Syntheses and physical properties of two-component polyurethane flame-retardant coatings using chlorine-containing modified polyesters

Synthesis and characterization of chlorine‐containing flame‐retardant polyurethane nanocomposites via in situ polymerization

“…In samples that have higher chain extender, amounts of capable sites for formation of hydrogen bonds in unit volume of polymer matrix are more and thus F m increases. In other point of view, existence of chlorine atoms in polymer structure caused increasing of adhesion, which reported in other studies 4, 16, 38…”

“…Chlorine compounds usually have low flammability in the gaseous state. The presence of chlorine affects chemical reactions during combustion; chlorine compound generates chlorine‐containing heavy gases, which suppress the access of oxygen and consequently suppress the flammable combustion of PUs 4. Results of LOI and ignitibility tests are shown in Table III.…”

Preparation of Flame-Retardant Polyurethane and Its Applications in the Leather Industry

“…In addition, Park et al synthesized polyester diols with chlorine and bromine side chains, respectively. The results demonstrated that the prepared flame-retardant PU failed to ignite in vertical combustion tests and passed the UL-94 V-0 test [ 50 , 51 ]. Although halogenated flame retardants can provide PU with high flame-retardant efficiency and are inexpensive, halogenated flame retardants emit large amounts of smoke when burned and produce corrosive and toxic gases such as hydrogen halides, dioxins, and furans.…”

Thermal decomposition, combustion and fire‐retardancy of polyurethanes—a review of the recent literature

“…Chlorine‐containing81 and bromine‐containing82 polyols were synthesized by polycondensation of dichloroacetic or 2,3‐dibromopropanoic acid, respectively, with trimethylolpropane and then with 1,4‐butanediol and adipic acid (Schemes and ).…”