Photoflash lamp with modified polycarbonate coating

Details Photoflash lamp with modified polycarbonate coating Photoflash lamp with modified polycarbonate coating

1974-11-01

1976-03-30

Dority, Jr., Carroll B.

Combustion

Projector and igniter for liquid or gelled fuel slug or rod,...

F21K 502

Patent

active

039472248

ABSTRACT:
A photoflash lamp having a protective coating over its glass envelope which is composed of an acidified polycarbonate resin for providing a strong containment vessel with improved aging charcteristics under conditions of stress and humidity. A preferred coating comprises a vacuum-formed sleeve composed of a polycarbonate resin with a phthalic anhydride additive.

REFERENCES:
patent: 3156107 (1964-11-01), Shaffer
patent: 3492268 (1970-01-01), Baker
patent: 3635895 (1972-01-01), Kramer
patent: 3770366 (1973-11-01), Audesse et al.

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