C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/461.5
C07F 9/141 (2006.01) C07F 9/09 (2006.01) C08G 79/04 (2006.01) C08J 9/00 (2006.01)
Patent
CA 1127176
METHOD OF PREPARING FLAME RETARDANT OLIGOMERIC PHOSPHATE ESTERS ABSTRACT OF THE DISCLOSURE Flame retardant oligomeric phosphate ester compositions having the structural formula: Image are prepared, wherein R is C1-C10 alkyl or haloalkyl, R1 and R2 can be the same or different and are hydrogen, C1-C10 alkyl or haloalkyl and n is an integer from about 2 to about 10. The method of preparing the compositions com- prises reacting P2O5 with a trialkyl or tris(haloalkyl) phosphate in the presence of about 0.01% to about 5% of a phosphite at a temperature from about 0°-200°C. A polyphosphate ester having P-O-P bonds is formed which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant composi- tions. Alternatively, a method of preparing similar compositions comprises reacting P2O5 with a trialkyl or tris(haloalkyl)phosphite at a temperature from about 0°C. to about 200°C. A mixed polyphosphate- polyphosphite ester having P-O-P bonds is formed C-5128/5227 which is then oxidized to yield a polyphosphate having P-O-P bonds; which is the reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions. C-512B/5227
322892
Hardy Thomas A.
Jaffe Fred
Gowling Lafleur Henderson Llp
Stauffer Chemical Company
LandOfFree
Method of preparing flame retardant oligomeric phosphate esters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing flame retardant oligomeric phosphate esters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing flame retardant oligomeric phosphate esters will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-118695