Appeal No. 1999-1878 Page 2
Application No. 08/799,411
BACKGROUND
Appellants’ invention relates to a polyacetal resin
composition and a method of making such a composition. An
understanding of the invention can be derived from a reading
of exemplary claim 1, which is reproduced below.
1. A polyacetal resin composition which
comprises about 100 parts by weight of a polyacetal
having a residual fluorine concentration of not more
than about 13 ppm and a concentration of
formaldehyde generated when the polyacetal is heated
at about 230 EC for about 30 minutes in nitrogen of
not more than about 500 ppm; from about 0.01 to
about 3 parts by weight of an antioxidant; and from
about 0.001 to about 5 parts by weight of a basic
substance, wherein the polyacetal is a polymer
obtained by polymerizing trioxane or a mixture of
trioxane with a comonomer in the presence of at
least one polymerization catalyst selected from the
group consisting of boron trifluoride, boron
trifluoride hydrate and a coordination complex
compound of an organic compound containing an oxygen
atom and a sulfur atom with boron trifluoride.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
MacDonald 2,768,994 Oct.
30, 1956
Walling et al. (Walling) 3,027,352 Mar.
27, 1962
filed” (brief, page 2) is obviously in error since appellants’
do not refer to that subsequently filed amendment after final
(Paper No. 11) in their brief.
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