Abstract: A continuous-cast low-carbon resulfurized free-cutting steel which consists in weight percentage ofC: 0.05-0.15,Mn: 0.5-1.5,P: 0.05-0.10,S: 0.15-0.40,O: 0.010-0.020,one or more of Pb, Bi, and Te as accompanying elements for improving machinability at a following content:Pb: 0.05-0.40,Bi: 0.05-0.40, andTe: 0.003-0.10,Si: 0.003 or less,Al; 0.0009 or less, andthe remainder consisting of Fe and unavoidable impurities, and contains a manganese sulfide-base inclusion with the provision that:a mean sectional area of the manganese sulfide-base inclusion present in a sectional area of 1 mm.sup.2 in the rolling direction of the steel is not less than 30 .mu.m.sup.2 ; anda rate of the number of a manganese sulfide-base inclusions not in the form of a complex with oxide is not less than 80% of the total amount of manganese sulfide-base inclusion.

Abstract: This invention relates to microbicidal/microbistatic compositions for industrial use which comprise 4,5-dichloro-1,2-dithiol-3-one and a haloacetic acid ester and an industrial method of killing and/or inhibiting microbes by using the aforementioned compositions.

Abstract: This invention relates to microbicidal/microbistatic compositions for industrial use which comprise 4,5-dichloro-1,2-dithiol-3-one and an alkylenebisthiocyanate and a method of killing and/or inhibiting the growth of microbes by using the aforementioned compositions.

Abstract: A corrosion inhibitor for ferrous metals comprising four different components of (a) an inorganic acid component (such as molybdate or tungstate), (b) an aliphatic hydroxycarboxylic or aliphatic dicarboxylic acid or its salt (such as citric acid, gluconic acid or succinic acid), (c) an inorganic heavy metal compound (such as zinc chloride or stannous chloride) and (d) a water soluble polymer component having a molecular weight of 500-100,000 (such as acylic homo or copolymer), which is especially advantageous for use in water recycling system.

Abstract: A microbicidal/microbistatic compositions for industrial use, which comprises 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one, and a method of killing or inhibiting the growth of microbes, which comprises adding 4,5-dichloro-1,2-dithiol-3-one and 1,2-benzisothiazolin-3-one simultaneously or at intervals to a system to be controlled microbicidally/microbistatically.

Abstract: An easily dispersible polymer composition which comprises a powder of a water soluble polymer having floculating property and a sodium sulfate hydrate, and optionally a magnesium sulfate hydrate and a hydroscopic agent and which shows a high degree of granularity and free-fluidity.

Abstract: There disclose stable and non-aqueous microbicidal compositions which are useful for controlling slime in pulp and paper manufacturing processes and industrial cooling water systems and which comprise 4,5-dichloro-1,2-dithiol-3-one as the active ingredient, and specific surfactants and hydrophilic organic solvents.

Abstract: There disclose stable and non-aqueous microbicidal compositions which are useful for controlling slime in pulp and paper manufacturing processes and industrial cooling water systems and which comprise 4,5-dichloro-1,2-dithiol-3-one as the active ingredient, and specific surfactants and hydrophilic organic solvents.

Abstract: New gel product for exterminating harmful marine organisms. Comprises (a) about 1 to 25% by weight of a natural high molecular weight compound capable of forming a gel in water, (b) about 5 to 30% by weight of an agent for exterminating harmful marine organisms, (c) about 1 to 25% by weight of at least one compound selected from the group consisting of a water soluble synthetic linear polymer, an inorganic substance, a surfactant, an organic solvent, a gel-modifier, and mixtures thereof, and (d) water.

Abstract: The present invention relates to a method and apparatus for treating waste water on ships, and more particularly to a method and apparatus for treating waste water on ships in a closed system.