Mitsui Petrochemical Industries, Ltd.

Tokyo Shibaura Denki Kabushiki Kaisha

Hitachi Metals, Ltd.

Katsumi Funakoshi

Hideyuki Itoi

Masumi Asanae

Koji Noguchi

Riichiro Nagano

Masataka Miyamura

Hiromi Yoshida

Teiichi Shiomi

Toshifumi Konishi

A positive image-forming material consisting of a methylpentene homopolymer or a methylpentene copolymer containing 50 mole percent or more of methylpentene units which has an intrinsic viscosity of not less than 0.2 dl/g as measured in decalin at 135.degree. C. and being soluble in not more than 100 times by weight of cyclohexene at 25.degree. C.

Positive image-forming method using 4-methyl-1-pentene polymer

A magnetic toner for pressure fixation containing at least a resin and a magnetic powder as the main components, where the resin is a polymer essentially, containing methyl-1-pentene as the main component and having a softening point of at least 80.degree. C. and a compression yield strength of not more than 150 kg/cm.sup.2, has a good fixability under a low pressure and a good preservability at a high temperature.

Magnetic toner for pressure fixation

An aqueous dispersion of improved stability, said dispersion consisting essentially of a mixture of

Aqueous dispersion of ethylene/.alpha.,.beta.-unsaturated carboxylic

In bonding molded articles of a 4-methyl-1-pentene polymer to each other or bonding a molded article of a 4-methyl-1-pentene polymer to a molded article comprised of a vinyl alcohol type polymer, metal or glass, if a solution of a modified 4-methyl-1-pentene polymer in cyclohexene and/or carbon tetrachloride is coated on at least one of the molded articles to be bonded, the adhesion strength can remarkably be improved.

Method of bonding 4-methyl-1-pentene polymers

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Iwakuni, Japan

Katsumi Funakoshi