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Preparation and physical properties of two‐component polyurethane flame‐retardant coatings using trichloro modified polyesters
Author(s) -
Park HongSoo,
Ha KyungJin,
Keun JangHyoun,
Kim TaeOk
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981031)70:5<913::aid-app11>3.0.co;2-u
Subject(s) - trimethylolpropane , fire retardant , polyester , polyurethane , materials science , condensation polymer , adipic acid , intumescent , polymer chemistry , coating , chemical engineering , organic chemistry , composite material , chemistry , polymer , engineering
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. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 913–920, 1998