Appeal No. 94-3371
Application 07/986,878
substituted carboxylic acid or derivative thereof with
an amine having present within its structure at least
one >NH group, or a basic inorganic material, (2) an
amine dispersant prepared by reacting an aliphatic or
alicyclic halide with an amine, (3) a Mannich
dispersant, and (4) a product obtained by post-treating
(1), (2), or (3) with a member selected from the group
consisting of urea, thiourea, carbon disulfide, an
aldehyde, a ketone, a carboxylic acid, a hydrocarbon-
substituted anhydride, a nitrile, an epoxide, a boron
compound, and a phosphorus compound, provided that the
dispersant is not an ester obtained by reacting at
least one substituted succinic acylating agent with at
least one alcohol of the general formula
R (OH) (1)
3 m
wherein R is a monovalent or
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polyvalent organic group
joined to the OH groups through
carbon bonds, and m is an
integer of from 1 to about 10, and
(B) heating the mixture to an elevated
temperature whereby isocyanate monomer is distilled and
recovered, leaving a liquid residue.
The Prior Art and Rejections
The examiner relies upon the following prior art references
to support the rejections of the claims:
Nadler 2,810,681 Oct. 22, 1957
DiBiase et al. (DiBiase) 5,043,470 Aug. 27, 1991
The appealed claims stand rejected as follows:
1. Claims 2-7, 9-17 and 73 stand rejected under 35 U.S.C.
§ 103 as obvious over Nadler.
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