Abstract: An anthracycline antibiotic FA-1180 A, A.sub.1, B or B.sub.1, or salts thereof, said antibiotic having the formula (I): ##STR1## wherein R represents an acetyl group or a 1-hydroxyethyl group.

Abstract: A photopolymerizable element comprising a layer of a photopolymerizable composition and a liquid developer-soluble or -dispersible transparent oriented film support laminated onto one surface of the photopolymerizable composition layer is advantageously employed for the production of a polymeric image without stripping of the film support. The element may further comprise a strippable protective film provided on the other surface of the photopolymerizable composition layer. The element of this invention is useful especially for the production of photoresists which are advantageously used for the manufacture of printed circuit boards.

Abstract: A novel photopolymerizable composition comprising (a) a non-gaseous ethylenically unsaturated compound, (b) a thermoplastic organic polymer binder, (c) a photopolymerization initiator and (d) a specific s-triazine compound provides improved adhesion of a photopolymer prepared therefrom to a substrate even in aqueous plating or etching solutions.

Abstract: A process for producing an image which comprises the steps of:(1) applying to the surface of a substrate the surface of a photosensitive layer, the other surface of the photosensitive layer being adhered to a substantially transparent film support which is soluble or dispersible in a developer consisting essentially of a liquid capable of substantially dissolving or dispersing therein the areas of the layer other than those having a polymeric image produced by imagewise exposure in the step (2) below;(2) exposing the photosensitive layer, imagewise, to actinic radiation to form a polymeric image in the layer; and(3) washing away with the developer the film support and the areas of the layer other than those having the polymeric image to form an image of a polymeric material on the substrate.

Abstract: A process for producing an image which comprises the steps of:(1) applying to the surface of a substrate the surface of a photosensitive layer, the other surface of the photosensitive layer being adhered to a substantially transparent film support which is soluble or dispersible in a developer consisting essentially of a liquid capable of substantially dissolving or dispersing therein the areas of the layer other than those having a polymeric image produced by imagewise exposure in the step (2) below;(2) exposing the photosensitive layer, imagewise, to actinic radiation to form a polymeric image in the layer; and(3) washing away with the developer the film support and the areas of the layer other than those having the polymeric image to form an image of a polymeric material on the substrate.

Abstract: A dialysis unit and a dialysis apparatus employing the dialysis unit which can perform dialysis at a very high efficiency. The unit comprises a vast plurality of semi-permeable hollow fibers substantially equal in length, which fibers are gathered to form a bundle and bonded in liquid-tight connection at both ends portions thereof. This bundle of hollow fibers is loosely encased in a casing having a plurality of openings substantially uniformly distributed all over the casing. The dialysis unit is put in a dialyzate bath having therein a means for making a forced current of the dialyzate. The dialyzate flows into the casing through the openings and acts upon the bundle of hollow fibers from all directions. Accordingly, the dialyzate can flow freely inside and outside the bundle, while maintaining good contact between the dialyzate and the surfaces of the fibers, even in the inner portion of the bundle.