《判決文》
(和英)
原文：
そして前記アで説示したとおり、相互に非相溶の樹脂同士を溶融混練すれば、体積割合の多い 方の樹脂が構成する海(連続相)の中で、少ない方の樹脂相が島構造となる可能性が高いこと は、当業者であれば容易に予想することができること、もともと海相中に含まれる導電性物質 等の第3成分が島相に移行するためには、海相中を移動する島相が当該第3成分と接して、なお かつ海相－島相間の海面を拡散して島相中へ入り込む必要があり、拡散が通常は正逆方向に移 行可能な反応であること(移行の程度は異なっても、一旦島相に入り込んだ第3成分が再び海相 へ戻る可能性もある。)をも考え合わせると、当初は海相中にのみ含まれていた導電性物質等の 第3成分が、押出機等による比較的短い時間での溶融混練中に海相から島相へ一方的に大量に移 行し、過半を超えるような事態は当業者においておよそ想定しがたいものと認められるから、 「導電性物質の局在化が保たれる」との本件審決の認定に誤りはない。
英訳文：
Further, as explained in item A above, those skilled in the art can readily anticipate that, when two types of resins which are incompatible with each other are melt-kneaded, a resin having a smaller volume ratio is very likely to form an island structure in the sea portion (continuous phase) formed by another resin having a larger volume ratio. In addition, the migration of a third component (such as an electroconductive substance) which has originally been contained in a resin forming a sea phase into an island phase requires not only the contact between the island phase (moving through the sea phase) with the third component but also the diffusion of the third component at the sea phase-island phase interface into the island phase (further, it is possible that the third component which has once migrated into the island phase returns to the sea phase although the extent of the migration may vary). In view of the above, it is recognized that those skilled in the art would hardly expect a migration of a large amount of a third component (such as an electroconductive substance) which has originally been contained only in a resin forming a sea phase into an island phase during the melt-kneading performed by an extruder or the like only for a relatively short time, which results in the presence of more than half amount of the third component in the island phase. Therefore, the Board of Appeal has not erred in recognizing that “localized dispersion of the electroconductive substance is maintained”.
