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Metallic ion coordinated PU can be formulated by an ion
exchange of carboxylic group containing PU with metallic salt.
Furthermore,organic/inorganic hybrids are obtained from UV-
radiation curing of UV-curable PU system with zinc salt of
acrylate containing borate ester (BZN) or acrylate containing
borate ester (BHA) in various ratios, respectively.BHA is
prepared from boric acid with 2-hydroxyethyl methacrylate(HEMA);
BZN is prepared from acrylate containing boric acid (BHA-2)with
zinc chloride. BHA-2 is obtained from boric acid with HEMA in1/2
ratio. The UV-curable PU system is synthesized from the
additionof HEMA into NCO-terminated PU prepolymer. The UV-PU
curing systemwith BZN or with BHA is irradiated with UV light
from a medium pressure mercury lamp light source. The resulted
UV-cured PU organic/inorganic hybrids are evaluated by TGA/FT-
IR,DMA, Cone Calorimeter.
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