Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-09-20
2005-09-20
Robertson, Jeffrey B. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S507000, C524S539000, C525S131000, C525S440030
Reexamination Certificate
active
06946515
ABSTRACT:
A coating material consisting of at least three components, comprising a component (I) comprising at least one oligomeric or polymeric resin containing functional groups which react with isocyanate groups, as binder (A), a component (II) comprising at least one polyisocyanate as crosslinking agent (B), and a component (III) which comprises water, wherein component (I) and/or (III) comprise or comprises at least one low molecular weight and/or oligomeric, substantially unbranched, hydrophobic polyester (C) containing at least two hydroxyl groups in the molecule and having an OH number of from 56 to 500 mg KOH/g, an acid number <10 mg KOH/g and a number-average molecular weight Mn of from 450 to 2 000 daltons.
REFERENCES:
patent: 5753756 (1998-05-01), Aerts et al.
patent: 42 23 183 (1993-07-01), None
patent: 43 00 616 (1994-07-01), None
patent: 44 21 823 (1996-01-01), None
Lettmann Bernhard
Nienhaus Egbert
BASF Coating AG
Robertson Jeffrey B.
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