Method for making oxidation-stable, light-colored glycerol ester

Details Method for making oxidation-stable, light-colored glycerol ester Method for making oxidation-stable, light-colored glycerol ester

1983-03-21

1984-05-08

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260104, 524764, C09F 100, C09F 104

Patent

active

044473540

ABSTRACT:
Glycerol esters of modified rosin are useful tackifiers in rubber adhesive compositions. Esters made with rosin modified by reducing the abietic acid concentration to 5% or less, will retain tackifying properties for longer periods in storage before use. The esters are prepared by simultaneously disproportionating and esterifying unmodified rosin with glycerol in the presence of p-t-amyl phenol and phosphoric acid, for example.

REFERENCES:
patent: 2340696 (1944-02-01), Rummelsburg
patent: 3423389 (1969-01-01), Wheelus
patent: 3743616 (1973-07-01), Kest
patent: 3872073 (1975-03-01), Thorpe et al.
patent: 4172070 (1979-10-01), Scharrer et al.
patent: 4248770 (1981-02-01), Matsuo et al.

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