therefrom, e.g. anacardic acid, cardol, anacardol and urashiol; derivatives thereof, e.g. cardonol (see U.S.A. Specification 2,098,824); hydrogenated products; acetic acid derivatives (e.g. cardonoxy acetic acid and acetates); acid treated cashew nut shell liquid and polymerized cashew nut shell liquid; and (b) phenols having from 4 to 20 carbon atoms in one or more groups on the nucleus but with at least one of the readily-reactive positives (ortho and para) unoccupied, e.g. p-tertiary-butyl phenol and lauric phenol. The aldehyde used to prepare the phenolaldehyde resin is formaldehyde, paraformaldehyde, paraldehyde, acetaldehyde, furfuraldehyde and hexamethylene tetramine.  Specified petroleum oils are kerosene, gasoline, fuel oil, petroleum and spray oil of 70 to 95 seconds Saybolt at room temperature.  The compositions may contain one or more of the above phenol-aldehyde resins with or without the further addition of rotenone.  Emulsions miscible with water are also provided.  According to examples: (a) one molecule of cardanol and 1/2 to 1/4 molecules of formaldehyde are refluxed at 205 DEG  C. with ammonia for one hour and the product so formed dehydrated; (b) one molecule of p-tertiary amyl phenol and 1 to 1 1/4 molecules of formaldehyde are added to sufficient sodium hydroxide solution at 125 DEG  F. to dissolve the phenol and allowed to stand 48 hours at room temperature, after which the product is neutralized and dehydrated. Specification 627,925 is referred to.  The Specification as open to inspection under Sect. 91 comprises similar phenol-aldehyde resin and petroleum oil compositions containing rotenone material alone, e.g. derris root extract, derris resinate, barbasco, cube, timbo and pure rotenone.  This subject-matter does not appear in the Specification as accepted.ALSO:an insecticide composition comprises a pyrethrin bearing material, a petroleum oil and a phenol-aldehyde resin which is soluble in the petroleum oil and dissolves the said pyrethrin bearing material, the phenol having a long chain hydrocarbon substituent of 4 to 26 carbon atoms on its nucleus.  Such phenols are (a) naturally occurring in the juices of plants of the Anacardiaceae family, e.g., cashew nut shell liquid, marking nut shell liquid and juice of Japanese lac plant, which may be used as such or in the form of the phenols separated therefrom, e.g. anacardic acid, cardol, anacardol and urashiol; derivatives thereof, e.g., cardanol (see U.S.A. Specification 2,098,824); hydrogenated products; acetic acid derivatives (e.g. cardonoxy acetic acid and acetates); acid treated cashew nut shell liquid and polymerized cashew nut shell liquid; and (b) phenols from the butyl phenols to phenols having 20 carbon atoms in one or more groups on the nucleus, but with at least one of the readily reactive positions (ortho and para) unoccupied, e.g. p-tertiary butyl phenol and lauric phenol.  The aldehyde used to prepare the phenol-aldehyde resin is formaldehyde, paraformaldehyde, paraldehyde, acetaldehyde, furfuraldehyde or hexamethylene tetramine. Specified petroleum oils are kerosine, gasoline, fuel oil, petrolatum and spray oils of 70-95 seconds Saybolt at room temperature.  The compositions may contain one or more of the above phenol-aldehyde resins with or without the further addition of rotenone.  They may be applied as such or in the form of emulsions which may be diluted with water.  Specification 627,925 is referred to.  The Specification as open to inspection under Sect. 91 comprises similar phenolaldehyde resin and petroleum oil compositions containing rotenone material alone, e.g. derris root extract, derris resinate, barbasco, cube tinbo and pure rotenone.  This subject-matter does not appear in the Specification as accepted.