Appeal No. 2001-0452
Application 08/073,969
or aryl group and R is hydrogen, halogen or an akyl radical,
and a stabilizing amount of a compound of the formula:
wherein:
R,R1 and R2 each independently represents hydrogen, a straight-chained or
branched or cyclic alkyl radical, aralkyl or aryl;
A is oxygen or nitrogen;
C6H2 is a phenyl ring which may be substituted;
Z represents Arx,R1,R2, alkoxy methylene or alkylidene;
provided that when A is oxygen, x is 0 or 1 and when A is nitrogen, x is 1 or 2; and y
is 1 or 2;
wherein the total content of 3-isothiazolinones is below 8 wt/% and which contains
no more than 10 wt.% isothiazolinone decomposition products and wherein the
composition has a stability period of at least 100 days. [Emphasis added.]
The prior art references relied on by the examiner are:
Segall et al. (Segall) 4,920,137 Apr. 24, 1990
Hart et al. (Hart), Organic Chemistry A Short Course, 6th ed., Houghton Mifflin Co., Boston,
Mass., pp. 227 & 282-283, 1995
Claims 27 through 31 and 38 through 67 stand rejected under 35 U.S.C. § 103(a)
as unpatentable over Segall alone or the combined disclosures of Segall and Hart
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