Coatings from epoxidized (polyurethane-polyester) resin system

✍ Scribed by A. M. Motawie; E. M. Sadek; M. M. B. Awad; A. Fakhr El-Din

• Book ID: 101251212
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 105 KB
• Volume: 67
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19980118)67:3<577::aid-app20>3.0.co;2-r

✦ Synopsis

Epoxidized polyurethane was synthesized from the reaction of the prepared epoxidized linseed oil with toluene diisocyanate (TDI) at a NCO-to-OH ratio equal to 5. The prepared epoxidized linseed oil was also reacted with phthalic anhydride at a molar ratio of 1 : 4 to give epoxidized polyester. Epoxidized polyurethane and epoxidized polyester were mixed in different weight ratio percentages to give three types of epoxidized (polyurethane-polyester) resin systems. These resin systems were tested physically and chemically and evaluated as coatings for both metal and glass panels. The data obtained indicate an exceptional combination of properties, such as adhesion, bending, and chemical resistance of the epoxidized (polyurethane-polyester) resin system of the weight ratio percentage of 15 : 85. Thus, these materials can be recommended to be used as coating materials.