Abstract:
Transparent hydrogels comprising isotactic polymethylmethacrylate and syndiotactic polymethylmethacylate make semi-permeable membranes of good strength and permeability which have particular utility in hemodialysis.
Abstract:
PURPOSE:To clearly print the halftone dots and whitened letters of a photosensitive resin plate by using an antihalation material consisting of a substance generating benzoyl radicals under light or heat and phenolic resin or chloroprene resin. CONSTITUTION:Benzoyl methyl ether or the like generating benzoyl radicals under light or heat and phenolic resin including that for a commercially available adhesive or commercially available chloroprene resin are dissolved in a solvent such as toluene or acetone and applied to a support, or said radical generating substance and resin are mixed with an adhesive to form an adhesive layer on a support. A photosensitive layer is then formed to manufacture a material for a photosensitive resin plate. In a plate making process the radical generating substance is decomposed with active light beams, or it is decomposed by heating when the material is manufactured. By the decomposition a benzophenone structure absorbing active light beams is formed through reaction with the resin, and an effective antihalation action is obtd.
Abstract:
PURPOSE:A primer composition usable for porous construction materials, capable of improving adhesiveness and durability of silicone sealants, without peeling of the sealants from wet members, comprising (A) a copolymer of methacrylate and silane and (B) an isocyanate group-containing compound.
Abstract:
PURPOSE:A dispersion for primer which consists of a specific copolymer and a high- molecular compound having a low water absorbability and which is used in bonding a cold-setting silicone sealant with a base material in particular. CONSTITUTION:A dispersion which contains a copolymer (A), obtained from the polymerization of a mixture of a hydroxyl group-containing radical-polymerizable monomer, a carboxyl group-containing radical-polymerizable monomer, and another radical-copolymerizable monomer, and a high-molecular compound (B), having incompatibility with (A), water insolubility, and a water absorbability of 10% or less, e.g., polyamide, polyester, PVC, etc. The preferred mixing ratio of the copolymer (A) and the high-molecular compound (B) for a general purpose primer is 95-40wt% for (A) and 5-60wt% for (B). The dispersion can be used in many kinds of base materials.