Abrasion and antifog-resistant optical element

Details Abrasion and antifog-resistant optical element Abrasion and antifog-resistant optical element

1977-09-21

1978-11-28

Hoffman, James R.

Coating processes

Optical element produced

Transparent base

427165, B05D 310, B05D 302

Patent

active

041276825

ABSTRACT:
An optical element is provided having a durable abrasion-resistant, antifog coating applied to at least one surface thereof by coating an optical element comprised of an inorganic or organic transparent base with a transparent abrasion-resistant antifog coating consisting of a lightly cross-linked polyvinyl alcohol, the desired degree of cross-linking being obtained by utilizing a combination of zirconium nitrate and formaldehyde as cross-linking agents.

REFERENCES:
patent: 2310223 (1943-02-01), Eaton et al.
patent: 2455936 (1948-12-01), Lowe
patent: 3700487 (1972-10-01), Crandon et al.
patent: 3840482 (1974-10-01), Bolto et al.

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