Preparation and physical properties of two-component polyurethane flame-retardant coatings using trichloro modified polyesters

✍ Scribed by Hong-Soo Park; Kyung-Jin Ha; Jang-Hyoun Keun; Tae-Ok Kim

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 254 KB
• Volume: 70
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19981031)70:5<913::aid-app11>3.0.co;2-u

✦ Synopsis

Trichloro modified polyester polyols were synthesized by two-step condensation reactions. An intermediate compound was synthesized by the esterification of trichloroacetic acid with trimethylolpropane in the first step. In the next step, polycondensation of the intermediate, 1,4-butanediol and trimethylolpropane with adipic acid was carried out. Two-component flame-retardant polyurethane coatings were prepared by blending these modified polyester polyols and polyisocyanate. The physical properties of these new coatings were comparable to non-flame-retardant coatings. They showed a drying time of 3-4 h and a pot life time of 10 -13 h, which could belong to the flame-retardant coatings with long pot life times. Coating with 20 wt % trichloroacetic acid showed a self-extinguishing property in the vertical burning test.