21-04-2016 дата публикации
Номер: US20160108010A1
Принадлежит:
Disclosed are antioxidative natural compounds, their salts, chelates and cleavage derivatives that exhibit a superior combination of properties. The compounds can be used for a variety of purposes, including the stabilization of polymers. The compounds can be prepared by substantially cleaving a humic acid of formula I followed by esterification to provide at least one antioxidant compounds of formula V, formula VI, formula VII, formula VIII, salts thereof, or chelates thereof. 2. The compound of claim 1 , comprising at least one compound of formula VI claim 1 , formula VII claim 1 , formula VIII claim 1 , a salt thereof claim 1 , chelate thereof claim 1 , or combination thereof claim 1 ,wherein{'sub': 2', '1', '20, 'Ris hydrogen or —(C-C)alkyl;'}{'sub': 23', '24', '25', '26', '27', '3', '19, 'claim-text': [{'sub': 4', '1', '20, 'Ris hydrogen or —(C-C)alkyl;'}, {'sub': 41', '4', '20, 'Ris independently hydrogen or —(C-C)alkyl; and'}, {'sub': 42', '43', '44', '3', '19, 'R, R, and Rare independently hydrogen or —(C═O)—(C-C)alkyl,'}], 'R, R, R, R, and R, are independently hydrogen or —(C═O)—(C-C)alkyl;'}{'sub': 21', '22', '23', '24', '25', '26', '27', '41', '42', '43', '44, 'wherein at least one of R, R, R, R, R, R, RR, R, Rand Ris not hydrogen.'}3. The compound of claim 1 , wherein the compound is formula V claim 1 , a salt thereof claim 1 , or chelate thereof.4. The compound of wherein{'sub': 11', '111', '112', '111', '112', '1', '20', '1', '20', '3', '19', '3', '19, 'Ris —N(R)(R), wherein Ris C-acetamido or substituted C-acetamido; Ris hydrogen, —(C-C)alkyl, substituted —(C-C)alkyl, —(C═O)—(C-C)alkyl, or substituted —(C═O)—(C-C)alkyl;'}{'sub': 12', '141', '142', '143', '144', '4', '20', '4', '20, 'R, R, R, R, and Rare independently hydrogen, —(C-C)alkyl, or substituted —(C-C)alkyl;'}{'sub': 13', '1', '20', '1', '20', '3', '19', '3', '19, 'Ris hydrogen, —(C-C)alkyl, substituted —(C-C)alkyl, —(C═O)—(C-C)alkyl, or substituted —(C═O)—(C-C)alkyl;'}{'sub': 151', '152', ' ...
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