Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1981-01-30
1983-03-22
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
568 15, 523506, C08K 553, C07F 953
Patent
active
043776531
ABSTRACT:
Mixed ether compositions containing oligomers of polyhydroxyalkyl phosphine oxide are prepared by heating a polyhydroxyalkyl phosphine oxide in the presence of an acid catalyst at temperatures within the range of from about 139.degree. C. to about 200.degree. C. and removing water from the reaction mixture. When the reaction is conducted in the presence of an aliphatic, cycloaliphatic or aromatic alcohol having one or more hydroxyl groups mixed phosphine oxide ethers of the added alcohol are formed. The mixed ether compositions of the present invention are useful fire retardant additives.
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FMC Corporation
Hoke Veronica P.
Ianno Frank
Kell Robert W.
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