Metal salts of hindered aromatic phenols
AssigneeGeneral Electric Company
InventorsWilliam Palmer Enlow, Gary Vincent Marlin
Life of this patent
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Abstract
Reaction of a phenol with a metal salt of an alcohol produces a metal phenolate salt of a phenol. When a hindered phenol is used a hindered metal phenolate is produced. Such hindered metal phenolate salts are useful in driving the synthesis reaction of hindered phenol esters and phosphite esters to completion.
Claims20
A process for the preparation of a metal phenolate comprising reacting a phenol having the formula:
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- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl with a metal alcoholate having the formula (R4O)xQ where R4O is derived from the corresponding alcohol R4OH, Q is a metal cation having a valence x, to produce a metal phenolate and an alcohol R4OH wherein said metal phenolate has the formula:
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- wherein Q, x and each R1, R2, and R3 are as previously defined and removing the alcohol R4OH from the metal phenolate.
A process for the preparation of a metal phenolate consisting essentially of reacting a phenol having the formula:
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- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl with a metal alcoholate having the formula (R4O)xQ where R4O is derived from the corresponding alcohol R4OH, Q is a metal cation having a valence x, to produce a metal phenolate and an alcohol R40H wherein said metal phenolate has the formula:
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- wherein Q, x and each R1, R2, and R3 are as previously defined and removing the alcohol R4OH from the metal phenolate.
A process for the preparation of a metal phenolate consisting of reacting a phenol having the formula:
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- wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl with a metal alcoholate having the formula (R4O)xQ where R4O is derived from the corresponding alcohol R4OH, Q is a metal cation having a valence x, to produce a metal phenolate and an alcohol R4OH wherein said metal phenolate has the formula:
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- wherein Q, x and each R1, R2, and R3 are as previously defined and removing the alcohol R4OH from the metal phenolate.
Dependencies are inferred from the claim text.