Heat-resistant material and coating material for OA equipments having flexibility

A method for applying a heat resistant and flexible fluorine-containing material to an article for electronic type fixing and photosensitive parts of OA equipment;

• which comprises applying on said article a material comprising a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B;
• said elastomeric fluorine-containing polymer chain segment A imparts flexibility to the whole polymer and comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and said non-elastomeric fluorine-containing polymer chain segment B contained in said fluorine-containing multi-segment polymer is a polymer chain having a crystalline melting point of not less than 150° C.

A method for coating a heat resistant and flexible fluorine-containing material to an article for electronic type fixing and photosensitive parts of OA equipment;

• which comprises coating on said article a material comprising a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B;
• said elastomeric fluorine-containing polymer chain segment A imparts flexibility to the whole polymer and comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and said non-elastomeric fluorine-containing polymer chain segment B contained in said fluorine-containing multi-segment polymer is a polymer chain having a crystalline melting point of not less than 150° C.

A method for making a tube suitable for OA equipment by molding a heat resistant and flexible fluorine-containing material into a tube;

• said material comprises a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B;
• said elastomeric fluorine-containing polymer chain segment A imparts flexibility to the whole polymer and comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and said non-elastomeric fluorine-containing polymer chain segment B contained in said fluorine-containing multi-segment polymer is a polymer chain having a crystalline melting point of not less than 150° C.