摘要:
A process for the preparation of polybrominated TMPI compounds, comprising reacting TMPI in the presence of a catalyst, in a solvent selected from the group consisting essentially of liquid bromine, dihaloalkane, such as dichloroethane, or a mixture of two or more dihaloalkanes. The mixture of dihaloalkanes may comprise one or more of dichloromethane, chlorobromomethane and dibromomethane. The temperature during the addition of TMPI may vary between about 0°C and 40°C. When the catalyst is selected to be AlCl 3 , the temperature during the addition of TMPI may vary between about 0°C and 5°C.
摘要:
Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized - sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
摘要:
Suspensions of PBBMA, characterized in that they comprise PBBMA in the form of finely ground particles and contain suspending agents chosen from among xanthene gums, anionic or nonionic purified, sodium modified montmorilonite, naphthalene sulfonic acid-formaldehyde condensate sodium salt, sodium or calcium or ammonium salts of sulfonated lignin, acrylic acids/acrylic acids ester copolymer neutralized - sodium polycarboxyl, and wetting agents chosen from among alkyl ether, alkylaryl ether, fatty acid diester and sorbitan monoester types, polyoxyethylene (POE) compounds.
摘要:
A novel flame-retardant material is prepared by copolymerizing pentabromobenzyl-acrylate with a metal salt of a compound of Formula I: wherein R₁ is H or lower alkyl, and R₂ is selected from H, lower alkyl and
OH. The novel flame retardant has improved thermal stability and is useful in a variety of uses, e.g. as a flame retardant in engineering plastics and styrenic.
wherein: x = 0.01 - 0.90 y = 0.05 - 0.50 z = 0.02 - 0.95; which is useful as a flame-retardant agent, is described. A process for the preparation of the novel terpolymer is also claimed.
摘要翻译:下式的三元共聚物:其中:x = 0.01-0.90y = 0.05-0.50 z = 0.02-0.95; 作为阻燃剂是有用的。 还要求保护新型三元共聚物的制备方法。
摘要:
Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is β-bromoethyl-tribromobenzene (β-BrBr₃), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective bromination of phenethyl bromide (β-Br), wherein the molar ratio of bromine to phenethyl bromide is comprised between 2.5 and 3.5, and preferably between 3.1 and 3.3 included; and by adding bromine, after an initial addition, at a controlled molar rate.