Polyplastics Co., Ltd.

Ticona Gmbh

Toshio Shiwaku

Masato Suzuki

Kenji Hijikata

Toshio Nakane

Mineo Ohtake

Kenji Furui

Kaoru Yamamoto

Hiroaki Konuma

Alexandra Jacobs

Stefan Wulf

Keiichi Kanaka

Kazufumi Watanabe

Hirokazu Ohshiba

Hiroki Fukatsu

Volker M&ouml;rs

Suzuki Masato

Haruyuki Fukuzawa

Benett Clayton Ward

The present invention provides a very thin planar connector having 2 mm or smaller pitch interval at the lattice area and 0.5 mm or smaller thickness of the lattice area, giving excellent performance in the whole performances such as moldability, flatness, warp-deformation, and heat resistance. A planar connector having a lattice structure within an outer frame is molded by using (C) a resin composition prepared by compounding (A) a liquid-crystalline polymer with (B) a fibrous filler, while the relation between the compounding quantity and the weight-average length of (B) the fibrous filler is controlled to a specified range.

Planar connector

A purpose of the present invention is to obtain a hollow extruded article by easy blow molding or extrusion molding to give a draw down resistance and a uniform wall thickness of the article without damaging low gas permeability which is a characteristic property of a liquid-crystalline polymer. A resin composition for extrusion molding which is prepared by melting and kneading 99-70 wt. % of wholly aromatic polyester amide liquid crystal resin (A) having a melting point of 270-370&#xb0; C. and a melt viscosity at 1000/sec. shear rate of 20-60 Pa&#xb7;s at Temperature T1 which is higher than 20&#xb0; C. from said melting point, and containing (I) 1-15 mole % of 6-hydroxy-2-naphthoic acid residue, (II) 40-70 mole % of 4-hydroxybenzoic acid residue, (III) 5-28.5 mole % of aromatic diol residue, (IV) 1-20 mole % of 4-aminophenol residue, and (V) 6-29.5 mole % of aromatic dicarboxylic acid residue; and 1-30 wt. % of epoxy modified polyolefin type resin (B), and has a melt viscosity at 1000/sec. shear rate of 60-4000 Pa&#xb7;s at said Temperature T1, and a melt tensile strength of 20 mN or more at 14.8 m/min. draw rate is used.

Resin composition for extrusion molding and extrusion-molded article

The present invention provides a liquid crystalline resin composition capable of readily blow-molding a molded article having uniform thickness, with the addition of good blow-moldability owing to the improved drawdown-resistant property, the improved melt-tension increase rate, and other properties without deteriorating the low gas-permeability which is a characteristic of liquid crystalline resin. Specifically, it provides a liquid crystalline resin composition for blow molding, obtainable by melt-kneading: (A) 100 parts by weight of a melt-processable aromatic polyester and/or polyester amide, which can form an anisotropic molten phase; (B) 10 to 25 parts by weight of a styrene-based copolymer composed of 40 to 97% by weight of a styrene group, 60 to 3% by weight of a specific glycidyl ester of &#x3b1;,&#x3b2;-unsaturated acid and 0 to 50% by weight of other vinyl-based monomer, wherein the styrene-based copolymer has epoxy equivalents ranging from 300 to 3000 g/eq, and weight average molecular weights of 30000 or more; and (C) 0 to 100 parts by weight of one or more of fibrous filler, powdery or granular filler, and plate-like filler.

