Abstract:
PROBLEM TO BE SOLVED: To provide silylated polyurethanes of exhibiting an excellent combination of mechanical properties, capable of forming a low-viscosity of sealant by curing at a reasonable time, and not having an excessive viscosity. SOLUTION: The silylated polyurethanes is prepared by reacting a polyol component having a terminal unsaturation less than 0.02 meq/g with a diisocyanate component to generate a hydroxyl-terminated prepolymer, and by hindering terminals of the prepolymer with an isocyanate silane of Formula OCN-R-Si-(X)m(-OR 1 ) 3-m where m is 0, 1 or 2, each R 1 is alkyl containing 1 to 4 of carbon atoms, each X is alkyl containing 1 to 4 of carbon atoms, and R is a bifunctional organic group. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a glass composition characterized by having little batch-to-batch variations in the properties of the glass products made thereof. SOLUTION: The glass composition contains 40 to 99 wt.% SiO 2 with a softening temperature ranging from 600 to 1650°C, and wherein the standard deviation of softening temperature measurements obtained from 10 or more randomly selected samples of glass articles obtained from the lot is 10°C or less. Further, the standard deviation σ of softening temperature measured from 10 or more randomly selected samples of glass articles in the lot is 5°C or less. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To minimize the hazards of causing breakage, and waves and wrinkles or cracks of an optical film due to overheat in regard to the optical substrate used for applications such as liquid crystal display, projection display, traffic signal and illuminated sign board. SOLUTION: The optical substrate has a dispersed material excellent in thermal conductivity as compared with the dispersed material in the prior art such as film and sheet and has the requisite thermal conductivity property in order to minimize the heat generation problem in LCDs. A preparing method of the optical substrate is also provided. The optical substrate comprises at least one layer comprising glass or polymer material and boron nitride particles. The boron nitride has required optical characteristics and excellent thermal conductivity. COPYRIGHT: (C)2007,JPO&INPIT