COATING PROCESS AND COATED PRODUCT

protective coatings. SUBSTANCE: invention relates to extrusion-mediated coating on metallic surfaces preheated to temperature going from 120 C to about 250 C. For coating is used thermoplastic composition containing (i) 50 to 100 wt % of polyester with molecular weight 10000-5000, vitrification temp...

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Bibliographische Detailangaben
Hauptverfasser:	SHARP LUIS, VIDMER KHANS, SHMID KRISTIAN, JUNG ROL'F, L'JU MARTIN, KHIMENES ARTEMIO, POSL STIVEN
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	protective coatings. SUBSTANCE: invention relates to extrusion-mediated coating on metallic surfaces preheated to temperature going from 120 C to about 250 C. For coating is used thermoplastic composition containing (i) 50 to 100 wt % of polyester with molecular weight 10000-5000, vitrification temperature from about -30 C to about 120 C, melt viscosity about 75-150 Pa*s at 240 C, melt index 20-200 g/10 min at 200 C, and softening temperature 120-200 C and (ii) 0 to 15 wt % of modifying polymer selected from group including epoxy polymer with equivalent weight 500-3000, fenoxy polymer, acrylic polymer with molecular weight 15000- 100000, polyolefin with molecular weight 15000-100000, and their mixtures. Preliminarily melted thermoplastic composition at 100-120 C is extruded on metallic surface and then temperature is slowly raised to 180-240 C to form coating 1 to 40 mcm thick. Coated surface is heated temperature from 250 to 550 C during about 5 to 30 sec. Coated material is further shaped into products. EFFECT: improved workability of coating composition and optimized process parameters. 45 cl, 13 tbl, 9 ex