Liquid crystalline resin composition for blow molding

To provide a resin composition, in which a liquid crystal polymer is made into fiber in a molded article to exhibit an extremely high reinforcing effect which has not been available yet, and from which a molded article having an excellent mechanical strength can be manufactured in a stable manner. That is, a thermoplastic resin composition, wherein 100 parts by weight in total consisting of 99-50 parts by weight of a thermoplastic polyester resin (A) not forming an anisotropic molten phase and 1-50 parts by weight of a liquid crystal polymer (B) capable of forming an anisotropic molten phase is blended with 0.001-2.0 parts by weight of one or more kinds of compounds (C) selected from phosphorus oxoacid monoester and diester represented by the following formulae (I) and (II):(X)P(&#x2550;O) (OR)&#x2003;&#x2003;(I)(X)P(OR)&#x2003;&#x2003;(II)wherein n is 1 or 2; X is a hydrogen atom, a hydroxyl group or a monovalent organic group and, when there are plural X's, they may be the same or different; and R is a monovalent organic group and, when there are plural R's, they may be the same or different.

Thermoplastic resin composition and molded object thereof

A batch type apparatus for producing a liquid crystalline polymer includes a reactor, a first gas-pressurizing unit, a die-head, a shut-off valve, and a die-plate. The reactor produces a liquid crystalline polymer capable of forming an anisotropic melt phase. The reactor has a discharge port at a lower portion thereof. The first gas-pressurizing unit is attached to the reactor for discharging under pressure the liquid crystalline polymer by use of an inert gas. The die-head includes, at one end portion thereof, a discharge valve which opens and closes the discharge port; at a middle portion thereof, an internal chamber which communicates with the discharge port and is heated and regulated from the peripheral surface thereof; and at the other end portion thereof, an opening which forms an end portion of the internal chamber. The shut-off valve is connected to the other end portion of the die-head and capable of opening and closing the opening. The die-plate is disposed at the opening of the shut-off valve.

Batch type apparatus for production of liquid crystalline polymer, and method for continuous production of liquid crystalline polymer using the apparatus

The invention relates to a process for the production of spherical, polyester particles, wherein the particle size can be exactly adjusted in the range of 1 to 200 &mgr;m and a particle size distribution with a span (&equals;d90&minus;d10/d50)&lE;1.5, as well as the use of the produced particles for toner compositions in electrophotographic and direct printing systems and powder coatings.

Manufacturing methods, based on non aqueous dispersion techniques, to produce spherical polyester particle size distributions and tailorable mean particle sizes

Polyester resin compositions which are especially adapted for use in blow-molding or extrusion-molding of shaped hollow articles is a melt-blend of (A) polyester base resin, and (B) a styrenic copolymer having between 40 to 97% by weight of units derived from styrene, between 3 to 60% by weight of a glycidyl ester of an .alpha.,.beta.-unsaturated acid, and optionally up to 50% by weight of units derived from an auxiliary vinylic comonomer other than styrene. The styrenic copolymer is preferably present in the compositions in an effective amount between 0.5 to 10 parts by weight, per 100 parts by weight of the polyester base resin, sufficient to impart a melt tension of greater than 5.0 grams and a drawdown index of greater than 2.0 to the composition. The compositions may optionally contain up to 100 parts by weight (based on 100 parts by weight of the polyester base resin) of a fibrous, powdery or flaky filler material.

Blow-moldable polyester resin composition, and blow molded articles

The present invention provides a resin composition enhanced in melt tension and remarkably improved in blow moldability without a parison being drawing down during blow molding, while being freed from the tendency to gelation at high viscosity, maintaining stable flowability and capable of effectively producing a blow molded article of comparatively large size having uniform thickness and excellent appearance. A resin composition for blow molding prepared by compounding 100 parts by weight of a resin component composed of:

Resin composition for blow molding and blow molded item made therefrom

Process for preparing cyclic polyoxymethylene

A heat-resistant moldable copolyester resin is the copolymerization reaction product of a diol monomer component comprised mainly of 1,4-cyclohexanedimethanol, and an acid monomer component which includes first and second carboxylic acid comonomers. The first acid comonomer is a napthalenedicarboxylic acid or an ester-forming derivative thereof, while the second acid comonomer is 4,4'-diphenyldicarboxylic acid or an ester-forming derivative thereof. The first and second comonomers are present in amounts which satisfy the molar fraction ratio:

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Fuji, Japan

Toshio Shiwaku