C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1600, 400/17
C08L 67/02 (2006.01) C08K 5/00 (2006.01) C08K 5/16 (2006.01)
Patent
CA 1040783
ABSTRACT OF THE DISCLOSURE Stabilized thermoplastic segmented copolyester elastomer consisting essentially of a multiplicity of re- curring short chain ester units and long chain ester units joined through ester linkages, said short chain ester units amounting to 15 to 75 percent by weight of said copoly- ester and being derived from dicarboxylic acid such as an aromatic or cycloaliphatic acid, and an organic diol such as butanodiol, and said long chain ester units amounting to 25 to 85 percent by weight of said copolyester and being derived from dicarboxylic acid such as an aromatic or cycloaliphatic acid, and a long chain glycol such as polytetrametbylene ether glycol, said copolyester having melt index of less than 150 and a melting point of at least 90°C., stabilized with 1.75 to 15.0 percent by weight, based on the weight of elastomer of a stabilizer mixture comprising (a) 0.25 to 2.5 percent by weight or a substantially linear polycarbodiimide; and at least one compound taken from the group consisting of (b) 0.5 to 2.5 percent by weight of a compound taken from the group con- sisting of hindered phenols, nitrogen-containing hindered phenols, phosphorus-containing hindered phenols, and secondary aromatic amines; (c) 0.5 to 5.0 percent by weight of at least one phosphorus acid ester; and (d) 0.5 to 5.0 percent by weight of an amino compound taken from the group consisting of a homopolymer of amino acrylate and random copolymer of ethylene and amino acrylate, each of compounds (b), (c) and (d) being compatible with each other and with (a). A useful adhesive composition comprises (A) 1 to 99 percent by weight of the segmented copolyester elastomer, (B) 1 to 99 percent by weight of a compatible low molecular weight thermoplastic resin, and (C) 0.75 to 6.0 percent by weight, based on the weight of elastomer and resin of said stabilized mixture. -2-
202457
E.i. Du Pont de Nemours And Company
Na
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