Rosin ester with low color and process for preparing same
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United States of America Patent
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Issued Date -
Aug 2, 2007
app pub date -
Feb 1, 2007
filing date -
Feb 2, 2006
priority date (Note) -
Abandoned
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Abstract
A process for producing light color rosins ester resin, preferably based on tall rosin, is described. The process is conducted in the presence of less than 10 weight % of an acid functional organic compound and avoids the need for use of a stoichiometric excess of rosin acid, or a stoichiometric excess of polyol hydroxyl groups. The process allows for the use of lower colored or darker tall oil rosin in the production of low color rosin esters.
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