Abstract: A molding compound in swelling gel phase is prepared by crushing a swelling gel, swelled with a monomer in liquid phase which polymerizes a compound having three-dimensional linking by a radical polymerization reaction, into a predetermined size, and a molding compound (z) is made to adhere to a surface of the molding compound in swelling gel phase so that color difference between a color tone of the molding compound (z) and a color tone of the molding compound in swelling gel phase is not less than 3 in a case where the molding compound (z) is provided on the surface of the molding compound in swelling gel phase, which does not substantially dissolve in the monomer and has a weight change ratio ranging from 0 to +200% in a case where the molding compound in swelling gel phase is completely impregnated with the monomer, so that the molding compound in swelling gel phase and the molding compound (z) are molded under a thermal pressure, and a ratio of the molding compound (z) to a total amount of the molding co

Abstract: A molding compound in swelling gel phase is prepared by crushing a swelling gel, swelled with a monomer in liquid phase which polymerizes a compound having three-dimensional linking by a radical polymerization reaction, into a predetermined size, and a molding compound (z) is made to adhere to a surface of the molding compound in swelling gel phase so that color difference between a color tone of the molding compound (z) and a color tone of the molding compound in swelling gel phase is not less than 3 in a case where the molding compound (z) is provided on the surface of the molding compound in swelling gel phase, which does not substantially dissolve in the monomer and has a weight change ratio ranging from 0 to +200% in a case where the molding compound in swelling gel phase is completely impregnated with the monomer, so that the molding compound in swelling gel phase and the molding compound (z) are molded under a thermal pressure, and a ratio of the molding compound (z) to a total amount of the moldi

Abstract: Provided is a method for continuously forming a synthetic stone having a thickness with a high degree of accuracy, without using a complicated apparatus, in which resin compound is filled between belt-like upper and lower films in two layers running horizontally on a band-like floor, upstream thereof, so as to continuously form the synthetic stone, a regulating plate 31 is disposed above the band-like floor 3 and downstream of the resin filling part, and the resin compound (R) is continuously filled in a condition in which the gap between the regulating plate and the band-like floor 3 and is set to a predetermined value. Further, the filling volume of the resin compound is adjusted in accordance with a variation in the thickness of the formed resin plate having passed through the regulating plate.

Abstract: A method including: based on a primary mold having a surface pattern identical with that of a composition to be produced, making a secondary mold having a low melting point sprayed metal layer of Zn or the like to which the surface pattern of the primary mold is transferred; next, after carrying out mold-releasing treatment on the secondary mold surface, spraying a high melting point metal such as Ni or the like; reinforcing the back side of the thus-formed high melting point sprayed metal layer with FRP or the like; hardening said FRP or the like; and then, releasing a composition consisting essentially of the high melting point sprayed metal layer and the reinforcing resin layer from the secondary mold.

Abstract: This invention is directed to a setting resin composition comprising (A) a radically polymerizable monomer, (B) a thermoplastic resin soluble or dispersible in said monomer (A), (C) an epoxy resin, (D) at least one polyfunctional carboxylic acid compound selected from said group consisting of polyfunctional carboxylic acids and anhydrides thereof, and (E) an inorganic filler and using said components in proportions such that, based on said amount of said radically polymerizable monomer (A) taken as 100 parts by weight, the amount of said thermoplastic resin (B) is in the range of 5 to 75 parts by weight, that of said epoxy resin (C) in the range of 10 to 100 parts by weight, that of said inorganic filler (E) in the range of 100 to 1,000 parts by weight, and that of said polyfunctional carboxylic acid compound (D) in the range of 0.5 to 4.

Abstract: Disclosed herein is granite-like artificial stone which comprises a matrix and chips dispersed therein, said matrix being a cured product of specific radical-polymerizable monomers and an inorganic filler powder, and said chips being a cured product of a mixture (II) which contains the components identical or similar to those in the mixture (I) but giving a different clarity and/or color tone from the cured product of the mixture (I). The artificial stone gives the appearance of granite and is superior in fabricability, heat resistance, hot water resistance, weather resistance, yellowing resistance, and stain resistance.