Curable composition and method for preparing the same
AssigneeMitsubishi Chemical Corporation
InventorsSeiichiro Tanaka, Hanako Kato, Takeshi Sawai, Nobuyuki Matsuzoe, Kenji Oba, Yukio Kajiwara, Hozumi Endo
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Abstract
A curable composition comprising an aged mixture of tetramethoxysilane with water added in excess of the theoretical amount sufficient for the hydrolysis and condensation of 100% of the silane and a reactive organic compound having at least two functional groups capable of condensing with the product of hydrolysis and condensation of the silane in the above mixture.
Claims18
A curable composition comprising:
- an aged mixture of tetramethoxysilane and water, said water being present in an amount in excess of the theoretical amount sufficient for the hydrolysis and condensation of 100% of the silane;
- and
- a reactive organic compound having at least two functional groups capable of condensing with the product of hydrolysis and condensation of the silane in the aged mixture.
A method for preparing a curable composition, comprising:
- adding water to tetramethoxysilane in an amount in excess of the theoretical amount sufficient for the hydrolysis and condensation of 100% of the silane;
- aging the resultant mixture;
- and
- blending a reactive organic compound having at least two functional groups capable of condensing with the product of hydrolysis and condensation of the silane in the aged mixture.
A curable composition obtained by blending a solution containing fine particles of hydrolysis-condensate of tetramethoxysilane having a radius of gyration of at most 10 .ANG. with a reactive organic compound having at least two functional groups capable of condensing with condensation-reactive functional groups contained in said fine particles.
A curable composition obtained by blending a solution containing fine particles of hydrolysis-condensate of tetramethoxysilane having a radius of gyration of at most 10 .ANG. with a reactive organic compound having at least two functional groups capable of condensing with condensation-reactive functional groups contained in said fine particles, and further allowing the resultant mixture to stand.
A transparent coating film having a thickness of at least 30 .mu.m, which contains SiO.sub.2 at a concentration of least 10 wt % and is not cracked by bending with a 10 mm.phi. bar at 180.degree..
A transparent coating film having a thickness of at least 30 .mu.m, which contains SiO.sub.2 at a concentration of at least 10 wt % and is not cracked by bending with a 6 mm.phi. bar at 180.degree..
A transparent coating film having a thickness of at least 30 .mu.m, which contains SiO.sub.2 at a concentration of at least 10 wt % and is not cracked by bending with a 3 mm.phi. bar at 180.degree..
Dependencies are inferred from the claim text.