Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-09-27
2010-11-02
Egwim, Kelechi C (Department: 1796)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C525S050000, C525S256000, C525S387000, C549S266000
Reexamination Certificate
active
07825059
ABSTRACT:
Process to prepare a trioxepane compound of the following formula (I) comprising less than 3.5 wt % of dialkyl peroxide based on the total amount of peroxides, said process comprising the steps of reacting a glycol compound of the formula R3CHOH—CH2—C(CH3)2OH with hydrogen peroxide in the presence of an acid to form a glycol hydroperoxide, purifying the glycol hydroperoxide, reacting the purified glycol hydroperoxide with a ketone or aldehyde of the formula R1R2CO in the presence of an acid to form the trioxepane compound, and purifying the trioxepane compound, wherein R1, R2, and R3are independently selected from hydrogen and a substituted or unsubstituted hydrocarbyl group, with the proviso that if R1and R2are both methyl groups, R3is not hydrogen. Initiator compositions comprising the so-prepared trioxepane compound are characterized by a high safe processing temperature in combination with a good crosslink efficiency.
REFERENCES:
patent: WO 98/50354 (1998-11-01), None
patent: WO 9850354 (1998-11-01), None
Adam et al. [“1,2,4-Trioxepanes: Synthesis and Mass Spectral Behaviour,'” Journal of the Chemical Society, Chemical Communications, (13), 798-9, (1972)].
Kirk-Othmer [The Encyclopedia of Chemical Technology, 3rd Edition, vol. 17, p. 57, (1982)].
Waldemar, Adam, et al., “1,2,4-Trioxepanes: Synthesis and Mass Spectral Behaviour,”Journal of the Chemical Society, Chemical Communications, (13), 798-9, (1972).
Kirk-Othmer, The Encyclopedia of Chemical Technology, 3rdEdition, vol. 17, p. 57, (1982).
Meijer John
Nijhof Leonardus Bernardus Gerhardus Maria
Roelofs Herman Evert
Tonnaer Haimo
Van De Worp Roelof
Akzo Nobel N.V.
Egwim Kelechi C
Kenyon & Kenyon LLP
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