Method of rendering surfaces nonfogging

Details Method of rendering surfaces nonfogging Method of rendering surfaces nonfogging

1975-05-15

1977-04-19

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

427163, 427165, B05D 306

Patent

active

040189392

ABSTRACT:
A method for improving adhesion of nonfogging film coatings comprising a block copolymer containing alternating blocks of polyurethane and a hydrophilic polyacrylic, to a polymeric substrate by subjecting the substrate to a controlled exposure to UV irradiation. Exposure may be prior to or following casting the nonfogging coating in place on the substrate. By varying the weight ratio of polyurethane/polyacrylic it is possible to vary the flexibility of the coating and hence to widen the range of substrates to which the coating may be applied, e.g., from flexible wrapping material to rigid mirrors.

REFERENCES:
patent: 3257476 (1966-06-01), Tobolsky
patent: 3291859 (1966-12-01), Tobolsky
patent: 3635756 (1972-01-01), Shepherd et al.
patent: 3705808 (1972-12-01), Kasugai et al.
patent: 3745042 (1973-07-01), Lim et al.
patent: 3935367 (1976-01-01), Merrill et al.

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