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US 2026/0265448 A1Published application
Polymer compositions with thermally contractile molecules
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsErica Marie Redline, Eric Michael Nagel, Chad Staiger
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Abstract
A polymer composition includes a polymeric moiety covalently attached to a bisdibenzo-1,4-dioxocane having a coefficient of thermal expansion that is less than a coefficient of thermal expansion of the polymeric moiety. Also provided are methods for synthesizing a substituted bisdibenzo-1,4-dioxocane and for preparing a polymer composition.
Claims20
A polymer composition comprising:
- a polymeric moiety covalently bound to a bisdibenzo-1,4-dioxocane having the below structure:
- wherein at least one of R1-R8 comprises at least one covalent attachment site for the polymeric moiety;
- wherein the polymeric moiety is a polymer or a polymer resin;
- and
- wherein the polymer composition has a coefficient of thermal expansion (CTE) that is less than a coefficient of thermal expansion of the polymeric moiety.
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A method for synthesizing a substituted-bisdibenzo-1,4-dioxocane, the method comprising:
- producing a reaction mixture comprising a bisdibenzo-1,4-dioxocane intermediate having at least one reactive moiety on at least one of its terminal benzene groups;
- adding a functional group reactant to the reaction mixture;
- and
- converting the at least one reactive moiety on the bisdibenzo-1,4-dioxocane intermediate to at least one functional group substituent to produce a substituted bisdibenzo-1,4-dioxocane having the below structure:
- wherein at least one of R1-R8 comprises the at least one functional group substituent.
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A method of preparing a polymer composition, the method comprising:
- mixing a polymeric moiety with a substituted-bisdibenzo-1,4-dioxocane having the below structure:
- wherein at least one of R1-R8 comprises at least one functional group substituent and wherein the polymeric moiety is selected from the group consisting of:
- a monomer, a polymer, and a polymer resin;
- and
- covalently bonding the at least one functional group substituent of the substituted bisdibenzo-1,4-dioxocane to the polymeric moiety.
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Dependencies are inferred from the claim text.