Method for preparing a polysiloxane and titanate composition for high refractive index coatings
US5357024A · kind A · utility
72Cited by
15References
26Claims
0Family size
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Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.