Patent ID: 6967059

Claim:
An element having a surface at least a part of which is provided with a polymer compound, wherein said polymer compound is a material that is: (a) either soluble in a solvent or has a main skeletal structure different from a material composing at least a portion of said part of said surface; (b) comprised of a first part having a functional group and a second part having an interfacial energy different from that of said functional group and approximately equal to a surface energy of said part of said surface; (c) obtained by: (i) finely fractionalizing a polymer by a catalyst for polymer cleavage to obtain fractionalized products comprising a constituent monomer of the polymer and/or a shorter chain of the polymer; (ii) orienting the fractionalized products such that said second part is oriented toward said part of said surface and said first part is oriented in a direction different from that in which said second part is oriented; and (iii) bonding the oriented fractionalized products to each other; and (d) provided on the surface after said fractionalizing, orienting and bonding, wherein said part of said surface of said element is composed of an olefinic resin and said polymer compound is a polyalkylsiloxane having a hydrophilic group.