Teijin Limited

Nissan Chemical Industries Limited

Kiyoshi Nawata

Kiyokazu Tsunawaki

Yuzo Aito

Yuji Mitani

Toshihiro Santa

Masahiro Shiozaki

Katsuhisa Watanabe

Hideaki Suzuki

Yoshiki Suzuki

Yuji Makino

Wataru Funakoshi

Takatoshi Kuratsuji

Togi Suzuki

Osamu Wada

Kenji Hosoda

Kazumi Tsubaki

Seiji Mochizuki

Masahiro Yamaguchi

Takaharu Kubota

Akira Yanagimoto

Shunichi Kumazawa

A biodegradable copolymer having the constituent units represented by the structures (I) and (II): ##STR1## wherein X represents a hydrogen atom, an acyl group having the formula RCO-- where R is a hydrocarbon group having 1 to 20 carbon atoms, an alkoxy group having to 20 carbon atoms, and Y represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, and m and n are independently integers of 1 or more, m+n is at least 10, and m/(m+n) is at least 0.01 and a pharmaceutical composition containing the same.

Biodegradable copolymer from hydroxy proline

A reagent for measuring immune complexes fixed with an anti-C3 antibody Facb fragment. By using the reagent, immune complexes existing in the blood serum or body fluid are quantitatively measured.

Reagents for measurement of immune complexes and method for measurement

Hollow water-absorbing polyester filaments, each having fine pores evenly distributed throughout the filament and extending approximately in parallel to the filament axis, are produced by melt-spinning a blend of a polyester and a pore-forming agent consisting of at least one sulfonate compound of the formula:

Hollow water absorbing polyester filaments and a process for producing

A fire-retardant polyester composition comprising a fiber-forming linear polyester having an intrinsic viscosity of at least 0.1 and a fire retardant containing phosphorus and bromine, wherein at least 70 mole % of the polyester consists of a recurring unit of the formula ##STR1## wherein n represents an integer of 2 to 6, and the fire retardant is a copolyphosphonate composed of 1 mole of a recurring unit of the formula ##STR2## wherein Y represents an isopropylidene or sulfonyl group, and R represents a phenyl or benzyl group, and 0.25 to 10 moles of a recurring unit of the formula ##STR3## wherein R represents a phenyl or benzyl group, the proportion of the fire retardant being 1 to 20 parts by weight per 100 parts by weight of the polyester.

Fire-retardant polyester compositions

New curable monomeric aromatic imidodicarboxylic acid diallyl esters, such as 4-allyloxycarbonyl-N-(allyloxycarbonylmethyl)phthalimide, 1,2-ethylene bis(4-allyloxycarbonylphthalimide), or N,N'-bis(allyloxycarbonylmethyl) pyromellitimide. When heated in the presence of a free radical initiator, these monomers give cured polymers having very superior mechanical strength, thermal stability, chemical resistance and electrical properties. If this polymerization is stopped before the reaction mixture is gelled, prepolymers can be obtained. The cured polymers are especially useful as electronics materials and engineering plastics.

Aromatic imidodicarboxylic acid diallyl esters, prepolymers thereof,

A radical initiator-curable diallyl ester composition consisting essentially of 80 - 100% by weight of the following components (A) and (B): A. a prepolymer wherein

Radical initiator-curable diallyl ester compositions and cured  resins

New curable monomeric aromatic imidodicarboxylic acid diallyl esters, such as 4-allyloxycarbonyl-N-(allyloxycarbonyl-methyl)phthalimide, 1,2-ethylene bis (4-allyloxycarbonylphthalimide), or N,N'-allyloxycarbonylmethyl) pyromellitimide. When heated in the presence of a free radical initiator, these monomers give cured polymers having very superior mechanical strength, thermal stability, chemical resistance and electrical properties. If this polymerization is stopped before the reaction mixture is gelled, prepolymers can be obtained. The cured polymers are especially useful as electronics materials and engineering plastics.

Growing community of inventors

Matsuyama, Japan

Kiyoshi Nawata