Appeal 2007-2549
Application 10/163,206
[20] Suitable solid acid constituents are said to include zeolites
(Broekhoven 5:10-16).
[21] According to Broekhoven, the saturated hydrocarbon in the
regeneration process could be any linear, branched, and/or cyclic
saturated hydrocarbon(s) which are liquid or in the supercritical
condition at regeneration temperature and pressure (Broekhoven 9:23-
26)
[22] Broekhoven describes using the alkylatable compound as the saturated
hydrocarbon for regeneration to avoid adding an extra constituent to
the system and because the effluent from the regeneration step can be
added to the alkylation system (Broekhoven 9:26-30).
[23] Generally, the regeneration step is said to be carried out at -40 to
250oC and at a pressure of 1 to 100 bar (Broekhoven 10:1-2).
[24] According to the Examiner, "[i]t appears that Broekhoven does not
disclose that the saturated hydrocarbon is an alkylated product,
namely a C8 saturated alkane (see entire patent for details)" (Answer
3, ¶ 1).
C. Yigong
[25] Yigong discloses "a process for alkylation of an isoparaffin with an
olefin, especially alkylation of isobutane with butene over the solid
acid catalysts" (Yigong 2:5-6 and 3:47-48).
[26] Generally, Yigong discloses a process comprising (i) reacting a
feedstock comprising alkylatable isoparaffin and a C3 ~ C6 mono-
olefin alkylation agent in the presence of a solid acid catalyst to form
an alkylate, and (ii) regenerating the catalyst with a solvent (Yigong
3:15-28).
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