PURPOSE: The titled composition having improved adhesiveness and cohesive force without causing reduction in water resistance and problems of environmental hygiene, comprising a bulk material obtained by continuous bulk polymerization of an acrylic monomer a main component for adhesion.
CONSTITUTION: The titled composition comprising a bulk polymer having adhesivity at normal temperature as a main component for adhesive. The bulk polymer is obtained by polymerizing quickly a polymerization raw material having a viscosity of ≤10 poise at normal temperature, consisting essentially of an acrylic monomer, in the absence of a solvent which is used in a common solution polymerization, by a radical polymerization initiator in the former half zone of a transportation process, to increase the viscosity of a polymer, followed by polymerizing the polymer until it has a given conversion ratio. The polymerization is carried out in a reactor having a structure to transfer continuously successively fed contents with renewing the surface of the contents, wherein the whole zone of transportation process is controlled at a given temperature by heating.
MATSUOKA NAOKI
MATSUMOTO KEIJI
SAYANAGI SHIYUNICHIROU
NASU TAKESHI
| JPS5557046A | 1980-04-26 |