Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-02-24
1976-12-07
Schofer, Joseph L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 47R, 260 47UA, C08G 6540, C08F 452
Patent
active
039961982
ABSTRACT:
Phenolic polymers having 3 to 1000 repeating units of the general structural formula ##STR1## wherein X and X.sup.1 independently are hydrogens or methyls, R is a lower alkyl of from 1 to 6 carbon atoms or an aryl, alkaryl or aralkyl of from 6 to 14 carbon atoms, and R.sup.1, R.sup.2 and R.sup.3 independently are hydrogen, lower alkyls of from 1 to 6 carbon atoms, aralkyls of from 8 to 14 carbons, or alkoxys or aralkyloxys of from 1 to about 14 carbons, are prepared in one step by contacting an R.sup.1, R.sup.2 and R.sup.3 -containing phenol having two hydrogens ortho to the hydroxyl group with a low purity diolefinic hydrocarbon under ortho-alkylation conditions in the presence of an effective amount of an ortho-alkylation catalyst. These materials find use as antioxidants, especially for edibles, where their polymeric nature offers advantages.
REFERENCES:
patent: 2224837 (1940-12-01), Rosenthal et al.
patent: 2665312 (1954-01-01), Ohlmann
patent: 3004953 (1961-10-01), Sonnabend
patent: 3420915 (1969-01-01), Braithwaite, Jr.
patent: 3546173 (1970-12-01), Hunt
patent: 3733365 (1973-05-01), Yeakey et al.
Dale James A.
Wang Patricia C.
Benz William H.
Dynapol
Kulkosky Peter F.
Schofer Joseph L.
LandOfFree
One step preparation of linear antioxidant phenolic polymers inv does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with One step preparation of linear antioxidant phenolic polymers inv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One step preparation of linear antioxidant phenolic polymers inv will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-378709