C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/7623
C08L 67/02 (2006.01) C08G 63/66 (2006.01) C08K 7/04 (2006.01) C08L 79/00 (2006.01)
Patent
CA 1077642
REINFORCED FLAME RETARDANT POLYESTER COMPOSITIONS HAVING NON-DRIP CHARACTERISTICS Abstract of the Disclosure There is disclosed a process for preparing reinforced flame retardant copolyester molding compositions having non-drip characteristics. This process comprises intimately mixing a reinforcing agent, a Group Vb metal-containing compound, and the molten reaction product of a copolyester and a poly- carbodiimide. The copolyester comprises the reaction product of (a) an alkane diol such as butane diol, (b) terephthalic acid, isophthalic acid or a dialkyl ester thereof, and (c) a halogenated derivative of the bishydroxyethylether of p,p'-isopropylidenediphenol. The polycarbodiimide must both (a) be derived from at least one aromatic diisocyanae which is either unsubstituted or contains up to one methyl substituent on each aromatic ring, and (b) contains least three carbodiimide units per polycarbodiimide molecule. The reinforced flame retardant copolyester molding resin compositions prepared by this process may be readily molded to form three-dimensional shaped articles having satisfactory mechanical properties using conventional molding techniques. -1-
261222
Berardinelli Frank M.
Edelman Robert
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