Abstract:
Insecticides containing as active agent an insecticidally effective amount of a compound represented by the following general formula I
wherein R is hydrogen or t-butyl, with the proviso that the hydroxyl group is in the ortho position with respect to R and at least one t-butyl group is present in the ortho position with respect to the hydroxyl group, are provided. They are effective in combatting larval forms of mosquitoes.
Abstract:
2,6-DI-TERT.-BUTYL-4-CUMYL PHENOL IS PRODUCED BY REACTING P-CUMYL PHENOL WITH ISOBUTYLENE, AT A REACTION TEMPERATURE OF FROM 40 DEG TO 120 DEG C. in the presence of from 0.01 to 20% by weight of p-toluene sulfonic acid based on the weight of the p-cumyl phenol. Isobutylene is charged into the reaction system at a high rate and is always present in the reaction system during the reaction. A substantially 100% conversion of p-cumyl phenol is attained and the weight ratio of 2,6-di-tert.-butyl-4-cumyl phenol/2-tert.-butyl-4-cumyl phenol in the reaction product is greater than 10, while splitting off of the cumyl group at the para position is suppressed.
Abstract:
Title of the Invention PROCESS FOR PRODUCTION OF PHENOLIC RESIN A process for producing a phenolic resin comprising condensing a phenol component and an aldehyde component, characterized in that the phenol component comprises (highmolecular-weight phenolic compounds which are left after bisphenol A-containing by-products formed in the production of bisphenol A by condensing acetone and phenol in the presence of an acid catalyst are treated at a high temperature of at least 150.degree.C in the presence of an alkaline catalyst to remove low-boiling components therefrom.
Abstract:
The invention is the use of the compound 3,5-di-t-butyl-4-hydroxydiphenylmethane as an insecticide. The compound is particularly effective in combatting larval forms of mosquitoes.
Abstract:
Novel compounds represented by the following general formula I (I) wherein R is hydrogen or t-butyl, with the proviso that the hydroxyl group is in the ortho position with respect to R and at least one t-butyl group is present in the ortho position with respect to the hydroxyl group, are provided. They are effective in combatting larval forms of mosquitoes.
Abstract:
2,6-DI-TERT.-BUTYL-4-CUMYL PHENOL IS PRODUCED BY REACTING P-CUMYL PHENOL WITH ISOBUTYLENE, AT A REACTION TEMPERATURE OF FROM 40 DEG TO 120 DEG C. in the presence of from 0.01 to 20% by weight of p-toluene sulfonic acid based on the weight of the p-cumyl phenol. Isobutylene is charged into the reaction system at a high rate and is always present in the reaction system during the reaction. A substantially 100% conversion of p-cumyl phenol is attained and the weight ratio of 2,6-di-tert.-butyl-4-cumyl phenol/2-tert.-butyl-4-cumyl phenol in the reaction product is greater than 10, while splitting off of the cumyl group at the para position is suppressed.
Abstract:
1434876 Diphenylmethane derivatives MITSUI TOATSU CHEMICALS Inc 24 May 1974 [28 May 1973] 23436/74 Heading C2C Diphenylmethane derivatives of the general formula in which R is hydrogen or t-butyl, with the proviso that the hydroxyl group is in the ortho position with respect to R and at least one tbutyl group is present in the ortho position with respect to the hydroxyl group. The compounds have insecticidal properties.
Abstract:
Chemically stable p-isopropenyl phenol is produced in the form of a solution by contacting p-isopropenyl phenol, in the form of a gas or a liquid obtained immediately after condensation of said gas, with a polar solvent such as an alcohol, an ester, or an acid amide. The resultant solution of p-isopropenyl phenol can be used as the starting material for subsequent reaction to obtain useful compounds such as hydroquinone. Alternatively, p-isopropenyl phenol may be isolated in crystalline form by adding to the solution a poor solvent for the phenol such as water, or by cooling the solution.
Abstract:
Chemically stable p-isopropenyl phenol is produced in the form of a solution by contacting p-isopropenyl phenol, in the form of a gas or a liquid obtained immediately after condensation of said gas, with a polar solvent such as an alcohol, an ester, or an acid amide. The resultant solution of p-isopropenyl phenol can be used as the starting material for subsequent reaction to obtain useful compounds such as hydroquinone. Alternatively, p-isopropenyl phenol may be isolated in crystalline form by adding to the solution a poor solvent for the phenol such as water, or by cooling the solution.