Gas separation: apparatus – Electric field separation apparatus – Plural diverse electric fields
Patent
1977-07-13
1979-05-15
Kimlin, Edward C.
Gas separation: apparatus
Electric field separation apparatus
Plural diverse electric fields
96 27E, 96 361, 96 49, 96 68, G03C 152, G03C 158, G03C 164
Patent
active
041546130
ABSTRACT:
This invention relates to an improvement in a material adapted for imagewise exposure to actinic light comprising a transparent or translucent support having a positive-acting quinone diazide light-sensitive coating composition in direct contact with one surface thereof, the improvement comprising that the surface of said coating in direct contact with said support is substantially photodecomposed, and that a gradient exists in said coating wherein the percentage of undecomposed light-sensitive quinone diazide increases with increasing distance from said support. The invention also relates to a method for preparing the novel material.
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American Hoechst Corporation
Bryan James E.
Kimlin Edward C.
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