We developed two new types of organic-inorganic hybrid coatings using
sol-gel technology. They have excellent durability such as weather res
istance, soil resistance, heat resistance, scratch resistance etc. Man
y applications such as super weather resistant paint for exterior wall
s, heat resistant paint, binder for textiles or non-woven fabrics etc.
have been achieved. Organically modified polysiloxane was polymerized
by hydrolysis and condensation of alkoxyalkylsilane in the presence o
f colloidal silica or colloidal alumina. We successfully improved the
pot life of coatings based on organic synthesis. We also studied the s
tructure of polysiloxanes using NMR. The organic-inorganic hybrid poly
mer was prepared by using polyacrylate having alkoxysilyl groups, alko
xyalkylsilane and Al-compound as an effective catalyst. The structure
of the hybrid was assumed by using GPC analysis, DMTA analysis and SEM
. This hybrid could be formed as a thick (>100 mu m), uniform, transpa
rent and flexible film by coating. This him can be cured at wide range
of temperature (room temp approximate to 200 degrees C) using a speci
al catalyst. It has been applied as super weather resistant paint as w
ell as for other uses.