Patent ID: 6444753
Filing Date: 2002-09-03
Classification: C08L

Abstract:
A polyester molding composition, comprising;a blend of polybutylene terephthalate and a rubbery impact modifier; and an ionomer polyester polymer, wherein the ionomer polyester polymer comprises an ionomer unit having a formula (I): or a formula (II):(M+nO3S)d-A-(ORâ€³OH)p, wherein p is 1, 2 or 3; d is 1, 2 or 3; p+d equals 2, 3, 4, 5 or 6, M is a metal and n is 1, 2, 3, 4, or 5; Râ€³ is selected from the group consisting of â€”CH2CH2â€”, â€”CH2CH2OCH2CH2â€”, â€”CH(CH3)CH2â€”,â€”CH2CH2CH2â€”, and â€”CH2CH2CH2CH2â€”; and A is an aryl group containing one or more aromatic rings.