C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
400/9387, 260/46
C07F 9/12 (2006.01) C08K 5/52 (2006.01) C08K 5/521 (2006.01)
Patent
CA 1161456
Abstract: Mixed phosphoric acid ester compositions are prepared by reacting at a low temperature in an an- hydrous system, and in the presence of a catalytic amount of sodium, an ester of phosphoric acid having the formula: Image wherein R1 may be the same or a different aromatic radical selected from the group consisting of phenyl and substituted phenyl radicals; with an aliphatic alcohol having the formula: R2CH2CH2OH wherein R2 is the same or a different aliphatic radi- cal selected from the group consisting of alkyl and alkoxy radicals. A transesterification mixture is obtained that contains a substantial amount of each of the compounds: R1O-?-(OCH2CH2R2)2 and (R1O)2-?-OCH2CH2R2 wherein R1 and R2 are the radicals defined above. The mixed phosphate acid ester composition may be separated from alcohols present in the transesterifi- cation mixture by distillation, and are useful plasti- cizers for polyvinyl chloride polymers.
359173
Beacham Harry H.
Gunkel Louis T.
Hamilton James P.
Fmc Corporation
Osler Hoskin & Harcourt Llp
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