A phenomenon of nonunifoim macroscopic chlorine distribution exists in chlorinated product of PE, which is chlorinated by a solid phase method. That is to say, a high chlorinated degree in outer part of the particle and alow chlorinated degree inside the particle, so the particle have a hard-shell-like structure.
Chlorine distribution and residual crystallinity in chlorinated product was also discussed by IR. Obtained CLLDPE having various chlorine content possess excellent phyzical properties respectivel in comparison with CHDPE and chloroprene rubber (CR).
The monooxygenation of cyclohexane by some substituted iodosobenzenes and iodosobenzene derivatives catalyzed by TPPMn(Ⅲ)Cl was different from that reaction catalyzed by TPPFe (Ⅲ)Cl. The electronic and steric effects of substituents in the substituted iodosobenzenes were not linear correlated to the yields of cyclohexanol (hydroxylated product); but were well linear correlated to the yields of chlorocyclohexane (chlorinated product).
It has been found that over alkali metal and hydrogen forms the only chlorinated product was methyl chloride, whereas in the presence of NH4Y zeolite both methyl and methylene chlorides were formed.
In a previous paper of this series of investigations the syntheses of p-, m- and o-[bis-(β-chloroethyl)-amino]-methyl-phenylalanine dihydrochlorides (Ⅱ, designated as AT-290, AT-582, and AT-581 respectively) by substituting one hydrogen atom of the methyl group of HN_2 with the phenylalanyl group, had been described. In this investigation, 2- and 3-[bis-(β-chloroethyl)-amino]-methyl-4-hydroxyphenylalanine dihydrochlorides (Ⅳ and Ⅴ, designated as AT-786 and AT-916 respectively) had been synthesized, however,...
A phenomenon of nonunifoim macroscopic chlorine distribution exists in chlorinated product of PE, which is chlorinated by a solid phase method. That is to say, a high chlorinated degree in outer part of the particle and alow chlorinated degree inside the particle, so the particle have a hard-shell-like structure.In this paper, the morphology of the High Chlorine Chlorinated Polyethylene (HCPE) had been determined by microscopy. It was shown that poor processing ptopetty a...
Chlorinated linear low density polyehylene (CLLDEE) was prepared by solid phase chloridization. Affect of chloridizing conditions (reaction temperature, chlorine Content and particle size of materials) on properties of the products was .studied. Chlorine distribution and residual crystallinity in chlorinated product was also discussed by IR. Obtained CLLDPE having various chlorine content possess excellent phyzical properties respectivel in comparison with CHDPE and chloroprene rubbe...