Abstract: The present invention relates to an improved stacker reclaimer apparatus for building up and discharging bulk material. The improved stacker reclaimer apparatus includes only one stacker bearing to separate the stacker machine from the reclaimer machine. A torque reaction member is rotatable connected to the stacker upper column. The torque reaction member is made of an arm portion and a torque arm bearing frame.

Abstract: This invention provides an apparatus for handling bulk material as located at circular or linear storage site. The apparatus can include both a stacker and a reclaimer, wherein the improvement in technology is described in the reclaimer portion of the apparatus. More specifically, a reclaimer apparatus is described having a platform mounted on one or more wheel truck assemblies arranged to roll on at least one rail. The platform having a plurality of means to support a pivotal reclaim conveyor boom and a fixed incline conveyor assembly. A pivotal reclaim conveyor assembly is made of a head shaft and a tail shaft and means to support a plurality of rakes, wherein the plurality of rakes are spaced at intervals in a continuous loop around the pivotal reclaim conveyor assembly. The pivotal reclaim conveyor assembly being driven by a first motor.

Abstract: The present invention relates to polyisocyanates containingi) 0.5 to 10 wt. % of amide and/or imide structural units (calculated as --CO--N.dbd., MW=42),ii) 5 to 20 wt. % of isocyanate groups (calculated as --NCO, MW=42) blocked with blocking agents which are monofunctional in the context of the isocyanate addition reaction andiii) 0 to 30 wt. % of chemically incorporated urethane groups (calculated as --NH--CO--O--, MW=59) obtained from the reaction of isocyanate groups with the hydroxyl groups of organic polyhydroxyl compounds.The present invention also relates to a process for the production of these lacquer polyisocyanates, their use as a binder for stoving lacquers optionally in combination with organic polyhydroxyl compounds and to their use as a binder component containing free hydroxyl groups and optionally blocked isocyanate groups by reacting and/or blending the polyisocyanates with organic polyhydroxyl compounds having a molecular weight of 62 to 350.

Abstract: The present invention relates to coating compositions which are suitable for the production of heat resistant films and coatings and containa) 100 parts by weight of organic compounds having (i) carbodiimide and/or uretoneimine groups and (ii) blocked isocyanate groups,b) 2 to 100 parts by weight of intramolecular carboxylic acid anhydrides which have a molecular weight of 98 to 500 and may contain free carboxyl groups andc) 2 to 100 parts by weight of polyhydric alcohols which have a molecular weight of 62 to 400 and a hydroxyl functionality of 2 to 4.The present invention also relates to heat-resistant substrates, in particular for wires, coated with these coating compositions.

Abstract: This invention relates to polyisocyanates containing(i) 0.5 to 15% by weight of structural units incorporated by urea groups and corresponding to the formula ##STR1## (ii) 5 to 20% by weight of isocyanate groups (calculated as NCO) reversibly blocked with monofunctional blocking agents for isocyanate groups and(iii) 0 to 30% by weight of chemically incorporated urethane groups (calculated as NH--CO--O) other than urethane groups present in blocked isocyanate groups.The invention also relates to a process for the preparation of these polyisocyanates and to their use in combination with organic polyhydroxyl compounds as stoving compositions or for the preparation of stoving compositions for heat resistant substrates, in particular wire.

Abstract: The present invention is directed to lacquer binders containing polyvinyl acetal which are suitable for the formation of films and coatings and contain mixtures ofa) polyvinyl acetals andb) organic compounds containing (i) carbodiimide and/or uretone imine groups and (ii) blocked isocyanate groups,the mixtures containing from 1 to 300 parts by weight of component b) per 100 parts by weight of component a).The invention is also directed to a process for the formation of coatings on heat resistant substrates by coating these substrates with a coating composition containing binder, inert solvent and optionally the conventional auxiliary agents and additives used in lacquer technology, followed by curing of the coating at temperatures above about 80.degree. C., characterized in that the coating compositions used contain binders of the type mentioned above. Finally, the present invention is directed to these coated heat resistant substrates.

Abstract: Lacquer binders suitable for the production of highly heat-resistant films and coatings consisting of a mixture of(a) polyamide-imides based on trimellitic anhydride, lactams and diisocyanates,(b) organic compounds carrying (i) carbodiimide and/or uretone imine groups and (ii) blocked isocyanate groups and optionally,(c) auxiliaries and additives.The use of these binders in coating compositions for heat-resistant substrates and a process for the production of wire enamels using said coating compositions.

Abstract: The invention relates to a process for the production of coatings based on polymers having a hydantoin structure by reacting blocked polyisocyanate carrying carbodiimide and/or uretone imine groups with .alpha.,.beta.-unsaturated diicarboxylic acids or derivatives thereof at 50.degree. to 700.degree. C. said reaction being carried out on the substrate to be coated.

Abstract: A double coating for the protection of a silver surface article is disclosed. A protective varnish coating, enclosing an inner varnish layer on the silver surface, intimately adheres to and is removable from said inner varnish layer.

Abstract: A process for partially silver electroplating the metal surface of a flat silver part wherein part of the surface is covered prior to silvering with a plating-resistant dipping enamel. A separation surface is provided between the exposed surface of the part to be covered with the dipping enamel and the exposed surface of the lengthwise adjacent part to be silvered. The separation surface consists of a material which is more difficult to wet with the dipping enamel than the metal of the surface to be covered. Preferably, the separation surface is the peripheral surface of a spacer lamination composed of polytetrafluoroethylene.