Process for preparing colorless rosins
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United States of America Patent
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Feb 25, 1997
Grant Date -
N/A
app pub date -
Jan 18, 1995
filing date -
May 18, 1993
priority date (Note) -
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Abstract
A process for preparing colorless rosins characterized by dehydrogenating purified hydrogenated rosins in the presence of a dehydrogenating catalyst. The colorless rosins obtained according to the process of the present invention are nearly colorless in appearance, odorless and excellent in stabilities, particularly are excellent in various properties such as odor, stabilities and compatibility in a heated state. Accordingly the above-mentioned colorless rosins are suitably used not only as modifiers for soap-type cleaning compositions, but also as emulsifiers for synthetic rubbers and emulsion polymerization in the form of alkali metal salts thereof. The esterified colorless rosins are suitably used as tackifiers for hotmelt-type adhesives, modifiers for rubbers and various plastics, starting materials for traffic paints, base materials for chewing gums, modifiers for inks and paints, coating agents for pigments, fluxes for solders, and the like, and thus the commercial values of final products for those uses can be increased.
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