group content of 30 to 60% by weight, based on the
weight of the linear alliphatic diisocyanate, with a
hydroxyl component having a hydrocarbon chain of
2 to 23 carbon atoms and an average functionality of
less than 1.5 at an NCO/OH equivalent ratio of
1.0:1.0 to 0.5:1.0,
iv) a hydrocarbon chain content of 10 to 65% by
weight, based on the weight of the polyisocyanate
component, wherein the hydrocarbon chains are
attached to allophanate groups via oxygen and have
an average of 2 to 23 carbon atoms and
v) a distillable diisocyanate content of less than 0.5%
by weight, based on the weight of the polyisocyanate
component, and
b) an isocyanate-reactive component; and
(2) curing the composition.
17. The blister-free coating made by the method of Claim 10.
The References
The prior art references of record relied upon by the examiner in rejecting the appealed claims
are:
Windemuth et al., (Windemuth) 3,769,318 Oct. 30, 1973
Hicks et al. (Hicks) 5,466,771 Nov. 14, 1995
Windemuth is available as prior art under 35 U.S.C. § 102(b) and Hicks is available as prior
art under 35 U.S.C. § 102(a).
The Windemuth Reference
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