COMPOSITIONS FOR CONTAINERS AND OTHER ARTICLES AND METHODS OF USING THE SAME

• Main Authors: KEVIN ROMAGNOLI, RICHARD H EVANS, MARK S VON MAIER, T HOWARD KILLILEA, O'BRIEN ROBERT M, JEFFREY NIEDERST
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2018
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; CORRECTING FLUIDS; DYES; FILLING PASTES; HANDLING THIN OR FILAMENTARY MATERIAL; 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; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; STORING; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide coating compositions for use in the field of packaging containers such as metal food and beverage cans, the compositions being safe for food contact, allowing fast application to a substrate, and resisting degradation over long periods of time, even when exposed to harsh environments.SOLUTION: A coating composition comprises a polyether polymer; where the polyether polymer has a number average molecular weight of at least 2,000, includes at least 25 wt.% of aryl or heteroaryl groups, is substantially free of a bound bisphenol monomer, or a diepoxide thereof, and is represented by the formula (II) in the figure. The polyether polymer includes one or more -CH2-CH(OH)-CH2- or -CH2-CH2-CH(OH)- segments.SELECTED DRAWING: None 【課題】金属製食品及び飲料用缶などの包装用容器の分野において、食品接触に安全で、基材に対する高速塗布が可能であり、また過酷な環境にさらされる場合でも長期間にわたって劣化に耐えるコーティング組成物の提供。【解決手段】少なくとも２，０００の数平均分子量を有し、少なくとも２５重量％のアリールまたはヘテロアリール基を含有し、結合しているビスフェノールモノマー、またはそのジエポキシドを実質的に不含有であり、かつ次式（ＩＩ）のポリエーテルポリマーを含む、コーティング組成物。前記ポリエーテルポリマーが、１つ以上の−ＣＨ２−ＣＨ（ＯＨ）−ＣＨ２−又は−ＣＨ２−ＣＨ２−ＣＨ（ＯＨ）−セグメントを含有する、コーティング組成物。【選択図】なし