Abstract: A process for the production of a ? type copper phthalocyanine pigment, comprising dry-milling a crude copper phthalocyanine having a purity of 97 to 100% and a primary crystal diameter of 0.5 to 100 ?m at a temperature of 180 to 50° C., to prepare an ?/? mixed crystal type copper phthalocyanine having an ? ratio of 5 to 35%, and treating the dry-milled product with a water-miscible organic solvent, wherein 0.1 to 20% by weight of at least one compound selected from the group consisting of a compound of the formula (1), a compound of the formula (2) and a compound of the formula (3) is added to the dry-milled product before, during or after the step (B) MePc—{X—(CH2)kNR1R2}n??(1) MePc—(SO3?N+R5R6R7R8)p.

Abstract: A process for the production of a &bgr; type copper phthalocyanine pigment, comprising dry-milling a crude copper phthalocyanine having a purity of 97 to 100% and a primary crystal diameter of 0.5 to 100 &mgr;m at a temperature of 180 to 50° C.

Abstract: A coated pigment highly surface-modified with a substantially water-insoluble organic surface modifier, produced by preparing a mixture of water and a substantially water-insoluble organic surface modifier, pressurizing the mixture, introducing the mixture into a flow path having a diameter-decreased portion and a turning portion to cause a shear force in the mixture of which the flow is accelerated while the mixture is passing the diameter-decreased portion, mutual collision of the mixture of which the flow has been accelerated or collision of the mixture of which the flow has been accelerated against a wall constituting the flow path, thereby obtaining an aqueous dispersion in which the substantially water-insoluble organic surface modifier is homogeneously dispersed in the water, mixing the aqueous dispersion with the pigment to coat the pigment with the substantially water-insoluble organic surface modifier, and isolating the pigment coated with the substantially-water-insoluble organic surface modifier.

Abstract: A process for the production of a .beta.-form copper phthalocyanine having a particle size of 0.005 to 0.2 .mu.m and an aspect ratio of 1 to 3, which comprises the following steps:a. dry-milling a crude copper phthalocyanine in a milling apparatus until the resultant dry-milled product has an .alpha.-crystal content of more than 45% by weight,wet-milling the resultant dry-milled product in the presence of a water-soluble inorganic salt and at least one organic liquid selected from the group consisting of water-soluble alkylene glycols having 2 to 3 carbon atoms and polyoxyalkylene glycols, wherein the inorganic salt is used in an amount that is 2 to 10 times, by weight, as large as that of the dry-milled copper phthalocyanine, and wherein the organic liquid is used in an amount that is 0.1 to 2 times, by weight, as large as that of the dry-milled copper phthalocyanine, andc. removing the inorganic salt and the organic liquid from the resultant wet-milled product.

Abstract: A process for the preparation of a copper phthalocyanine pigment, which comprises dry grinding crude copper phthalocyanine, treating the dry ground crude copper phthalocyanine with an aqueous solution of a mineral acid under such conditions of acid concentration and temperature as not to transform the .beta. form contained in the ground crude copper phthalocyanine into the .alpha. one to thereby carry out the pigmentation and removing the mineral acid from the resulting mixture.

Abstract: A process for the preparation of a copper phthalocyanine pigment which comprises adding a dry ground mixture of crude copper phthalocyanine containing 0.1 to 20% by weight of a crystal growth inhibitor to a 50 to 90% by weight aqueous solution of sulfuric acid to obtain a sulfuric acid slurry of the dry ground mixture, adding water to the slurry to form a precipitate and recovering it to obtain pigment grade copper phthalocyanine. The copper phthalocyanine pigment prepared according to the present invention is usable in coating materials, inks or plastics.

Abstract: A thermogenic sheet combined poultice comprising a thermogenic composition layer capable of generating heat in the presence of air or oxygen and a heat-stable wet pack composition layer; and a process for the production of the thermogenic sheet combined poultice.

Abstract: A thermally diffusible composite comprising a thermally diffusible medicine such as allethrin, a thermogenic composition including an alkali metal sulphide or the like, carbonaceous material or the like and, if desired, a filler such as cellulose. In one embodiment, this invention relates to such a thermally diffusible composite the thermogenic composition or the whole of which is enclosed in an oxygen-impermeable container.

Abstract: A thermogenic composition comprising (1) at least one compound such as an alkali metal sulphide, polysulphide, hydrosulphide, hydrate thereof or mixture thereof, (2) at least one catalytically functional compound such as carbonaceous material or iron carbide and, if desired, (3) at least one filler such as natural or synthetic staple fibers or aluminum oxide.