DOPO-BASED HYBRID FLAME RETARDANTS

• Main Authors: HUFENUS, Rudolf, WÜST, Benno, BARBADORA, Pierluigi, FORTUNATO, Giuseppino, STELZIG, Timea, BOMMER, Lea, BUCZKO, Aleksandra, GAAN, Sabyasachi
• Format: Patent
• Language: English; French; German
• Published: 11.07.2018
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to novel and improved halogen-free flame retardant compounds having the structure of Formula I: wherein: R 1 and R 2 are independently hydrogen, C 1 -C 6 alkyl, -P(O)(OR 3 ) 2 , -P(O)OR 3 R 4 , or -P(O)R 3 2 , wherein R 3 and R 4 are independently C 1 -C 4 alkyl, C 6 -C 12 aryl, C 7 -C 15 aralkyl or C 7 -C 15 alkaryl; or R 1 and R 2 taken together form an unsaturated cyclic ring, which is optionally substituted by an alkyl group; each k is independently an integer from 1 to 2; each X is independently oxygen (O) or sulphur (S); v is 0 or 1; each Y is independently C 1 -C 4 alkylene, C 6 arylene, C 7 -C 15 aralkylene, C 7 -C 15 alkarylene, oxygen (O), nitrogen (NR), wherein R is H or C 1 -C 4 alkyl; n is 0, 1 or 2 with the proviso that n is 1 when Y is oxygen (O) or nitrogen (NR); each Z is independently C 1 -C 4 alkylene, C 6 arylene, C 7 -C 15 aralkylene or C 7 -C 15 alkarylene; m is independently 0, 1 or 2; with the proviso that when Y is oxygen (O) or nitrogen (N), m cannot be 0; each Q is independently C 1 -C 4 alkylene; t is an integer from 1 to 2; W is oxygen (O) or sulphur (S). The compounds are particularly suited as flame retardant additives for thermoplastic polyesters.