Plastic halocarbon

Halocarbon plastics Group of plastics composed of resins generated... 

Halocarbon plastics Group of plastics composed of resins generated from the polymerization of monomers consisting of a carbon and a halogen or halogens. 

Halocarbon plastic ha-b- kar-b9n- (1950) n. A term fisted by ASTM (D 883) to mean a polymer containing only carbon and one or more halogens. The primary members of the family are the chlorofluorocarbon and fluorocarbon resins. 

Biological methylation of antimony has not been demonstrated directly by use of experimental organisms. However, methylstibonic acid and dimethylstibinic add were found in fact in marine and estuarine environment . There is no obvious thermodynamic barrier to biomethylation. The chemical similarity between Sb and Sn, Pb, As, Se and Te, which surround Sb in the periodic table, and all of which have been shown to be subject to biomethylation, would suggest the existence of a biomethylation pathway also for antimony. This possibility assumes importance when the current extensive use ca 2 X lO kgy" in United State and ca lO kgy in Japan) of inorganic and organic antimony compounds in conjunction with halocarbons in fire retardant systems is considered. Products containing antimony-hased fire retardant systems include textiles, plastics, elastomers, paper, wood, paints and coatings. ... 

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