Method for preparing a polysiloxane and titanate composition for high refractive index coatings
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United States of America Patent
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Oct 18, 1994
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N/A
app pub date -
Jul 19, 1993
filing date -
Oct 30, 1989
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Abstract
A method of preparation of a polysiloxane resin composition for an antiabrasion coating having a high refractive index involves hydrolysis of a first constituent of the organosiloxane type to an alkoxysilane hydrolyzate containing condensable silanol groups, and reaction of the hydrolyzate obtained with a second constituent formed of an organic compound of titanium having at least one titanium ester function of carboxylic acid, with addition of a quantity of water such as to cause hydrolysis of the hydrolyzable groups which remain in the mixture obtained and formation of a siloxane prepolymer which integrates the titanium.
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