摘要:
A heat-resistant copolymer obtained by copolymerizing (A) 72-82 parts by weight of .alpha.-methylstyrene and (B) 26-18 parts by weight of acrylonitrile, characterized in that the copolymer contains (a) 0-15% by weight of monomer chain 13 (A)-(A)-(A)--, (b) 50% by weight or more of monomer chain --(A)-(A)-(B)--, and (c) 50% by weight or less of monomer chain --(B)-(A)-(B)--, the total of (a), (b) and (c) being 100% by weight. This copolymer is excellent in heat stability and moldability when molded at high temperatures, and the blending of this copolymer with other thermoplastic resins gives thermoplastic resins with excellent heat resistance.
摘要:
A heat-resistant copolymer obtained by copolymerizing (A) 72-82 parts by weight of .alpha.-methylstyrene and (B) 26-18 parts by weight of acrylonitrile, characterized in that the copolymer contains (a) 0-15% by weight of monomer chain --(A)--(A)--(A)--, (b) 50% by weight or more of monomer chain --(A)--(A)--(B)--, and (c) 50% by weight or less of monomer chain--(B)--(A)--(B)--, the total of (a), (b) and (c) being 100% by weight. This copolymer is excellent in heat stability and moldability when molded at high temperatures, and the blending of this copolymer with other thermoplastic resins gives thermoplastic resins with excellent heat resistance.
摘要:
A thermoplastic resin composition obtained by melt-mixing:(a) 4 to 95% by weight of a polyphenylene ether resin,(b) 4 to 95% by weight of a polyamide,(c) 1 to 50% by weight of a rubbery polymer, and(d) if necessary, 91% by weight or less of a styrene resin (d)[the sum of the (a), (b), (c) and (d) components is 100% by weight] in the presence of 0.001 to 10% by weight, based on the total weight of the (a), (b), (c) and (d) components, of at least one functional group-containing unsaturated compound having at least one group selected from the class consisting of carboxyl group, acid anhydride group, epoxy group, hydroxyl group, amino group and amido group and 0.001 to 5% by weight, based on the total weight of the (a), (b), (c) and (d) components, of a peroxide. This thermoplastic resin composition is excellent in balance of impact strength of thin molded product, moldability and heat resistance. Therefore, the composition can be used as molded products such as external and internal trim parts of automobiles, electric and electronic components, housings and the like, requiring a high quality, and accordingly is highly valuable in industrial utilization.
摘要:
A heat resistant thermoplastic resin composition comprising (a) 5 to 99% by weight of a poly(phenylene ether), (b) 95 to 1% by weight of a thermoplastic resin which is obtained by polymerizing in the absence of a rubber-like polymer a resin constituent mixture comprising an aromatic alkenyl compound, an alkenyl cyanide compound, and, if necessary, other alkenyl monomers copolymerizable with said monomers, and (c) up to 94% by weight of other styrenic resins, said thermoplastic resin (b) comprising (A) 1-50% by weight of a polymer having an alkenyl cyanide compound content of 1% by weight or more but less than 10% by weight, (B) 1-70% by weight of a polymer having an alkenyl cyanide compound content of 10% by weight or more but less than 20% by weight, (C) 5-90% by weight of a polymer having an alkenyl cyanide compound content of 20% by weight or more but less than 40% by weight, and (D) up to 70% by weight of a polymer having an alkenyl cyanide compound content of 40% by weight or more, and having a total alkenyl cyanide compound content of 10 to 40% by weight and an intrinsic viscosity of preferably 0.1- 1.5 dl/g as measured in methyl ethyl ketone at 30.degree. C. The above thermoplastic resin composition is excellent in not only heat resistance but also impact resistance, thermal stability, painting, and surface gloss of molded article.
摘要:
An image transfer system has an extracting section that extracts image areas from a document image read by a reading section. A digital signature providing section provides sender's digital signatures to the image areas according to degrees of secrecy. An image file creating section creates an image file including image areas with the sender's digital signatures provided by the digital signature providing section and a sending section sends the image file to a receiving section. A digital signature acquiring section acquires receiver's digital signatures for restricting image areas to be presented to a user. An image area selecting section selects image areas to be presented to the user in accordance with the sender's digital signatures in the image file received by the receiving section and the receiver's digital signatures acquired by the digital signature acquiring section. An output section outputs image areas selected by the image area selecting section.
摘要:
Disclosed is an inertia latch mechanism capable of omitting erection of a pin for swinging an inertia lever. An inertia lever for use in the inertia latch mechanism is constituted of: a lever body swinging by inertia when an impact is applied thereto; a fixture fixed to a case of a disk drive device; and a plate spring member for connecting the lever body and the fixture and permitting swing of the lever body.
摘要:
Even when the frame identifying pattern at the head is misjudged or cannot be obtained, the frame identifying pattern that follows on and the frame corresponding to that frame identifying pattern are acquired and are held, and the position of the frame is judged on the basis of the information of the frame identifying pattern at a timing when the acquired frame identifying pattern is switched, and the positions of all the frames which have been acquired until then are calculated uniquely. Therefore, even when the preamble identifying pattern cannot be correctly detected due to such as flaws, the positions of the frames in the blocks are correctly detected, and the data can be certainly demodulated.
摘要:
An image transfer system has an extracting section that extracts image areas from a document image read by a reading section. A digital signature providing section provides sender's digital signatures to the image areas according to degrees of secrecy. An image file creating section creates an image file including image areas with the sender's digital signatures provided by the digital signature providing section and a sending section sends the image file to a receiving section. A digital signature acquiring section acquires receiver's digital signatures for restricting image areas to be presented to a user. An image area selecting section selects image areas to be presented to the user in accordance with the sender's digital signatures in the image file received by the receiving section and the receiver's digital signatures acquired by the digital signature acquiring section. An output section outputs image areas selected by the image area selecting section.
摘要:
A rotating disk storage device has a mechanism for latching an actuator head suspension assembly (AHSA) positively in a retraction area upon occurrence of an external shock or runaway. In one embodiment, a latch mechanism comprises an AHSA which is supported pivotably, an elastic member which restricts a pivotal movement of the AHSA in a pivot direction A1 of the AHSA, an inertia member adapted to move pivotally in a corresponding pivot direction B2 when the AHSA moves pivotally in the pivot direction A1 while deforming the elastic member elastically, and a latch member having an engaging portion and adapted to move pivotally in a direction A2 opposite from the corresponding pivot direction B2 upon receipt of torque from the inertia member, thereby causing the engaging portion to move to a latching position. The AHSA has two to-be-engaged portions, i.e., a first to-be-engaged portion and a second to-be-engaged portion. Even in the event the engaging portion cannot engage the first to-be-engaged portion, it can engage the second to-be-engaged portion.
摘要:
Embodiments of the present invention provide a rotating disk storage device having a mechanism to reliably retract an actuator into a retraction area in the event that the power supply is suddenly interrupted. A bias chip is embedded in a coil support that supports the voice coil. When a head stays in an access area, the bias chip is away from an end of the voice coil magnet. Therefore, no influence of the magnetic leakage flux is exerted on the bias chip. When the head is in a retraction area, the bias chip is attracted under the influence of the magnetic leakage flux of the voice coil magnet, which thereby produces bias torque causing an actuator to pivotally move in a retraction direction. Accordingly, the bias torque can be utilized as energy for retracting the actuator immediately after power shutdown.