Solid ester products of sterically hindered polyhydroxymonocarboxylic acids
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United States of America Patent
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Mar 27, 1990
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N/A
app pub date -
Jan 29, 1988
filing date -
Jan 29, 1988
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Abstract
An ester of a sterically hindered polyhydroxymonocarboxylic acid and a polyhydroxy-containing component, which ester is a solid at ambient temperature conditions, comprising the condensation product of said acid selected from the group consisting of dimethylolpropionic acid, trimethylolacetic acid, and mixtures thereof, and said polyhydroxy-containing component selected from the group consisting of pentaerythritol, trimethylolethane, and mixtures thereof, said product having a mol ratio of acid to polyhydroxy-containing component of at least about 1.75, a ring and ball softening point of at least about 50.degree. C., and an acid number of less than about 40. An ester of a sterically hindered polyhydroxymonocarboxylic acid and a polyhydroxy-containing component, which ester is a solid at ambient temperature conditions, comprising the condensation product of said acid selected from the group consisting of dimethylolpropionic acid, trimethylolacetic acid, and mixtures thereof, and pentaerythritol, said product having a mol ratio of acid to pentaerythritol of at least about 0.75, a ring and ball softening point of at least about 50.degree. C., and an acid number less than about 40. An ester of trimethylolacetic acid and trimethylolpropane, which ester is a solid at ambient temperature conditions, comprising the condensation product of said acid and said trimethylolpentane, said product having a mol ratio of acid to trimethylolpentane of at least about 1.75, a ring and ball softening point of at least about 50.degree. C., and an acid number of less than about 40.
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