Appeal No. 95-4089
Application 08/090,073
atoms], although useful as reducing agents too, may be
too strong for delicate hard surface cleanings.
Preferred such dibasic acids are those of the middle
portion of the 2 to 10 carbon atom acid range, succinic
[4 carbon atoms], glutaric [5 carbon atoms], adipic [6
carbon atoms] and pimelic acids [7 carbon atoms],
especially the first three thereof, which fortunately are
available commercially in mixture.
14. The saturated dicarboxylic acids mentioned in
Finding 13 have the general formula:
HOOC)(CH ) )COOH,
2 n
where n varies from 0 (oxalic acid) to 8 (sebacic acid).
Hence, the formula for glutaric acid [5 carbon atoms] is:
HOOC)(CH ) )COOH.
2 3
See Wertheim, Organic Chemistry, page 249 (2d ed. 1948).
Heit
15. Heit describes composition which contains maleic
acid which are said to be useful for removing scale from the
jacket side of a glass-lined jacketed equipment (col. 1,
lines 13-14). "Scale" includes "mineral and organic solids"
deposited on glass surfaces from contact with water (col. 1,
lines 21-23).
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