Władysław Charmas

Thioetherglycidyl resins: Synthesis, structure, and properties of glycidyl thioethers of aliphatic, aliphatic-aromatic, aromatic dithiols, and epichlorohydrin

The structure of thioetherglycidyl resins diglycidylthioethylformal [DGTEF]; (1-glycidylthiomethyl)napthalene [1-GTMN]; 1,4-di(glycidylthiomethyl)-naphthalene [1,4-DGTMN]; 1,5-di(glycidylthiomethyl)-napthalene [1,5-DGTMN]; mixture 1,4-and 1,5-[DGTMN]; bis-(4-glycidylthiomethyl-phenyl)ether [BFTMPE]; bis-(4-glycidylthiomethyl-phenyl) methane [BGTMPM]; [4,5-di(glycidylthiomethyl)-o-xylene] [o-DGTMX]; [4,6-di(glycidylthiomethyl)-m-xylene] [m-DGTMX]; [2,6-di(glycidylthiomethyl)-p-xylene] [p-DGTMX]; glycidylthiophenyl [GTPh]; glycidylthio-p-tolyl [GTMPh]; glycidyl-p-chlorothiophenyl [GTCIPh]; 1,4-di(glycidylthio)naphthalene [1-5-DGTN]; 1,5-di(glycidylthio)napthalene [1,4-DGTN]; bis(4-glycidylthiophenyl)ether [BGTPhEe]; bis(4-glycidylthiophenyl)-methane [BGTPhE]; bis(4-glycidylthiophenyl) sulfide [BGTPhS] and bis(4-glycidylthiophenyl)sulfone [BGTPhSO 2 ] was determined from chemical investigations and elemental as well as IR and 1 H-NMR spectra analyses. Essential technological and processing properties such as viscosity, reactivity and thermal resistance were determined. The oxirane ring opening under the influence of temperature was examined based on model systems, mainly on glycidylthiophenol. The reaction products were separated and the structure of isolated compounds was determined by means of chromatographic and IR, 1 H-NMR and 13 C-NMR spectral methods

Thioetherglycidyl resins. Curing of aliphatic, aliphatic--aromatic, aromatic thioetherglycidyl resins with aliphatic amine and acid anhydrides

A main aim of the investigations was to determine the relations between structure and composition of cured substances, their stability and thermo-mechanical properties. Two kinds of thioetherglycidyl resins are used. In the first case thioether sulfur is directly bonded with the aromatic ring of naphthalene, isomeric xylene, diphenyl, combinations of diphenylmethane, diphenyloxide, diphenylsulphone, diphenylsulphide types and in the second case sulfur is bonded with the above mentioned compounds through the methylene group. Groups of thioetherglycidyl resins combined directly with the aromatic ring show greater reactivity with the amine curing agent compared with the aliphatic-aromatic systems. In the systems with the curing agents of acid anhydride type this dependence is reversed. Some properties were determined of the resin cured chemically as well as the compositions of thioetherglycidyl and commercial resins of diglicidylether of bisphenol-A.