Abstract: This invention relates to aminoplast crosslinker resins compositions based on at least partially alkylated reaction products A of melamine, formaldehyde and an alkanol with the following parameters: the ratio of the amount of substance n(CH2O) of combined formaldehyde to the amount of substance n(Mel) of melamine is in the range of from 5.6 mol/mol to 6.2 mol/mol, the ratio of the amount of substance n(RO) of alkyl ether groups in the crosslinker resin to the amount of substance n(Mel) of melamine is in the range of from 5.0 mol/mol to 5.6 mol/mol, the mass fraction of monomer in the resin, calculated as the ratio of the mass of monomer m(1) to the mass m(A) of the reaction products A is between 35% and 55%, to a process for their preparation, and to a method of use thereof as crosslinker in combination with hydroxy-functional polymers for coating of heat-sensitive substrates.

Abstract: This invention relates to aminoplast crosslinker resins compositions based on at least partially alkylated reaction products A of melamine, formaldehyde and an alkanol with the following parameters: the ratio of the amount of substance n(CH2O) of combined formaldehyde to the amount of substance n(Mel) of melamine is in the range of from 5.6 mol/mol to 6.2 mol/mol, the ratio of the amount of substance n(RO) of alkyl ether groups in the crosslinker resin to the amount of substance n(Mel) of melamine is in the range of from 5.0 mol/mol to 5.6 mol/mol, the mass fraction of monomer in the resin, calculated as the ratio of the mass of monomer m(1) to the mass m(A) of the reaction products A is between 35% and 55%, to a process for their preparation, and to a method of use thereof as crosslinker in combination with hydroxy-functional polymers for coating of heat-sensitive substrates.

Abstract: The invention provides a rubber composition comprising 100 parts by weight of a diene rubber (i) and 0.1 to 25 parts by weight of a polyether-based polymer (ii).

Abstract: The invention provides a rubber composition comprising 100 parts by weight of a diene rubber (i) and 0.1 to 25 parts by weight of a polyether-based polymer (ii).

Abstract: The present invention provides a flat knitting machine having a simple construction and provided with rocking sinkers capable of stably operating for high-speed knitting operation without damaging the yarns, and a method of operating the rocking sinkers. The flat knitting machine is provided with rocking sinkers (8), sinker operating means (3) for operating the sinkers (8), needle operating means (19), and a power transmitting mechanism (4, 21) interlocking the needle operating means (19) and the sinker operating means (3) to operate the sinker operating means (3) by at least part of the motion of the needle operating means (19).

Abstract: An emulsion having a dye developing property, comprising aqueous polymer emulsion particles and contained therein, an organic dye developer.

Abstract: Emulsion type rust-preventive baking composition which comprises a polymer emulsion such as an aqueous acrylic resin emulsion and a heat-fusible organic filler having a melting or softening point within the range of 40.degree.-250.degree. C. which is higher by at least 10.degree. C. than the lowest film-forming temperature of the polymer emulsion, as incorporated in the polymer emulsion. When the emulsion type rust-preventive baking composition obtained by the mixture is coated on reinforcing steel rods or the like treatment targests and baked, the heat-fusible organic filler melts and fills pores in the rust-preventive coat film, whereby the coat film is rendered close and compact to produce excellent rust-preventive effect.

Abstract: A method for effectively treating waste water discharged from the ammoxidation process for the production of acrylonitrile which comprises treating waste water or a preliminary oxidized liquid of said waste water with activated carbon in an adsorption and separation zone, subjecting the spent carbon slurry from said adsorption and separation zone to wet oxidation in the presence of copper values and ammonium ions at a pH of not higher than 5 in a regeneration zone to thereby regererate the spent carbon, and recycling the regenerated activated carbon to said adsorption and separation zone. The rate of regeneration of the spent carbon in the regeneration zone can be further increased by adjusting the amount of copper values to at least 1,000 ppm. Thus, the waste water containing extremely hardly decomposable substances can be effectively treated and, at the same time, the spent carbon can be regenerated with less degradation of adsorption capacity.

Abstract: In wet-oxidizing organic waste water containing cyanogen i.e. inorganic-CN, or a compound capable of forming cyanogen under oxidative conditions, if the wet oxidation is conducted in the presence of copper or a copper compound and a specific ammonium salt, COD and the cyanogen concentration can be reduced at highly improved removal ratios. Copper ions resulting from the copper component made present at the wet oxidation step can be effectively removed by precipitation or ion exchange. Accordingly, this treatment method does not cause secondary pollution at all. In case recovery of the copper ions is performed by ion exchange, good results are obtained when the oxidized liquid from the wet oxidation step is flashed at a temperature higher than 100.degree. C. and the pH of the oxidized liquid is adjusted to 4-7 after the cyanogen decomposition step but before the ion exchange treatment. A weakly acidic ion exchange resin is preferably employed.