摘要:
Provided is a method of living radical polymerization which does not necessitate complicated and intricate synthesis of a dormant species and which is highly efficient. A halogenated derivative compound is used as a dormant species for initiating living radical polymerization. The derivative compound is obtained by halogenating an alcohol compound having a non-conjugated structure or an amine compound having a non-conjugated structure with a halogenating agent capable of halogenating an alcohol or amine. A radical produced by elimination of halogen from the halogenated derivative compound is allowed to react with the unsaturated bond of the monomer. Thus, the monomer, which has a radical-reactive unsaturated bond, is polymerized by living radical polymerization. Preferably, the halogenating agent is a compound (NIS or the like) which also has a function as a catalyst.
摘要:
A method for manufacturing a polishing pad made from a polyurethane resin foam having very uniform, fine cells therein and a polishing pad obtained by that method provides a polishing pad having better polishing characteristics (especially, in planarization) while providing improved dressability while maintaining the planarization characteristics and polishing speed of a conventional polishing pad. The polyurethane resin foam is a cured product obtained by reacting an isocyanate-terminated prepolymer with an aromatic polyamine chain extender having a melting point of 70° C. or lower, for example.
摘要:
An object of the invention is to provide a polishing pad that achieves a high polishing rate and has high thickness precision so that the break-in time (dummy polishing time) can be shortened, and to provide a method for producing same. The invention is directed to a polishing pad including a base material layer and a polishing layer provided on the base material layer, wherein the polishing layer includes a thermoset polyurethane foam having roughly spherical interconnected cells with an average cell diameter of 35 to 200 μm, and the polishing layer has a storage modulus E′ (40° C.) of 130 to 400 MPa at 40° C., a ratio of storage modulus E′ (30° C.) at 30° C. to storage modulus E′ (60° C.) at 60° C. [E′(30° C.)/E′(60° C.)] of 1 to less than 2.5, and a ratio of storage modulus E′ (30° C.) at 30° C. to storage modulus E′ (90° C.) at 90° C. [E′(30° C.)/E′(90° C.)] of 15 to 130.
摘要:
An image heating apparatus includes an image heater for heating an image on a recording material. The apparatus also includes a first temperature detecting member that detects a temperature of the image heating member, with the first temperature detecting member provided in a sheet processing region for a recording material of a minimum size. A controller is also provided for controlling electric power supply to the image heater on the basis of an output of the first temperature detecting member. Further provided is a second temperature detecting member is that is capable of detecting a temperature of the image heating member when the image heating member is contacted or is not contacted with a belt. A controller is also provided for controlling the image heating operation on the basis of the temperature of the image heating member.
摘要:
A method for manufacturing a polishing pad prevents slurry leaks and provides a pad that can be used to provide high optical detection accuracy. The method for manufacturing a polishing pad includes forming a groove for injecting a light-transmitting region forming material on the back surface of a polishing layer; injecting the light-transmitting region forming material into the groove and curing the material to form a light-transmitting region; and buffing the front surface of the polishing layer to expose the light-transmitting region on the front surface.
摘要:
Provided is a semiconductor device for a spread spectrum radar apparatus which suppresses spurious signals resulting from non-linearity of active elements. The semiconductor device as the inverse spread spectrum modulation unit for the spread spectrum radar apparatus has a coupled line of two lines and another coupled line of two lines. The semiconductor device includes: an unbalanced to balanced transforming circuit which converts a received signal inputted as an unbalanced signal into a balanced signal pair; a switch circuit having one or more transistors; and a balanced inverse spread spectrum circuit which obtains as differential signal PN signals belonging to the same sequence code as a PN code which is used to generate an original signal of the received signal, also obtains the balanced signal pair from the unbalanced to balanced transforming circuit, and performs inverse spread spectrum modulation on the balanced signal pair by the switch circuit using the PN codes inputted as the differential signal.
摘要:
A production process for a silicon compound represented by Formula (6), characterized by reacting a compound represented by Formula (4) with a compound represented by Formula (5): wherein all of the variables are defined in the specification.
摘要:
The present invention provides an information processing apparatus which can direct a user to a playlist different from a playlist being reproduced. There is provided the information processing apparatus including a content storage unit storing a plurality of contents therein, a playlist storage unit storing a plurality of playlists which is related to at least some of the plurality of contents, a reproducing unit sequentially reproducing a plurality of contents belonging to a first playlist in a plurality of playlists, a candidate content extracting unit extracting one or more candidate contents relating to a content being reproduced by the reproducing unit from the content storage unit, a playlist extracting unit extracting a second playlist to which the extracted candidate contents belong from the playlist storage unit, and a playlist switching unit switching a playlist to be reproduced by the reproducing unit from the first playlist into the second playlist.
摘要:
A curable resin composition which is easily cured by heating or ultraviolet irradiation and capable of forming a thick cured film due to low shrinkage. This curable resin composition enables to obtain a cured product satisfying various characteristics such as heat resistance, chemical resistance, high surface hardness and high refractive index. Also disclosed is a cured product obtained from such a composition. Specifically disclosed is a curable resin composition containing at least one substance selected from the group consisting of condensates (A) obtained by hydrolyzing and condensing a thiol group-containing alkoxysilane (a1) represented by the following general formula (1): R1Si(OR2)3 (1) (wherein, R1 represents a hydrocarbon group having at least one thiol group and 1-8 carbon atoms or an aromatic hydrocarbon group having at least one thiol group, and R2 represents a hydrogen atom, a hydrocarbon group having 1-8 carbon atoms or an aromatic hydrocarbon group), compounds (B) having an epoxy group, compounds (C) having an isocyanate group and compounds (D) having a carbon-carbon double bond.
摘要:
Provided herein is a process for producing a layered sheet. The process involves preparing a cell dispersed urethane composition by a mechanical foaming method. The cell dispersed urethane composition is applied to a base material sheet and cured to produce a polyurethane foam layer of uniform thickness. A releasing sheet may be utilized to make the thickness of the polyurethane foamed layer uniform. Also, provided herein is a layered sheet produced by the above process. The polyurethane foamed layer may have spherical fine cells having an average cell diameter of 20 to 300 μm. The polyurethane foamed layer may have a specific gravity of 0.2 to 0.5. The polyurethane foamed layer may also have a Asker C hardness of 10 to 50 degrees.