Method of preparing rosin ester from polyol with phosphorous aci

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260 97, 260 975, C08F 104

Patent

active

046907831

ABSTRACT:
Phosphorous acid is used to catalyze the esterification of rosin with a polyol. The method is an improvement in that reaction time is shortened and the ester product exhibits improved color and oxygen stability.

REFERENCES:
patent: 2729660 (1958-01-01), Harrison
patent: 4172070 (1979-10-01), Scharrer et al.
patent: 4548746 (1985-10-01), Duncan et al.

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