36results about How to "Low molecular weight" patented technology

Provided is a method for producing an pressure-sensitive adhesive sheet having an ultraviolet-ray curing-type acrylic pressure-sensitive adhesive layer that can undergo, about one or more monomers therefor, high rate-polymerization to be excellent in productivity, and is also excellent in balance between pressure-sensitive adhesive performances. The method includes: applying, onto a substrate, an ultraviolet-ray curing-type acrylic pressure-sensitive adhesive composition including a photopolymerization initiator, and a monomer-component set that is / includes an alkyl (meth)acrylate; and radiating ultraviolet rays to the composition, thereby curing the composition to form a pressure-sensitive adhesive layer. In the method, the irradiance of the rays radiated in the pressure-sensitive adhesive layer forming step is 25 mW / cm<2> or more. When the radiation dose of the radiated ultraviolet rays is 600 mJ / cm<2> and is 2,400 mJ / cm<2>, the polymerization rate of the monomer-component set is 30% or less, and 70% or more, respectively.

The present invention addresses the problem of providing a layered body of a polyimide film and an inorganic substrate, which is useful for high-yield production of flexible electronic devices comprising fine device arrays such as organic EL display elements. This layered body of a polyimide film and an inorganic substrate is obtained by: washing and cleaning a polyimide film and an inorganic substrate sufficiently to remove foreign matter formed of inorganic substances; bonding the polyimide film and the inorganic substrate together to construct a layered body; subjecting the layered body toa heat treatment at a temperature of at least 350 DEG C but less than 600 DEG C and then to rapid cooling to carbonize and shrink organic foreign matter. By the rapid cooling of the air inside of blisters, blister height is reduced. The number density of blister defects containing carbides is 50 counts / square meter or less, the average blister height is 2 [mu]m or less, and the product of the number density of blisters (counts / square meter) and the average height of the blisters ([mu]m) is 20 or less.

The present invention relates to a kind of sugar juice compound decolorizing agent and the method for sugar juice decolorizing, and this sugar juice compound decolorizing agent is made of H 2 o 2 H with vitamin C 2 o 2 ‑Vc Complex Reagent, H 2 o 2 The mass ratio of vitamin C to vitamin C is 0.01 to 10; the method for decolorizing the sugar juice is: using H 2 o 2 ‑Vc composite reagent decolorizes the sugar juice, which is mixed juice, clear juice, syrup or / and massecuite. During the decolorization process, H 2 o 2 ‑The mass ratio of the amount of Vc composite reagent added to the corresponding sugar juice is 10×10 ‑6 ~2×10 ‑3 . The invention can greatly reduce the color value of the sugar juice and the residual amount of sulfur dioxide, effectively reduce the content of colored substances and the residual amount of sulfur in the final white granulated sugar, and at the same time improve the purity of the white granulated sugar, thereby improving the whiteness of the finished product. The quality of granulated sugar; on the other hand, the process is simple, there is no need to change the original process flow, and the investment and operation costs are low, which significantly improves the economic benefits of the sugar factory.