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US 4,212,791 AGranted
Poly(alkyleneterephthalate) molding compositions containing oligomeric polyester and segmented copolyester-polyether elastomer
AssigneeRohm and Haas Company
InventorsNoyes L. Avery, William J. Work
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Abstract
Compositions comprising poly(alkylene terephthalate), an inert particulate nucleating agent, an oligomeric polyester crystallization promoter, and a segmented thermoplastic copolyester-ether elastomer are disclosed as having improved crystallization behavior and surface appearance. Methods of increasing the crystallization rate of poly(alkylene terephthalate) are also disclosed.
Claims19
Composition comprising poly(alkylene terephthalate) and an inert, particulate nucleating agent, an oligomeric polyester, and a segmented polyester-polyether block copolymer as crystallization promoters.
Dependencies are inferred from the claim text.