Protective film and method for preparing same

Details Protective film and method for preparing same Protective film and method for preparing same

2007-01-23

2007-01-23

Tarazano, D. Lawrence (Department: 1773)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S246000, C156S244210, C526S082000, C526S083000, C526S352200

Reexamination Certificate

active

10458957

ABSTRACT:
A high-quality protective film for a dry film resist is provided. A film of a polyethylene is used as the protective film, the polyethylene being prepared by pressurizing ethylene with use of an ultra-high pressure compressor and then polymerizing the ethylene at a reaction temperature of 190° to 300° C. and a reaction pressure of not lower than 167 MPa in the presence of a radical polymerization initiator, or by pressuring ethylene with use of an ultra-high pressure compressor and then polymerizing the ethylene at a reaction temperature of 190° to 300° C. in the presence of a radical polymerization initiator while allowing a radical polymerization inhibitor to be present in the reaction system.

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Encyclopedia of Polymer Science and Engineering, 1986, John Wiley and Sons, vol. 6, pp. 383-400.

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