Kawasaki Steel Corporation

Toagosei Chemical Industry, Co., Ltd.

Tadahiro Wakui

Kenji Yoshino

Kazuya Takemura

Mitsuhiko Izumi

Masafumi Komatsu

Touru Yamagishi

Yumiko Kumazawa

Tomoshige Ono

Makiko Ijiri

Tokio Iizuka

Toshinobu Suzuki

Hitoshi Saima

Kazumichi Sashi

Toshiro Hirose

Shigeru Takano

Yuichi Uchida

Seiji Hanatani

Yoshihiro Matsumoto

Masatoshi Shinozaki

Toshio Okuyama

Akinori Matsuura

Taichi Ogawa

Kunihiko Eguchi

Yasunobu Uchida

Toru Uno

Process for producing graft modified polyolefins

A glass fiber reinforced polymer which excels in mechanical properties and is suitable for use in a large-sized structural members, formed from a dispersion liquid by dispersing reinforcement glass fibers and particulate thermoplastic resin in a surfactant-containing aqueous medium in which bubbles of air are dispersed, forming a sheet-like web on a porous support plate, and applying heat and pressure to form a sheet. The reinforcement glass fibers include a silane coupling agent while the matrix resin has functional groups bonded to the silane coupling agent. The concentration of said functional groups is higher in the regions adjacent the surfaces of said reinforcement glass fibers than in regions farther removed therefrom, and said concentration progressively decreases in the direction away from said reinforcement glass fibers.

Stampable glass fiber reinforced thermoplastic resin and method of

The improved resin composition comprises:

Resin composition

Thermoplastic resin compositions comprising polyarylate and polyamide resins as main components, and an epoxy resin of the following formula [1] in a predetermined amount are provided. ##STR1## The thermoplastic resin compositions of the invention have good impact strength along with good heat and solvent resistances and good moldability.

Thermoplastic resin composition of polyarylate, polyamide and epoxy resin

The improved process for preparing para-hydroxybenzoic acid comprises reacting potassium phenol with carbon dioxide in an inert reaction medium or without using a reaction medium in the presence of at least one compound selected from the group consisting of the compounds represented by the following general formula I or II: ##STR1## at a reaction temperature of 230.degree.-450.degree. C. and at a carbon dioxide pressure ranging from atmospheric pressure to 6 kg/cm.sup.2 (G). The process may comprise two stages and the first-stage reaction described above is followed by the second stage in which the reaction is further continued with the pressure of carbon dioxide in the system being reduced and/or the reaction temperature being elevated within the range specified above. Also, phenol may be used as the starting material instead of potassium phenolate.

Process for preparing para-hydroxybenzoic acid

A resin composition for a composite-type vibration-damping material which comprises a saturated copolyester having a weight average molecular weight of at least 10,000 and a softening point of 50.degree. to 150.degree. C. and a polyfunctional isocyanate compound as a cross-linking agent and which, when cross-linked, has a degree of gelation (degree of cross-linking) of at least 10% and a composite-type vibration-damping material produced by use of the resin composition, have excellent adhesive strength and formability. When the resin composition is admixed with a conductive substance, a vibration-damping material produced by use of the admixture has excellent spot-weldability in addition to the above-mentioned excellent properties.

Resin composition for composite-type vibration-damping material,

Provided herein are an aromatic polyester having superior physical properties which is composed of the following units ##STR1## an aromatic polyester amide formed by introducing a prescribed amount of amide linkage into said aromatic polyester; filament thereof; and a composition formed by adding an inorganic filler or magnetic powder to said polymers.

Aromatic polyester, aromatic polyester amide, filaments thereof and

Thermoplastic resin compositions comprising polyarylate and polyamide resins as main components, polyethylene terephthalate and an epoxy resin of the following formula [1] in a predetermined amount are provided. ##STR1##

Composition of polyarylate, polyamide, polyethylene terephthalate and

An improved polyarylate resin is provided, which resin comprises the following units (I) to (IV) ##STR1## the units (I) being contained in an amount of from 3 to 30 mole %, the units (II) being contained in amount of not less than 30 mole %, the units (III) being contained in an amount of not less than 30 mole %, and the units (IV) being contained in an amount of not larger than 25 mole %, each based on the total moles of the units (I) to (IV). The polyarylate resin has good mechanical strength, heat resistance, resistance to color change, transparency, moldability and flame retardancy. A resin composition comprising the polyarylate resin, a polyamide and an epoxy resin is also provided.

Modified polyarylate resin and composition comprising the same

An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.

Aromatic polyesters, polyesteramides, and compositions thereof

Copolyesteramides consisting of specific units can be injection molded at a low temperature into a part having a high heat distortion temperature. A filled composition is obtained by blending the copolyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the copolyesteramide with an magnetic powder. The copolyesteramide consists essentially of units &lt;I&gt;, &lt;II&gt;, &lt;III&gt;, &lt;IV&gt;, and &lt;V&gt; of the following formulae: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently at least one divalent radical selected from the group consisting of para-phenylene, 2,6-naphthalene, and 4,4'-biphenylene,

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Chiba, Japan

Tadahiro Wakui