Polyether Polyols From Glycerol Phosphate Salts As Initiator

Frontiers in polymer science

29 – 31 May 2011 LYON - FRANCE

POLYETHER POLYOLS FROM GLYCEROL PHOSPHATE SALTS AS INITIATOR
M.M. Velencoso1, M.J. Ramos1, J.C. García-Martínez2, A. de Lucas1 andJ.F. Rodriguez1
1Department

of Chemical Engineering. 2Department of Organic Chemistry of Pharmacy, University of Castilla-La Mancha, Spain.

INTRODUCTION
Polyurethanes (PUs) are an importantclass of polymers that have wide application in a great number of industrial sectors. One of the main concerns of PUs producers are the complement of flammability regulations. Phosphorous compounds havebeen widely used as flame retardant materials because of their efficiency in this area, lower production of corrosive and toxic gases in flames, and lower destruction to the earth’s environment. Theaim of this work was the synthesis of bifuncional polyols using glycerol phosphate calcium salt hydrate. If a phosphate salt is used as initiator, this reaction allows us to obtain polyols withphosphate groups in its structure not previously described. This gives the advantage of employed smaller amounts of flame retardant and permanent attachment of these in PUs, which implies a much smallerinfluence upon the physical and mechanical properties of the polymer.

CHARACTERIZATION GPC
The number and weight average molecular weight of the different polyols obtained ranged between 35005000g/mol and 5000-9500 g/mol, respectively. The polydispersity indexes were between 1.5 and 1.8.
Fig. 2. GPC chromatogram of polyether polyol with time for crude sample PCs (1:2).
630 min 785 min 1395 min9

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Elution Volumen (ml)

31P
31P

NMR

EXPERIMENTAL SET-UP
Polymerization Set-up
N2 Vacuum System OP T Stirring System P N2 Thermostat Bath ControlSystem

NMR spectra showed a signal of the phosphorus atom for the starting material glycerol phosphate calcium salt hydrate at 2.35 ppm. The signal of the phosphorus atom for a polyol synthesized...