Seitetsu Kagaku Co., Ltd.

Sumitomo Metal Industries, Inc.

Koichi Fujiki

Morio Nakamura

Shigeji Obayashi

Kunioki Kato

Takushi Yamamoto

Tetsuzo Arai

Miyoshi Koyama

Yasuhiko Okamoto

Kohji Noji

An alkali metal acrylate polymer obtained by suspending an aqueous solution of acrylic acid and an alkali metal acrylate in an alicyclic or aliphatic hydrocarbon solvent containing a surfactant having an HLB value of 8-12 and subjecting the suspension to inverse suspension polymerization in the presence of a water-soluble radical polymerization initiator has a much higher water-absorbency and particularly salt solution-absorbency than known ones. If said polymer is crosslinked with a crosslinking agent, its stability in the fluid-absorbed state for a long period of time is improved and the absorption rate when absorbing water is also improved.

Alkali metal acrylate or ammonium acrylate polymer excellent in salt

A coating composite containing sulfochlorinated polyolefin having a sulfur content ranging from 0.2 to 2.5% by weight and a chlorine content ranging from 18 to 37% by weight is applied directly as an adhesive layer or is applied on one surface of a thermoplastic resin base to be contacted with a metal surface, which resin base is coated on the metal surface. When the coating composite is pressed thereafter under a pressure, a coating on the metal surface with excellent adhesion, water and impact resistances is provided.

Process for adhering polyethylene to steel substrates

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Kakogawa, Japan

Koichi Fujiki