Mitsui Petrochemical Industries, Ltd.

Fujitsu Corporation

Akio Ohdaira

Toshio Kobayashi

Akira Tanaka

Shunji Abe

Noboru Wakatsuki

Hajime Inagaki

Toru Tomoshige

Yoshinori Morita

Akifumi Kato

Hiroshi Nishikawa

Michiharu Suga

Akira Yokoyama

Kenichi Nishiwaki

Ryoji Ohori

Takashi Yamanaka

Eigo Miura

Yoshikuni Itoh

Kinich Onodera

Method for the pyrolysis of polymers

Carrier latex for use as diagnostic reagent

An optical fiber of heat resistance, low-temperature resistance, flexural resistance, water absorption resistance, chemical resistance, etc., is provided by comprising a composition in which a core component comprises a polycarbonate or a silica type glass, a clad component comprises a graft-modified poly (4-methyl-1-pentene).

Optical fiber

A thermoplastic resin composition comprising a melt mixed product of (A) 70% to 98% by weight of at least one thermoplastic resin selected from the group consisting of polyamides, polyacetals, polyesters, and polycarbonates and (B) 30% to 2% by weight of ultra-high molecular weight polyolefin powder having an intrinsic viscosity [.eta.] of 10 dl/g or more, measured in decalin at 135.degree. C., and having an average particle size of 80 .mu.m or less and having a particle size distribution such that substantially all of the powder particles pass through a sieve having a sieve number of 100 and at least 20% by weight of the total powder particles pass through a sieve having a sieve number of 350. This thermoplastic resin composition has excellent abrasion resistance, excellent impact resistance, and a high critical PV value.

Thermoplastic resin composition

An aqueous dispersion of an olefinic resin composition having improved properties which comprises mixing an olefinic resin composition comprising (a) 50 to 99% by weight of a carboxyl-free olefinic resin having an intrinsic viscosity of 0.1 to 5 and (b) 1 to 50% by weight of a carboxyl-containing modified olefinic resin having an intrinsic viscosity of 0.04 to 1 and an acid number of 30 to 150, the amount of each resin being based on the total amount of resins (a) and (b), which has been melted by heating to a temperature above the melting point, whichever is higher, of the resins, with an aqueous medium heated to a temperature of 140 to 300.degree. C. in the presence of at least 0.2 chemical equivalent, to the carboxyl groups of resin (b), of a base.

Aqueous dispersions of olefinic resin compositions and process for

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Iwakuni, Japan

Akio Ohdaira