摘要:
The present invention relates to an improved formaldehyde-free coated fibrous substrate. The coating includes a crosslinked binder system which forms three dimensional networks when heat cured. After the coating is applied to the back of fibrous substrate and cured, the coating is capable of hygroscopic expansion which imparts excellent anti-sag properties. The coating is compatible with other coating systems with neutral or mild alkaline pH. The improvement being the binding system is neutralized with a volatile base so that it evaporates quickly so as not to hinder the cross-linking reaction.
摘要:
The present invention relates to the production and use of ultrathin crosslinkable polymer layers as breakdown-resistant dielectrics. These can be realized by simple deposition from solutions and can subsequently be crosslinked by thermal or else UV treatment in the layer.
摘要:
The invention relates to a composite reinforcement (R-2) which is self-adhesive by vulcanisation to a diene rubber die and which can be used as a reinforcement element for a tyre, comprising: one or more reinforcement wire(s) (20), for example a carbon-steel cable; a first layer (21) of a thermoplastic polymer with a positive glass-transition temperature covering said wire(s), for example a 6-6 polyamide; and a second layer (22) covering the first layer (21) and comprising a thermoplastic functionalised unsaturated styrene elastomer with a negative glass-transition temperature, said elastomer containing functional groups selected from among epoxide, carboxyl, anhydride and acid ester groups, for example an SBS-epoxy elastomer. The invention also relates to a method for manufacturing such a composite reinforcement and to a semi-finished rubber product or item, in particular a tyre, including such a composite reinforcement.
摘要:
A coating composition for producing a water washable, protective coating, comprising, by weight, 10-50 % of a mixture of at least two acrylic polymers each having different molecular weights, acid numbers, and glass transition temperatures. The composition includes water and an alkali, in an amount sufficient to maintain the composition at a pH in the range of 7.5 to 9.5 and is further characterized in that the average molecular weight of the mixture of the at least two acrylic polymers is in the range of approximately 35,000 to 100,000. The average acid number of the mixture is in the range of approximately 65 to 150 and the glass transition temperature of a coating produced by the evaporation of the water from the composition is in the range of 0 to 70 DEG C.
摘要:
A process for producing a coating material composition characterized by reacting an emulsion of a polymer having an acid value of 20 to 200, prepared by polymerizing an ethylenically unsaturated monomer, with a calcium compound in a chemical eqivalent of 0.05 to 0.9 based on the above acid value. Usable calcium compounds include oxide, hydroxide and carbonate thereof and may be reacted with the polymer after the pH of the emulsion is regulated to 4.5 to 9 by adding a base thereto. The composition is stable for long and does not cause environmental pollution because it does not contain heavy metals. Because no metallic complex is used therein, it is free from disagreeable odor due to ammonia generated by complex decomposition during drying after coating.
摘要:
Die Erfindung betrifft ein Verfahren zum Sanieren von asbestfaserhaltigen Produkten, Flächenelementen, Bauelementen, vorzugsweise Platten, Wänden und Wellplatten, wobei man in einer ersten Verfahrensstufe auf die Oberfläche der unbehandelten (=ungereinigten) Produkte einer wässrigen Lösung bzw. wässrigen Dispersion eines wasserlöslichen Polymers auf Acrylsäure-Styrol-Basis aufbringt und daß man sodann in einer zweiten Verfahrensstufe mindestens eine Schicht eines Witterungsschutzstoffes aus einer wässrigen Lösung bzw. wässrigen Dispersion eines wasserlöslichen Polymers auf der Basis von Methacrylsäureester aufgibt. Der in erster Verfahrensstufe aufzutragenden Lösung bzw. Dispersion können zusätzlich wasserlösliche keimtötende Mittel und/oder Farbpigmente und/oder oberflächenaktige Mittel beigefügt sein.Der in zweiter Verfahrensstufe aufzubringenden Witterungsschutz-Lösung- bzw. Dispersion können in wasserunlösliche keimtötende Mittel und/oder Farbpigmente und/oder oberflächenaktige Mittel zugegeben sein.
摘要:
A method of removing pollutants attached on a surface of interest, the method comprising the steps of: forming a coating film by applying a self-peelable film forming composition containing components (A) to (C) to a surface of interest on which pollutants are attached; drying the coating film; and removing the pollutants together with the coating film by self-peeling of the coating film due to the drying: (A) a film-forming component; (B) a volatile solvent; and (C) a silicone compound.