Toyo Tire & Rubber Co., Ltd.

Ricoh Company, Ltd.

Dai Nippon Toryo Co., Ltd.

Thomas & Betts Corporation

Yoshio Yamada

Kozo Otani

Mitsuaki Hashiyama

Kazuaki Bito

Toru Ozaki

Atsushi Inoue

Takeshi Yamaji

Hidehito Sogi

Toshinori Morizane

Junichi Takagishi

Hidenori Matsuno

Masaki Ohshiba

Takeshi Oyama

Kenji Kaneko

Hiroyuki Okumura

An aqueous inorganic zinc-rich coating composition employs zinc powder and a vehicle containing an aqueous solution containing a specific alkali silicate, an ammonium ion, and a halide ion at specific concentrations; a vehicle containing an aqueous solution containing the above ingredients at specific concentrations and additionally an alkali halide at a specific concentration; or a vehicle containing an aqueous solution containing a specific alkali silicate and an alkali halide at specific concentrations, wherein the vehicle and zinc powder are contained at a specific ratio.

Aqueous inorganic zinc-rich coating composition

Air bag device with breakable retainer strap

In a cleaning device for an electrophotographic copying machine having a cleaning member unified in structure by bonding a blade member and a holding member together by an adhesive, the improvement characterized in that a heat-sensitive adhesive having a contact angle with water at 23.degree. C. of 90.degree. to 100.degree. is used as the adhesive.

Cleaning device for electrophotographic copying machines

The present invention provides a cleaning blade for use in electrophotographic copying machines, facsimile machines, printers or the like which is characterized in that it has a double-layer structure and comprises a contact member made of a poly(urethane)ureamide polymer and to be held in contact with a toner image bearing member, and a support member for the contact member having the same hardness or substantially the same hardness as the contact member and lower than the contact member in glass transition temperature.

Cleaning blade for electrophotographic copying machines or the like

A polymer comprising a poly(urethane)ureamide is prepared by a reaction of a polyisocyanate and a polyesterpolyol derivative of the formula [I] ##STR1## wherein A is an n-valaent radical obtained by removal of terminal hydrogen atoms from an n-valaent polyester-polyol having a molecular weight of 400 to 10,000 and containing ##STR2## group in the main chain, n is an integer of 2.ltoreq.n.ltoreq.4,

Polyesterpolyol derivative and a poly(urethane)ureamide obtained

A poly(urethane)ureamide which comprises a polymer obtained by a reaction of (a) a polyether derivative of the general formula [I] and (b) a polyisocyanate exhibits an excellent wear resistance and heat resistance due to the presence of the aromatic amido groups ##STR1## wherein A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000,

Polyether derivative and a poly(urethane)ureamide obtained therefrom

A polyetherpolyol derivative having at least, on average, one terminal amino group in which at least, on average, one hydroxyl group is substituted by a residue of para-aminobenzoic acid ester, and having the general formula ##STR1## wherein n is an integer of 2 to 8, x is an average value and a positive number of 0.05n to (n-1), A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000.

Polyetherpolyol derivative and process for preparing the same

A polyurethaneurea which comprises a polymer obtained by a polyaddition reaction of (a) a polyetherpolyol derivative and (b) an at least 2-valent polyisocyanate, the polyetherpolyol derivative having at least, on average, one terminal amino group in which at least, on average, one hydroxyl group is substituted by a residue of para-aminobenzoic acid ester, and having the general formula ##STR1## wherein n is an integer of 2 to 8, x is an average value and a positive number of 0.05 n to (n-1), A is an n-valent radical obtained by removal of hydroxyl groups from an n-valent polyoxyalkylenepolyol having a molecular weight of 400 to 10,000.

Growing community of inventors

Osaka, Japan

Yoshio Yamada