Abstract: This invention provides a thermosetting resin and a method for producing the same, in which 5% to 95% by weight of an aminoplast resin and 5% to 95% by weight of a polyalkylene glycol are subjected to a condensation reaction under alkaline conditions, the resulting reaction product is methoxylated with methanol, and pH of the methoxylated product is controlled in a range from 10 to 11. The thermosetting resin for impregnation of resins or for use in building materials obtained according to the invention is highly stable, can be diluted with water, has excellent workability, stiffness, chemical resistance, water resistance, moisture resistant strength, and adhesion in water, exhibits improved brittleness and has satisfactory flexibility and impact resistance.

Abstract: This invention provides a thermosetting resin and a method for producing the same, in which 5% to 95% by weight of an aminoplast resin and 5% to 95% by weight of a polyalkylene glycol are subjected to a condensation reaction under alkaline conditions, the resulting reaction product is methoxylated with methanol, and pH of the methoxylated product is controlled in a range from 10 to 11. The thermosetting resin for impregnation of resins or for use in building materials obtained according to the invention is highly stable, can be diluted with water, has excellent workability, stiffness, chemical resistance, water resistance, moisture resistant strength, and adhesion in water, exhibits improved brittleness and has satisfactory flexibility and impact resistance.

Abstract: An acrylic rubber composition containing an acrylic ester polymer having a weight-average molecular weight of at least 8,000,000 as a rubber component. This acrylic rubber composition which is free from the disadvantages associated with conventional acrylic rubber can be obtained economically by avoiding the use of expensive raw materials and complicated and therefore costly steps. The acrylic rubber composition shows improvements in the properties inherently possessed by acrylic rubber, i.e., heat resistance, oil resistance, weather resistance, and ozone resistance; exhibits excellent roll processability, gasoline resistance, gas hole resistance, and tensile strength/extensibility balance; and in addition, has high mechanical strength and excellent compression set resistance.

Abstract: An ultra high molecular weight polymer emulsion is produced by emulsion polymerization of a vinyl monomer, wherein the oxygen concentration in the aqueous phase of the reaction system is maintained at a smaller percentage by weight than the percentage by weight of the dissolved oxygen concentration in a 0.5 wt % sodium bisulfite aqueous solution. An emulsifier and a redox polymerization initiator are used for the emulsion polymerization.