UNSATURATED POLYESTER RESIN COMPOSITION FOR TREATING CATHODE-RAY TUBE

• Main Authors: FUJII TADASHI, IZUMI HIROFUMI, IWAMI ETSUJI, TANAKA KAZUYUKI
• Format: Patent
• Language: English
• Published: 15.10.1987
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PURPOSE:The titled composition, obtained by dissolving an unsaturated polyester having a specific molecular weight in styrene and a polyhydric alcohol ester of (meth)acrylic acid and having a low viscosity and improved transparency and adhesive property without curing strain, e.g. spots, streaky pattern, etc., occurring in curing, etc. CONSTITUTION:A composition obtained by dissolving (A) an unsaturated polyester, prepared from an acid component containing unsaturated dibasic acid, e.g. maleic acid or fumaric acid, and/or and acid anhydride thereof and, as necessary, another polybasic acid and an alcohol component and having preferably 500-8,000, preferably 1,000-4,000 molecular weight based on one mol unsaturated group in (B) styrene (derivative) and (C) a polyhydric alcohol ester of (meth)acrylic acid, e.g. trimethylolpropane tri(meth)acrylate, at a molar ratio of [b/(a+c)] of the number of mol of unsaturated groups in the component (A) to the total of the numbers of mol of the unsaturated groups in the components (A) and (C) within the range of 1/10-10/1, particularly 1/3-3/1.