| 摘要 |
PURPOSE:To resist a polar solvent and at the same time provide flexibility and abrasion-resistance by forming a squeegee for screen printing with an etylene-propyrene copolymer as a base. CONSTITUTION:The subject item is composed mainly of polar solvent-resistant ethylene-propyrene copolymers. Ethylene-propyrene copolymers used may be binary copolymers of ethylene and propyrene or ternary copolymers of two kinds of monomers such as ethylene and propyrene and other monomers. Any of these copolymers have an ethylene/propyrene ratio(weight) of normally 70/30-40/60. Other monomers used are diene monomers of norbornene compounds or dicyclo compounds such as dicyclopentadiene. Polar solvents eligible are dimethylholmamide, etc. Printing pastes are such as printing conductive pastes obtained by dissolving resin binders into these polar solvents wherein high conductive powder is scattered or printing resistance pastes by dispersing inorganic fillers.
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