Abstract:
Lactones of the formula ##STR1## wherein R is hydrogen or a CX.sub.3 group, and each X is a chlorine or bromine atom, are converted to the known cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acids or lower alkyl esters, from which pyrethroid insecticides are obtained.
Abstract:
A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.
Abstract:
A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.
Abstract:
Novel intermediates for production of insecticidal cis-3-(2,2-disubstituted-ethenyl)-2,2-dimethylcyclopropanecarboxylates, processes for preparing the intermediates, and processes for preparing the final product insecticides via a novel bicyclic lactone intermediate are described and exemplified.
Abstract:
Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan-2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified. The halomethyl bicyclic lactone is a useful intermediate for the preparation of insecticidal cis-3-(2,2-dihaloethenyl)-2,2-dimethylcyclopropanecarboxylates or cis-3-(2-halo-2-trihalomethylethenyl)-2,2-dimethylcyclopropanecarboxylates.
Abstract:
Lactones of the formula ##STR1## wherein R is hydrogen or a CX.sub.3 group, and each X is a chlorine or bromine atom, are converted to the known cis-3-(2,2-dihalovinyl)-2,2-dimethylcyclopropanecarboxylic acids or lower alkyl esters, from which pyrethroid insecticides are obtained.
Abstract:
Novel intermediates for production of insecticidal cis-3-(2,2-disubstituted-ethenyl)-2,2-dimethylcyclopropanecarboxylates, processes for preparing the intermediates, and processes for preparing the final product insecticides via a novel bicyclic lactone intermediate are described and exemplified.
Abstract:
A laminated safety glass structure which comprises at least two glass sheets bonded to each other through an interlayer of a plasticized polyvinyl acetal resin treated with a specific modified siloxane alone or together with a specific alkali metal or alkaline earth metal salt of an organic mono- or di-carboxylic acid. This structure has a highly improved penetration resistance along with superior transparency, aging resistance and weatherability, and is suitable for use as windowpanes in transportation facilities and buildings.
Abstract:
A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.