Perfluoroalkyl substituted hydroxyphenylalkonoic ester...

Details Perfluoroalkyl substituted hydroxyphenylalkonoic ester... Perfluoroalkyl substituted hydroxyphenylalkonoic ester...

C - Chemistry, Metallurgy

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C

C07C 323/12 (2006.01) C07C 69/88 (2006.01) C07C 219/10 (2006.01) C07C 311/09 (2006.01) C07C 317/18 (2006.01) C07C 323/67 (2006.01) C08K 5/136 (2006.01) C08K 5/375 (2006.01) C09K 15/14 (2006.01) C11B 5/00 (2006.01)

Patent

CA 2097578

A-19121/A/CGC 1620 PERFLUOROALKYL SUBSTITUTED HYDROXYPHENYLALKANOIC ESTER ANTIOXIDANTS Abstract Perfluoroalkyl substituted alcohols can be reacted with substituted hydroxyphenylalkcanoic esters to form perfluoroalkyl containing hydroxyphenylalkanoic ester antioxidants of the formula I, II or III (I) Image (II) Image (III) Image wherein R1 and R2 are independently e.g. alkyl of 1 to 4 carbon atoms, R3 i8 e.g. hydrogen, A is e.g. ethylene, m is e.g. 2 or 3, n is 1 or 0, R1 is e.g. perfluoroalkyl of 6 to 12 carbon atoms, E is e g. allcylene of 2 to 6 carbon atoms and X is e.g. -S-. These perfluoroalkyl substituted hindered hydroxyphenyl allcanoates are stabilizers which confer superior processing stability to polymers processed at elevated temperatures such as polypropylene, as well as protecting said polymers from thermal and oxidativedegradation.

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