Abstract: A protection method for molded-plastic surfaces comprising the steps of:forming on the molded-plastics surface a first film from a composition including(A) acrylic polyol, 5 to 80 parts by weight,(B) polyalkyl methacrylate, 95 to 20 parts by weight and(C) isocyanate compound as an isocyanate group 0.5 to 20 equivalents with respect to 1 equivalent of a hydroxyl group in (A); andforming on the first film a second film from a composition including(D) organosilanetriol, represented by R.sup.1 Si(OH).sub.3 wherein R.sup.1 represents a monovalent group selected from the group consisting of an alkyl group having 1 to 3 carbon atoms and an aryl group, and/or a partial condensate thereof, 10 to 90 parts by weight and(E) colloidal silica, 90 to 10 parts by weight.

Abstract: A process for painting substrates in web or tabular form using roller application wherein a primer or base coat layer of paint and a top coat layer of paint are applied is characterized in that in the application of one of the two layers of paint a paint is used which contains in a solvent or dispersing agent a crosslinkable or thermoplastic resin which is liquid at the processing temperature, 0.5 to 7% by weight in relation to the dry weight of the resin of an organic substance which is suspended or emulsified in the solvent or dispersing agent, the size of the particles or droplets of said substance lying between 3 and 60 .mu.m, said substance melting at the processing temperature and its surface differing from that of the resin, and where appropriate the conventional paint additives.

Abstract: A magnet wire enamel based on polyamide resins is disclosed in which the molecular weight of the polyamide resin is reduced through an equilibration reaction with a solvolytic agent and a titanate catalyst. Also disclosed is a method of applying said enamel to a magnet wire substrate and the resulting enameled magnet wire.

Abstract: The two components of the putty, one containing the accelerator and the other containing the catalyst, are placed in two separate containers under vacuo. After the preparation is complete the containers are brought first to atmospheric pressure and then to high pressure in order to favor the removal of the two materials from the containers onto the slab to be coated. The two components are then mixed on the slab forming the putty suitable for coating slabs of marble, stone and the like.

Abstract: A system and method are provided for treating a surface to both cover existing graffiti thereon and to facilitate removal of subsequently applied graffiti. A two part, water-based epoxy is initially applied to the surface. After drying thereof, a top coat system including an aliphatic urethane color component, a catalyst and a hardner is applied directly over the epoxy and permitted to dry. Upon drying, subsequently applied graffiti may be easily removed by the use of a solvenated cleaner.

Abstract: The present invention relates to a process for the production of water- and solvent-resistant coatings by coating substrates with an aqueous coating composition containing as binder a mixture of(1) reaction products, containing anionic structural units of the formula ##STR1## in a quantity of 5 to 1200 milliequivalents per 100 g of said reaction products, obtained by reacting organic polyisocyanates with salts of cyanamide and bases selected from ammonia, volatile primary and secondary amines having a pKb-value of at least 3.1 and any volatile aliphatic tertiary amines and(2) polyepoxides having at least two epoxide groups per molecule and an epoxide equivalent of at least about 80, said polyepoxides being used in a quantity corresponding to an equivalent ratio of epoxide groups to anionic structural units of about 0.1:1 to 3:1, andcross-linking the binder at a temperature of about 5 to 200.degree. C. The present invention is also directed to the aqueous coating composition based on components 1 and 2.

Abstract: Fibers containing free amino groups, and especially polyamide fibers, can be made resistant to certain stains, especially those resulting from food grade dyes, by contacting the fiber with a solution of an aliphatic sulfonic acid containing 8 to 24 carbon atoms. Branched chain aliphatic sulfonic acids are more effective than the linear aliphatic sulfonic acids, and branching at the carbon bearing the sulfonic acid group is more effective than branching at any other carbon. Contacting the fiber with the solution of the aliphatic sulfonic acid needs to be done under acidic conditions, most preferably at a pH between 0.5 to 5.0.

Abstract: A method for selectively applying particles having cores of magnetically-permeable material and outer, fusible surfaces to a lenticular, light-transmissive screen, such as a projection television screen. The particles are selectively deposited in grooves between lenticules of the screen by magnetically attracting the particles to tips of a particle carrier sheet which positionally correspond with the grooves in the screen. The screen is then positioned underneath the carrier sheet, and the magnetic attractive force is reduced to effect release of the particles into the grooves of the screen. Microwave radiation is applied to the screen with the deposited particles, and the magnetically-permeable cores concentrate microwave energy dissipation in the particles and effect selective heating of the particles until their outer surfaces fuse to each other and to the screen.