Appeal No. 96-3862
Application No. 08/189,861
invention can be derived from a reading of representative
claim 1, which is reproduced below.
1. A process for the production of hydroxyfunctional
compounds suitable for use in the polyisocyanate polyaddition
process from polyurethane and/or polyurethane polyurea waste
comprising:
I. reacting a polyurethane and/or polyurethane polyurea
waste with a low molecular weight diol and/or polyol at a
temperature of from about 160 to about 260°C and
II. further reacting the amine-containing alcoholysis
product obtained in I. either
(a) with stirring at a temperature of from about 50
to about 180°C but below the temperature at which I.
was carried out
or
(b) with a dialkyl carbonate and/or 1,3-dicarbonyl
compound.
The sole prior art reference of record relied upon by the
examiner in rejecting the appealed claims is:
Braslaw et al. (Braslaw) 4,159,972 July
3, 1979
Claims 1-5 stand rejected under 35 U.S.C. § 102 as
anticipated by, or alternatively, under 35 U.S.C. § 103 as
being unpatentable over Braslaw.
3
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