Appeal No. 1997-3643
Application No. 08/484,047
inks are normally selected from conventional resins including rosin-modified phenolic resins.
(Savageau, col. 1, lines 55-63). Savageau exemplifies an alkyd resin which is formed from linseed oil,
glycerine and isophthalic acid. (Savageau, example 1 and col. 4, lines 51-54).
Savageau does not explicitly state the iodine value of its unsaturated fatty acid or the acid
number or hydroxyl number for its alkyd resin. The examiner states for the record, however, that the
example of Savageau has a hydroxyl number:
... way to low based on a ratio of hydroxyl compound to acid compound. There is no
motivation directly in it or in [the] Ink Manual incorporated therein to raise the hydroxyl
number. (Examiner’s answer, p. 5).
Uhlemayr, U.S. Patent No. 4,383,860
Uhlemayr discloses a paper printing ink composed of a pigment and an alkyd resin binder
modified with a long-chain fatty acid. The alkyd resin is a non-drying resin modified with oils, fatty
acids or fatty alcohols having an iodine number of less than 20. (Uhlemayr, abstract). Indeed,
Uhlemayr specifically states that “the modifier should, in general, be largely free of multiple double
bonds.” (Uhlemayr, col. 3, lines 4-5). Uhlemayr describes the alkyd resin as having a hydroxyl
number of greater than 10 and preferably greater than 15. In particular, alkyd resins having a hydroxyl
number in the range of from about 20 to about 35 have proven especially valuable. Similarly, alkyd
resins having an acid number of smaller than about 25 and especially one of about 6 to about 12 are
particularly valuable. (Uhlemayr, col. 3, lines 16-25).
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