摘要:
Provided is a silphenylene-containing photocurable composition including: (A) a specific silphenylene having both terminals modified with alicyclic epoxy groups, and (C) a photoacid generator that generates acid upon irradiation with light having a wavelength of 240 to 500 nm. Also provided is a pattern formation method including: (i) forming a film of the photocurable composition on a substrate, (ii) exposing the film through a photomask with light having a wavelength of 240 to 500 nm, and if necessary, performing heating following the exposure, and (iii) developing the film in a developing liquid, and if necessary, performing post-curing at a temperature within a range from 120 to 300° C. following the developing. Further provided is an optical semiconductor element obtained by performing pattern formation using the method. The composition is capable of very fine pattern formation across a broad range of wavelengths, and following pattern formation, yields a film that exhibits a high degree of transparency and superior light resistance. The composition may also include: (B) a specific epoxy group-containing organosilicon compound.
摘要:
Bisphenol derivatives having both alcoholic hydroxyl and allyl groups are novel and useful as reagents for modifying organic resins and silicone resins.
摘要:
There is disclosed a silphenylene skeleton-containing silicone type polymer comprising a repeating unit represented by the following general formula (1) and having a weight average molecular weight of 5,000 to 40,000. There can be a novel silphenylene skeleton-containing silicone type polymer which enables to satisfy both chemical resistance and adhesiveness to a substrate and can be used as a material for a thermosetting resin for forming coatings for protecting substrates, circuits, and interconnections; and a method for manufacturing the same.
摘要:
An oil compound used for defoaming includes (A) a substantially hydrophobic organopolysiloxane having a viscosity of 10 to 100,000 mm2/second at 25° C., and (B) finely divided silica that has undergone surface hydrophobization treatment, wherein when an insoluble matter is collected from the oil compound by using hexane and the spectra of the insoluble matter are measured by 29Si-CP/MAS-NMR, the peaks of the silica due to the SiO4/2 (Q) units on the silica surface are such that a ratio [(Q2+Q3)/Q4] between a total area (Q2+Q3) wherein Q2 is a peak area of a silicon atom having two unreacted silanol groups and Q3 is a peak area of a silicon atom having one unreacted silanol group and an area Q4 wherein Q4 is a peak area of a silicon atom having no unreacted silanol group is at 70/30 to 20/80.