PROBLEM TO BE SOLVED: To provide a gas-phase polymerizer made proof against the deposition and growth of polymer by providing a gas-phase polymerizer for forming a powdery polymer with the aid of a solid polymerization catalyst with a gas sparger for diffusing and distributing a gas phase such as a circulated unreacted monomer and a slope-topped body situated at the gas phase inlet under it and di...

PROBLEM TO BE SOLVED: To obtain fine spherical polyamide particles with a homogeneous quality directly from a polyamide monomer by thermally melting the monomer in a polymn. medium at a specified temp., thermally polymerizing the monomer under stirring to thereby form fine polyamide particles dispersed in the medium, and cooling the resultant particles. SOLUTION: This spherical polyamide having a ...

PROBLEM TO BE SOLVED: To obtain a granular powder having excellent powder flow by granulating a polytetrafluoroethylene having a specified particle size under agitation in water in the presence of an organic liquid which forms a liquid-liquid interface between it and water. SOLUTION: A specified amount of water is fed into a granulation tank and warmed to 20-80 deg.C, and a tetrafluoroethylene pol...

PROBLEM TO BE SOLVED: To obtain the subject composition having not only excellent thermal stability and mechanical properties, but also thermal stability when processing the composition, and useful as an electronic part such as a relay by formulating a specific amount of a glass fiber subjected to a specified surface treatment. SOLUTION: This composition comprises (A) 100 pts.wt. aromatic polysulf...

PROBLEM TO BE SOLVED: To simplify the structure, lower the cost, and prevent the irregular abrasion of a brake pad without increasing dimension of a device by setting a sliding resistance between a cylinder and a piston of each cylinder-piston mechanism larger, as the piston-cylinder mechanism is positioned closer to a turn-in side of a disc rotor. SOLUTION: Since a necessity of offsetting a cylin...

PURPOSE:To provide a superconducting material having stable Tc even at liquid N2 temperature and consisting of an oxide containing Bi or Bi and Pd in combination with Sr, La, Ca and Cu and having a compositional ratio of each metallic element expressed by a specific formula. CONSTITUTION:The objective oxide superconductor is a Bi-(Pd)-Sr-La-Ca-Cu oxide containing the above metals and having the co...

A gear arrangement which prevents clattering or rattling noises associated with the engagement of gear teeth with another gear includes a gear and a magnetic toothed disk engaging one side of the gear and having the same diameter as the gear and a different number of teeth than the gear.

A method of applying a spike filter to standoff data in a standoff compensation system, comprising: setting values for the maximum acceptable increase and decrease for standoff data, determining if a positive or negative spike has occurred, and modifying the standoff data in response to an affirmative determination of a positive or negative spike. A method of filtering ultrasonic measurements from...

The present invention relates to a method for implementing vending of products and services over a telecommunication network, in which method the service provider (106-110) is offered the possibility with the help of a voice response server (105) of providing goods and/or services to clients (101) using a vending procedure based on a value-added calls. According to the invention, during a single c...

The subject invention provides water-swellable polymer compositions having reduced dusting tendencies, i.e., reduced amounts of unassociated dust having a maximum diameter less than or equal to 10 microns and/or the tendency to generate reduced amounts of unassociated dust having a maximum diameter less than or equal to 10 microns upon attrition and a process for preparing such compositions. Hydro...

Disclosed is a method of making a free-standing polyimide film. A solution is prepared of a polyamic acid 20 to 98% imidized in an organic solvent and a coating of the solution is applied to a non-stick substrate. The coating is heated to a temperature high enough to evaporate all but 1 to 20 wt % of the solvent and form a film. The film is removed from the substrate and is heated to evaporate the...

A propylene homopolymer or copolymer, or a blend thereof, possessing both sufficient strain hardening, viscoelastic behavior, and melt ductility is heated, melted, and mixed in an extruder with an organic or inorganic physical blowing agent, or a mixture of organic and inorganic physical blowing agents, and with optional compatibilizing agents, nucleating agents, stabilizers and miscellaneous addi...

Fibres of filaments suitable for the production of a nonwoven fabrics, the fibres or filaments consisting essentially of a polyolefin or a copolymer thereof and 0.01-20 % by weight of inorganic particles, substantially all of the particles having a Mohs hardness of less than about 5 and preferably less than about 2, at least 90 % by weight of the inorganic particles having a particle size of less ...

The invention concerns a control apparatus (1) which is used to control an automatic geared or infinitely-variable transmission and is intended to be mounted inside the transmission. The control apparatus (1) comprises a casing formed by a base plate (6), a sealing frame (7) and a cover (8) which are interconnected such that they form a hermetically sealed inner chamber (14) in which is disposed a...

A computer operating method using a distribution program from which application programs may be retrieved and executed, includes setting up a database including at least one table of persons' names, a set table and a document table, and executing a database management distribution program for creating, updating, reproducing, moving and deleting at least the documents. A document is created from do...

A point-of-sale (POS) system and method for gathering, processing and reporting statistics of unattended vending equipment is provided. The method includes: connecting a vending machine to a POS device; connecting a remote device to the POS device to process statistical or diagnostic data concerning the vending machine; detecting an operational status parameter of the vending machine; storing the ...

Verfahren zur materialabtragenden Bearbeitung der Kante einer Halbleiterscheibe, wobei die Halbleiterscheibe auf einem drehbeweglichen Tisch aufliegt, um eine Mittelachse gedreht wird und mit einer Mehrzahl von sich drehenden Bearbeitungswerkzeugen bearbeitet wird, und jedes der Bearbeitungswerkzeuge eine bestimmte Menge an Material von der Kante der Halbleiterscheibe abtragen soll. Das Verfahren ...

A film combination comprising (a) an oriented polymeric substrate which either (i) comprises an intimate blend of polypropylene with maleic acid anhydride modified polypropylene or (ii) is otherwise susceptible of transmitting oxygen and water vapor and has a primer coating on at least one surface: (b) a layer of cross-linked polyvinyl alcohol on (i) the intimate blend or (ii) the primer coating: ...

The process of this invention can be utilized to improve the adhesion between rubber components. It is generally most useful for improving the adhesion between two different pre-cured rubber components or for improving the adhesion between a pre-cured rubber component and an uncured (green) rubber component. However, the technique of this invention can also be employed to improve the adhesion betw...

The invention relates to a method of making synthetic diamond with reduced bowing. Bowing direction has been investigated. Depositing synthetic diamond with a plasma using a concave deposition surface results in a reduced or eliminated bowing, as compared to the use of a flat substrate. Various applications such as heat sink material. $$