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US 2014/0371402 A1Published application
Polyamides and polyesters blended with a lithium salt interfacial tension reducing agent
AssigneeM&G USA Corporation
InventorPaul Heater
Life of this patent
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Abstract
A polymer composition and wall of a container made from such composition is set forth comprising a polyamide and polyester and a sufficient amount of an interfacial tension reducing agent such that the polyamide domains stretch disproportionately to the amount of stretch experienced by the polyester both with and without a cobalt salt.
Claims22
A process for making a composition comprising the steps of:
- A) making a crystallizable polyester in the presence of a di-ethylene glycol suppressant wherein the crystallizable polyester comprises acid units and glycol units and at least 85% of the polyester acid units of the crystallizable polyester are derived from terephthalic acid or the dimethyl ester of terephthalic acid,
- B) adding a cobalt salt
- after the manufacturing of the crystallizable polyester.
Dependencies are inferred from the claim text.