摘要:
Coated, reinforced composites are prepared by a process in which(i) a liquid composition comprising a photocurable residue and a residue having at least one epoxide group or phenolic hydroxyl group is applied to the surface of a mould,(ii) the composition is exposed to actinic radiation until it solidifies,(iii) reinforcement and a thermosettable composition are applied to the solidified layer, this composition containing an epoxide resin or a phenolic resin,(iv) the assembly is heated to form a cured moulding, and(v) the moulding is removed from the mould.The composition used in the first stage may be a mixture of a photocurable resin and an epoxide or phenolic resin, or a dual-functional resin having, in the same molecule, at least one photocurable group and at least one epoxide or phenolic hydroxyl group, which resin photocures in stage (ii) to produce a thermosettable resin, or it may be an epoxide resin or a phenolic resin together with a curing agent that is activated by heat and one that is activated by actinic radiation.
摘要:
Optical patterns formed by localized optical density or refractive index variations in glass are produced by impregnating a porous glass support with a photolyzable organometallic compound and selectively exposing the glass to a photolyzing light source to cause the photolytic decomposition of the organometallic compound in exposed portions of the glass. The patterns are fixed, if desired, by removing unreacted organometallic compound from the pores.
摘要:
Novel polymer supported catalysts are prepared by photo-irradiation of low valent transition metal compounds such as Co.sub.2 (CO).sub.8, Rh.sub.4 (CO).sub.12 or Ru.sub.3 (CO).sub.12 in the presence of solid polymers containing amine ligands such as polyvinyl pyridine. Hydroformylation of olefins to aldehydes at ambient conditions has been demonstrated.
摘要:
A photoconductive binder layer comprising a particulate mixture of photosensitive titanium dioxide and photosensitive cadmium pigment dispersed in an insulating resin binder.
摘要:
THIS INVENTION RELATES TO PHYSICAL DEVELOPMENT OF A PHOTOGRAPHIC REPRODUCTION SYSTEM WITH A PHYSICAL DEVELOPER. THE STEP OF PHYSICAL DEVELOPMENT COMPRISES CONTACTING AN EXPOSED PHOTOSENSITIVE LAYER CONTAINING THE OXIDIZING COMPONENT OF A CHEMICAL REDOX SYSTEM, SUCH AS SILVER NITRATE, WITH THE REDUCING COMPONENT OF THE REDOX SYSTEM WHERE THE REDUCING COMPONENT IS A MIXTURE OF A SLOW-ACTING REDUCING AGENT AND A FAST-ACTING REDUCING AGENT. THE USE OF A MIXED REDUCING AGENT AS DESCRIBED PERMITS DEVELOPMENT OF IMAGES OF IMPROVED DENSITY AND CONTRAST BECAUSE DEVELOPMENT INITIATES AND TAKES PLACE WITHIN THE PHOTOSENSITIVE LAYER RATHER THAN ON ITS SURFACE OR BEYOND ITS SURFACE AS TYPICALLY ENCOUNTERED WITH PRIOR ART DEVELOPERS. AN OVERALL PROCESS IN ACCORDANCE WITH THE INVENTION COMPRISES SELECTIVELY EXPOSING THE REPRODUCTION SYSTEM TO ACTIVATING RADIATION AND DEVELOPING IN THE MANNER ABOVE DESCRIBED. A PORTION OR ALL OF THE OXIDIZING COMPONENT OF THE REDOX SYSTEM MAY BE CONTAINED WITHIN THE PHOTOSENSITIVE LAYER AT THE TIME OF EXPOSURE TO GIVE A DIRECT READ-OUT OR IT IS POSSIBLE TO APPLY ALL OF THE OXIDIZING COMPONENT AT A TIME SUBSEQUENT TO EXPOSURE FOLLOWED BY CONTACT WITH THE REDUCING PORTION OF THE REDOX SYSTEM. A PHOTOSENSITIVE LAYER COMPRISING A PHOTOCONDUCTOR THAT BECOMES REVERSIBLY ACTIVATED UPON EXPOSURE TO ACTIVATING RADIATION IS PREFERRED. TITANIUM DIOXIDE HAVING A PARTICLE SIZE LESS THAN ABOUT 250 MILLIMICRONS AND WHICH HAS BEEN HEATED AT A TEMPERATURE BETWEEN ABOUT 200* C. AND 950* C. IS THE PREFERRED PHOTOCONDUCTOR.
摘要:
The present invention discloses a method of producing a pattern-formed structure, comprising the processes of: preparing a substrate for a pattern-formed structure having a characteristic-modifiable layer whose characteristic at a surface thereof can be modified by the action of photocatalyst; preparing a photocatalyst-containing-layer side substrate having a photocatalyst-containing layer formed on a base material, the photocatalyst-containing layer containing photocatalyst; arranging the substrate for a pattern-formed structure and the photocatalyst-containing-layer side substrate such that the characteristic-modifiable layer faces the photocatalyst-containing layer with a clearance of no larger than 200 μm therebetween; and irradiating energy to the characteristic-modifiable layer from a predetermined direction, and modifying characteristic of a surface of the characteristic-modifiable layer, thereby forming a pattern at the characteristic-modifiable layer. According to this method, a highly precise pattern can be formed without necessity to carry out any post-treatment after exposure. Further, there is no concern that the pattern-formed structure itself deteriorates because the produced pattern-formed structure is free of the photocatalyst.
摘要:
A method for fabricating a disc stamper is provided. First, a substrate is provided. Next, a layer of a coatable inorganic material is coated on the substrate, wherein the coatable inorganic material is an oxide, in which the chemical element constitution is more than one element selected from the group consisting of Te, Al, Zr, and Ti. Next, a laser beam is utilized to perform direct write on the layer of the coatable inorganic material to form a relief pattern. Thereafter, a metal layer is electroplated on the relief pattern. Next, the metal layer is separated from the relief pattern. The layer of the coatable inorganic material is utilized to form the relief pattern, so that it is more compatibility to equipment apparatus and lower cost in contrast with sputtered PTM process.
摘要:
A photosensitive lithographic printing plate comprises a photosensitive layer and a protective layer formed in this order on a support, wherein the photosensitive layer has a maximum peak of spectral sensitivity within a wavelength range ranging from 390 to 430 nm, the minimum exposure for the photosensitive lithographic printing plate for image formation at a wavelength of 410 nm (S410) is at most 100 μJ/cm2, and the relation between the minimum exposure for image formation at a wavelength of 450 nm (S450) and the minimum exposure for image formation at a wavelength of 410 nm (S410) is 0
摘要翻译:感光性平版印刷版包括在支撑体上依次形成的感光层和保护层,其中感光层在390〜430nm的波长范围内具有光谱灵敏度的最大峰值,光敏平版印刷的最小曝光 波长410nm的图像形成用印刷板(S410)为至多100μJ/ cm 2以下,波长为450nm的图像形成的最小曝光(S450)与 波长410nm的图像形成的最小曝光(S410)为0