Method for producing polyisobutylphenols

Details Method for producing polyisobutylphenols Method for producing polyisobutylphenols

2005-07-05

2005-07-05

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S790000, C568S793000, C568S794000

Reexamination Certificate

active

06914163

ABSTRACT:
Polyisobutenylphenols are prepared by alkylating an aromatic hydroxy compound with substantially monoethylenically unsaturated and substantially homopolymeric polyisobutenes in the presence of a Lewis acid alkylation catalyst by a process in which the polyisobutenes have a β double bond content of at least 35 mol %.

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Polym.Bul.8,563-570(1982) Guhaniyogi et al.
J.Polym.Sci,A, vol. 31, 1923-1939(1993) Jamois et al.
Maenz, Angew. Makromol. Chem, vol. 242, pp 183-197 (1996).

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