摘要:
Polymers comprising recurring units of formula (1) and recurring units having acid labile groups are novel. At least one of R1 and R2 is fluorine or a trifluoromethyl group, and the remainder is hydrogen or a C1-20 alkyl, R3 and R4 each are hydrogen or an unsubstituted or fluorine-substituted C1-20 alkyl, or R3 and R4 may form a ring. Using such polymers, resist compositions featuring transparency to excimer laser light and alkali solubility are obtained.
摘要:
A synchronous semiconductor memory device for switching an output route of read data based on latency information includes a read amplifier, a register block, a first signal route, a second signal route, and a switching circuit. The read amplifier amplifies the data read from a memory cell. The register block latches the amplified data and outputs the latched data at a timing corresponding to latency information. The first signal route is connected to the read amplifier to bypass the register block. The second signal route is connected to the read amplifier via the register block. The switching circuit is connected to the first and second signal routes and outputs either the amplified data or the latched data.
摘要:
The present invention relates to a method for preparing lactone polymers, carbonate polymers, lactone-carbonate block copolymers and lactone-arbonate random copolymers via a ring-opening addition reaction of a lactone monomer, a cyclic carbonate monomer or a mixture thereof using an initiator and in the presence of a specific titanium-type Lewis acid catalyst. The resulting polymers have a molecular weight distribution (Mw/Mn) approximately equal to 1 or a extremely high purity of single-structure components. The polymer molecules range in an oligomer region to a molecular weight of approximately 200,000. The present invention also relates to a method for preparing lactone polymers, carbonate polymers and lactone-carbonate copolymers having a narrow molecular weight distribution and which can be obtained via a continuous polymerisation of a lactone monomer and/or a cyclic carbonate monomer using an initiator in an extruder in the presence of a specific titanium-type Lewis acid catalyst or an aluminium-type Lewis acid catalyst. The present invention also relates to these resulting polymers.
摘要:
A hydroxystyrene-(meth)acrylate copolymer in which some phenolic hydroxyl groups are crosslinked with acid labile groups is blended as a base resin in a positive resist composition, which has the advantages of enhanced dissolution inhibition and an increased dissolution contrast after exposure.
摘要:
A flame-retardant resin composition comprising the following components (A), (B), (C) and (D): (A) 100 parts by weight of a thermoplastic resin comprising 1 a polycarbonate resin, or 2 a polycarbonate resin and a non-polycarbonate resin, (B) from 0.1 to 40 parts by weight of a phosphorus compound, (C) from 0.001 to 40 parts by weight of a boron compound, and (D) from 0.01 to 5 parts by weight of a polyorganosiloxane and/or from 0.001 to 5 parts by weight of a fluorine resin.
摘要:
Disclosed is a dry cell comprising a depolarizing mix consisting of manganese dioxide, carbon black and an electrolytic solution containing, as a major electrolyte, a neutral salt, a zinc anode and a cathode collector made of an alloy containing iron as a major component and more than 10% by weight of chromium.
摘要:
A vehicle door lock operating mechanism wherein a reversible electric motor 6 drives a pivotally mounted sector gear 10 through a centrifugal clutch 7 and reduction gears 8, 9 and 32. The sector gear is coupled to the pivotal actuating lever 2 of a lock mechanism 1 by means (ex. slot 13 and guide pin 14) which permit the free travel or play of the actuating lever over a distance equal to its stroke between the locked and unlocked positions. A manual operating knob 3 is also coupled to the lever 2, and a spring 15 biases the sector gear 10 back into a neutral or middle position whenever the motor 6 is deenergized, whereby low force manual operation may be performed independently of the sector gear and reduction gears. The centrifugal clutch, when disengaged in response to the motor deenergization, enables the spring 15 to easily drive the sector gear back into its neutral position.
摘要:
An image display device includes a lens array, and a scanner to two-dimensionally scan the lens array with a light beam for image display, in which each of lenses of the lens array includes a convex surface with different curvatures in two directions orthogonal to the optical axis of the lens and to each other.
摘要:
An image display device includes a lens array, and a scanner to two-dimensionally scan the lens array with a light beam for image display, in which each of lenses of the lens array includes a convex surface with different curvatures in two directions orthogonal to the optical axis of the lens and to each other.
摘要:
An image display device includes a lens array, and a scanner to two-dimensionally scan the lens array with a light beam for image display, in which each of lenses of the lens array includes a convex surface with different curvatures in two directions orthogonal to the optical axis of the lens and to each other.