Stabilized rosin ester and pressure-sensitive adhesive and hot-m

Details Stabilized rosin ester and pressure-sensitive adhesive and hot-m Stabilized rosin ester and pressure-sensitive adhesive and hot-m

1980-07-17

1981-11-24

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 27R, 260 27BB, 260 285A, 260 285AV, 260 285B, 260 285D, 260104, 260106, C09F 104, C08L 9106, C08L 9304

Patent

active

043023711

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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