Polyester ionomer composition
AssigneeGeneral Electric Company
InventorsBret Ja Chisholm, Sapna H. Talibuddin
Life of this patent
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Abstract
An end capped polyester ionomer composition comprising alkylene aryl polyester copolymer metal sulfonate units with end capping units formed by a reaction of the polyester copolymer with an epoxy compound having at least one cyclohexane ring moiety and a terminal epoxy functional group being a substituent on at least one cyclohexane ring moiety.
Claims30
An end capped polyester ionomer composition comprising an alkylene aryl polyester copolymer with metal sulfonate units having end capping units comprising cyclic aliphatic ester groups formed by the reaction of acid carboxy groups of the polyester copolymer with a first epoxy reactant and a second epoxy reactant, said first epoxy reactant having at least one cyclohexane ring moiety and an epoxy functional group being a substituent on at least one cyclohexane ring moiety, and wherein said first epoxy reactant comprises a monofunctional or a difunctional epoxy compound, and said second epoxy reactant comprises a multifunctional epoxy compound having a reactivity lower than said first epoxy reactant.
An end capped polyester ionomer resin composition comprising an alkylene aryl polyester copolymer with metal sulfonate units having end capping units comprising cyclic aliphatic ester groups formed by the reaction of acid carboxy groups of the polyester copolymer with an epoxy reactant, said epoxy reactant comprising a monofunctional or difunctional epoxy compound having at least one cyclohexane ring moiety and an epoxy functional group being a substituent on at least one cyclohexane ring moiety, wherein said resin composition comprises a multifunctional epoxy compound having a reactivity lower than said monofunctional or said difunctional epoxy reactant.
A process for forming a hydrolysis resistant polyester ionomer product comprising:
- preparing a mixture comprising:
- a polyester ionomer resin having acid carboxy end groups and a first epoxy reactant and a second epoxy reactant wherein:
- said first epoxy reactant has at least one cyclohexane ring moiety and an epoxy functional group being a substituent on at least one cyclohexane ring moiety and wherein said first epoxy reactant comprises a monofunctional or a difunctional epoxy compound;
- and
- said second epoxy reactant comprises a multifunctional epoxy
- compound having a reactivity lower than said first epoxy reactant;
- forming said mixture into a shaped article;
- and
- reacting said first epoxy reactant with said carboxy end groups of said polyester ionomer resin during shaping to form a hydrolysis resistant article.
Dependencies are inferred from the claim text.