ESTER-CONTAINING POLYOLS HAVING HALOGEN AND PHOSPHORUS ATOMS THEREIN

• US 3,639,542 A
• Filed: 05/13/1968
• Issued: 02/01/1972
• Est. Priority Date: 05/13/1968
• Status: Expired due to Term

• Current Assignee: BASF Corporation (BASF SE)
• Original Assignee: Louis C. Pizzini, William W. Levis Jr
• Inventors: Pizzini, Louis C., Levis, William W. Jr.
• Application Number:
  US04/728,840
• Time in Patent Office: 1,359 Days
• US Class Current: 558/105
• CPC Class Codes: C07F 9/08 Esters of oxyacids of phosphorus C07F9/062 takes precedence
• CPC Class Codes: C07F 9/091 with hydroxyalkyl compounds with further substituents on alkyl
• CPC Class Codes: C07F 9/5304 Acyclic saturated phosphine oxides or thioxides
• CPC Class Codes: C08G 18/4684 containing phosphorus
• CPC Class Codes: C08G 18/686 containing cycloaliphatic groups
• CPC Class Codes: C08G 63/68 Polyesters containing atoms other than carbon, hydrogen and oxygen C08G63/64 takes precedence

Abstract

ESTER-CONTAINING POLYOLS ARE PREPARED BY THE REACTION OF POLYHYDROYL-CONTAINING PHOSPHORS COMPOUNDS WITH HALOGEN-CONTAINING ORGANIC ACID ANHYDRIDES AND ALKYLENE OXIDES. THE POLYOLS ARE PARTICULARLY USEFUL IN THE PREPARATION OF FLAME-RETARDANT RIGID POLYURETHANE FOAMS.

Claims