摘要:
One of brake pads 5 is pressed against the disc rotor D by a piston of a caliper 3 which is floatably supported on the carrier 2, and in reaction thereto, the other brake pad 5 is pressed against the disc rotor D by a claw portion 14 on the caliper 3, thereby producing a braking force. During brake release, the spring force of a return spring 22 separates the brake pad 5 from the disc rotor D. A positioning convex portion 27 is provided on the carrier 2 in a standing position adjacent to the return spring 22, and serves to restrict the sideward movement of the distal end portion of the return spring 22. Thus displacement and deformation of the return spring can be prevented, and its functions can be maintained.
摘要:
A plastic optical element producing method produces a plastic optical element by an injection molding, and includes the step of cooling the optical element to a room temperature to cool an optical surface of the plastic optical element with priority over other surfaces of the plastic optical element in a state where a temperature of the plastic optical element is within a predetermined temperature range which is less than or equal to a glass transition temperature of the resin material.
摘要:
Polymers comprising recurring units of cycloolefin having fluorinated alkyl introduced therein are novel and have transparency and alkali solubility. Using the polymers, resist compositions featuring low absorption of F2 excimer laser light are obtained.
摘要:
Stabilizing an aqueous solution of an alkali metal salt of partial alkyl esters of phosphoric acid by adding 1 to 10 weight percent of C3-12 polyhydric alcohol having three or more of hydroxyl groups to an alkali metal salt of partial alkyl esters of phosphoric acid having linear of branched-chain alkyl groups of 16 to 22 average carbon number, 0.6 to 1.0 degree of phosphorylation and 60 to 100% of neutralization degree, and providing a fiber finish containing the stabilized aqueous solution as a major component.
摘要:
Polymers comprising recurring units of an acrylic derivative of fluorinated backbone represented by formula (1) are novel. R1, R2 and R3 are independently H, F, C1-20 alkyl or fluorinated C1-20 alkyl, at least one of R1, R2 and R3 contains fluorine, and R4 is an acid labile group. Using such polymers, resist compositions featuring low absorption of F2 excimer laser light are obtained.
摘要:
A copolymer of an acrylate monomer containing fluorine at &agr;-position with a norbornene derivative is highly transparent to VUV radiation and resistant to dry etching. A resist composition using the resin as a base polymer is sensitive to high-energy radiation below 200 nm, has excellent sensitivity, and is suited for lithographic microprocessing.
摘要:
Onium salts of arylsulfonyloxynaphthalenesulfonate anions with iodonium or sulfonium cations are novel. A chemically amplified resist composition comprising the onium salt as a photoacid generator is suited for microfabrication, especially by deep UV lithography because of many advantages including improved resolution, improved focal latitude, minimized line width variation or shape degradation even on long-term PED, minimized debris after coating, development and peeling, and improved pattern profile after development.
摘要:
A chemical amplification, positive resist composition is provided comprising (A) a photoacid generator and (B) a resin which changes its solubility in an alkali developer under the action of acid and has substituents of the formula: Ph—(CH2)nOCH(CH2CH3)— wherein Ph is phenyl and n=1 or 2. The composition has many advantages including improved focal latitude, improved resolution, minimized line width variation or shape degradation even on long-term PED, minimized defect left after coating, development and stripping, and improved pattern profile after development and is suited for microfabrication by any lithography, especially deep UV lithography.
摘要:
Disclosed are novel tert-butyl 4,4-bis(4′-hydroxyphenyl)pentanoate derivatives represented by the following general formula (I); wherein R1 represents a protective group which can be readily eliminated under an acidic condition, and R2 represents a hydrogen atom, a lower alkyl group or a lower alkoxy group: and high energy radiation-responsive positive resist materials using said novel derivatives as dissolution inhibitors.
摘要:
A coating composition that can be applied to a lens, a method of making the coating composition, and a coated lens comprising a cured coating composition of the invention are disclosed. The coating composition is produced by providing a mixture comprising metal oxide colloid particles and an organosilicon compound, and adding an acetylacetonate metal salt and an aliphatic amine to the mixture.