Co-topo polymeric compositions, devices and systems for controlling threshold and delay activation sensitivities
AssigneeSegan Industries, Inc.
InventorHans O. Ribi
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Abstract
Co-topo-polymeric indicator compositions and methods for making and using the same are provided. Indicator compositions of the invention include a polymer and undergo a color change, which may be reversible or irreversible, in response to an applied stimulus, e.g., temperature. Aspects of methods of producing the compositions include setting a fluid co-topo-polymeric precursor composition into a solid product and then subjecting the solid product (either immediately or after a delay period) to polymerizing conditions to produce the desired indicator composition. Also provided are indicator devices that include the indicator compositions of the invention. The compositions of the invention find use in a variety of different applications.
Claims21
A method of detecting the occurrence of a stimulus, said method comprising:
- applying a stimulus to a co-topo-polymeric indicator composition comprising a copolymer of a co-crystallized first alkyl ester diacetylenic acid monomer and a second alkyl ester diacetylenic acid monomer that is distinct from the first alkyl ester diacetylenic acid monomer;
- and
- assessing said co-topo-polymeric indicator composition for the occurrence of a color change.
Dependencies are inferred from the claim text.