Appeal No. 2005-0407
Application No. 09/888,246
bromine2 content within a specified range. Claim 1 is
illustrative:
1. A wet cake comprising water and a solid brominated
diphenylethane product, which product contains a predominate
amount of decabromodiphenylethane, the wet cake having an
occuluded free bromine content of from about 500 ppm to
about 2000 ppm.
THE REFERENCE
Mack et al. (Mack) 5,457,248 Oct. 10, 1995
(effective filing date on or before Apr. 7, 1994)
THE REJECTION
Claims 1, 2 and 4 stand rejected under 35 U.S.C. § 103 as
being unpatentable over Mack.
OPINION
We reverse the aforementioned rejection. We need to address
only claim 1, which is the sole independent claim.
Mack discloses that the color of a brominated diphenylalkane
product which can approach 100% decabromodiphenylalkane is
improved by including chelating or complexing agents in the water
used to isolate the product from the reaction mixture used to
2 The appellants disclose that “[t]he term ‘occluded free
bromine’ refers to that bromine which is tightly held by the
recovered decabromodiphenylethane product component of the wet
cake so that ordinary washing techniques are insufficient to
reduce its content in the product” (specification, page 13,
paragraph 0046).
2
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