Stock material or miscellaneous articles – Composite – Of epoxy ether
Reexamination Certificate
2006-05-02
2006-05-02
Mulcahy, Peter D. (Department: 1713)
Stock material or miscellaneous articles
Composite
Of epoxy ether
C428S447000
Reexamination Certificate
active
07037585
ABSTRACT:
A coating composition based upon at least partially hydrolyzed epoxy-functional alkoxy silanes and having particular utility in forming tintable, abrasion resistant coatings on lenses. Incorporation in the composition of a non-hydrolyzed epoxy-functional alkoxy silane provides a desired reduction in viscosity. Incorporation in the composition of a polyether surfactant provides a cured coating of the composition with increased tintability.
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Fredrikson & Byron , P.A.
Mulcahy Peter D.
The Walman Optical Company
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