Process for preparing stabilized rosin ester, and pressure-sensi

Details Process for preparing stabilized rosin ester, and pressure-sensi Process for preparing stabilized rosin ester, and pressure-sensi

1979-06-11

1981-02-03

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260106, 260 27BB, 260 27R, C09F 104

Patent

active

042487706

ABSTRACT:
A process for preparing a stabilized rosin ester having a higher softening point which comprises subjecting a rosin to disproportionation and purification, and esterifying the resulting purified disproportionated rosin with a tri- or more valent polyhydric alcohol to give a rosin ester having a softening point (according to ring and ball method) of 65.degree. to 140.degree. C. The resulting rosin ester has superior heat resistance and aging resistance as well as a high softening point and is suitably employed as a tackifier for pressure-sensitive adhesive compositions and hot-melt compositions.

REFERENCES:
patent: 2130997 (1938-09-01), Littmann
patent: 2154629 (1939-04-01), Littmann
patent: 2331803 (1943-10-01), Schlaanstine
patent: 2369125 (1945-02-01), Anderson
patent: 2407248 (1946-09-01), Borglin
patent: 2492145 (1949-12-01), Hampton
patent: 3632540 (1972-01-01), Unmuth et al.

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