Preparation and characteristics of two-component polyurethane flame retardant coatings using 2,3-dibromo modified polyesters

✍ Scribed by Hong-Soo Park; Hyun-Sik Hahm; Eun-Kyung Park

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 731 KB
• Volume: 61
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960718)61:3<421::aid-app4>3.0.co;2-k

✦ Synopsis

Two-component polyurethane flame retardant coatings were prepared by blending 2,3dibromo modified polyesters (2,3-DBPOs) and polyisocyanate. 2,3-DBPOs were synthesized by polycondensation of 2,3-dibromopropanoic acid, a flame retardant aliphatic carboxylic acid, with 1,4-butanediol, trimethylolpropane, and adipic acid. The content of 2,3-dibromopropanoic acid was varied a t 10, 20, and 30 wt % for the polycondensation reaction. Various physical properties of these new flame retardant coatings were comparable to nonflame-retardant coatings. They showed desirable properties for a flame retardant coating such as rapid drying and 9-12 h of pot life. Coatings with 30 wt % 2,3-dibromopropanoic acid did not burn using the vertical burning test.