Abstract: A method for manufacturing an armature core is provided, in which a plurality of split cores, which are formed by laminating core pieces produced through punching by punching dies, are coupled together to form an annular shape as a whole, so as to manufacture one armature core. The method includes: preparing a plurality of sets of the split cores, each set having three split cores, so as to form one armature core; and arranging the three split cores in each set at intervals of 120° in the circumferential direction. The three split cores in each set are formed by core pieces that have been punched by the same part of the same punching die.

Abstract: A method for manufacturing an armature core is provided, in which a plurality of split cores, which are formed by laminating core pieces produced through punching by punching dies, are coupled together to form an annular shape as a whole, so as to manufacture one armature core. The method includes: preparing a plurality of sets of the split cores, each set having three split cores, so as to form one armature core; and arranging the three split cores in each set at intervals of 120° in the circumferential direction. The three split cores in each set are formed by core pieces that have been punched by the same part of the same punching die.

Abstract: A chromene compound which develops yellow to red color, a high color density and a little initial color and which, when used in combination with an existing photochromic compound that exhibits blue color so as to develop a neutral tint, maintains uniformity in the color tone at the time of developing color or fading color, or exhibits a very large color fading rate.

Abstract: A chromene compound which develops yellow to red color, a high color density and a little initial color and which, when used in combination with an existing photochromic compound that exhibits blue color so as to develop a neutral tint, maintains uniformity in the color tone at the time of developing color or fading color, or exhibits a very large color fading rate.

Abstract: A chromene compound which develops yellow to red color, a high color density and a little initial color and which, when used in combination with an existing photochromic compound that exhibits blue color so as to develop a neutral tint, maintains uniformity in the color tone at the time of developing color or fading color, or exhibits a very large color fading rate.

Abstract: A chromene compound which develops yellow to red color, a high color density and a little initial color and which, when used in combination with an existing photochromic compound that exhibits blue color so as to develop a neutral tint, maintains uniformity in the color tone at the time of developing color or fading color, or exhibits a very large color fading rate.

Abstract: A polymerizable composition containing;(A) 100 parts by weight of a vinylbenzyl compound of the formula (I), ##STR1## wherein each of R.sup.1 and R.sup.2 is independently a halogen atom, each of h and i is independently 0, 1 or 2, each of X.sup.1, X.sup.2 and X.sup.3 is independently an oxygen atom or a sulfur atom, and each of j, k and m is 0 or 1, provided that when k is 0, j is 0, that when m is 0, each of j and k is 0, that when j is 0 and when each of k and m is 1, X.sup.1 and X.sup.2 cannot be sulfur atoms at the same time, and that when each of m, k and j is 1, X.sup.1, X.sup.2 and X.sup.3 cannot be sulfur atoms at the same time,and(B) 0.1 to 20 parts by weight of 2,4-diphenyl-4-methyl-1-pentene.

Abstract: An improved process for pretreating biomasses in advance of their enzymatic treatment is provided which process comprises subjecting a biomass together with an aqueous solution of an alkaline compound to kneading and reaction in a biaxial extruder, and which process has advantages that a continuous treatment in a very short time is possible, and the heat quantity required for the pretreatment is greatly reduced.

Abstract: A process for producing molded product composed of crosslinked resin or coated material composed of crosslinked resin on a substrate which comprises blending a polyolefin-series resin, a compound represented by the formulaX -- Y.sub.m Iwherein X is a group not containing an acetylenic linkage, Y is a group containing an acetylenic linkage and m is an integer of 1 or more, which is compatible with the resin at a room temperature or an elevated temperature, and a compound selected from the group consisting of an amino compound represented by the formula ##STR1## wherein each of R.sub.1 and R.sub.2 is independently substituted or non-substituted aliphatic hydrocarbon, substituted or non-substituted alicyclic hydrocarbon, or substituted or non-substituted aromatic hydrocarbon, provided that at least one of R.sub.1 or R.sub.2 is substituted or non-substituted aromatic hydrocarbon, an amino compound represented by the formula ##STR2## wherein each of R.sub.3, R.sub.4 and R.sub.